Import tools: 5b883d86fdb4df55036d5dba2ca6f9dfa0750b44 from branch v3.3

ref: 1ac1389bda..5b883d86fd
for: 3.3.12

SERVER-25814 Initial vendor import: tools

45 files changed, 13181 insertions, 0 deletions

diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/.gitignore b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/.gitignore
new file mode 100644
index 00000000000..dd8fc7468f4
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/.gitignore
@@ -0,0 +1,5 @@
+*.6
+6.out
+_obj/
+_test/
+_testmain.go
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/.travis.yml b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/.travis.yml
new file mode 100644
index 00000000000..b97211926e8
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/.travis.yml
@@ -0,0 +1,4 @@
+# Cf. http://docs.travis-ci.com/user/getting-started/
+# Cf. http://docs.travis-ci.com/user/languages/go/
+
+language: go
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/LICENSE b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/LICENSE
new file mode 100644
index 00000000000..d6456956733
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/LICENSE
@@ -0,0 +1,202 @@
+
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diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/README.md b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/README.md
new file mode 100644
index 00000000000..215a2bb7a8b
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/README.md
@@ -0,0 +1,58 @@
+[![GoDoc](https://godoc.org/github.com/smartystreets/assertions/internal/oglematchers?status.svg)](https://godoc.org/github.com/smartystreets/assertions/internal/oglematchers)
+
+`oglematchers` is a package for the Go programming language containing a set of
+matchers, useful in a testing or mocking framework, inspired by and mostly
+compatible with [Google Test][googletest] for C++ and
+[Google JS Test][google-js-test]. The package is used by the
+[ogletest][ogletest] testing framework and [oglemock][oglemock] mocking
+framework, which may be more directly useful to you, but can be generically used
+elsewhere as well.
+
+A "matcher" is simply an object with a `Matches` method defining a set of golang
+values matched by the matcher, and a `Description` method describing that set.
+For example, here are some matchers:
+
+```go
+// Numbers
+Equals(17.13)
+LessThan(19)
+
+// Strings
+Equals("taco")
+HasSubstr("burrito")
+MatchesRegex("t.*o")
+
+// Combining matchers
+AnyOf(LessThan(17), GreaterThan(19))
+```
+
+There are lots more; see [here][reference] for a reference. You can also add
+your own simply by implementing the `oglematchers.Matcher` interface.
+
+
+Installation
+------------
+
+First, make sure you have installed Go 1.0.2 or newer. See
+[here][golang-install] for instructions.
+
+Use the following command to install `oglematchers` and keep it up to date:
+
+    go get -u github.com/smartystreets/assertions/internal/oglematchers
+
+
+Documentation
+-------------
+
+See [here][reference] for documentation. Alternatively, you can install the
+package and then use `godoc`:
+
+    godoc github.com/smartystreets/assertions/internal/oglematchers
+
+
+[reference]: http://godoc.org/github.com/smartystreets/assertions/internal/oglematchers
+[golang-install]: http://golang.org/doc/install.html
+[googletest]: http://code.google.com/p/googletest/
+[google-js-test]: http://code.google.com/p/google-js-test/
+[ogletest]: http://github.com/smartystreets/assertions/internal/ogletest
+[oglemock]: http://github.com/smartystreets/assertions/internal/oglemock
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/all_of.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/all_of.go
new file mode 100644
index 00000000000..d93a9740443
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/all_of.go
@@ -0,0 +1,70 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"strings"
+)
+
+// AllOf accepts a set of matchers S and returns a matcher that follows the
+// algorithm below when considering a candidate c:
+//
+//  1. Return true if for every Matcher m in S, m matches c.
+//
+//  2. Otherwise, if there is a matcher m in S such that m returns a fatal
+//     error for c, return that matcher's error message.
+//
+//  3. Otherwise, return false with the error from some wrapped matcher.
+//
+// This is akin to a logical AND operation for matchers.
+func AllOf(matchers ...Matcher) Matcher {
+	return &allOfMatcher{matchers}
+}
+
+type allOfMatcher struct {
+	wrappedMatchers []Matcher
+}
+
+func (m *allOfMatcher) Description() string {
+	// Special case: the empty set.
+	if len(m.wrappedMatchers) == 0 {
+		return "is anything"
+	}
+
+	// Join the descriptions for the wrapped matchers.
+	wrappedDescs := make([]string, len(m.wrappedMatchers))
+	for i, wrappedMatcher := range m.wrappedMatchers {
+		wrappedDescs[i] = wrappedMatcher.Description()
+	}
+
+	return strings.Join(wrappedDescs, ", and ")
+}
+
+func (m *allOfMatcher) Matches(c interface{}) (err error) {
+	for _, wrappedMatcher := range m.wrappedMatchers {
+		if wrappedErr := wrappedMatcher.Matches(c); wrappedErr != nil {
+			err = wrappedErr
+
+			// If the error is fatal, return immediately with this error.
+			_, ok := wrappedErr.(*FatalError)
+			if ok {
+				return
+			}
+		}
+	}
+
+	return
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/all_of_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/all_of_test.go
new file mode 100644
index 00000000000..0f9d198fcbe
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/all_of_test.go
@@ -0,0 +1,110 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+	"errors"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type allOfFakeMatcher struct {
+	desc string
+	err  error
+}
+
+func (m *allOfFakeMatcher) Matches(c interface{}) error {
+	return m.err
+}
+
+func (m *allOfFakeMatcher) Description() string {
+	return m.desc
+}
+
+type AllOfTest struct {
+}
+
+func init() { RegisterTestSuite(&AllOfTest{}) }
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *AllOfTest) DescriptionWithEmptySet() {
+	m := AllOf()
+	ExpectEq("is anything", m.Description())
+}
+
+func (t *AllOfTest) DescriptionWithOneMatcher() {
+	m := AllOf(&allOfFakeMatcher{"taco", errors.New("")})
+	ExpectEq("taco", m.Description())
+}
+
+func (t *AllOfTest) DescriptionWithMultipleMatchers() {
+	m := AllOf(
+		&allOfFakeMatcher{"taco", errors.New("")},
+		&allOfFakeMatcher{"burrito", errors.New("")},
+		&allOfFakeMatcher{"enchilada", errors.New("")})
+
+	ExpectEq("taco, and burrito, and enchilada", m.Description())
+}
+
+func (t *AllOfTest) EmptySet() {
+	m := AllOf()
+	err := m.Matches(17)
+
+	ExpectEq(nil, err)
+}
+
+func (t *AllOfTest) OneMatcherReturnsFatalErrorAndSomeOthersFail() {
+	m := AllOf(
+		&allOfFakeMatcher{"", errors.New("")},
+		&allOfFakeMatcher{"", NewFatalError("taco")},
+		&allOfFakeMatcher{"", errors.New("")},
+		&allOfFakeMatcher{"", nil})
+
+	err := m.Matches(17)
+
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("taco")))
+}
+
+func (t *AllOfTest) OneMatcherReturnsNonFatalAndOthersSayTrue() {
+	m := AllOf(
+		&allOfFakeMatcher{"", nil},
+		&allOfFakeMatcher{"", errors.New("taco")},
+		&allOfFakeMatcher{"", nil})
+
+	err := m.Matches(17)
+
+	ExpectFalse(isFatal(err))
+	ExpectThat(err, Error(Equals("taco")))
+}
+
+func (t *AllOfTest) AllMatchersSayTrue() {
+	m := AllOf(
+		&allOfFakeMatcher{"", nil},
+		&allOfFakeMatcher{"", nil},
+		&allOfFakeMatcher{"", nil})
+
+	err := m.Matches(17)
+
+	ExpectEq(nil, err)
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/any.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/any.go
new file mode 100644
index 00000000000..f6991ec1020
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/any.go
@@ -0,0 +1,32 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+// Any returns a matcher that matches any value.
+func Any() Matcher {
+	return &anyMatcher{}
+}
+
+type anyMatcher struct {
+}
+
+func (m *anyMatcher) Description() string {
+	return "is anything"
+}
+
+func (m *anyMatcher) Matches(c interface{}) error {
+	return nil
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/any_of.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/any_of.go
new file mode 100644
index 00000000000..2918b51f21a
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/any_of.go
@@ -0,0 +1,94 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+// AnyOf accepts a set of values S and returns a matcher that follows the
+// algorithm below when considering a candidate c:
+//
+//  1. If there exists a value m in S such that m implements the Matcher
+//     interface and m matches c, return true.
+//
+//  2. Otherwise, if there exists a value v in S such that v does not implement
+//     the Matcher interface and the matcher Equals(v) matches c, return true.
+//
+//  3. Otherwise, if there is a value m in S such that m implements the Matcher
+//     interface and m returns a fatal error for c, return that fatal error.
+//
+//  4. Otherwise, return false.
+//
+// This is akin to a logical OR operation for matchers, with non-matchers x
+// being treated as Equals(x).
+func AnyOf(vals ...interface{}) Matcher {
+	// Get ahold of a type variable for the Matcher interface.
+	var dummy *Matcher
+	matcherType := reflect.TypeOf(dummy).Elem()
+
+	// Create a matcher for each value, or use the value itself if it's already a
+	// matcher.
+	wrapped := make([]Matcher, len(vals))
+	for i, v := range vals {
+		t := reflect.TypeOf(v)
+		if t != nil && t.Implements(matcherType) {
+			wrapped[i] = v.(Matcher)
+		} else {
+			wrapped[i] = Equals(v)
+		}
+	}
+
+	return &anyOfMatcher{wrapped}
+}
+
+type anyOfMatcher struct {
+	wrapped []Matcher
+}
+
+func (m *anyOfMatcher) Description() string {
+	wrappedDescs := make([]string, len(m.wrapped))
+	for i, matcher := range m.wrapped {
+		wrappedDescs[i] = matcher.Description()
+	}
+
+	return fmt.Sprintf("or(%s)", strings.Join(wrappedDescs, ", "))
+}
+
+func (m *anyOfMatcher) Matches(c interface{}) (err error) {
+	err = errors.New("")
+
+	// Try each matcher in turn.
+	for _, matcher := range m.wrapped {
+		wrappedErr := matcher.Matches(c)
+
+		// Return immediately if there's a match.
+		if wrappedErr == nil {
+			err = nil
+			return
+		}
+
+		// Note the fatal error, if any.
+		if _, isFatal := wrappedErr.(*FatalError); isFatal {
+			err = wrappedErr
+		}
+	}
+
+	return
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/any_of_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/any_of_test.go
new file mode 100644
index 00000000000..f0b5025406f
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/any_of_test.go
@@ -0,0 +1,139 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	"errors"
+
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type fakeAnyOfMatcher struct {
+	desc string
+	err  error
+}
+
+func (m *fakeAnyOfMatcher) Matches(c interface{}) error {
+	return m.err
+}
+
+func (m *fakeAnyOfMatcher) Description() string {
+	return m.desc
+}
+
+type AnyOfTest struct {
+}
+
+func init() { RegisterTestSuite(&AnyOfTest{}) }
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *AnyOfTest) EmptySet() {
+	matcher := AnyOf()
+
+	err := matcher.Matches(0)
+	ExpectThat(err, Error(Equals("")))
+}
+
+func (t *AnyOfTest) OneTrue() {
+	matcher := AnyOf(
+		&fakeAnyOfMatcher{"", NewFatalError("foo")},
+		17,
+		&fakeAnyOfMatcher{"", errors.New("foo")},
+		&fakeAnyOfMatcher{"", nil},
+		&fakeAnyOfMatcher{"", errors.New("foo")},
+	)
+
+	err := matcher.Matches(0)
+	ExpectEq(nil, err)
+}
+
+func (t *AnyOfTest) OneEqual() {
+	matcher := AnyOf(
+		&fakeAnyOfMatcher{"", NewFatalError("foo")},
+		&fakeAnyOfMatcher{"", errors.New("foo")},
+		13,
+		"taco",
+		19,
+		&fakeAnyOfMatcher{"", errors.New("foo")},
+	)
+
+	err := matcher.Matches("taco")
+	ExpectEq(nil, err)
+}
+
+func (t *AnyOfTest) OneFatal() {
+	matcher := AnyOf(
+		&fakeAnyOfMatcher{"", errors.New("foo")},
+		17,
+		&fakeAnyOfMatcher{"", NewFatalError("taco")},
+		&fakeAnyOfMatcher{"", errors.New("foo")},
+	)
+
+	err := matcher.Matches(0)
+	ExpectThat(err, Error(Equals("taco")))
+}
+
+func (t *AnyOfTest) OneNil() {
+	var err error
+	matcher := AnyOf(
+		13,
+		nil,
+		19,
+	)
+
+	// No match
+	err = matcher.Matches(14)
+	ExpectNe(nil, err)
+
+	// Match
+	err = matcher.Matches(nil)
+	ExpectEq(nil, err)
+}
+
+func (t *AnyOfTest) AllFalseAndNotEqual() {
+	matcher := AnyOf(
+		&fakeAnyOfMatcher{"", errors.New("foo")},
+		17,
+		&fakeAnyOfMatcher{"", errors.New("foo")},
+		19,
+	)
+
+	err := matcher.Matches(0)
+	ExpectThat(err, Error(Equals("")))
+}
+
+func (t *AnyOfTest) DescriptionForEmptySet() {
+	matcher := AnyOf()
+	ExpectEq("or()", matcher.Description())
+}
+
+func (t *AnyOfTest) DescriptionForNonEmptySet() {
+	matcher := AnyOf(
+		&fakeAnyOfMatcher{"taco", nil},
+		"burrito",
+		&fakeAnyOfMatcher{"enchilada", nil},
+	)
+
+	ExpectEq("or(taco, burrito, enchilada)", matcher.Description())
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/any_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/any_test.go
new file mode 100644
index 00000000000..410cc12825e
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/any_test.go
@@ -0,0 +1,53 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type AnyTest struct {
+}
+
+func init() { RegisterTestSuite(&AnyTest{}) }
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *AnyTest) Description() {
+	m := Any()
+	ExpectEq("is anything", m.Description())
+}
+
+func (t *AnyTest) Matches() {
+	var err error
+	m := Any()
+
+	err = m.Matches(nil)
+	ExpectEq(nil, err)
+
+	err = m.Matches(17)
+	ExpectEq(nil, err)
+
+	err = m.Matches("taco")
+	ExpectEq(nil, err)
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/contains.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/contains.go
new file mode 100644
index 00000000000..2f326dbc5d6
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/contains.go
@@ -0,0 +1,61 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// Return a matcher that matches arrays slices with at least one element that
+// matches the supplied argument. If the argument x is not itself a Matcher,
+// this is equivalent to Contains(Equals(x)).
+func Contains(x interface{}) Matcher {
+	var result containsMatcher
+	var ok bool
+
+	if result.elementMatcher, ok = x.(Matcher); !ok {
+		result.elementMatcher = Equals(x)
+	}
+
+	return &result
+}
+
+type containsMatcher struct {
+	elementMatcher Matcher
+}
+
+func (m *containsMatcher) Description() string {
+	return fmt.Sprintf("contains: %s", m.elementMatcher.Description())
+}
+
+func (m *containsMatcher) Matches(candidate interface{}) error {
+	// The candidate must be a slice or an array.
+	v := reflect.ValueOf(candidate)
+	if v.Kind() != reflect.Slice && v.Kind() != reflect.Array {
+		return NewFatalError("which is not a slice or array")
+	}
+
+	// Check each element.
+	for i := 0; i < v.Len(); i++ {
+		elem := v.Index(i)
+		if matchErr := m.elementMatcher.Matches(elem.Interface()); matchErr == nil {
+			return nil
+		}
+	}
+
+	return fmt.Errorf("")
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/contains_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/contains_test.go
new file mode 100644
index 00000000000..dfc981c1488
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/contains_test.go
@@ -0,0 +1,233 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type ContainsTest struct {}
+func init() { RegisterTestSuite(&ContainsTest{}) }
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *ContainsTest) WrongTypeCandidates() {
+	m := Contains("")
+	ExpectEq("contains: ", m.Description())
+
+	var err error
+
+	// Nil candidate
+	err = m.Matches(nil)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("array")))
+	ExpectThat(err, Error(HasSubstr("slice")))
+
+	// String candidate
+	err = m.Matches("")
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("array")))
+	ExpectThat(err, Error(HasSubstr("slice")))
+
+	// Map candidate
+	err = m.Matches(make(map[string]string))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("array")))
+	ExpectThat(err, Error(HasSubstr("slice")))
+}
+
+func (t *ContainsTest) NilArgument() {
+	m := Contains(nil)
+	ExpectEq("contains: is nil", m.Description())
+
+	var c interface{}
+	var err error
+
+	// Empty array of pointers
+	c = [...]*int{}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Empty slice of pointers
+	c = []*int{}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Non-empty array of integers
+	c = [...]int{17, 0, 19}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Non-empty slice of integers
+	c = []int{17, 0, 19}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Non-matching array of pointers
+	c = [...]*int{new(int), new(int)}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Non-matching slice of pointers
+	c = []*int{new(int), new(int)}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Matching array of pointers
+	c = [...]*int{new(int), nil, new(int)}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Matching slice of pointers
+	c = []*int{new(int), nil, new(int)}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Non-matching slice of pointers from matching array
+	someArray := [...]*int{new(int), nil, new(int)}
+	c = someArray[0:1]
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+}
+
+func (t *ContainsTest) StringArgument() {
+	m := Contains("taco")
+	ExpectEq("contains: taco", m.Description())
+
+	var c interface{}
+	var err error
+
+	// Non-matching array of strings
+	c = [...]string{"burrito", "enchilada"}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Non-matching slice of strings
+	c = []string{"burrito", "enchilada"}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Matching array of strings
+	c = [...]string{"burrito", "taco", "enchilada"}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Matching slice of strings
+	c = []string{"burrito", "taco", "enchilada"}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Non-matching slice of strings from matching array
+	someArray := [...]string{"burrito", "taco", "enchilada"}
+	c = someArray[0:1]
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+}
+
+func (t *ContainsTest) IntegerArgument() {
+	m := Contains(int(17))
+	ExpectEq("contains: 17", m.Description())
+
+	var c interface{}
+	var err error
+
+	// Non-matching array of integers
+	c = [...]int{13, 19}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Non-matching slice of integers
+	c = []int{13, 19}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Matching array of integers
+	c = [...]int{13, 17, 19}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Matching slice of integers
+	c = []int{13, 17, 19}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Non-matching slice of integers from matching array
+	someArray := [...]int{13, 17, 19}
+	c = someArray[0:1]
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Non-matching array of floats
+	c = [...]float32{13, 17.5, 19}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Non-matching slice of floats
+	c = []float32{13, 17.5, 19}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Matching array of floats
+	c = [...]float32{13, 17, 19}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Matching slice of floats
+	c = []float32{13, 17, 19}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+}
+
+func (t *ContainsTest) MatcherArgument() {
+	m := Contains(HasSubstr("ac"))
+	ExpectEq("contains: has substring \"ac\"", m.Description())
+
+	var c interface{}
+	var err error
+
+	// Non-matching array of strings
+	c = [...]string{"burrito", "enchilada"}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Non-matching slice of strings
+	c = []string{"burrito", "enchilada"}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Matching array of strings
+	c = [...]string{"burrito", "taco", "enchilada"}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Matching slice of strings
+	c = []string{"burrito", "taco", "enchilada"}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Non-matching slice of strings from matching array
+	someArray := [...]string{"burrito", "taco", "enchilada"}
+	c = someArray[0:1]
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/deep_equals.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/deep_equals.go
new file mode 100644
index 00000000000..1d91baef32e
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/deep_equals.go
@@ -0,0 +1,88 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"reflect"
+)
+
+var byteSliceType reflect.Type = reflect.TypeOf([]byte{})
+
+// DeepEquals returns a matcher that matches based on 'deep equality', as
+// defined by the reflect package. This matcher requires that values have
+// identical types to x.
+func DeepEquals(x interface{}) Matcher {
+	return &deepEqualsMatcher{x}
+}
+
+type deepEqualsMatcher struct {
+	x interface{}
+}
+
+func (m *deepEqualsMatcher) Description() string {
+	xDesc := fmt.Sprintf("%v", m.x)
+	xValue := reflect.ValueOf(m.x)
+
+	// Special case: fmt.Sprintf presents nil slices as "[]", but
+	// reflect.DeepEqual makes a distinction between nil and empty slices. Make
+	// this less confusing.
+	if xValue.Kind() == reflect.Slice && xValue.IsNil() {
+		xDesc = "<nil slice>"
+	}
+
+	return fmt.Sprintf("deep equals: %s", xDesc)
+}
+
+func (m *deepEqualsMatcher) Matches(c interface{}) error {
+	// Make sure the types match.
+	ct := reflect.TypeOf(c)
+	xt := reflect.TypeOf(m.x)
+
+	if ct != xt {
+		return NewFatalError(fmt.Sprintf("which is of type %v", ct))
+	}
+
+	// Special case: handle byte slices more efficiently.
+	cValue := reflect.ValueOf(c)
+	xValue := reflect.ValueOf(m.x)
+
+	if ct == byteSliceType && !cValue.IsNil() && !xValue.IsNil() {
+		xBytes := m.x.([]byte)
+		cBytes := c.([]byte)
+
+		if bytes.Equal(cBytes, xBytes) {
+			return nil
+		}
+
+		return errors.New("")
+	}
+
+	// Defer to the reflect package.
+	if reflect.DeepEqual(m.x, c) {
+		return nil
+	}
+
+	// Special case: if the comparison failed because c is the nil slice, given
+	// an indication of this (since its value is printed as "[]").
+	if cValue.Kind() == reflect.Slice && cValue.IsNil() {
+		return errors.New("which is nil")
+	}
+
+	return errors.New("")
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/deep_equals_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/deep_equals_test.go
new file mode 100644
index 00000000000..a28113aaa6b
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/deep_equals_test.go
@@ -0,0 +1,343 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+	"bytes"
+	"testing"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type DeepEqualsTest struct {}
+func init() { RegisterTestSuite(&DeepEqualsTest{}) }
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *DeepEqualsTest) WrongTypeCandidateWithScalarValue() {
+	var x int = 17
+	m := DeepEquals(x)
+
+	var err error
+
+	// Nil candidate.
+	err = m.Matches(nil)
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("<nil>")))
+
+	// Int alias candidate.
+	type intAlias int
+	err = m.Matches(intAlias(x))
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("intAlias")))
+
+	// String candidate.
+	err = m.Matches("taco")
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("string")))
+
+	// Byte slice candidate.
+	err = m.Matches([]byte{})
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("[]uint8")))
+
+	// Other slice candidate.
+	err = m.Matches([]uint16{})
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("[]uint16")))
+
+	// Unsigned int candidate.
+	err = m.Matches(uint(17))
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("uint")))
+}
+
+func (t *DeepEqualsTest) WrongTypeCandidateWithByteSliceValue() {
+	x := []byte{}
+	m := DeepEquals(x)
+
+	var err error
+
+	// Nil candidate.
+	err = m.Matches(nil)
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("<nil>")))
+
+	// String candidate.
+	err = m.Matches("taco")
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("string")))
+
+	// Slice candidate with wrong value type.
+	err = m.Matches([]uint16{})
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("[]uint16")))
+}
+
+func (t *DeepEqualsTest) WrongTypeCandidateWithOtherSliceValue() {
+	x := []uint16{}
+	m := DeepEquals(x)
+
+	var err error
+
+	// Nil candidate.
+	err = m.Matches(nil)
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("<nil>")))
+
+	// String candidate.
+	err = m.Matches("taco")
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("string")))
+
+	// Byte slice candidate with wrong value type.
+	err = m.Matches([]byte{})
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("[]uint8")))
+
+	// Other slice candidate with wrong value type.
+	err = m.Matches([]uint32{})
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("[]uint32")))
+}
+
+func (t *DeepEqualsTest) WrongTypeCandidateWithNilLiteralValue() {
+	m := DeepEquals(nil)
+
+	var err error
+
+	// String candidate.
+	err = m.Matches("taco")
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("string")))
+
+	// Nil byte slice candidate.
+	err = m.Matches([]byte(nil))
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("[]uint8")))
+
+	// Nil other slice candidate.
+	err = m.Matches([]uint16(nil))
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("type")))
+	ExpectThat(err, Error(HasSubstr("[]uint16")))
+}
+
+func (t *DeepEqualsTest) NilLiteralValue() {
+	m := DeepEquals(nil)
+	ExpectEq("deep equals: <nil>", m.Description())
+
+	var c interface{}
+	var err error
+
+	// Nil literal candidate.
+	c = nil
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+}
+
+func (t *DeepEqualsTest) IntValue() {
+	m := DeepEquals(int(17))
+	ExpectEq("deep equals: 17", m.Description())
+
+	var c interface{}
+	var err error
+
+	// Matching int.
+	c = int(17)
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Non-matching int.
+	c = int(18)
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+}
+
+func (t *DeepEqualsTest) ByteSliceValue() {
+	x := []byte{17, 19}
+	m := DeepEquals(x)
+	ExpectEq("deep equals: [17 19]", m.Description())
+
+	var c []byte
+	var err error
+
+	// Matching.
+	c = make([]byte, len(x))
+	AssertEq(len(x), copy(c, x))
+
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Nil slice.
+	c = []byte(nil)
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("which is nil")))
+
+	// Prefix.
+	AssertGt(len(x), 1)
+	c = make([]byte, len(x)-1)
+	AssertEq(len(x)-1, copy(c, x))
+
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Suffix.
+	c = make([]byte, len(x)+1)
+	AssertEq(len(x), copy(c, x))
+
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+}
+
+func (t *DeepEqualsTest) OtherSliceValue() {
+	x := []uint16{17, 19}
+	m := DeepEquals(x)
+	ExpectEq("deep equals: [17 19]", m.Description())
+
+	var c []uint16
+	var err error
+
+	// Matching.
+	c = make([]uint16, len(x))
+	AssertEq(len(x), copy(c, x))
+
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Nil slice.
+	c = []uint16(nil)
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("which is nil")))
+
+	// Prefix.
+	AssertGt(len(x), 1)
+	c = make([]uint16, len(x)-1)
+	AssertEq(len(x)-1, copy(c, x))
+
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+
+	// Suffix.
+	c = make([]uint16, len(x)+1)
+	AssertEq(len(x), copy(c, x))
+
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+}
+
+func (t *DeepEqualsTest) NilByteSliceValue() {
+	x := []byte(nil)
+	m := DeepEquals(x)
+	ExpectEq("deep equals: <nil slice>", m.Description())
+
+	var c []byte
+	var err error
+
+	// Nil slice.
+	c = []byte(nil)
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Non-nil slice.
+	c = []byte{}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+}
+
+func (t *DeepEqualsTest) NilOtherSliceValue() {
+	x := []uint16(nil)
+	m := DeepEquals(x)
+	ExpectEq("deep equals: <nil slice>", m.Description())
+
+	var c []uint16
+	var err error
+
+	// Nil slice.
+	c = []uint16(nil)
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Non-nil slice.
+	c = []uint16{}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("")))
+}
+
+////////////////////////////////////////////////////////////////////////
+// Benchmarks
+////////////////////////////////////////////////////////////////////////
+
+func benchmarkWithSize(b *testing.B, size int) {
+	b.StopTimer()
+	buf := bytes.Repeat([]byte{0x01}, size)
+	bufCopy := make([]byte, size)
+	copy(bufCopy, buf)
+
+	matcher := DeepEquals(buf)
+	b.StartTimer()
+
+	for i := 0; i < b.N; i++ {
+		matcher.Matches(bufCopy)
+	}
+
+	b.SetBytes(int64(size))
+}
+
+func BenchmarkShortByteSlice(b *testing.B) {
+	benchmarkWithSize(b, 256)
+}
+
+func BenchmarkLongByteSlice(b *testing.B) {
+	benchmarkWithSize(b, 1<<24)
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/elements_are.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/elements_are.go
new file mode 100644
index 00000000000..2941847c705
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/elements_are.go
@@ -0,0 +1,91 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+// Given a list of arguments M, ElementsAre returns a matcher that matches
+// arrays and slices A where all of the following hold:
+//
+//  *  A is the same length as M.
+//
+//  *  For each i < len(A) where M[i] is a matcher, A[i] matches M[i].
+//
+//  *  For each i < len(A) where M[i] is not a matcher, A[i] matches
+//     Equals(M[i]).
+//
+func ElementsAre(M ...interface{}) Matcher {
+	// Copy over matchers, or convert to Equals(x) for non-matcher x.
+	subMatchers := make([]Matcher, len(M))
+	for i, x := range M {
+		if matcher, ok := x.(Matcher); ok {
+			subMatchers[i] = matcher
+			continue
+		}
+
+		subMatchers[i] = Equals(x)
+	}
+
+	return &elementsAreMatcher{subMatchers}
+}
+
+type elementsAreMatcher struct {
+	subMatchers []Matcher
+}
+
+func (m *elementsAreMatcher) Description() string {
+	subDescs := make([]string, len(m.subMatchers))
+	for i, sm := range m.subMatchers {
+		subDescs[i] = sm.Description()
+	}
+
+	return fmt.Sprintf("elements are: [%s]", strings.Join(subDescs, ", "))
+}
+
+func (m *elementsAreMatcher) Matches(candidates interface{}) error {
+	// The candidate must be a slice or an array.
+	v := reflect.ValueOf(candidates)
+	if v.Kind() != reflect.Slice && v.Kind() != reflect.Array {
+		return NewFatalError("which is not a slice or array")
+	}
+
+	// The length must be correct.
+	if v.Len() != len(m.subMatchers) {
+		return errors.New(fmt.Sprintf("which is of length %d", v.Len()))
+	}
+
+	// Check each element.
+	for i, subMatcher := range m.subMatchers {
+		c := v.Index(i)
+		if matchErr := subMatcher.Matches(c.Interface()); matchErr != nil {
+			// Return an errors indicating which element doesn't match. If the
+			// matcher error was fatal, make this one fatal too.
+			err := errors.New(fmt.Sprintf("whose element %d doesn't match", i))
+			if _, isFatal := matchErr.(*FatalError); isFatal {
+				err = NewFatalError(err.Error())
+			}
+
+			return err
+		}
+	}
+
+	return nil
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/elements_are_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/elements_are_test.go
new file mode 100644
index 00000000000..172584fa140
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/elements_are_test.go
@@ -0,0 +1,208 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type ElementsAreTest struct {
+}
+
+func init()                     { RegisterTestSuite(&ElementsAreTest{}) }
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *ElementsAreTest) EmptySet() {
+	m := ElementsAre()
+	ExpectEq("elements are: []", m.Description())
+
+	var c []interface{}
+	var err error
+
+	// No candidates.
+	c = []interface{}{}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// One candidate.
+	c = []interface{}{17}
+	err = m.Matches(c)
+	ExpectThat(err, Error(HasSubstr("length 1")))
+}
+
+func (t *ElementsAreTest) OneMatcher() {
+	m := ElementsAre(LessThan(17))
+	ExpectEq("elements are: [less than 17]", m.Description())
+
+	var c []interface{}
+	var err error
+
+	// No candidates.
+	c = []interface{}{}
+	err = m.Matches(c)
+	ExpectThat(err, Error(HasSubstr("length 0")))
+
+	// Matching candidate.
+	c = []interface{}{16}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Non-matching candidate.
+	c = []interface{}{19}
+	err = m.Matches(c)
+	ExpectNe(nil, err)
+
+	// Two candidates.
+	c = []interface{}{17, 19}
+	err = m.Matches(c)
+	ExpectThat(err, Error(HasSubstr("length 2")))
+}
+
+func (t *ElementsAreTest) OneValue() {
+	m := ElementsAre(17)
+	ExpectEq("elements are: [17]", m.Description())
+
+	var c []interface{}
+	var err error
+
+	// No candidates.
+	c = []interface{}{}
+	err = m.Matches(c)
+	ExpectThat(err, Error(HasSubstr("length 0")))
+
+	// Matching int.
+	c = []interface{}{int(17)}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Matching float.
+	c = []interface{}{float32(17)}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// Non-matching candidate.
+	c = []interface{}{19}
+	err = m.Matches(c)
+	ExpectNe(nil, err)
+
+	// Two candidates.
+	c = []interface{}{17, 19}
+	err = m.Matches(c)
+	ExpectThat(err, Error(HasSubstr("length 2")))
+}
+
+func (t *ElementsAreTest) MultipleElements() {
+	m := ElementsAre("taco", LessThan(17))
+	ExpectEq("elements are: [taco, less than 17]", m.Description())
+
+	var c []interface{}
+	var err error
+
+	// One candidate.
+	c = []interface{}{17}
+	err = m.Matches(c)
+	ExpectThat(err, Error(HasSubstr("length 1")))
+
+	// Both matching.
+	c = []interface{}{"taco", 16}
+	err = m.Matches(c)
+	ExpectEq(nil, err)
+
+	// First non-matching.
+	c = []interface{}{"burrito", 16}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("whose element 0 doesn't match")))
+
+	// Second non-matching.
+	c = []interface{}{"taco", 17}
+	err = m.Matches(c)
+	ExpectThat(err, Error(Equals("whose element 1 doesn't match")))
+
+	// Three candidates.
+	c = []interface{}{"taco", 17, 19}
+	err = m.Matches(c)
+	ExpectThat(err, Error(HasSubstr("length 3")))
+}
+
+func (t *ElementsAreTest) ArrayCandidates() {
+	m := ElementsAre("taco", LessThan(17))
+
+	var err error
+
+	// One candidate.
+	err = m.Matches([1]interface{}{"taco"})
+	ExpectThat(err, Error(HasSubstr("length 1")))
+
+	// Both matching.
+	err = m.Matches([2]interface{}{"taco", 16})
+	ExpectEq(nil, err)
+
+	// First non-matching.
+	err = m.Matches([2]interface{}{"burrito", 16})
+	ExpectThat(err, Error(Equals("whose element 0 doesn't match")))
+}
+
+func (t *ElementsAreTest) WrongTypeCandidate() {
+	m := ElementsAre("taco")
+
+	var err error
+
+	// String candidate.
+	err = m.Matches("taco")
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("array")))
+	ExpectThat(err, Error(HasSubstr("slice")))
+
+	// Map candidate.
+	err = m.Matches(map[string]string{})
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("array")))
+	ExpectThat(err, Error(HasSubstr("slice")))
+
+	// Nil candidate.
+	err = m.Matches(nil)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("array")))
+	ExpectThat(err, Error(HasSubstr("slice")))
+}
+
+func (t *ElementsAreTest) PropagatesFatality() {
+	m := ElementsAre(LessThan(17))
+	ExpectEq("elements are: [less than 17]", m.Description())
+
+	var c []interface{}
+	var err error
+
+	// Non-fatal error.
+	c = []interface{}{19}
+	err = m.Matches(c)
+	AssertNe(nil, err)
+	ExpectFalse(isFatal(err))
+
+	// Fatal error.
+	c = []interface{}{"taco"}
+	err = m.Matches(c)
+	AssertNe(nil, err)
+	ExpectTrue(isFatal(err))
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/equals.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/equals.go
new file mode 100644
index 00000000000..a510707b3c7
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/equals.go
@@ -0,0 +1,541 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"math"
+	"reflect"
+)
+
+// Equals(x) returns a matcher that matches values v such that v and x are
+// equivalent. This includes the case when the comparison v == x using Go's
+// built-in comparison operator is legal (except for structs, which this
+// matcher does not support), but for convenience the following rules also
+// apply:
+//
+//  *  Type checking is done based on underlying types rather than actual
+//     types, so that e.g. two aliases for string can be compared:
+//
+//         type stringAlias1 string
+//         type stringAlias2 string
+//
+//         a := "taco"
+//         b := stringAlias1("taco")
+//         c := stringAlias2("taco")
+//
+//         ExpectTrue(a == b)  // Legal, passes
+//         ExpectTrue(b == c)  // Illegal, doesn't compile
+//
+//         ExpectThat(a, Equals(b))  // Passes
+//         ExpectThat(b, Equals(c))  // Passes
+//
+//  *  Values of numeric type are treated as if they were abstract numbers, and
+//     compared accordingly. Therefore Equals(17) will match int(17),
+//     int16(17), uint(17), float32(17), complex64(17), and so on.
+//
+// If you want a stricter matcher that contains no such cleverness, see
+// IdenticalTo instead.
+//
+// Arrays are supported by this matcher, but do not participate in the
+// exceptions above. Two arrays compared with this matcher must have identical
+// types, and their element type must itself be comparable according to Go's ==
+// operator.
+func Equals(x interface{}) Matcher {
+	v := reflect.ValueOf(x)
+
+	// This matcher doesn't support structs.
+	if v.Kind() == reflect.Struct {
+		panic(fmt.Sprintf("oglematchers.Equals: unsupported kind %v", v.Kind()))
+	}
+
+	// The == operator is not defined for non-nil slices.
+	if v.Kind() == reflect.Slice && v.Pointer() != uintptr(0) {
+		panic(fmt.Sprintf("oglematchers.Equals: non-nil slice"))
+	}
+
+	return &equalsMatcher{v}
+}
+
+type equalsMatcher struct {
+	expectedValue reflect.Value
+}
+
+////////////////////////////////////////////////////////////////////////
+// Numeric types
+////////////////////////////////////////////////////////////////////////
+
+func isSignedInteger(v reflect.Value) bool {
+	k := v.Kind()
+	return k >= reflect.Int && k <= reflect.Int64
+}
+
+func isUnsignedInteger(v reflect.Value) bool {
+	k := v.Kind()
+	return k >= reflect.Uint && k <= reflect.Uintptr
+}
+
+func isInteger(v reflect.Value) bool {
+	return isSignedInteger(v) || isUnsignedInteger(v)
+}
+
+func isFloat(v reflect.Value) bool {
+	k := v.Kind()
+	return k == reflect.Float32 || k == reflect.Float64
+}
+
+func isComplex(v reflect.Value) bool {
+	k := v.Kind()
+	return k == reflect.Complex64 || k == reflect.Complex128
+}
+
+func checkAgainstInt64(e int64, c reflect.Value) (err error) {
+	err = errors.New("")
+
+	switch {
+	case isSignedInteger(c):
+		if c.Int() == e {
+			err = nil
+		}
+
+	case isUnsignedInteger(c):
+		u := c.Uint()
+		if u <= math.MaxInt64 && int64(u) == e {
+			err = nil
+		}
+
+	// Turn around the various floating point types so that the checkAgainst*
+	// functions for them can deal with precision issues.
+	case isFloat(c), isComplex(c):
+		return Equals(c.Interface()).Matches(e)
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstUint64(e uint64, c reflect.Value) (err error) {
+	err = errors.New("")
+
+	switch {
+	case isSignedInteger(c):
+		i := c.Int()
+		if i >= 0 && uint64(i) == e {
+			err = nil
+		}
+
+	case isUnsignedInteger(c):
+		if c.Uint() == e {
+			err = nil
+		}
+
+	// Turn around the various floating point types so that the checkAgainst*
+	// functions for them can deal with precision issues.
+	case isFloat(c), isComplex(c):
+		return Equals(c.Interface()).Matches(e)
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstFloat32(e float32, c reflect.Value) (err error) {
+	err = errors.New("")
+
+	switch {
+	case isSignedInteger(c):
+		if float32(c.Int()) == e {
+			err = nil
+		}
+
+	case isUnsignedInteger(c):
+		if float32(c.Uint()) == e {
+			err = nil
+		}
+
+	case isFloat(c):
+		// Compare using float32 to avoid a false sense of precision; otherwise
+		// e.g. Equals(float32(0.1)) won't match float32(0.1).
+		if float32(c.Float()) == e {
+			err = nil
+		}
+
+	case isComplex(c):
+		comp := c.Complex()
+		rl := real(comp)
+		im := imag(comp)
+
+		// Compare using float32 to avoid a false sense of precision; otherwise
+		// e.g. Equals(float32(0.1)) won't match (0.1 + 0i).
+		if im == 0 && float32(rl) == e {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstFloat64(e float64, c reflect.Value) (err error) {
+	err = errors.New("")
+
+	ck := c.Kind()
+
+	switch {
+	case isSignedInteger(c):
+		if float64(c.Int()) == e {
+			err = nil
+		}
+
+	case isUnsignedInteger(c):
+		if float64(c.Uint()) == e {
+			err = nil
+		}
+
+	// If the actual value is lower precision, turn the comparison around so we
+	// apply the low-precision rules. Otherwise, e.g. Equals(0.1) may not match
+	// float32(0.1).
+	case ck == reflect.Float32 || ck == reflect.Complex64:
+		return Equals(c.Interface()).Matches(e)
+
+		// Otherwise, compare with double precision.
+	case isFloat(c):
+		if c.Float() == e {
+			err = nil
+		}
+
+	case isComplex(c):
+		comp := c.Complex()
+		rl := real(comp)
+		im := imag(comp)
+
+		if im == 0 && rl == e {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstComplex64(e complex64, c reflect.Value) (err error) {
+	err = errors.New("")
+	realPart := real(e)
+	imaginaryPart := imag(e)
+
+	switch {
+	case isInteger(c) || isFloat(c):
+		// If we have no imaginary part, then we should just compare against the
+		// real part. Otherwise, we can't be equal.
+		if imaginaryPart != 0 {
+			return
+		}
+
+		return checkAgainstFloat32(realPart, c)
+
+	case isComplex(c):
+		// Compare using complex64 to avoid a false sense of precision; otherwise
+		// e.g. Equals(0.1 + 0i) won't match float32(0.1).
+		if complex64(c.Complex()) == e {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+func checkAgainstComplex128(e complex128, c reflect.Value) (err error) {
+	err = errors.New("")
+	realPart := real(e)
+	imaginaryPart := imag(e)
+
+	switch {
+	case isInteger(c) || isFloat(c):
+		// If we have no imaginary part, then we should just compare against the
+		// real part. Otherwise, we can't be equal.
+		if imaginaryPart != 0 {
+			return
+		}
+
+		return checkAgainstFloat64(realPart, c)
+
+	case isComplex(c):
+		if c.Complex() == e {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not numeric")
+	}
+
+	return
+}
+
+////////////////////////////////////////////////////////////////////////
+// Other types
+////////////////////////////////////////////////////////////////////////
+
+func checkAgainstBool(e bool, c reflect.Value) (err error) {
+	if c.Kind() != reflect.Bool {
+		err = NewFatalError("which is not a bool")
+		return
+	}
+
+	err = errors.New("")
+	if c.Bool() == e {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstChan(e reflect.Value, c reflect.Value) (err error) {
+	// Create a description of e's type, e.g. "chan int".
+	typeStr := fmt.Sprintf("%s %s", e.Type().ChanDir(), e.Type().Elem())
+
+	// Make sure c is a chan of the correct type.
+	if c.Kind() != reflect.Chan ||
+		c.Type().ChanDir() != e.Type().ChanDir() ||
+		c.Type().Elem() != e.Type().Elem() {
+		err = NewFatalError(fmt.Sprintf("which is not a %s", typeStr))
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstFunc(e reflect.Value, c reflect.Value) (err error) {
+	// Make sure c is a function.
+	if c.Kind() != reflect.Func {
+		err = NewFatalError("which is not a function")
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstMap(e reflect.Value, c reflect.Value) (err error) {
+	// Make sure c is a map.
+	if c.Kind() != reflect.Map {
+		err = NewFatalError("which is not a map")
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstPtr(e reflect.Value, c reflect.Value) (err error) {
+	// Create a description of e's type, e.g. "*int".
+	typeStr := fmt.Sprintf("*%v", e.Type().Elem())
+
+	// Make sure c is a pointer of the correct type.
+	if c.Kind() != reflect.Ptr ||
+		c.Type().Elem() != e.Type().Elem() {
+		err = NewFatalError(fmt.Sprintf("which is not a %s", typeStr))
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstSlice(e reflect.Value, c reflect.Value) (err error) {
+	// Create a description of e's type, e.g. "[]int".
+	typeStr := fmt.Sprintf("[]%v", e.Type().Elem())
+
+	// Make sure c is a slice of the correct type.
+	if c.Kind() != reflect.Slice ||
+		c.Type().Elem() != e.Type().Elem() {
+		err = NewFatalError(fmt.Sprintf("which is not a %s", typeStr))
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstString(e reflect.Value, c reflect.Value) (err error) {
+	// Make sure c is a string.
+	if c.Kind() != reflect.String {
+		err = NewFatalError("which is not a string")
+		return
+	}
+
+	err = errors.New("")
+	if c.String() == e.String() {
+		err = nil
+	}
+	return
+}
+
+func checkAgainstArray(e reflect.Value, c reflect.Value) (err error) {
+	// Create a description of e's type, e.g. "[2]int".
+	typeStr := fmt.Sprintf("%v", e.Type())
+
+	// Make sure c is the correct type.
+	if c.Type() != e.Type() {
+		err = NewFatalError(fmt.Sprintf("which is not %s", typeStr))
+		return
+	}
+
+	// Check for equality.
+	if e.Interface() != c.Interface() {
+		err = errors.New("")
+		return
+	}
+
+	return
+}
+
+func checkAgainstUnsafePointer(e reflect.Value, c reflect.Value) (err error) {
+	// Make sure c is a pointer.
+	if c.Kind() != reflect.UnsafePointer {
+		err = NewFatalError("which is not a unsafe.Pointer")
+		return
+	}
+
+	err = errors.New("")
+	if c.Pointer() == e.Pointer() {
+		err = nil
+	}
+	return
+}
+
+func checkForNil(c reflect.Value) (err error) {
+	err = errors.New("")
+
+	// Make sure it is legal to call IsNil.
+	switch c.Kind() {
+	case reflect.Invalid:
+	case reflect.Chan:
+	case reflect.Func:
+	case reflect.Interface:
+	case reflect.Map:
+	case reflect.Ptr:
+	case reflect.Slice:
+
+	default:
+		err = NewFatalError("which cannot be compared to nil")
+		return
+	}
+
+	// Ask whether the value is nil. Handle a nil literal (kind Invalid)
+	// specially, since it's not legal to call IsNil there.
+	if c.Kind() == reflect.Invalid || c.IsNil() {
+		err = nil
+	}
+	return
+}
+
+////////////////////////////////////////////////////////////////////////
+// Public implementation
+////////////////////////////////////////////////////////////////////////
+
+func (m *equalsMatcher) Matches(candidate interface{}) error {
+	e := m.expectedValue
+	c := reflect.ValueOf(candidate)
+	ek := e.Kind()
+
+	switch {
+	case ek == reflect.Bool:
+		return checkAgainstBool(e.Bool(), c)
+
+	case isSignedInteger(e):
+		return checkAgainstInt64(e.Int(), c)
+
+	case isUnsignedInteger(e):
+		return checkAgainstUint64(e.Uint(), c)
+
+	case ek == reflect.Float32:
+		return checkAgainstFloat32(float32(e.Float()), c)
+
+	case ek == reflect.Float64:
+		return checkAgainstFloat64(e.Float(), c)
+
+	case ek == reflect.Complex64:
+		return checkAgainstComplex64(complex64(e.Complex()), c)
+
+	case ek == reflect.Complex128:
+		return checkAgainstComplex128(complex128(e.Complex()), c)
+
+	case ek == reflect.Chan:
+		return checkAgainstChan(e, c)
+
+	case ek == reflect.Func:
+		return checkAgainstFunc(e, c)
+
+	case ek == reflect.Map:
+		return checkAgainstMap(e, c)
+
+	case ek == reflect.Ptr:
+		return checkAgainstPtr(e, c)
+
+	case ek == reflect.Slice:
+		return checkAgainstSlice(e, c)
+
+	case ek == reflect.String:
+		return checkAgainstString(e, c)
+
+	case ek == reflect.Array:
+		return checkAgainstArray(e, c)
+
+	case ek == reflect.UnsafePointer:
+		return checkAgainstUnsafePointer(e, c)
+
+	case ek == reflect.Invalid:
+		return checkForNil(c)
+	}
+
+	panic(fmt.Sprintf("equalsMatcher.Matches: unexpected kind: %v", ek))
+}
+
+func (m *equalsMatcher) Description() string {
+	// Special case: handle nil.
+	if !m.expectedValue.IsValid() {
+		return "is nil"
+	}
+
+	return fmt.Sprintf("%v", m.expectedValue.Interface())
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/equals_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/equals_test.go
new file mode 100644
index 00000000000..6ac5df27329
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/equals_test.go
@@ -0,0 +1,3864 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	"fmt"
+	"math"
+	"unsafe"
+
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+var someInt int = -17
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type EqualsTest struct {
+}
+
+func init() { RegisterTestSuite(&EqualsTest{}) }
+
+type equalsTestCase struct {
+	candidate      interface{}
+	expectedResult bool
+	shouldBeFatal  bool
+	expectedError  string
+}
+
+func (t *EqualsTest) checkTestCases(matcher Matcher, cases []equalsTestCase) {
+	for i, c := range cases {
+		err := matcher.Matches(c.candidate)
+		ExpectEq(
+			c.expectedResult,
+			(err == nil),
+			"Result for case %d: %v (Error: %v)", i, c, err)
+
+		if err == nil {
+			continue
+		}
+
+		_, isFatal := err.(*FatalError)
+		ExpectEq(c.shouldBeFatal, isFatal, "Fatality for case %d: %v", i, c)
+
+		ExpectThat(err, Error(Equals(c.expectedError)), "Case %d: %v", i, c)
+	}
+}
+
+////////////////////////////////////////////////////////////////////////
+// nil
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) EqualsNil() {
+	matcher := Equals(nil)
+	ExpectEq("is nil", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Legal types
+		equalsTestCase{nil, true, false, ""},
+		equalsTestCase{chan int(nil), true, false, ""},
+		equalsTestCase{(func())(nil), true, false, ""},
+		equalsTestCase{interface{}(nil), true, false, ""},
+		equalsTestCase{map[int]int(nil), true, false, ""},
+		equalsTestCase{(*int)(nil), true, false, ""},
+		equalsTestCase{[]int(nil), true, false, ""},
+
+		equalsTestCase{make(chan int), false, false, ""},
+		equalsTestCase{func() {}, false, false, ""},
+		equalsTestCase{map[int]int{}, false, false, ""},
+		equalsTestCase{&someInt, false, false, ""},
+		equalsTestCase{[]int{}, false, false, ""},
+
+		// Illegal types
+		equalsTestCase{17, false, true, "which cannot be compared to nil"},
+		equalsTestCase{int8(17), false, true, "which cannot be compared to nil"},
+		equalsTestCase{uintptr(17), false, true, "which cannot be compared to nil"},
+		equalsTestCase{[...]int{}, false, true, "which cannot be compared to nil"},
+		equalsTestCase{"taco", false, true, "which cannot be compared to nil"},
+		equalsTestCase{equalsTestCase{}, false, true, "which cannot be compared to nil"},
+		equalsTestCase{unsafe.Pointer(&someInt), false, true, "which cannot be compared to nil"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Integer literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NegativeIntegerLiteral() {
+	// -2^30
+	matcher := Equals(-1073741824)
+	ExpectEq("-1073741824", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of -1073741824.
+		equalsTestCase{-1073741824, true, false, ""},
+		equalsTestCase{-1073741824.0, true, false, ""},
+		equalsTestCase{-1073741824 + 0i, true, false, ""},
+		equalsTestCase{int(-1073741824), true, false, ""},
+		equalsTestCase{int32(-1073741824), true, false, ""},
+		equalsTestCase{int64(-1073741824), true, false, ""},
+		equalsTestCase{float32(-1073741824), true, false, ""},
+		equalsTestCase{float64(-1073741824), true, false, ""},
+		equalsTestCase{complex64(-1073741824), true, false, ""},
+		equalsTestCase{complex128(-1073741824), true, false, ""},
+		equalsTestCase{interface{}(int(-1073741824)), true, false, ""},
+
+		// Values that would be -1073741824 in two's complement.
+		equalsTestCase{uint((1 << 32) - 1073741824), false, false, ""},
+		equalsTestCase{uint32((1 << 32) - 1073741824), false, false, ""},
+		equalsTestCase{uint64((1 << 64) - 1073741824), false, false, ""},
+		equalsTestCase{uintptr((1 << 64) - 1073741824), false, false, ""},
+
+		// Non-equal values of signed integer type.
+		equalsTestCase{int(-1073741823), false, false, ""},
+		equalsTestCase{int32(-1073741823), false, false, ""},
+		equalsTestCase{int64(-1073741823), false, false, ""},
+
+		// Non-equal values of other numeric types.
+		equalsTestCase{float64(-1073741824.1), false, false, ""},
+		equalsTestCase{float64(-1073741823.9), false, false, ""},
+		equalsTestCase{complex128(-1073741823), false, false, ""},
+		equalsTestCase{complex128(-1073741824 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveIntegerLiteral() {
+	// 2^30
+	matcher := Equals(1073741824)
+	ExpectEq("1073741824", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 1073741824.
+		equalsTestCase{1073741824, true, false, ""},
+		equalsTestCase{1073741824.0, true, false, ""},
+		equalsTestCase{1073741824 + 0i, true, false, ""},
+		equalsTestCase{int(1073741824), true, false, ""},
+		equalsTestCase{uint(1073741824), true, false, ""},
+		equalsTestCase{int32(1073741824), true, false, ""},
+		equalsTestCase{int64(1073741824), true, false, ""},
+		equalsTestCase{uint32(1073741824), true, false, ""},
+		equalsTestCase{uint64(1073741824), true, false, ""},
+		equalsTestCase{uintptr(1073741824), true, false, ""},
+		equalsTestCase{float32(1073741824), true, false, ""},
+		equalsTestCase{float64(1073741824), true, false, ""},
+		equalsTestCase{complex64(1073741824), true, false, ""},
+		equalsTestCase{complex128(1073741824), true, false, ""},
+		equalsTestCase{interface{}(int(1073741824)), true, false, ""},
+		equalsTestCase{interface{}(uint(1073741824)), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(1073741823), false, false, ""},
+		equalsTestCase{int32(1073741823), false, false, ""},
+		equalsTestCase{int64(1073741823), false, false, ""},
+		equalsTestCase{float64(1073741824.1), false, false, ""},
+		equalsTestCase{float64(1073741823.9), false, false, ""},
+		equalsTestCase{complex128(1073741823), false, false, ""},
+		equalsTestCase{complex128(1073741824 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Floating point literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NegativeIntegralFloatingPointLiteral() {
+	// -2^30
+	matcher := Equals(-1073741824.0)
+	ExpectEq("-1.073741824e+09", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of -1073741824.
+		equalsTestCase{-1073741824, true, false, ""},
+		equalsTestCase{-1073741824.0, true, false, ""},
+		equalsTestCase{-1073741824 + 0i, true, false, ""},
+		equalsTestCase{int(-1073741824), true, false, ""},
+		equalsTestCase{int32(-1073741824), true, false, ""},
+		equalsTestCase{int64(-1073741824), true, false, ""},
+		equalsTestCase{float32(-1073741824), true, false, ""},
+		equalsTestCase{float64(-1073741824), true, false, ""},
+		equalsTestCase{complex64(-1073741824), true, false, ""},
+		equalsTestCase{complex128(-1073741824), true, false, ""},
+		equalsTestCase{interface{}(int(-1073741824)), true, false, ""},
+		equalsTestCase{interface{}(float64(-1073741824)), true, false, ""},
+
+		// Values that would be -1073741824 in two's complement.
+		equalsTestCase{uint((1 << 32) - 1073741824), false, false, ""},
+		equalsTestCase{uint32((1 << 32) - 1073741824), false, false, ""},
+		equalsTestCase{uint64((1 << 64) - 1073741824), false, false, ""},
+		equalsTestCase{uintptr((1 << 64) - 1073741824), false, false, ""},
+
+		// Non-equal values of signed integer type.
+		equalsTestCase{int(-1073741823), false, false, ""},
+		equalsTestCase{int32(-1073741823), false, false, ""},
+		equalsTestCase{int64(-1073741823), false, false, ""},
+
+		// Non-equal values of other numeric types.
+		equalsTestCase{float64(-1073741824.1), false, false, ""},
+		equalsTestCase{float64(-1073741823.9), false, false, ""},
+		equalsTestCase{complex128(-1073741823), false, false, ""},
+		equalsTestCase{complex128(-1073741824 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveIntegralFloatingPointLiteral() {
+	// 2^30
+	matcher := Equals(1073741824.0)
+	ExpectEq("1.073741824e+09", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 1073741824.
+		equalsTestCase{1073741824, true, false, ""},
+		equalsTestCase{1073741824.0, true, false, ""},
+		equalsTestCase{1073741824 + 0i, true, false, ""},
+		equalsTestCase{int(1073741824), true, false, ""},
+		equalsTestCase{int32(1073741824), true, false, ""},
+		equalsTestCase{int64(1073741824), true, false, ""},
+		equalsTestCase{uint(1073741824), true, false, ""},
+		equalsTestCase{uint32(1073741824), true, false, ""},
+		equalsTestCase{uint64(1073741824), true, false, ""},
+		equalsTestCase{float32(1073741824), true, false, ""},
+		equalsTestCase{float64(1073741824), true, false, ""},
+		equalsTestCase{complex64(1073741824), true, false, ""},
+		equalsTestCase{complex128(1073741824), true, false, ""},
+		equalsTestCase{interface{}(int(1073741824)), true, false, ""},
+		equalsTestCase{interface{}(float64(1073741824)), true, false, ""},
+
+		// Values that would be 1073741824 in two's complement.
+		equalsTestCase{uint((1 << 32) - 1073741824), false, false, ""},
+		equalsTestCase{uint32((1 << 32) - 1073741824), false, false, ""},
+		equalsTestCase{uint64((1 << 64) - 1073741824), false, false, ""},
+		equalsTestCase{uintptr((1 << 64) - 1073741824), false, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(1073741823), false, false, ""},
+		equalsTestCase{int32(1073741823), false, false, ""},
+		equalsTestCase{int64(1073741823), false, false, ""},
+		equalsTestCase{uint(1073741823), false, false, ""},
+		equalsTestCase{uint32(1073741823), false, false, ""},
+		equalsTestCase{uint64(1073741823), false, false, ""},
+		equalsTestCase{float64(1073741824.1), false, false, ""},
+		equalsTestCase{float64(1073741823.9), false, false, ""},
+		equalsTestCase{complex128(1073741823), false, false, ""},
+		equalsTestCase{complex128(1073741824 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) NonIntegralFloatingPointLiteral() {
+	matcher := Equals(17.1)
+	ExpectEq("17.1", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 17.1.
+		equalsTestCase{17.1, true, false, ""},
+		equalsTestCase{17.1, true, false, ""},
+		equalsTestCase{17.1 + 0i, true, false, ""},
+		equalsTestCase{float32(17.1), true, false, ""},
+		equalsTestCase{float64(17.1), true, false, ""},
+		equalsTestCase{complex64(17.1), true, false, ""},
+		equalsTestCase{complex128(17.1), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{17, false, false, ""},
+		equalsTestCase{17.2, false, false, ""},
+		equalsTestCase{18, false, false, ""},
+		equalsTestCase{int(17), false, false, ""},
+		equalsTestCase{int(18), false, false, ""},
+		equalsTestCase{int32(17), false, false, ""},
+		equalsTestCase{int64(17), false, false, ""},
+		equalsTestCase{uint(17), false, false, ""},
+		equalsTestCase{uint32(17), false, false, ""},
+		equalsTestCase{uint64(17), false, false, ""},
+		equalsTestCase{uintptr(17), false, false, ""},
+		equalsTestCase{complex128(17.1 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// bool
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) False() {
+	matcher := Equals(false)
+	ExpectEq("false", matcher.Description())
+
+	cases := []equalsTestCase{
+		// bools
+		equalsTestCase{false, true, false, ""},
+		equalsTestCase{bool(false), true, false, ""},
+
+		equalsTestCase{true, false, false, ""},
+		equalsTestCase{bool(true), false, false, ""},
+
+		// Other types.
+		equalsTestCase{int(0), false, true, "which is not a bool"},
+		equalsTestCase{int8(0), false, true, "which is not a bool"},
+		equalsTestCase{int16(0), false, true, "which is not a bool"},
+		equalsTestCase{int32(0), false, true, "which is not a bool"},
+		equalsTestCase{int64(0), false, true, "which is not a bool"},
+		equalsTestCase{uint(0), false, true, "which is not a bool"},
+		equalsTestCase{uint8(0), false, true, "which is not a bool"},
+		equalsTestCase{uint16(0), false, true, "which is not a bool"},
+		equalsTestCase{uint32(0), false, true, "which is not a bool"},
+		equalsTestCase{uint64(0), false, true, "which is not a bool"},
+		equalsTestCase{uintptr(0), false, true, "which is not a bool"},
+		equalsTestCase{[...]int{}, false, true, "which is not a bool"},
+		equalsTestCase{make(chan int), false, true, "which is not a bool"},
+		equalsTestCase{func() {}, false, true, "which is not a bool"},
+		equalsTestCase{map[int]int{}, false, true, "which is not a bool"},
+		equalsTestCase{&someInt, false, true, "which is not a bool"},
+		equalsTestCase{[]int{}, false, true, "which is not a bool"},
+		equalsTestCase{"taco", false, true, "which is not a bool"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not a bool"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) True() {
+	matcher := Equals(true)
+	ExpectEq("true", matcher.Description())
+
+	cases := []equalsTestCase{
+		// bools
+		equalsTestCase{true, true, false, ""},
+		equalsTestCase{bool(true), true, false, ""},
+
+		equalsTestCase{false, false, false, ""},
+		equalsTestCase{bool(false), false, false, ""},
+
+		// Other types.
+		equalsTestCase{int(1), false, true, "which is not a bool"},
+		equalsTestCase{int8(1), false, true, "which is not a bool"},
+		equalsTestCase{int16(1), false, true, "which is not a bool"},
+		equalsTestCase{int32(1), false, true, "which is not a bool"},
+		equalsTestCase{int64(1), false, true, "which is not a bool"},
+		equalsTestCase{uint(1), false, true, "which is not a bool"},
+		equalsTestCase{uint8(1), false, true, "which is not a bool"},
+		equalsTestCase{uint16(1), false, true, "which is not a bool"},
+		equalsTestCase{uint32(1), false, true, "which is not a bool"},
+		equalsTestCase{uint64(1), false, true, "which is not a bool"},
+		equalsTestCase{uintptr(1), false, true, "which is not a bool"},
+		equalsTestCase{[...]int{}, false, true, "which is not a bool"},
+		equalsTestCase{make(chan int), false, true, "which is not a bool"},
+		equalsTestCase{func() {}, false, true, "which is not a bool"},
+		equalsTestCase{map[int]int{}, false, true, "which is not a bool"},
+		equalsTestCase{&someInt, false, true, "which is not a bool"},
+		equalsTestCase{[]int{}, false, true, "which is not a bool"},
+		equalsTestCase{"taco", false, true, "which is not a bool"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not a bool"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// int
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NegativeInt() {
+	// -2^30
+	matcher := Equals(int(-1073741824))
+	ExpectEq("-1073741824", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of -1073741824.
+		equalsTestCase{-1073741824, true, false, ""},
+		equalsTestCase{-1073741824.0, true, false, ""},
+		equalsTestCase{-1073741824 + 0i, true, false, ""},
+		equalsTestCase{int(-1073741824), true, false, ""},
+		equalsTestCase{int32(-1073741824), true, false, ""},
+		equalsTestCase{int64(-1073741824), true, false, ""},
+		equalsTestCase{float32(-1073741824), true, false, ""},
+		equalsTestCase{float64(-1073741824), true, false, ""},
+		equalsTestCase{complex64(-1073741824), true, false, ""},
+		equalsTestCase{complex128(-1073741824), true, false, ""},
+		equalsTestCase{interface{}(int(-1073741824)), true, false, ""},
+
+		// Values that would be -1073741824 in two's complement.
+		equalsTestCase{uint((1 << 32) - 1073741824), false, false, ""},
+		equalsTestCase{uint32((1 << 32) - 1073741824), false, false, ""},
+		equalsTestCase{uint64((1 << 64) - 1073741824), false, false, ""},
+		equalsTestCase{uintptr((1 << 64) - 1073741824), false, false, ""},
+
+		// Non-equal values of signed integer type.
+		equalsTestCase{int(-1073741823), false, false, ""},
+		equalsTestCase{int32(-1073741823), false, false, ""},
+		equalsTestCase{int64(-1073741823), false, false, ""},
+
+		// Non-equal values of other numeric types.
+		equalsTestCase{float64(-1073741824.1), false, false, ""},
+		equalsTestCase{float64(-1073741823.9), false, false, ""},
+		equalsTestCase{complex128(-1073741823), false, false, ""},
+		equalsTestCase{complex128(-1073741824 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveInt() {
+	// 2^30
+	matcher := Equals(int(1073741824))
+	ExpectEq("1073741824", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 1073741824.
+		equalsTestCase{1073741824, true, false, ""},
+		equalsTestCase{1073741824.0, true, false, ""},
+		equalsTestCase{1073741824 + 0i, true, false, ""},
+		equalsTestCase{int(1073741824), true, false, ""},
+		equalsTestCase{uint(1073741824), true, false, ""},
+		equalsTestCase{int32(1073741824), true, false, ""},
+		equalsTestCase{int64(1073741824), true, false, ""},
+		equalsTestCase{uint32(1073741824), true, false, ""},
+		equalsTestCase{uint64(1073741824), true, false, ""},
+		equalsTestCase{uintptr(1073741824), true, false, ""},
+		equalsTestCase{float32(1073741824), true, false, ""},
+		equalsTestCase{float64(1073741824), true, false, ""},
+		equalsTestCase{complex64(1073741824), true, false, ""},
+		equalsTestCase{complex128(1073741824), true, false, ""},
+		equalsTestCase{interface{}(int(1073741824)), true, false, ""},
+		equalsTestCase{interface{}(uint(1073741824)), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(1073741823), false, false, ""},
+		equalsTestCase{int32(1073741823), false, false, ""},
+		equalsTestCase{int64(1073741823), false, false, ""},
+		equalsTestCase{float64(1073741824.1), false, false, ""},
+		equalsTestCase{float64(1073741823.9), false, false, ""},
+		equalsTestCase{complex128(1073741823), false, false, ""},
+		equalsTestCase{complex128(1073741824 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// int8
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NegativeInt8() {
+	matcher := Equals(int8(-17))
+	ExpectEq("-17", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of -17.
+		equalsTestCase{-17, true, false, ""},
+		equalsTestCase{-17.0, true, false, ""},
+		equalsTestCase{-17 + 0i, true, false, ""},
+		equalsTestCase{int(-17), true, false, ""},
+		equalsTestCase{int8(-17), true, false, ""},
+		equalsTestCase{int16(-17), true, false, ""},
+		equalsTestCase{int32(-17), true, false, ""},
+		equalsTestCase{int64(-17), true, false, ""},
+		equalsTestCase{float32(-17), true, false, ""},
+		equalsTestCase{float64(-17), true, false, ""},
+		equalsTestCase{complex64(-17), true, false, ""},
+		equalsTestCase{complex128(-17), true, false, ""},
+		equalsTestCase{interface{}(int(-17)), true, false, ""},
+
+		// Values that would be -17 in two's complement.
+		equalsTestCase{uint((1 << 32) - 17), false, false, ""},
+		equalsTestCase{uint8((1 << 8) - 17), false, false, ""},
+		equalsTestCase{uint16((1 << 16) - 17), false, false, ""},
+		equalsTestCase{uint32((1 << 32) - 17), false, false, ""},
+		equalsTestCase{uint64((1 << 64) - 17), false, false, ""},
+		equalsTestCase{uintptr((1 << 64) - 17), false, false, ""},
+
+		// Non-equal values of signed integer type.
+		equalsTestCase{int(-16), false, false, ""},
+		equalsTestCase{int8(-16), false, false, ""},
+		equalsTestCase{int16(-16), false, false, ""},
+		equalsTestCase{int32(-16), false, false, ""},
+		equalsTestCase{int64(-16), false, false, ""},
+
+		// Non-equal values of other numeric types.
+		equalsTestCase{float32(-17.1), false, false, ""},
+		equalsTestCase{float32(-16.9), false, false, ""},
+		equalsTestCase{complex64(-16), false, false, ""},
+		equalsTestCase{complex64(-17 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{-17}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{-17}, false, true, "which is not numeric"},
+		equalsTestCase{"-17", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) ZeroInt8() {
+	matcher := Equals(int8(0))
+	ExpectEq("0", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 0.
+		equalsTestCase{0, true, false, ""},
+		equalsTestCase{0.0, true, false, ""},
+		equalsTestCase{0 + 0i, true, false, ""},
+		equalsTestCase{int(0), true, false, ""},
+		equalsTestCase{int8(0), true, false, ""},
+		equalsTestCase{int16(0), true, false, ""},
+		equalsTestCase{int32(0), true, false, ""},
+		equalsTestCase{int64(0), true, false, ""},
+		equalsTestCase{float32(0), true, false, ""},
+		equalsTestCase{float64(0), true, false, ""},
+		equalsTestCase{complex64(0), true, false, ""},
+		equalsTestCase{complex128(0), true, false, ""},
+		equalsTestCase{interface{}(int(0)), true, false, ""},
+		equalsTestCase{uint(0), true, false, ""},
+		equalsTestCase{uint8(0), true, false, ""},
+		equalsTestCase{uint16(0), true, false, ""},
+		equalsTestCase{uint32(0), true, false, ""},
+		equalsTestCase{uint64(0), true, false, ""},
+		equalsTestCase{uintptr(0), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(1), false, false, ""},
+		equalsTestCase{int8(1), false, false, ""},
+		equalsTestCase{int16(1), false, false, ""},
+		equalsTestCase{int32(1), false, false, ""},
+		equalsTestCase{int64(1), false, false, ""},
+		equalsTestCase{float32(-0.1), false, false, ""},
+		equalsTestCase{float32(0.1), false, false, ""},
+		equalsTestCase{complex64(1), false, false, ""},
+		equalsTestCase{complex64(0 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{0}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{0}, false, true, "which is not numeric"},
+		equalsTestCase{"0", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveInt8() {
+	matcher := Equals(int8(17))
+	ExpectEq("17", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 17.
+		equalsTestCase{17, true, false, ""},
+		equalsTestCase{17.0, true, false, ""},
+		equalsTestCase{17 + 0i, true, false, ""},
+		equalsTestCase{int(17), true, false, ""},
+		equalsTestCase{int8(17), true, false, ""},
+		equalsTestCase{int16(17), true, false, ""},
+		equalsTestCase{int32(17), true, false, ""},
+		equalsTestCase{int64(17), true, false, ""},
+		equalsTestCase{float32(17), true, false, ""},
+		equalsTestCase{float64(17), true, false, ""},
+		equalsTestCase{complex64(17), true, false, ""},
+		equalsTestCase{complex128(17), true, false, ""},
+		equalsTestCase{interface{}(int(17)), true, false, ""},
+		equalsTestCase{uint(17), true, false, ""},
+		equalsTestCase{uint8(17), true, false, ""},
+		equalsTestCase{uint16(17), true, false, ""},
+		equalsTestCase{uint32(17), true, false, ""},
+		equalsTestCase{uint64(17), true, false, ""},
+		equalsTestCase{uintptr(17), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(16), false, false, ""},
+		equalsTestCase{int8(16), false, false, ""},
+		equalsTestCase{int16(16), false, false, ""},
+		equalsTestCase{int32(16), false, false, ""},
+		equalsTestCase{int64(16), false, false, ""},
+		equalsTestCase{float32(16.9), false, false, ""},
+		equalsTestCase{float32(17.1), false, false, ""},
+		equalsTestCase{complex64(16), false, false, ""},
+		equalsTestCase{complex64(17 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{17}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{17}, false, true, "which is not numeric"},
+		equalsTestCase{"17", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// int16
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NegativeInt16() {
+	matcher := Equals(int16(-32766))
+	ExpectEq("-32766", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of -32766.
+		equalsTestCase{-32766, true, false, ""},
+		equalsTestCase{-32766.0, true, false, ""},
+		equalsTestCase{-32766 + 0i, true, false, ""},
+		equalsTestCase{int(-32766), true, false, ""},
+		equalsTestCase{int16(-32766), true, false, ""},
+		equalsTestCase{int32(-32766), true, false, ""},
+		equalsTestCase{int64(-32766), true, false, ""},
+		equalsTestCase{float32(-32766), true, false, ""},
+		equalsTestCase{float64(-32766), true, false, ""},
+		equalsTestCase{complex64(-32766), true, false, ""},
+		equalsTestCase{complex128(-32766), true, false, ""},
+		equalsTestCase{interface{}(int(-32766)), true, false, ""},
+
+		// Values that would be -32766 in two's complement.
+		equalsTestCase{uint((1 << 32) - 32766), false, false, ""},
+		equalsTestCase{uint16((1 << 16) - 32766), false, false, ""},
+		equalsTestCase{uint32((1 << 32) - 32766), false, false, ""},
+		equalsTestCase{uint64((1 << 64) - 32766), false, false, ""},
+		equalsTestCase{uintptr((1 << 64) - 32766), false, false, ""},
+
+		// Non-equal values of signed integer type.
+		equalsTestCase{int(-16), false, false, ""},
+		equalsTestCase{int8(-16), false, false, ""},
+		equalsTestCase{int16(-16), false, false, ""},
+		equalsTestCase{int32(-16), false, false, ""},
+		equalsTestCase{int64(-16), false, false, ""},
+
+		// Non-equal values of other numeric types.
+		equalsTestCase{float32(-32766.1), false, false, ""},
+		equalsTestCase{float32(-32765.9), false, false, ""},
+		equalsTestCase{complex64(-32766.1), false, false, ""},
+		equalsTestCase{complex64(-32766 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{-32766}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{-32766}, false, true, "which is not numeric"},
+		equalsTestCase{"-32766", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) ZeroInt16() {
+	matcher := Equals(int16(0))
+	ExpectEq("0", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 0.
+		equalsTestCase{0, true, false, ""},
+		equalsTestCase{0.0, true, false, ""},
+		equalsTestCase{0 + 0i, true, false, ""},
+		equalsTestCase{int(0), true, false, ""},
+		equalsTestCase{int8(0), true, false, ""},
+		equalsTestCase{int16(0), true, false, ""},
+		equalsTestCase{int32(0), true, false, ""},
+		equalsTestCase{int64(0), true, false, ""},
+		equalsTestCase{float32(0), true, false, ""},
+		equalsTestCase{float64(0), true, false, ""},
+		equalsTestCase{complex64(0), true, false, ""},
+		equalsTestCase{complex128(0), true, false, ""},
+		equalsTestCase{interface{}(int(0)), true, false, ""},
+		equalsTestCase{uint(0), true, false, ""},
+		equalsTestCase{uint8(0), true, false, ""},
+		equalsTestCase{uint16(0), true, false, ""},
+		equalsTestCase{uint32(0), true, false, ""},
+		equalsTestCase{uint64(0), true, false, ""},
+		equalsTestCase{uintptr(0), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(1), false, false, ""},
+		equalsTestCase{int8(1), false, false, ""},
+		equalsTestCase{int16(1), false, false, ""},
+		equalsTestCase{int32(1), false, false, ""},
+		equalsTestCase{int64(1), false, false, ""},
+		equalsTestCase{float32(-0.1), false, false, ""},
+		equalsTestCase{float32(0.1), false, false, ""},
+		equalsTestCase{complex64(1), false, false, ""},
+		equalsTestCase{complex64(0 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{0}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{0}, false, true, "which is not numeric"},
+		equalsTestCase{"0", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveInt16() {
+	matcher := Equals(int16(32765))
+	ExpectEq("32765", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 32765.
+		equalsTestCase{32765, true, false, ""},
+		equalsTestCase{32765.0, true, false, ""},
+		equalsTestCase{32765 + 0i, true, false, ""},
+		equalsTestCase{int(32765), true, false, ""},
+		equalsTestCase{int16(32765), true, false, ""},
+		equalsTestCase{int32(32765), true, false, ""},
+		equalsTestCase{int64(32765), true, false, ""},
+		equalsTestCase{float32(32765), true, false, ""},
+		equalsTestCase{float64(32765), true, false, ""},
+		equalsTestCase{complex64(32765), true, false, ""},
+		equalsTestCase{complex128(32765), true, false, ""},
+		equalsTestCase{interface{}(int(32765)), true, false, ""},
+		equalsTestCase{uint(32765), true, false, ""},
+		equalsTestCase{uint16(32765), true, false, ""},
+		equalsTestCase{uint32(32765), true, false, ""},
+		equalsTestCase{uint64(32765), true, false, ""},
+		equalsTestCase{uintptr(32765), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(32764), false, false, ""},
+		equalsTestCase{int16(32764), false, false, ""},
+		equalsTestCase{int32(32764), false, false, ""},
+		equalsTestCase{int64(32764), false, false, ""},
+		equalsTestCase{float32(32764.9), false, false, ""},
+		equalsTestCase{float32(32765.1), false, false, ""},
+		equalsTestCase{complex64(32765.9), false, false, ""},
+		equalsTestCase{complex64(32765 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{32765}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{32765}, false, true, "which is not numeric"},
+		equalsTestCase{"32765", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// int32
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NegativeInt32() {
+	// -2^30
+	matcher := Equals(int32(-1073741824))
+	ExpectEq("-1073741824", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of -1073741824.
+		equalsTestCase{-1073741824, true, false, ""},
+		equalsTestCase{-1073741824.0, true, false, ""},
+		equalsTestCase{-1073741824 + 0i, true, false, ""},
+		equalsTestCase{int(-1073741824), true, false, ""},
+		equalsTestCase{int32(-1073741824), true, false, ""},
+		equalsTestCase{int64(-1073741824), true, false, ""},
+		equalsTestCase{float32(-1073741824), true, false, ""},
+		equalsTestCase{float64(-1073741824), true, false, ""},
+		equalsTestCase{complex64(-1073741824), true, false, ""},
+		equalsTestCase{complex128(-1073741824), true, false, ""},
+		equalsTestCase{interface{}(int(-1073741824)), true, false, ""},
+
+		// Values that would be -1073741824 in two's complement.
+		equalsTestCase{uint((1 << 32) - 1073741824), false, false, ""},
+		equalsTestCase{uint32((1 << 32) - 1073741824), false, false, ""},
+		equalsTestCase{uint64((1 << 64) - 1073741824), false, false, ""},
+		equalsTestCase{uintptr((1 << 64) - 1073741824), false, false, ""},
+
+		// Non-equal values of signed integer type.
+		equalsTestCase{int(-1073741823), false, false, ""},
+		equalsTestCase{int32(-1073741823), false, false, ""},
+		equalsTestCase{int64(-1073741823), false, false, ""},
+
+		// Non-equal values of other numeric types.
+		equalsTestCase{float64(-1073741824.1), false, false, ""},
+		equalsTestCase{float64(-1073741823.9), false, false, ""},
+		equalsTestCase{complex128(-1073741823), false, false, ""},
+		equalsTestCase{complex128(-1073741824 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveInt32() {
+	// 2^30
+	matcher := Equals(int32(1073741824))
+	ExpectEq("1073741824", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 1073741824.
+		equalsTestCase{1073741824, true, false, ""},
+		equalsTestCase{1073741824.0, true, false, ""},
+		equalsTestCase{1073741824 + 0i, true, false, ""},
+		equalsTestCase{int(1073741824), true, false, ""},
+		equalsTestCase{uint(1073741824), true, false, ""},
+		equalsTestCase{int32(1073741824), true, false, ""},
+		equalsTestCase{int64(1073741824), true, false, ""},
+		equalsTestCase{uint32(1073741824), true, false, ""},
+		equalsTestCase{uint64(1073741824), true, false, ""},
+		equalsTestCase{uintptr(1073741824), true, false, ""},
+		equalsTestCase{float32(1073741824), true, false, ""},
+		equalsTestCase{float64(1073741824), true, false, ""},
+		equalsTestCase{complex64(1073741824), true, false, ""},
+		equalsTestCase{complex128(1073741824), true, false, ""},
+		equalsTestCase{interface{}(int(1073741824)), true, false, ""},
+		equalsTestCase{interface{}(uint(1073741824)), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(1073741823), false, false, ""},
+		equalsTestCase{int32(1073741823), false, false, ""},
+		equalsTestCase{int64(1073741823), false, false, ""},
+		equalsTestCase{float64(1073741824.1), false, false, ""},
+		equalsTestCase{float64(1073741823.9), false, false, ""},
+		equalsTestCase{complex128(1073741823), false, false, ""},
+		equalsTestCase{complex128(1073741824 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// int64
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NegativeInt64() {
+	// -2^40
+	matcher := Equals(int64(-1099511627776))
+	ExpectEq("-1099511627776", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of -1099511627776.
+		equalsTestCase{-1099511627776.0, true, false, ""},
+		equalsTestCase{-1099511627776 + 0i, true, false, ""},
+		equalsTestCase{int64(-1099511627776), true, false, ""},
+		equalsTestCase{float32(-1099511627776), true, false, ""},
+		equalsTestCase{float64(-1099511627776), true, false, ""},
+		equalsTestCase{complex64(-1099511627776), true, false, ""},
+		equalsTestCase{complex128(-1099511627776), true, false, ""},
+		equalsTestCase{interface{}(int64(-1099511627776)), true, false, ""},
+
+		// Values that would be -1099511627776 in two's complement.
+		equalsTestCase{uint64((1 << 64) - 1099511627776), false, false, ""},
+
+		// Non-equal values of signed integer type.
+		equalsTestCase{int64(-1099511627775), false, false, ""},
+
+		// Non-equal values of other numeric types.
+		equalsTestCase{float64(-1099511627776.1), false, false, ""},
+		equalsTestCase{float64(-1099511627775.9), false, false, ""},
+		equalsTestCase{complex128(-1099511627775), false, false, ""},
+		equalsTestCase{complex128(-1099511627776 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveInt64() {
+	// 2^40
+	matcher := Equals(int64(1099511627776))
+	ExpectEq("1099511627776", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 1099511627776.
+		equalsTestCase{1099511627776.0, true, false, ""},
+		equalsTestCase{1099511627776 + 0i, true, false, ""},
+		equalsTestCase{int64(1099511627776), true, false, ""},
+		equalsTestCase{uint64(1099511627776), true, false, ""},
+		equalsTestCase{uintptr(1099511627776), true, false, ""},
+		equalsTestCase{float32(1099511627776), true, false, ""},
+		equalsTestCase{float64(1099511627776), true, false, ""},
+		equalsTestCase{complex64(1099511627776), true, false, ""},
+		equalsTestCase{complex128(1099511627776), true, false, ""},
+		equalsTestCase{interface{}(int64(1099511627776)), true, false, ""},
+		equalsTestCase{interface{}(uint64(1099511627776)), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(1099511627775), false, false, ""},
+		equalsTestCase{uint64(1099511627775), false, false, ""},
+		equalsTestCase{float64(1099511627776.1), false, false, ""},
+		equalsTestCase{float64(1099511627775.9), false, false, ""},
+		equalsTestCase{complex128(1099511627775), false, false, ""},
+		equalsTestCase{complex128(1099511627776 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) Int64NotExactlyRepresentableBySinglePrecision() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := Equals(int64(kTwoTo25 + 1))
+	ExpectEq("33554433", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Integers.
+		equalsTestCase{int64(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 2), false, false, ""},
+
+		equalsTestCase{uint64(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 2), false, false, ""},
+
+		// Single-precision floating point.
+		equalsTestCase{float32(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{float32(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 3), false, false, ""},
+
+		equalsTestCase{complex64(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{complex64(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 3), false, false, ""},
+
+		// Double-precision floating point.
+		equalsTestCase{float64(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 2), false, false, ""},
+
+		equalsTestCase{complex128(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 2), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) Int64NotExactlyRepresentableByDoublePrecision() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := Equals(int64(kTwoTo54 + 1))
+	ExpectEq("18014398509481985", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Integers.
+		equalsTestCase{int64(kTwoTo54 + 0), false, false, ""},
+		equalsTestCase{int64(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo54 + 2), false, false, ""},
+
+		equalsTestCase{uint64(kTwoTo54 + 0), false, false, ""},
+		equalsTestCase{uint64(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo54 + 2), false, false, ""},
+
+		// Double-precision floating point.
+		equalsTestCase{float64(kTwoTo54 - 2), false, false, ""},
+		equalsTestCase{float64(kTwoTo54 - 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 0), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 2), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 3), false, false, ""},
+
+		equalsTestCase{complex128(kTwoTo54 - 2), false, false, ""},
+		equalsTestCase{complex128(kTwoTo54 - 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 0), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 2), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// uint
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) SmallUint() {
+	const kExpected = 17
+	matcher := Equals(uint(kExpected))
+	ExpectEq("17", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{17, true, false, ""},
+		equalsTestCase{17.0, true, false, ""},
+		equalsTestCase{17 + 0i, true, false, ""},
+		equalsTestCase{int(kExpected), true, false, ""},
+		equalsTestCase{int8(kExpected), true, false, ""},
+		equalsTestCase{int16(kExpected), true, false, ""},
+		equalsTestCase{int32(kExpected), true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint(kExpected), true, false, ""},
+		equalsTestCase{uint8(kExpected), true, false, ""},
+		equalsTestCase{uint16(kExpected), true, false, ""},
+		equalsTestCase{uint32(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{uintptr(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric types.
+		equalsTestCase{kExpected + 1, false, false, ""},
+		equalsTestCase{int(kExpected + 1), false, false, ""},
+		equalsTestCase{int8(kExpected + 1), false, false, ""},
+		equalsTestCase{int16(kExpected + 1), false, false, ""},
+		equalsTestCase{int32(kExpected + 1), false, false, ""},
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint(kExpected + 1), false, false, ""},
+		equalsTestCase{uint8(kExpected + 1), false, false, ""},
+		equalsTestCase{uint16(kExpected + 1), false, false, ""},
+		equalsTestCase{uint32(kExpected + 1), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{uintptr(kExpected + 1), false, false, ""},
+		equalsTestCase{float32(kExpected + 1), false, false, ""},
+		equalsTestCase{float64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex64(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected + 1), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) LargeUint() {
+	const kExpected = (1 << 16) + 17
+	matcher := Equals(uint(kExpected))
+	ExpectEq("65553", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{65553, true, false, ""},
+		equalsTestCase{65553.0, true, false, ""},
+		equalsTestCase{65553 + 0i, true, false, ""},
+		equalsTestCase{int32(kExpected), true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint32(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric types.
+		equalsTestCase{int16(17), false, false, ""},
+		equalsTestCase{int32(kExpected + 1), false, false, ""},
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint16(17), false, false, ""},
+		equalsTestCase{uint32(kExpected + 1), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{float64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected + 1), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) UintNotExactlyRepresentableBySinglePrecision() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := Equals(uint(kTwoTo25 + 1))
+	ExpectEq("33554433", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Integers.
+		equalsTestCase{int64(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 2), false, false, ""},
+
+		equalsTestCase{uint64(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 2), false, false, ""},
+
+		// Single-precision floating point.
+		equalsTestCase{float32(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{float32(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 3), false, false, ""},
+
+		equalsTestCase{complex64(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{complex64(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 3), false, false, ""},
+
+		// Double-precision floating point.
+		equalsTestCase{float64(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 2), false, false, ""},
+
+		equalsTestCase{complex128(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 2), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// uint8
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) SmallUint8() {
+	const kExpected = 17
+	matcher := Equals(uint8(kExpected))
+	ExpectEq("17", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{17, true, false, ""},
+		equalsTestCase{17.0, true, false, ""},
+		equalsTestCase{17 + 0i, true, false, ""},
+		equalsTestCase{int(kExpected), true, false, ""},
+		equalsTestCase{int8(kExpected), true, false, ""},
+		equalsTestCase{int16(kExpected), true, false, ""},
+		equalsTestCase{int32(kExpected), true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint(kExpected), true, false, ""},
+		equalsTestCase{uint8(kExpected), true, false, ""},
+		equalsTestCase{uint16(kExpected), true, false, ""},
+		equalsTestCase{uint32(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{uintptr(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric types.
+		equalsTestCase{kExpected + 1, false, false, ""},
+		equalsTestCase{int(kExpected + 1), false, false, ""},
+		equalsTestCase{int8(kExpected + 1), false, false, ""},
+		equalsTestCase{int16(kExpected + 1), false, false, ""},
+		equalsTestCase{int32(kExpected + 1), false, false, ""},
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint(kExpected + 1), false, false, ""},
+		equalsTestCase{uint8(kExpected + 1), false, false, ""},
+		equalsTestCase{uint16(kExpected + 1), false, false, ""},
+		equalsTestCase{uint32(kExpected + 1), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{uintptr(kExpected + 1), false, false, ""},
+		equalsTestCase{float32(kExpected + 1), false, false, ""},
+		equalsTestCase{float64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex64(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected + 1), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// uint16
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) SmallUint16() {
+	const kExpected = 17
+	matcher := Equals(uint16(kExpected))
+	ExpectEq("17", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{17, true, false, ""},
+		equalsTestCase{17.0, true, false, ""},
+		equalsTestCase{17 + 0i, true, false, ""},
+		equalsTestCase{int(kExpected), true, false, ""},
+		equalsTestCase{int8(kExpected), true, false, ""},
+		equalsTestCase{int16(kExpected), true, false, ""},
+		equalsTestCase{int32(kExpected), true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint(kExpected), true, false, ""},
+		equalsTestCase{uint8(kExpected), true, false, ""},
+		equalsTestCase{uint16(kExpected), true, false, ""},
+		equalsTestCase{uint32(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{uintptr(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric types.
+		equalsTestCase{kExpected + 1, false, false, ""},
+		equalsTestCase{int(kExpected + 1), false, false, ""},
+		equalsTestCase{int8(kExpected + 1), false, false, ""},
+		equalsTestCase{int16(kExpected + 1), false, false, ""},
+		equalsTestCase{int32(kExpected + 1), false, false, ""},
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint(kExpected + 1), false, false, ""},
+		equalsTestCase{uint8(kExpected + 1), false, false, ""},
+		equalsTestCase{uint16(kExpected + 1), false, false, ""},
+		equalsTestCase{uint32(kExpected + 1), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{uintptr(kExpected + 1), false, false, ""},
+		equalsTestCase{float32(kExpected + 1), false, false, ""},
+		equalsTestCase{float64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex64(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected + 1), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) LargeUint16() {
+	const kExpected = (1 << 8) + 17
+	matcher := Equals(uint16(kExpected))
+	ExpectEq("273", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{273, true, false, ""},
+		equalsTestCase{273.0, true, false, ""},
+		equalsTestCase{273 + 0i, true, false, ""},
+		equalsTestCase{int16(kExpected), true, false, ""},
+		equalsTestCase{int32(kExpected), true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint16(kExpected), true, false, ""},
+		equalsTestCase{uint32(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric types.
+		equalsTestCase{int8(17), false, false, ""},
+		equalsTestCase{int16(kExpected + 1), false, false, ""},
+		equalsTestCase{int32(kExpected + 1), false, false, ""},
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint8(17), false, false, ""},
+		equalsTestCase{uint16(kExpected + 1), false, false, ""},
+		equalsTestCase{uint32(kExpected + 1), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{float64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected + 1), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// uint32
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) SmallUint32() {
+	const kExpected = 17
+	matcher := Equals(uint32(kExpected))
+	ExpectEq("17", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{17, true, false, ""},
+		equalsTestCase{17.0, true, false, ""},
+		equalsTestCase{17 + 0i, true, false, ""},
+		equalsTestCase{int(kExpected), true, false, ""},
+		equalsTestCase{int8(kExpected), true, false, ""},
+		equalsTestCase{int16(kExpected), true, false, ""},
+		equalsTestCase{int32(kExpected), true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint(kExpected), true, false, ""},
+		equalsTestCase{uint8(kExpected), true, false, ""},
+		equalsTestCase{uint16(kExpected), true, false, ""},
+		equalsTestCase{uint32(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{uintptr(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric types.
+		equalsTestCase{kExpected + 1, false, false, ""},
+		equalsTestCase{int(kExpected + 1), false, false, ""},
+		equalsTestCase{int8(kExpected + 1), false, false, ""},
+		equalsTestCase{int16(kExpected + 1), false, false, ""},
+		equalsTestCase{int32(kExpected + 1), false, false, ""},
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint(kExpected + 1), false, false, ""},
+		equalsTestCase{uint8(kExpected + 1), false, false, ""},
+		equalsTestCase{uint16(kExpected + 1), false, false, ""},
+		equalsTestCase{uint32(kExpected + 1), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{uintptr(kExpected + 1), false, false, ""},
+		equalsTestCase{float32(kExpected + 1), false, false, ""},
+		equalsTestCase{float64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex64(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected + 1), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) LargeUint32() {
+	const kExpected = (1 << 16) + 17
+	matcher := Equals(uint32(kExpected))
+	ExpectEq("65553", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{65553, true, false, ""},
+		equalsTestCase{65553.0, true, false, ""},
+		equalsTestCase{65553 + 0i, true, false, ""},
+		equalsTestCase{int32(kExpected), true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint32(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric types.
+		equalsTestCase{int16(17), false, false, ""},
+		equalsTestCase{int32(kExpected + 1), false, false, ""},
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint16(17), false, false, ""},
+		equalsTestCase{uint32(kExpected + 1), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{float64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected + 1), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) Uint32NotExactlyRepresentableBySinglePrecision() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := Equals(uint32(kTwoTo25 + 1))
+	ExpectEq("33554433", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Integers.
+		equalsTestCase{int64(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 2), false, false, ""},
+
+		equalsTestCase{uint64(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 2), false, false, ""},
+
+		// Single-precision floating point.
+		equalsTestCase{float32(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{float32(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 3), false, false, ""},
+
+		equalsTestCase{complex64(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{complex64(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 3), false, false, ""},
+
+		// Double-precision floating point.
+		equalsTestCase{float64(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 2), false, false, ""},
+
+		equalsTestCase{complex128(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 2), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// uint64
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) SmallUint64() {
+	const kExpected = 17
+	matcher := Equals(uint64(kExpected))
+	ExpectEq("17", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{17, true, false, ""},
+		equalsTestCase{17.0, true, false, ""},
+		equalsTestCase{17 + 0i, true, false, ""},
+		equalsTestCase{int(kExpected), true, false, ""},
+		equalsTestCase{int8(kExpected), true, false, ""},
+		equalsTestCase{int16(kExpected), true, false, ""},
+		equalsTestCase{int32(kExpected), true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint(kExpected), true, false, ""},
+		equalsTestCase{uint8(kExpected), true, false, ""},
+		equalsTestCase{uint16(kExpected), true, false, ""},
+		equalsTestCase{uint32(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{uintptr(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric types.
+		equalsTestCase{kExpected + 1, false, false, ""},
+		equalsTestCase{int(kExpected + 1), false, false, ""},
+		equalsTestCase{int8(kExpected + 1), false, false, ""},
+		equalsTestCase{int16(kExpected + 1), false, false, ""},
+		equalsTestCase{int32(kExpected + 1), false, false, ""},
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint(kExpected + 1), false, false, ""},
+		equalsTestCase{uint8(kExpected + 1), false, false, ""},
+		equalsTestCase{uint16(kExpected + 1), false, false, ""},
+		equalsTestCase{uint32(kExpected + 1), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{uintptr(kExpected + 1), false, false, ""},
+		equalsTestCase{float32(kExpected + 1), false, false, ""},
+		equalsTestCase{float64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex64(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected + 1), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) LargeUint64() {
+	const kExpected = (1 << 32) + 17
+	matcher := Equals(uint64(kExpected))
+	ExpectEq("4294967313", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{4294967313.0, true, false, ""},
+		equalsTestCase{4294967313 + 0i, true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric types.
+		equalsTestCase{int(17), false, false, ""},
+		equalsTestCase{int32(17), false, false, ""},
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint(17), false, false, ""},
+		equalsTestCase{uint32(17), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{float64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected + 1), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) Uint64NotExactlyRepresentableBySinglePrecision() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := Equals(uint64(kTwoTo25 + 1))
+	ExpectEq("33554433", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Integers.
+		equalsTestCase{int64(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 2), false, false, ""},
+
+		equalsTestCase{uint64(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 2), false, false, ""},
+
+		// Single-precision floating point.
+		equalsTestCase{float32(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{float32(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 3), false, false, ""},
+
+		equalsTestCase{complex64(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{complex64(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 3), false, false, ""},
+
+		// Double-precision floating point.
+		equalsTestCase{float64(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 2), false, false, ""},
+
+		equalsTestCase{complex128(kTwoTo25 + 0), false, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 2), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) Uint64NotExactlyRepresentableByDoublePrecision() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := Equals(uint64(kTwoTo54 + 1))
+	ExpectEq("18014398509481985", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Integers.
+		equalsTestCase{int64(kTwoTo54 + 0), false, false, ""},
+		equalsTestCase{int64(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo54 + 2), false, false, ""},
+
+		equalsTestCase{uint64(kTwoTo54 + 0), false, false, ""},
+		equalsTestCase{uint64(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo54 + 2), false, false, ""},
+
+		// Double-precision floating point.
+		equalsTestCase{float64(kTwoTo54 - 2), false, false, ""},
+		equalsTestCase{float64(kTwoTo54 - 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 0), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 2), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 3), false, false, ""},
+
+		equalsTestCase{complex128(kTwoTo54 - 2), false, false, ""},
+		equalsTestCase{complex128(kTwoTo54 - 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 0), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 2), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// uintptr
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) SmallUintptr() {
+	const kExpected = 17
+	matcher := Equals(uintptr(kExpected))
+	ExpectEq("17", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{17, true, false, ""},
+		equalsTestCase{17.0, true, false, ""},
+		equalsTestCase{17 + 0i, true, false, ""},
+		equalsTestCase{int(kExpected), true, false, ""},
+		equalsTestCase{int8(kExpected), true, false, ""},
+		equalsTestCase{int16(kExpected), true, false, ""},
+		equalsTestCase{int32(kExpected), true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint(kExpected), true, false, ""},
+		equalsTestCase{uint8(kExpected), true, false, ""},
+		equalsTestCase{uint16(kExpected), true, false, ""},
+		equalsTestCase{uint32(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{uintptr(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric types.
+		equalsTestCase{kExpected + 1, false, false, ""},
+		equalsTestCase{int(kExpected + 1), false, false, ""},
+		equalsTestCase{int8(kExpected + 1), false, false, ""},
+		equalsTestCase{int16(kExpected + 1), false, false, ""},
+		equalsTestCase{int32(kExpected + 1), false, false, ""},
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint(kExpected + 1), false, false, ""},
+		equalsTestCase{uint8(kExpected + 1), false, false, ""},
+		equalsTestCase{uint16(kExpected + 1), false, false, ""},
+		equalsTestCase{uint32(kExpected + 1), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{uintptr(kExpected + 1), false, false, ""},
+		equalsTestCase{float32(kExpected + 1), false, false, ""},
+		equalsTestCase{float64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex64(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected + 1), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) LargeUintptr() {
+	const kExpected = (1 << 32) + 17
+	matcher := Equals(uintptr(kExpected))
+	ExpectEq("4294967313", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{4294967313.0, true, false, ""},
+		equalsTestCase{4294967313 + 0i, true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{uintptr(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric types.
+		equalsTestCase{int(17), false, false, ""},
+		equalsTestCase{int32(17), false, false, ""},
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint(17), false, false, ""},
+		equalsTestCase{uint32(17), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{uintptr(kExpected + 1), false, false, ""},
+		equalsTestCase{float64(kExpected + 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected + 1), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// float32
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NegativeIntegralFloat32() {
+	matcher := Equals(float32(-32769))
+	ExpectEq("-32769", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of -32769.
+		equalsTestCase{-32769.0, true, false, ""},
+		equalsTestCase{-32769 + 0i, true, false, ""},
+		equalsTestCase{int32(-32769), true, false, ""},
+		equalsTestCase{int64(-32769), true, false, ""},
+		equalsTestCase{float32(-32769), true, false, ""},
+		equalsTestCase{float64(-32769), true, false, ""},
+		equalsTestCase{complex64(-32769), true, false, ""},
+		equalsTestCase{complex128(-32769), true, false, ""},
+		equalsTestCase{interface{}(float32(-32769)), true, false, ""},
+		equalsTestCase{interface{}(int64(-32769)), true, false, ""},
+
+		// Values that would be -32769 in two's complement.
+		equalsTestCase{uint64((1 << 64) - 32769), false, false, ""},
+		equalsTestCase{uintptr((1 << 64) - 32769), false, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(-32770), false, false, ""},
+		equalsTestCase{float32(-32769.1), false, false, ""},
+		equalsTestCase{float32(-32768.9), false, false, ""},
+		equalsTestCase{float64(-32769.1), false, false, ""},
+		equalsTestCase{float64(-32768.9), false, false, ""},
+		equalsTestCase{complex128(-32768), false, false, ""},
+		equalsTestCase{complex128(-32769 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) NegativeNonIntegralFloat32() {
+	matcher := Equals(float32(-32769.1))
+	ExpectEq("-32769.1", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of -32769.1.
+		equalsTestCase{-32769.1, true, false, ""},
+		equalsTestCase{-32769.1 + 0i, true, false, ""},
+		equalsTestCase{float32(-32769.1), true, false, ""},
+		equalsTestCase{float64(-32769.1), true, false, ""},
+		equalsTestCase{complex64(-32769.1), true, false, ""},
+		equalsTestCase{complex128(-32769.1), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int32(-32769), false, false, ""},
+		equalsTestCase{int32(-32770), false, false, ""},
+		equalsTestCase{int64(-32769), false, false, ""},
+		equalsTestCase{int64(-32770), false, false, ""},
+		equalsTestCase{float32(-32769.2), false, false, ""},
+		equalsTestCase{float32(-32769.0), false, false, ""},
+		equalsTestCase{float64(-32769.2), false, false, ""},
+		equalsTestCase{complex128(-32769.1 + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) LargeNegativeFloat32() {
+	const kExpected = -1 * (1 << 65)
+	matcher := Equals(float32(kExpected))
+	ExpectEq("-3.689349e+19", matcher.Description())
+
+	floatExpected := float32(kExpected)
+	castedInt := int64(floatExpected)
+
+	cases := []equalsTestCase{
+		// Equal values of numeric type.
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{castedInt, false, false, ""},
+		equalsTestCase{int64(0), false, false, ""},
+		equalsTestCase{int64(math.MinInt64), false, false, ""},
+		equalsTestCase{int64(math.MaxInt64), false, false, ""},
+		equalsTestCase{float32(kExpected / 2), false, false, ""},
+		equalsTestCase{float64(kExpected / 2), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) ZeroFloat32() {
+	matcher := Equals(float32(0))
+	ExpectEq("0", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of zero.
+		equalsTestCase{0.0, true, false, ""},
+		equalsTestCase{0 + 0i, true, false, ""},
+		equalsTestCase{int(0), true, false, ""},
+		equalsTestCase{int8(0), true, false, ""},
+		equalsTestCase{int16(0), true, false, ""},
+		equalsTestCase{int32(0), true, false, ""},
+		equalsTestCase{int64(0), true, false, ""},
+		equalsTestCase{uint(0), true, false, ""},
+		equalsTestCase{uint8(0), true, false, ""},
+		equalsTestCase{uint16(0), true, false, ""},
+		equalsTestCase{uint32(0), true, false, ""},
+		equalsTestCase{uint64(0), true, false, ""},
+		equalsTestCase{uintptr(0), true, false, ""},
+		equalsTestCase{float32(0), true, false, ""},
+		equalsTestCase{float64(0), true, false, ""},
+		equalsTestCase{complex64(0), true, false, ""},
+		equalsTestCase{complex128(0), true, false, ""},
+		equalsTestCase{interface{}(float32(0)), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(1), false, false, ""},
+		equalsTestCase{int64(-1), false, false, ""},
+		equalsTestCase{float32(1), false, false, ""},
+		equalsTestCase{float32(-1), false, false, ""},
+		equalsTestCase{complex128(0 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveIntegralFloat32() {
+	matcher := Equals(float32(32769))
+	ExpectEq("32769", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 32769.
+		equalsTestCase{32769.0, true, false, ""},
+		equalsTestCase{32769 + 0i, true, false, ""},
+		equalsTestCase{int(32769), true, false, ""},
+		equalsTestCase{int32(32769), true, false, ""},
+		equalsTestCase{int64(32769), true, false, ""},
+		equalsTestCase{uint(32769), true, false, ""},
+		equalsTestCase{uint32(32769), true, false, ""},
+		equalsTestCase{uint64(32769), true, false, ""},
+		equalsTestCase{uintptr(32769), true, false, ""},
+		equalsTestCase{float32(32769), true, false, ""},
+		equalsTestCase{float64(32769), true, false, ""},
+		equalsTestCase{complex64(32769), true, false, ""},
+		equalsTestCase{complex128(32769), true, false, ""},
+		equalsTestCase{interface{}(float32(32769)), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(32770), false, false, ""},
+		equalsTestCase{uint64(32770), false, false, ""},
+		equalsTestCase{float32(32769.1), false, false, ""},
+		equalsTestCase{float32(32768.9), false, false, ""},
+		equalsTestCase{float64(32769.1), false, false, ""},
+		equalsTestCase{float64(32768.9), false, false, ""},
+		equalsTestCase{complex128(32768), false, false, ""},
+		equalsTestCase{complex128(32769 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveNonIntegralFloat32() {
+	matcher := Equals(float32(32769.1))
+	ExpectEq("32769.1", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 32769.1.
+		equalsTestCase{32769.1, true, false, ""},
+		equalsTestCase{32769.1 + 0i, true, false, ""},
+		equalsTestCase{float32(32769.1), true, false, ""},
+		equalsTestCase{float64(32769.1), true, false, ""},
+		equalsTestCase{complex64(32769.1), true, false, ""},
+		equalsTestCase{complex128(32769.1), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int32(32769), false, false, ""},
+		equalsTestCase{int32(32770), false, false, ""},
+		equalsTestCase{uint64(32769), false, false, ""},
+		equalsTestCase{uint64(32770), false, false, ""},
+		equalsTestCase{float32(32769.2), false, false, ""},
+		equalsTestCase{float32(32769.0), false, false, ""},
+		equalsTestCase{float64(32769.2), false, false, ""},
+		equalsTestCase{complex128(32769.1 + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) LargePositiveFloat32() {
+	const kExpected = 1 << 65
+	matcher := Equals(float32(kExpected))
+	ExpectEq("3.689349e+19", matcher.Description())
+
+	floatExpected := float32(kExpected)
+	castedInt := uint64(floatExpected)
+
+	cases := []equalsTestCase{
+		// Equal values of numeric type.
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{castedInt, false, false, ""},
+		equalsTestCase{int64(0), false, false, ""},
+		equalsTestCase{int64(math.MinInt64), false, false, ""},
+		equalsTestCase{int64(math.MaxInt64), false, false, ""},
+		equalsTestCase{uint64(0), false, false, ""},
+		equalsTestCase{uint64(math.MaxUint64), false, false, ""},
+		equalsTestCase{float32(kExpected / 2), false, false, ""},
+		equalsTestCase{float64(kExpected / 2), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) Float32AboveExactIntegerRange() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := Equals(float32(kTwoTo25 + 1))
+	ExpectEq("3.3554432e+07", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Integers.
+		equalsTestCase{int64(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{int64(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 3), false, false, ""},
+
+		equalsTestCase{uint64(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{uint64(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 3), false, false, ""},
+
+		// Single-precision floating point.
+		equalsTestCase{float32(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{float32(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 3), false, false, ""},
+
+		equalsTestCase{complex64(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{complex64(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 3), false, false, ""},
+
+		// Double-precision floating point.
+		equalsTestCase{float64(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{float64(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 3), false, false, ""},
+
+		equalsTestCase{complex128(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{complex128(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// float64
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NegativeIntegralFloat64() {
+	const kExpected = -(1 << 50)
+	matcher := Equals(float64(kExpected))
+	ExpectEq("-1.125899906842624e+15", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{-1125899906842624.0, true, false, ""},
+		equalsTestCase{-1125899906842624.0 + 0i, true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+		equalsTestCase{interface{}(float64(kExpected)), true, false, ""},
+
+		// Values that would be kExpected in two's complement.
+		equalsTestCase{uint64((1 << 64) + kExpected), false, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{float32(kExpected - (1 << 30)), false, false, ""},
+		equalsTestCase{float32(kExpected + (1 << 30)), false, false, ""},
+		equalsTestCase{float64(kExpected - 0.5), false, false, ""},
+		equalsTestCase{float64(kExpected + 0.5), false, false, ""},
+		equalsTestCase{complex128(kExpected - 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) NegativeNonIntegralFloat64() {
+	const kTwoTo50 = 1 << 50
+	const kExpected = -kTwoTo50 - 0.25
+
+	matcher := Equals(float64(kExpected))
+	ExpectEq("-1.1258999068426242e+15", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{kExpected, true, false, ""},
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(-kTwoTo50), false, false, ""},
+		equalsTestCase{int64(-kTwoTo50 - 1), false, false, ""},
+		equalsTestCase{float32(kExpected - (1 << 30)), false, false, ""},
+		equalsTestCase{float64(kExpected - 0.25), false, false, ""},
+		equalsTestCase{float64(kExpected + 0.25), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) LargeNegativeFloat64() {
+	const kExpected = -1 * (1 << 65)
+	matcher := Equals(float64(kExpected))
+	ExpectEq("-3.6893488147419103e+19", matcher.Description())
+
+	floatExpected := float64(kExpected)
+	castedInt := int64(floatExpected)
+
+	cases := []equalsTestCase{
+		// Equal values of numeric type.
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{castedInt, false, false, ""},
+		equalsTestCase{int64(0), false, false, ""},
+		equalsTestCase{int64(math.MinInt64), false, false, ""},
+		equalsTestCase{int64(math.MaxInt64), false, false, ""},
+		equalsTestCase{float32(kExpected / 2), false, false, ""},
+		equalsTestCase{float64(kExpected / 2), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) ZeroFloat64() {
+	matcher := Equals(float64(0))
+	ExpectEq("0", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of zero.
+		equalsTestCase{0.0, true, false, ""},
+		equalsTestCase{0 + 0i, true, false, ""},
+		equalsTestCase{int(0), true, false, ""},
+		equalsTestCase{int8(0), true, false, ""},
+		equalsTestCase{int16(0), true, false, ""},
+		equalsTestCase{int32(0), true, false, ""},
+		equalsTestCase{int64(0), true, false, ""},
+		equalsTestCase{uint(0), true, false, ""},
+		equalsTestCase{uint8(0), true, false, ""},
+		equalsTestCase{uint16(0), true, false, ""},
+		equalsTestCase{uint32(0), true, false, ""},
+		equalsTestCase{uint64(0), true, false, ""},
+		equalsTestCase{uintptr(0), true, false, ""},
+		equalsTestCase{float32(0), true, false, ""},
+		equalsTestCase{float64(0), true, false, ""},
+		equalsTestCase{complex64(0), true, false, ""},
+		equalsTestCase{complex128(0), true, false, ""},
+		equalsTestCase{interface{}(float32(0)), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(1), false, false, ""},
+		equalsTestCase{int64(-1), false, false, ""},
+		equalsTestCase{float32(1), false, false, ""},
+		equalsTestCase{float32(-1), false, false, ""},
+		equalsTestCase{complex128(0 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveIntegralFloat64() {
+	const kExpected = 1 << 50
+	matcher := Equals(float64(kExpected))
+	ExpectEq("1.125899906842624e+15", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 32769.
+		equalsTestCase{1125899906842624.0, true, false, ""},
+		equalsTestCase{1125899906842624.0 + 0i, true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{uintptr(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+		equalsTestCase{interface{}(float64(kExpected)), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{uintptr(kExpected + 1), false, false, ""},
+		equalsTestCase{float32(kExpected - (1 << 30)), false, false, ""},
+		equalsTestCase{float32(kExpected + (1 << 30)), false, false, ""},
+		equalsTestCase{float64(kExpected - 0.5), false, false, ""},
+		equalsTestCase{float64(kExpected + 0.5), false, false, ""},
+		equalsTestCase{complex128(kExpected - 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveNonIntegralFloat64() {
+	const kTwoTo50 = 1 << 50
+	const kExpected = kTwoTo50 + 0.25
+	matcher := Equals(float64(kExpected))
+	ExpectEq("1.1258999068426242e+15", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{kExpected, true, false, ""},
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(kTwoTo50), false, false, ""},
+		equalsTestCase{int64(kTwoTo50 - 1), false, false, ""},
+		equalsTestCase{float64(kExpected - 0.25), false, false, ""},
+		equalsTestCase{float64(kExpected + 0.25), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) LargePositiveFloat64() {
+	const kExpected = 1 << 65
+	matcher := Equals(float64(kExpected))
+	ExpectEq("3.6893488147419103e+19", matcher.Description())
+
+	floatExpected := float64(kExpected)
+	castedInt := uint64(floatExpected)
+
+	cases := []equalsTestCase{
+		// Equal values of numeric type.
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{castedInt, false, false, ""},
+		equalsTestCase{int64(0), false, false, ""},
+		equalsTestCase{int64(math.MinInt64), false, false, ""},
+		equalsTestCase{int64(math.MaxInt64), false, false, ""},
+		equalsTestCase{uint64(0), false, false, ""},
+		equalsTestCase{uint64(math.MaxUint64), false, false, ""},
+		equalsTestCase{float32(kExpected / 2), false, false, ""},
+		equalsTestCase{float64(kExpected / 2), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) Float64AboveExactIntegerRange() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := Equals(float64(kTwoTo54 + 1))
+	ExpectEq("1.8014398509481984e+16", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Integers.
+		equalsTestCase{int64(kTwoTo54 - 2), false, false, ""},
+		equalsTestCase{int64(kTwoTo54 - 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo54 + 0), true, false, ""},
+		equalsTestCase{int64(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo54 + 2), true, false, ""},
+		equalsTestCase{int64(kTwoTo54 + 3), false, false, ""},
+
+		equalsTestCase{uint64(kTwoTo54 - 2), false, false, ""},
+		equalsTestCase{uint64(kTwoTo54 - 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo54 + 0), true, false, ""},
+		equalsTestCase{uint64(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo54 + 2), true, false, ""},
+		equalsTestCase{uint64(kTwoTo54 + 3), false, false, ""},
+
+		// Double-precision floating point.
+		equalsTestCase{float64(kTwoTo54 - 2), false, false, ""},
+		equalsTestCase{float64(kTwoTo54 - 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 0), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 2), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 3), false, false, ""},
+
+		equalsTestCase{complex128(kTwoTo54 - 2), false, false, ""},
+		equalsTestCase{complex128(kTwoTo54 - 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 0), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 2), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// complex64
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NegativeIntegralComplex64() {
+	const kExpected = -32769
+	matcher := Equals(complex64(kExpected))
+	ExpectEq("(-32769+0i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{-32769.0, true, false, ""},
+		equalsTestCase{-32769.0 + 0i, true, false, ""},
+		equalsTestCase{int(kExpected), true, false, ""},
+		equalsTestCase{int32(kExpected), true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+		equalsTestCase{interface{}(float64(kExpected)), true, false, ""},
+
+		// Values that would be kExpected in two's complement.
+		equalsTestCase{uint32((1 << 32) + kExpected), false, false, ""},
+		equalsTestCase{uint64((1 << 64) + kExpected), false, false, ""},
+		equalsTestCase{uintptr((1 << 64) + kExpected), false, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{float32(kExpected - (1 << 30)), false, false, ""},
+		equalsTestCase{float32(kExpected + (1 << 30)), false, false, ""},
+		equalsTestCase{float64(kExpected - 0.5), false, false, ""},
+		equalsTestCase{float64(kExpected + 0.5), false, false, ""},
+		equalsTestCase{complex64(kExpected - 1), false, false, ""},
+		equalsTestCase{complex64(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected - 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) NegativeNonIntegralComplex64() {
+	const kTwoTo20 = 1 << 20
+	const kExpected = -kTwoTo20 - 0.25
+
+	matcher := Equals(complex64(kExpected))
+	ExpectEq("(-1.0485762e+06+0i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{kExpected, true, false, ""},
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(-kTwoTo20), false, false, ""},
+		equalsTestCase{int(-kTwoTo20 - 1), false, false, ""},
+		equalsTestCase{int32(-kTwoTo20), false, false, ""},
+		equalsTestCase{int32(-kTwoTo20 - 1), false, false, ""},
+		equalsTestCase{int64(-kTwoTo20), false, false, ""},
+		equalsTestCase{int64(-kTwoTo20 - 1), false, false, ""},
+		equalsTestCase{float32(kExpected - (1 << 30)), false, false, ""},
+		equalsTestCase{float64(kExpected - 0.25), false, false, ""},
+		equalsTestCase{float64(kExpected + 0.25), false, false, ""},
+		equalsTestCase{complex64(kExpected - 0.75), false, false, ""},
+		equalsTestCase{complex64(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected - 0.75), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) LargeNegativeComplex64() {
+	const kExpected = -1 * (1 << 65)
+	matcher := Equals(complex64(kExpected))
+	ExpectEq("(-3.689349e+19+0i)", matcher.Description())
+
+	floatExpected := float64(kExpected)
+	castedInt := int64(floatExpected)
+
+	cases := []equalsTestCase{
+		// Equal values of numeric type.
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{castedInt, false, false, ""},
+		equalsTestCase{int64(0), false, false, ""},
+		equalsTestCase{int64(math.MinInt64), false, false, ""},
+		equalsTestCase{int64(math.MaxInt64), false, false, ""},
+		equalsTestCase{float32(kExpected / 2), false, false, ""},
+		equalsTestCase{float64(kExpected / 2), false, false, ""},
+		equalsTestCase{complex64(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) ZeroComplex64() {
+	matcher := Equals(complex64(0))
+	ExpectEq("(0+0i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of zero.
+		equalsTestCase{0.0, true, false, ""},
+		equalsTestCase{0 + 0i, true, false, ""},
+		equalsTestCase{int(0), true, false, ""},
+		equalsTestCase{int8(0), true, false, ""},
+		equalsTestCase{int16(0), true, false, ""},
+		equalsTestCase{int32(0), true, false, ""},
+		equalsTestCase{int64(0), true, false, ""},
+		equalsTestCase{uint(0), true, false, ""},
+		equalsTestCase{uint8(0), true, false, ""},
+		equalsTestCase{uint16(0), true, false, ""},
+		equalsTestCase{uint32(0), true, false, ""},
+		equalsTestCase{uint64(0), true, false, ""},
+		equalsTestCase{uintptr(0), true, false, ""},
+		equalsTestCase{float32(0), true, false, ""},
+		equalsTestCase{float64(0), true, false, ""},
+		equalsTestCase{complex64(0), true, false, ""},
+		equalsTestCase{complex128(0), true, false, ""},
+		equalsTestCase{interface{}(float32(0)), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(1), false, false, ""},
+		equalsTestCase{int64(-1), false, false, ""},
+		equalsTestCase{float32(1), false, false, ""},
+		equalsTestCase{float32(-1), false, false, ""},
+		equalsTestCase{float64(1), false, false, ""},
+		equalsTestCase{float64(-1), false, false, ""},
+		equalsTestCase{complex64(0 + 2i), false, false, ""},
+		equalsTestCase{complex128(0 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveIntegralComplex64() {
+	const kExpected = 1 << 20
+	matcher := Equals(complex64(kExpected))
+	ExpectEq("(1.048576e+06+0i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 32769.
+		equalsTestCase{1048576.0, true, false, ""},
+		equalsTestCase{1048576.0 + 0i, true, false, ""},
+		equalsTestCase{int(kExpected), true, false, ""},
+		equalsTestCase{int32(kExpected), true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint(kExpected), true, false, ""},
+		equalsTestCase{uint32(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{uintptr(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+		equalsTestCase{interface{}(float64(kExpected)), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(kExpected + 1), false, false, ""},
+		equalsTestCase{int32(kExpected + 1), false, false, ""},
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint(kExpected + 1), false, false, ""},
+		equalsTestCase{uint32(kExpected + 1), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{uintptr(kExpected + 1), false, false, ""},
+		equalsTestCase{float32(kExpected - (1 << 30)), false, false, ""},
+		equalsTestCase{float32(kExpected + (1 << 30)), false, false, ""},
+		equalsTestCase{float64(kExpected - 0.5), false, false, ""},
+		equalsTestCase{float64(kExpected + 0.5), false, false, ""},
+		equalsTestCase{complex128(kExpected - 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveNonIntegralComplex64() {
+	const kTwoTo20 = 1 << 20
+	const kExpected = kTwoTo20 + 0.25
+	matcher := Equals(complex64(kExpected))
+	ExpectEq("(1.0485762e+06+0i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{kExpected, true, false, ""},
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(kTwoTo20), false, false, ""},
+		equalsTestCase{int64(kTwoTo20 - 1), false, false, ""},
+		equalsTestCase{uint64(kTwoTo20), false, false, ""},
+		equalsTestCase{uint64(kTwoTo20 - 1), false, false, ""},
+		equalsTestCase{float32(kExpected - 1), false, false, ""},
+		equalsTestCase{float32(kExpected + 1), false, false, ""},
+		equalsTestCase{float64(kExpected - 0.25), false, false, ""},
+		equalsTestCase{float64(kExpected + 0.25), false, false, ""},
+		equalsTestCase{complex64(kExpected - 1), false, false, ""},
+		equalsTestCase{complex64(kExpected - 1i), false, false, ""},
+		equalsTestCase{complex128(kExpected - 1), false, false, ""},
+		equalsTestCase{complex128(kExpected - 1i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) LargePositiveComplex64() {
+	const kExpected = 1 << 65
+	matcher := Equals(complex64(kExpected))
+	ExpectEq("(3.689349e+19+0i)", matcher.Description())
+
+	floatExpected := float64(kExpected)
+	castedInt := uint64(floatExpected)
+
+	cases := []equalsTestCase{
+		// Equal values of numeric type.
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{castedInt, false, false, ""},
+		equalsTestCase{int64(0), false, false, ""},
+		equalsTestCase{int64(math.MinInt64), false, false, ""},
+		equalsTestCase{int64(math.MaxInt64), false, false, ""},
+		equalsTestCase{uint64(0), false, false, ""},
+		equalsTestCase{uint64(math.MaxUint64), false, false, ""},
+		equalsTestCase{float32(kExpected / 2), false, false, ""},
+		equalsTestCase{float64(kExpected / 2), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) Complex64AboveExactIntegerRange() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := Equals(complex64(kTwoTo25 + 1))
+	ExpectEq("(3.3554432e+07+0i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Integers.
+		equalsTestCase{int64(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{int64(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{int64(kTwoTo25 + 3), false, false, ""},
+
+		equalsTestCase{uint64(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{uint64(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{uint64(kTwoTo25 + 3), false, false, ""},
+
+		// Single-precision floating point.
+		equalsTestCase{float32(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{float32(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{float32(kTwoTo25 + 3), false, false, ""},
+
+		equalsTestCase{complex64(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{complex64(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{complex64(kTwoTo25 + 3), false, false, ""},
+
+		// Double-precision floating point.
+		equalsTestCase{float64(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{float64(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{float64(kTwoTo25 + 3), false, false, ""},
+
+		equalsTestCase{complex128(kTwoTo25 - 2), false, false, ""},
+		equalsTestCase{complex128(kTwoTo25 - 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 0), true, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 2), true, false, ""},
+		equalsTestCase{complex128(kTwoTo25 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) Complex64WithNonZeroImaginaryPart() {
+	const kRealPart = 17
+	const kImagPart = 0.25i
+	const kExpected = kRealPart + kImagPart
+	matcher := Equals(complex64(kExpected))
+	ExpectEq("(17+0.25i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{kExpected, true, false, ""},
+		equalsTestCase{kRealPart + kImagPart, true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(kRealPart), false, false, ""},
+		equalsTestCase{int8(kRealPart), false, false, ""},
+		equalsTestCase{int16(kRealPart), false, false, ""},
+		equalsTestCase{int32(kRealPart), false, false, ""},
+		equalsTestCase{int64(kRealPart), false, false, ""},
+		equalsTestCase{uint(kRealPart), false, false, ""},
+		equalsTestCase{uint8(kRealPart), false, false, ""},
+		equalsTestCase{uint16(kRealPart), false, false, ""},
+		equalsTestCase{uint32(kRealPart), false, false, ""},
+		equalsTestCase{uint64(kRealPart), false, false, ""},
+		equalsTestCase{float32(kRealPart), false, false, ""},
+		equalsTestCase{float64(kRealPart), false, false, ""},
+		equalsTestCase{complex64(kRealPart), false, false, ""},
+		equalsTestCase{complex64(kRealPart + kImagPart + 0.5), false, false, ""},
+		equalsTestCase{complex64(kRealPart + kImagPart + 0.5i), false, false, ""},
+		equalsTestCase{complex128(kRealPart), false, false, ""},
+		equalsTestCase{complex128(kRealPart + kImagPart + 0.5), false, false, ""},
+		equalsTestCase{complex128(kRealPart + kImagPart + 0.5i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// complex128
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NegativeIntegralComplex128() {
+	const kExpected = -32769
+	matcher := Equals(complex128(kExpected))
+	ExpectEq("(-32769+0i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{-32769.0, true, false, ""},
+		equalsTestCase{-32769.0 + 0i, true, false, ""},
+		equalsTestCase{int(kExpected), true, false, ""},
+		equalsTestCase{int32(kExpected), true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+		equalsTestCase{interface{}(float64(kExpected)), true, false, ""},
+
+		// Values that would be kExpected in two's complement.
+		equalsTestCase{uint32((1 << 32) + kExpected), false, false, ""},
+		equalsTestCase{uint64((1 << 64) + kExpected), false, false, ""},
+		equalsTestCase{uintptr((1 << 64) + kExpected), false, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{float32(kExpected - (1 << 30)), false, false, ""},
+		equalsTestCase{float32(kExpected + (1 << 30)), false, false, ""},
+		equalsTestCase{float64(kExpected - 0.5), false, false, ""},
+		equalsTestCase{float64(kExpected + 0.5), false, false, ""},
+		equalsTestCase{complex64(kExpected - 1), false, false, ""},
+		equalsTestCase{complex64(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected - 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) NegativeNonIntegralComplex128() {
+	const kTwoTo20 = 1 << 20
+	const kExpected = -kTwoTo20 - 0.25
+
+	matcher := Equals(complex128(kExpected))
+	ExpectEq("(-1.04857625e+06+0i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{kExpected, true, false, ""},
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(-kTwoTo20), false, false, ""},
+		equalsTestCase{int(-kTwoTo20 - 1), false, false, ""},
+		equalsTestCase{int32(-kTwoTo20), false, false, ""},
+		equalsTestCase{int32(-kTwoTo20 - 1), false, false, ""},
+		equalsTestCase{int64(-kTwoTo20), false, false, ""},
+		equalsTestCase{int64(-kTwoTo20 - 1), false, false, ""},
+		equalsTestCase{float32(kExpected - (1 << 30)), false, false, ""},
+		equalsTestCase{float64(kExpected - 0.25), false, false, ""},
+		equalsTestCase{float64(kExpected + 0.25), false, false, ""},
+		equalsTestCase{complex64(kExpected - 0.75), false, false, ""},
+		equalsTestCase{complex64(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected - 0.75), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) LargeNegativeComplex128() {
+	const kExpected = -1 * (1 << 65)
+	matcher := Equals(complex128(kExpected))
+	ExpectEq("(-3.6893488147419103e+19+0i)", matcher.Description())
+
+	floatExpected := float64(kExpected)
+	castedInt := int64(floatExpected)
+
+	cases := []equalsTestCase{
+		// Equal values of numeric type.
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{castedInt, false, false, ""},
+		equalsTestCase{int64(0), false, false, ""},
+		equalsTestCase{int64(math.MinInt64), false, false, ""},
+		equalsTestCase{int64(math.MaxInt64), false, false, ""},
+		equalsTestCase{float32(kExpected / 2), false, false, ""},
+		equalsTestCase{float64(kExpected / 2), false, false, ""},
+		equalsTestCase{complex64(kExpected + 2i), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) ZeroComplex128() {
+	matcher := Equals(complex128(0))
+	ExpectEq("(0+0i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of zero.
+		equalsTestCase{0.0, true, false, ""},
+		equalsTestCase{0 + 0i, true, false, ""},
+		equalsTestCase{int(0), true, false, ""},
+		equalsTestCase{int8(0), true, false, ""},
+		equalsTestCase{int16(0), true, false, ""},
+		equalsTestCase{int32(0), true, false, ""},
+		equalsTestCase{int64(0), true, false, ""},
+		equalsTestCase{uint(0), true, false, ""},
+		equalsTestCase{uint8(0), true, false, ""},
+		equalsTestCase{uint16(0), true, false, ""},
+		equalsTestCase{uint32(0), true, false, ""},
+		equalsTestCase{uint64(0), true, false, ""},
+		equalsTestCase{uintptr(0), true, false, ""},
+		equalsTestCase{float32(0), true, false, ""},
+		equalsTestCase{float64(0), true, false, ""},
+		equalsTestCase{complex64(0), true, false, ""},
+		equalsTestCase{complex128(0), true, false, ""},
+		equalsTestCase{interface{}(float32(0)), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(1), false, false, ""},
+		equalsTestCase{int64(-1), false, false, ""},
+		equalsTestCase{float32(1), false, false, ""},
+		equalsTestCase{float32(-1), false, false, ""},
+		equalsTestCase{float64(1), false, false, ""},
+		equalsTestCase{float64(-1), false, false, ""},
+		equalsTestCase{complex64(0 + 2i), false, false, ""},
+		equalsTestCase{complex128(0 + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveIntegralComplex128() {
+	const kExpected = 1 << 20
+	matcher := Equals(complex128(kExpected))
+	ExpectEq("(1.048576e+06+0i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of 32769.
+		equalsTestCase{1048576.0, true, false, ""},
+		equalsTestCase{1048576.0 + 0i, true, false, ""},
+		equalsTestCase{int(kExpected), true, false, ""},
+		equalsTestCase{int32(kExpected), true, false, ""},
+		equalsTestCase{int64(kExpected), true, false, ""},
+		equalsTestCase{uint(kExpected), true, false, ""},
+		equalsTestCase{uint32(kExpected), true, false, ""},
+		equalsTestCase{uint64(kExpected), true, false, ""},
+		equalsTestCase{uintptr(kExpected), true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+		equalsTestCase{interface{}(float64(kExpected)), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(kExpected + 1), false, false, ""},
+		equalsTestCase{int32(kExpected + 1), false, false, ""},
+		equalsTestCase{int64(kExpected + 1), false, false, ""},
+		equalsTestCase{uint(kExpected + 1), false, false, ""},
+		equalsTestCase{uint32(kExpected + 1), false, false, ""},
+		equalsTestCase{uint64(kExpected + 1), false, false, ""},
+		equalsTestCase{uintptr(kExpected + 1), false, false, ""},
+		equalsTestCase{float32(kExpected - (1 << 30)), false, false, ""},
+		equalsTestCase{float32(kExpected + (1 << 30)), false, false, ""},
+		equalsTestCase{float64(kExpected - 0.5), false, false, ""},
+		equalsTestCase{float64(kExpected + 0.5), false, false, ""},
+		equalsTestCase{complex128(kExpected - 1), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+
+		// Non-numeric types.
+		equalsTestCase{true, false, true, "which is not numeric"},
+		equalsTestCase{[...]int{}, false, true, "which is not numeric"},
+		equalsTestCase{make(chan int), false, true, "which is not numeric"},
+		equalsTestCase{func() {}, false, true, "which is not numeric"},
+		equalsTestCase{map[int]int{}, false, true, "which is not numeric"},
+		equalsTestCase{&someInt, false, true, "which is not numeric"},
+		equalsTestCase{[]int{}, false, true, "which is not numeric"},
+		equalsTestCase{"taco", false, true, "which is not numeric"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not numeric"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) PositiveNonIntegralComplex128() {
+	const kTwoTo20 = 1 << 20
+	const kExpected = kTwoTo20 + 0.25
+	matcher := Equals(complex128(kExpected))
+	ExpectEq("(1.04857625e+06+0i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{kExpected, true, false, ""},
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int64(kTwoTo20), false, false, ""},
+		equalsTestCase{int64(kTwoTo20 - 1), false, false, ""},
+		equalsTestCase{uint64(kTwoTo20), false, false, ""},
+		equalsTestCase{uint64(kTwoTo20 - 1), false, false, ""},
+		equalsTestCase{float32(kExpected - 1), false, false, ""},
+		equalsTestCase{float32(kExpected + 1), false, false, ""},
+		equalsTestCase{float64(kExpected - 0.25), false, false, ""},
+		equalsTestCase{float64(kExpected + 0.25), false, false, ""},
+		equalsTestCase{complex64(kExpected - 1), false, false, ""},
+		equalsTestCase{complex64(kExpected - 1i), false, false, ""},
+		equalsTestCase{complex128(kExpected - 1), false, false, ""},
+		equalsTestCase{complex128(kExpected - 1i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) LargePositiveComplex128() {
+	const kExpected = 1 << 65
+	matcher := Equals(complex128(kExpected))
+	ExpectEq("(3.6893488147419103e+19+0i)", matcher.Description())
+
+	floatExpected := float64(kExpected)
+	castedInt := uint64(floatExpected)
+
+	cases := []equalsTestCase{
+		// Equal values of numeric type.
+		equalsTestCase{kExpected + 0i, true, false, ""},
+		equalsTestCase{float32(kExpected), true, false, ""},
+		equalsTestCase{float64(kExpected), true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{castedInt, false, false, ""},
+		equalsTestCase{int64(0), false, false, ""},
+		equalsTestCase{int64(math.MinInt64), false, false, ""},
+		equalsTestCase{int64(math.MaxInt64), false, false, ""},
+		equalsTestCase{uint64(0), false, false, ""},
+		equalsTestCase{uint64(math.MaxUint64), false, false, ""},
+		equalsTestCase{float32(kExpected / 2), false, false, ""},
+		equalsTestCase{float64(kExpected / 2), false, false, ""},
+		equalsTestCase{complex128(kExpected + 2i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) Complex128AboveExactIntegerRange() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := Equals(complex128(kTwoTo54 + 1))
+	ExpectEq("(1.8014398509481984e+16+0i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Integers.
+		equalsTestCase{int64(kTwoTo54 - 2), false, false, ""},
+		equalsTestCase{int64(kTwoTo54 - 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo54 + 0), true, false, ""},
+		equalsTestCase{int64(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{int64(kTwoTo54 + 2), true, false, ""},
+		equalsTestCase{int64(kTwoTo54 + 3), false, false, ""},
+
+		equalsTestCase{uint64(kTwoTo54 - 2), false, false, ""},
+		equalsTestCase{uint64(kTwoTo54 - 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo54 + 0), true, false, ""},
+		equalsTestCase{uint64(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{uint64(kTwoTo54 + 2), true, false, ""},
+		equalsTestCase{uint64(kTwoTo54 + 3), false, false, ""},
+
+		// Double-precision floating point.
+		equalsTestCase{float64(kTwoTo54 - 2), false, false, ""},
+		equalsTestCase{float64(kTwoTo54 - 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 0), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 2), true, false, ""},
+		equalsTestCase{float64(kTwoTo54 + 3), false, false, ""},
+
+		equalsTestCase{complex128(kTwoTo54 - 2), false, false, ""},
+		equalsTestCase{complex128(kTwoTo54 - 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 0), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 1), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 2), true, false, ""},
+		equalsTestCase{complex128(kTwoTo54 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) Complex128WithNonZeroImaginaryPart() {
+	const kRealPart = 17
+	const kImagPart = 0.25i
+	const kExpected = kRealPart + kImagPart
+	matcher := Equals(complex128(kExpected))
+	ExpectEq("(17+0.25i)", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Various types of the expected value.
+		equalsTestCase{kExpected, true, false, ""},
+		equalsTestCase{kRealPart + kImagPart, true, false, ""},
+		equalsTestCase{complex64(kExpected), true, false, ""},
+		equalsTestCase{complex128(kExpected), true, false, ""},
+
+		// Non-equal values of numeric type.
+		equalsTestCase{int(kRealPart), false, false, ""},
+		equalsTestCase{int8(kRealPart), false, false, ""},
+		equalsTestCase{int16(kRealPart), false, false, ""},
+		equalsTestCase{int32(kRealPart), false, false, ""},
+		equalsTestCase{int64(kRealPart), false, false, ""},
+		equalsTestCase{uint(kRealPart), false, false, ""},
+		equalsTestCase{uint8(kRealPart), false, false, ""},
+		equalsTestCase{uint16(kRealPart), false, false, ""},
+		equalsTestCase{uint32(kRealPart), false, false, ""},
+		equalsTestCase{uint64(kRealPart), false, false, ""},
+		equalsTestCase{float32(kRealPart), false, false, ""},
+		equalsTestCase{float64(kRealPart), false, false, ""},
+		equalsTestCase{complex64(kRealPart), false, false, ""},
+		equalsTestCase{complex64(kRealPart + kImagPart + 0.5), false, false, ""},
+		equalsTestCase{complex64(kRealPart + kImagPart + 0.5i), false, false, ""},
+		equalsTestCase{complex128(kRealPart), false, false, ""},
+		equalsTestCase{complex128(kRealPart + kImagPart + 0.5), false, false, ""},
+		equalsTestCase{complex128(kRealPart + kImagPart + 0.5i), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Arrays
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) ArrayOfComparableType() {
+	expected := [3]uint{17, 19, 23}
+
+	matcher := Equals(expected)
+	ExpectEq("[17 19 23]", matcher.Description())
+
+	// To defeat constant de-duping by the compiler.
+	makeArray := func(i, j, k uint) [3]uint { return [3]uint{i, j, k} }
+
+	type arrayAlias [3]uint
+	type uintAlias uint
+
+	cases := []equalsTestCase{
+		// Correct types, equal.
+		equalsTestCase{expected, true, false, ""},
+		equalsTestCase{[3]uint{17, 19, 23}, true, false, ""},
+		equalsTestCase{makeArray(17, 19, 23), true, false, ""},
+
+		// Correct types, not equal.
+		equalsTestCase{[3]uint{0, 0, 0}, false, false, ""},
+		equalsTestCase{[3]uint{18, 19, 23}, false, false, ""},
+		equalsTestCase{[3]uint{17, 20, 23}, false, false, ""},
+		equalsTestCase{[3]uint{17, 19, 22}, false, false, ""},
+
+		// Other types.
+		equalsTestCase{0, false, true, "which is not [3]uint"},
+		equalsTestCase{bool(false), false, true, "which is not [3]uint"},
+		equalsTestCase{int(0), false, true, "which is not [3]uint"},
+		equalsTestCase{int8(0), false, true, "which is not [3]uint"},
+		equalsTestCase{int16(0), false, true, "which is not [3]uint"},
+		equalsTestCase{int32(0), false, true, "which is not [3]uint"},
+		equalsTestCase{int64(0), false, true, "which is not [3]uint"},
+		equalsTestCase{uint(0), false, true, "which is not [3]uint"},
+		equalsTestCase{uint8(0), false, true, "which is not [3]uint"},
+		equalsTestCase{uint16(0), false, true, "which is not [3]uint"},
+		equalsTestCase{uint32(0), false, true, "which is not [3]uint"},
+		equalsTestCase{uint64(0), false, true, "which is not [3]uint"},
+		equalsTestCase{true, false, true, "which is not [3]uint"},
+		equalsTestCase{[...]int{}, false, true, "which is not [3]uint"},
+		equalsTestCase{func() {}, false, true, "which is not [3]uint"},
+		equalsTestCase{map[int]int{}, false, true, "which is not [3]uint"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not [3]uint"},
+		equalsTestCase{[2]uint{17, 19}, false, true, "which is not [3]uint"},
+		equalsTestCase{[4]uint{17, 19, 23, 0}, false, true, "which is not [3]uint"},
+		equalsTestCase{arrayAlias{17, 19, 23}, false, true, "which is not [3]uint"},
+		equalsTestCase{[3]uintAlias{17, 19, 23}, false, true, "which is not [3]uint"},
+		equalsTestCase{[3]int32{17, 19, 23}, false, true, "which is not [3]uint"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) ArrayOfNonComparableType() {
+	type nonComparableArray [2]map[string]string
+	f := func() {
+		ExpectEq(nonComparableArray{}, nonComparableArray{})
+	}
+
+	ExpectThat(f, Panics(MatchesRegexp("uncomparable.*nonComparableArray")))
+}
+
+////////////////////////////////////////////////////////////////////////
+// chan
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NilChan() {
+	var nilChan1 chan int
+	var nilChan2 chan int
+	var nilChan3 chan uint
+	var nonNilChan1 chan int = make(chan int)
+	var nonNilChan2 chan uint = make(chan uint)
+
+	matcher := Equals(nilChan1)
+	ExpectEq("<nil>", matcher.Description())
+
+	cases := []equalsTestCase{
+		// int channels
+		equalsTestCase{nilChan1, true, false, ""},
+		equalsTestCase{nilChan2, true, false, ""},
+		equalsTestCase{nonNilChan1, false, false, ""},
+
+		// uint channels
+		equalsTestCase{nilChan3, false, true, "which is not a chan int"},
+		equalsTestCase{nonNilChan2, false, true, "which is not a chan int"},
+
+		// Other types.
+		equalsTestCase{0, false, true, "which is not a chan int"},
+		equalsTestCase{bool(false), false, true, "which is not a chan int"},
+		equalsTestCase{int(0), false, true, "which is not a chan int"},
+		equalsTestCase{int8(0), false, true, "which is not a chan int"},
+		equalsTestCase{int16(0), false, true, "which is not a chan int"},
+		equalsTestCase{int32(0), false, true, "which is not a chan int"},
+		equalsTestCase{int64(0), false, true, "which is not a chan int"},
+		equalsTestCase{uint(0), false, true, "which is not a chan int"},
+		equalsTestCase{uint8(0), false, true, "which is not a chan int"},
+		equalsTestCase{uint16(0), false, true, "which is not a chan int"},
+		equalsTestCase{uint32(0), false, true, "which is not a chan int"},
+		equalsTestCase{uint64(0), false, true, "which is not a chan int"},
+		equalsTestCase{true, false, true, "which is not a chan int"},
+		equalsTestCase{[...]int{}, false, true, "which is not a chan int"},
+		equalsTestCase{func() {}, false, true, "which is not a chan int"},
+		equalsTestCase{map[int]int{}, false, true, "which is not a chan int"},
+		equalsTestCase{&someInt, false, true, "which is not a chan int"},
+		equalsTestCase{[]int{}, false, true, "which is not a chan int"},
+		equalsTestCase{"taco", false, true, "which is not a chan int"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not a chan int"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) NonNilChan() {
+	var nilChan1 chan int
+	var nilChan2 chan uint
+	var nonNilChan1 chan int = make(chan int)
+	var nonNilChan2 chan int = make(chan int)
+	var nonNilChan3 chan uint = make(chan uint)
+
+	matcher := Equals(nonNilChan1)
+	ExpectEq(fmt.Sprintf("%v", nonNilChan1), matcher.Description())
+
+	cases := []equalsTestCase{
+		// int channels
+		equalsTestCase{nonNilChan1, true, false, ""},
+		equalsTestCase{nonNilChan2, false, false, ""},
+		equalsTestCase{nilChan1, false, false, ""},
+
+		// uint channels
+		equalsTestCase{nilChan2, false, true, "which is not a chan int"},
+		equalsTestCase{nonNilChan3, false, true, "which is not a chan int"},
+
+		// Other types.
+		equalsTestCase{0, false, true, "which is not a chan int"},
+		equalsTestCase{bool(false), false, true, "which is not a chan int"},
+		equalsTestCase{int(0), false, true, "which is not a chan int"},
+		equalsTestCase{int8(0), false, true, "which is not a chan int"},
+		equalsTestCase{int16(0), false, true, "which is not a chan int"},
+		equalsTestCase{int32(0), false, true, "which is not a chan int"},
+		equalsTestCase{int64(0), false, true, "which is not a chan int"},
+		equalsTestCase{uint(0), false, true, "which is not a chan int"},
+		equalsTestCase{uint8(0), false, true, "which is not a chan int"},
+		equalsTestCase{uint16(0), false, true, "which is not a chan int"},
+		equalsTestCase{uint32(0), false, true, "which is not a chan int"},
+		equalsTestCase{uint64(0), false, true, "which is not a chan int"},
+		equalsTestCase{true, false, true, "which is not a chan int"},
+		equalsTestCase{[...]int{}, false, true, "which is not a chan int"},
+		equalsTestCase{func() {}, false, true, "which is not a chan int"},
+		equalsTestCase{map[int]int{}, false, true, "which is not a chan int"},
+		equalsTestCase{&someInt, false, true, "which is not a chan int"},
+		equalsTestCase{[]int{}, false, true, "which is not a chan int"},
+		equalsTestCase{"taco", false, true, "which is not a chan int"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not a chan int"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) ChanDirection() {
+	var chan1 chan<- int
+	var chan2 <-chan int
+	var chan3 chan int
+
+	matcher := Equals(chan1)
+	ExpectEq(fmt.Sprintf("%v", chan1), matcher.Description())
+
+	cases := []equalsTestCase{
+		equalsTestCase{chan1, true, false, ""},
+		equalsTestCase{chan2, false, true, "which is not a chan<- int"},
+		equalsTestCase{chan3, false, true, "which is not a chan<- int"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// func
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) Functions() {
+	func1 := func() {}
+	func2 := func() {}
+	func3 := func(x int) {}
+
+	matcher := Equals(func1)
+	ExpectEq(fmt.Sprintf("%v", func1), matcher.Description())
+
+	cases := []equalsTestCase{
+		// Functions.
+		equalsTestCase{func1, true, false, ""},
+		equalsTestCase{func2, false, false, ""},
+		equalsTestCase{func3, false, false, ""},
+
+		// Other types.
+		equalsTestCase{0, false, true, "which is not a function"},
+		equalsTestCase{bool(false), false, true, "which is not a function"},
+		equalsTestCase{int(0), false, true, "which is not a function"},
+		equalsTestCase{int8(0), false, true, "which is not a function"},
+		equalsTestCase{int16(0), false, true, "which is not a function"},
+		equalsTestCase{int32(0), false, true, "which is not a function"},
+		equalsTestCase{int64(0), false, true, "which is not a function"},
+		equalsTestCase{uint(0), false, true, "which is not a function"},
+		equalsTestCase{uint8(0), false, true, "which is not a function"},
+		equalsTestCase{uint16(0), false, true, "which is not a function"},
+		equalsTestCase{uint32(0), false, true, "which is not a function"},
+		equalsTestCase{uint64(0), false, true, "which is not a function"},
+		equalsTestCase{true, false, true, "which is not a function"},
+		equalsTestCase{[...]int{}, false, true, "which is not a function"},
+		equalsTestCase{map[int]int{}, false, true, "which is not a function"},
+		equalsTestCase{&someInt, false, true, "which is not a function"},
+		equalsTestCase{[]int{}, false, true, "which is not a function"},
+		equalsTestCase{"taco", false, true, "which is not a function"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not a function"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// map
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NilMap() {
+	var nilMap1 map[int]int
+	var nilMap2 map[int]int
+	var nilMap3 map[int]uint
+	var nonNilMap1 map[int]int = make(map[int]int)
+	var nonNilMap2 map[int]uint = make(map[int]uint)
+
+	matcher := Equals(nilMap1)
+	ExpectEq("map[]", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Correct type.
+		equalsTestCase{nilMap1, true, false, ""},
+		equalsTestCase{nilMap2, true, false, ""},
+		equalsTestCase{nilMap3, true, false, ""},
+		equalsTestCase{nonNilMap1, false, false, ""},
+		equalsTestCase{nonNilMap2, false, false, ""},
+
+		// Other types.
+		equalsTestCase{0, false, true, "which is not a map"},
+		equalsTestCase{bool(false), false, true, "which is not a map"},
+		equalsTestCase{int(0), false, true, "which is not a map"},
+		equalsTestCase{int8(0), false, true, "which is not a map"},
+		equalsTestCase{int16(0), false, true, "which is not a map"},
+		equalsTestCase{int32(0), false, true, "which is not a map"},
+		equalsTestCase{int64(0), false, true, "which is not a map"},
+		equalsTestCase{uint(0), false, true, "which is not a map"},
+		equalsTestCase{uint8(0), false, true, "which is not a map"},
+		equalsTestCase{uint16(0), false, true, "which is not a map"},
+		equalsTestCase{uint32(0), false, true, "which is not a map"},
+		equalsTestCase{uint64(0), false, true, "which is not a map"},
+		equalsTestCase{true, false, true, "which is not a map"},
+		equalsTestCase{[...]int{}, false, true, "which is not a map"},
+		equalsTestCase{func() {}, false, true, "which is not a map"},
+		equalsTestCase{&someInt, false, true, "which is not a map"},
+		equalsTestCase{[]int{}, false, true, "which is not a map"},
+		equalsTestCase{"taco", false, true, "which is not a map"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not a map"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) NonNilMap() {
+	var nilMap1 map[int]int
+	var nilMap2 map[int]uint
+	var nonNilMap1 map[int]int = make(map[int]int)
+	var nonNilMap2 map[int]int = make(map[int]int)
+	var nonNilMap3 map[int]uint = make(map[int]uint)
+
+	matcher := Equals(nonNilMap1)
+	ExpectEq("map[]", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Correct type.
+		equalsTestCase{nonNilMap1, true, false, ""},
+		equalsTestCase{nonNilMap2, false, false, ""},
+		equalsTestCase{nonNilMap3, false, false, ""},
+		equalsTestCase{nilMap1, false, false, ""},
+		equalsTestCase{nilMap2, false, false, ""},
+
+		// Other types.
+		equalsTestCase{0, false, true, "which is not a map"},
+		equalsTestCase{bool(false), false, true, "which is not a map"},
+		equalsTestCase{int(0), false, true, "which is not a map"},
+		equalsTestCase{int8(0), false, true, "which is not a map"},
+		equalsTestCase{int16(0), false, true, "which is not a map"},
+		equalsTestCase{int32(0), false, true, "which is not a map"},
+		equalsTestCase{int64(0), false, true, "which is not a map"},
+		equalsTestCase{uint(0), false, true, "which is not a map"},
+		equalsTestCase{uint8(0), false, true, "which is not a map"},
+		equalsTestCase{uint16(0), false, true, "which is not a map"},
+		equalsTestCase{uint32(0), false, true, "which is not a map"},
+		equalsTestCase{uint64(0), false, true, "which is not a map"},
+		equalsTestCase{true, false, true, "which is not a map"},
+		equalsTestCase{[...]int{}, false, true, "which is not a map"},
+		equalsTestCase{func() {}, false, true, "which is not a map"},
+		equalsTestCase{&someInt, false, true, "which is not a map"},
+		equalsTestCase{[]int{}, false, true, "which is not a map"},
+		equalsTestCase{"taco", false, true, "which is not a map"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not a map"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Pointers
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NilPointer() {
+	var someInt int = 17
+	var someUint uint = 17
+
+	var nilInt1 *int
+	var nilInt2 *int
+	var nilUint *uint
+	var nonNilInt *int = &someInt
+	var nonNilUint *uint = &someUint
+
+	matcher := Equals(nilInt1)
+	ExpectEq("<nil>", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Correct type.
+		equalsTestCase{nilInt1, true, false, ""},
+		equalsTestCase{nilInt2, true, false, ""},
+		equalsTestCase{nonNilInt, false, false, ""},
+
+		// Incorrect type.
+		equalsTestCase{nilUint, false, true, "which is not a *int"},
+		equalsTestCase{nonNilUint, false, true, "which is not a *int"},
+
+		// Other types.
+		equalsTestCase{0, false, true, "which is not a *int"},
+		equalsTestCase{bool(false), false, true, "which is not a *int"},
+		equalsTestCase{int(0), false, true, "which is not a *int"},
+		equalsTestCase{int8(0), false, true, "which is not a *int"},
+		equalsTestCase{int16(0), false, true, "which is not a *int"},
+		equalsTestCase{int32(0), false, true, "which is not a *int"},
+		equalsTestCase{int64(0), false, true, "which is not a *int"},
+		equalsTestCase{uint(0), false, true, "which is not a *int"},
+		equalsTestCase{uint8(0), false, true, "which is not a *int"},
+		equalsTestCase{uint16(0), false, true, "which is not a *int"},
+		equalsTestCase{uint32(0), false, true, "which is not a *int"},
+		equalsTestCase{uint64(0), false, true, "which is not a *int"},
+		equalsTestCase{true, false, true, "which is not a *int"},
+		equalsTestCase{[...]int{}, false, true, "which is not a *int"},
+		equalsTestCase{func() {}, false, true, "which is not a *int"},
+		equalsTestCase{map[int]int{}, false, true, "which is not a *int"},
+		equalsTestCase{[]int{}, false, true, "which is not a *int"},
+		equalsTestCase{"taco", false, true, "which is not a *int"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not a *int"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) NonNilPointer() {
+	var someInt int = 17
+	var someOtherInt int = 17
+	var someUint uint = 17
+
+	var nilInt *int
+	var nilUint *uint
+	var nonNilInt1 *int = &someInt
+	var nonNilInt2 *int = &someOtherInt
+	var nonNilUint *uint = &someUint
+
+	matcher := Equals(nonNilInt1)
+	ExpectEq(fmt.Sprintf("%v", nonNilInt1), matcher.Description())
+
+	cases := []equalsTestCase{
+		// Correct type.
+		equalsTestCase{nonNilInt1, true, false, ""},
+		equalsTestCase{nonNilInt2, false, false, ""},
+		equalsTestCase{nilInt, false, false, ""},
+
+		// Incorrect type.
+		equalsTestCase{nilUint, false, true, "which is not a *int"},
+		equalsTestCase{nonNilUint, false, true, "which is not a *int"},
+
+		// Other types.
+		equalsTestCase{0, false, true, "which is not a *int"},
+		equalsTestCase{bool(false), false, true, "which is not a *int"},
+		equalsTestCase{int(0), false, true, "which is not a *int"},
+		equalsTestCase{int8(0), false, true, "which is not a *int"},
+		equalsTestCase{int16(0), false, true, "which is not a *int"},
+		equalsTestCase{int32(0), false, true, "which is not a *int"},
+		equalsTestCase{int64(0), false, true, "which is not a *int"},
+		equalsTestCase{uint(0), false, true, "which is not a *int"},
+		equalsTestCase{uint8(0), false, true, "which is not a *int"},
+		equalsTestCase{uint16(0), false, true, "which is not a *int"},
+		equalsTestCase{uint32(0), false, true, "which is not a *int"},
+		equalsTestCase{uint64(0), false, true, "which is not a *int"},
+		equalsTestCase{true, false, true, "which is not a *int"},
+		equalsTestCase{[...]int{}, false, true, "which is not a *int"},
+		equalsTestCase{func() {}, false, true, "which is not a *int"},
+		equalsTestCase{map[int]int{}, false, true, "which is not a *int"},
+		equalsTestCase{[]int{}, false, true, "which is not a *int"},
+		equalsTestCase{"taco", false, true, "which is not a *int"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not a *int"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Slices
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NilSlice() {
+	var nilInt1 []int
+	var nilInt2 []int
+	var nilUint []uint
+
+	var nonNilInt []int = make([]int, 0)
+	var nonNilUint []uint = make([]uint, 0)
+
+	matcher := Equals(nilInt1)
+	ExpectEq("[]", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Correct type.
+		equalsTestCase{nilInt1, true, false, ""},
+		equalsTestCase{nilInt2, true, false, ""},
+		equalsTestCase{nonNilInt, false, false, ""},
+
+		// Incorrect type.
+		equalsTestCase{nilUint, false, true, "which is not a []int"},
+		equalsTestCase{nonNilUint, false, true, "which is not a []int"},
+
+		// Other types.
+		equalsTestCase{0, false, true, "which is not a []int"},
+		equalsTestCase{bool(false), false, true, "which is not a []int"},
+		equalsTestCase{int(0), false, true, "which is not a []int"},
+		equalsTestCase{int8(0), false, true, "which is not a []int"},
+		equalsTestCase{int16(0), false, true, "which is not a []int"},
+		equalsTestCase{int32(0), false, true, "which is not a []int"},
+		equalsTestCase{int64(0), false, true, "which is not a []int"},
+		equalsTestCase{uint(0), false, true, "which is not a []int"},
+		equalsTestCase{uint8(0), false, true, "which is not a []int"},
+		equalsTestCase{uint16(0), false, true, "which is not a []int"},
+		equalsTestCase{uint32(0), false, true, "which is not a []int"},
+		equalsTestCase{uint64(0), false, true, "which is not a []int"},
+		equalsTestCase{true, false, true, "which is not a []int"},
+		equalsTestCase{[...]int{}, false, true, "which is not a []int"},
+		equalsTestCase{func() {}, false, true, "which is not a []int"},
+		equalsTestCase{map[int]int{}, false, true, "which is not a []int"},
+		equalsTestCase{"taco", false, true, "which is not a []int"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not a []int"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) NonNilSlice() {
+	nonNil := make([]int, 0)
+	f := func() { Equals(nonNil) }
+	ExpectThat(f, Panics(HasSubstr("non-nil slice")))
+}
+
+////////////////////////////////////////////////////////////////////////
+// string
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) String() {
+	partial := "taco"
+	expected := fmt.Sprintf("%s%d", partial, 1)
+
+	matcher := Equals(expected)
+	ExpectEq("taco1", matcher.Description())
+
+	type stringAlias string
+
+	cases := []equalsTestCase{
+		// Correct types.
+		equalsTestCase{"taco1", true, false, ""},
+		equalsTestCase{"taco" + "1", true, false, ""},
+		equalsTestCase{expected, true, false, ""},
+		equalsTestCase{stringAlias("taco1"), true, false, ""},
+
+		equalsTestCase{"", false, false, ""},
+		equalsTestCase{"taco", false, false, ""},
+		equalsTestCase{"taco1\x00", false, false, ""},
+		equalsTestCase{"taco2", false, false, ""},
+		equalsTestCase{stringAlias("taco2"), false, false, ""},
+
+		// Other types.
+		equalsTestCase{0, false, true, "which is not a string"},
+		equalsTestCase{bool(false), false, true, "which is not a string"},
+		equalsTestCase{int(0), false, true, "which is not a string"},
+		equalsTestCase{int8(0), false, true, "which is not a string"},
+		equalsTestCase{int16(0), false, true, "which is not a string"},
+		equalsTestCase{int32(0), false, true, "which is not a string"},
+		equalsTestCase{int64(0), false, true, "which is not a string"},
+		equalsTestCase{uint(0), false, true, "which is not a string"},
+		equalsTestCase{uint8(0), false, true, "which is not a string"},
+		equalsTestCase{uint16(0), false, true, "which is not a string"},
+		equalsTestCase{uint32(0), false, true, "which is not a string"},
+		equalsTestCase{uint64(0), false, true, "which is not a string"},
+		equalsTestCase{true, false, true, "which is not a string"},
+		equalsTestCase{[...]int{}, false, true, "which is not a string"},
+		equalsTestCase{func() {}, false, true, "which is not a string"},
+		equalsTestCase{map[int]int{}, false, true, "which is not a string"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not a string"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) StringAlias() {
+	type stringAlias string
+
+	matcher := Equals(stringAlias("taco"))
+	ExpectEq("taco", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Correct types.
+		equalsTestCase{stringAlias("taco"), true, false, ""},
+		equalsTestCase{"taco", true, false, ""},
+
+		equalsTestCase{"burrito", false, false, ""},
+		equalsTestCase{stringAlias("burrito"), false, false, ""},
+
+		// Other types.
+		equalsTestCase{0, false, true, "which is not a string"},
+		equalsTestCase{bool(false), false, true, "which is not a string"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// struct
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) Struct() {
+	type someStruct struct{ foo uint }
+	f := func() { Equals(someStruct{17}) }
+	ExpectThat(f, Panics(HasSubstr("unsupported kind struct")))
+}
+
+////////////////////////////////////////////////////////////////////////
+// unsafe.Pointer
+////////////////////////////////////////////////////////////////////////
+
+func (t *EqualsTest) NilUnsafePointer() {
+	someInt := int(17)
+
+	var nilPtr1 unsafe.Pointer
+	var nilPtr2 unsafe.Pointer
+	var nonNilPtr unsafe.Pointer = unsafe.Pointer(&someInt)
+
+	matcher := Equals(nilPtr1)
+	ExpectEq("<nil>", matcher.Description())
+
+	cases := []equalsTestCase{
+		// Correct type.
+		equalsTestCase{nilPtr1, true, false, ""},
+		equalsTestCase{nilPtr2, true, false, ""},
+		equalsTestCase{nonNilPtr, false, false, ""},
+
+		// Other types.
+		equalsTestCase{0, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{bool(false), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{int(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{int8(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{int16(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{int32(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{int64(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{uint(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{uint8(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{uint16(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{uint32(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{uint64(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{true, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{[...]int{}, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{make(chan int), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{func() {}, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{map[int]int{}, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{&someInt, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{[]int{}, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{"taco", false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not a unsafe.Pointer"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *EqualsTest) NonNilUnsafePointer() {
+	someInt := int(17)
+	someOtherInt := int(17)
+
+	var nilPtr unsafe.Pointer
+	var nonNilPtr1 unsafe.Pointer = unsafe.Pointer(&someInt)
+	var nonNilPtr2 unsafe.Pointer = unsafe.Pointer(&someOtherInt)
+
+	matcher := Equals(nonNilPtr1)
+	ExpectEq(fmt.Sprintf("%v", nonNilPtr1), matcher.Description())
+
+	cases := []equalsTestCase{
+		// Correct type.
+		equalsTestCase{nonNilPtr1, true, false, ""},
+		equalsTestCase{nonNilPtr2, false, false, ""},
+		equalsTestCase{nilPtr, false, false, ""},
+
+		// Other types.
+		equalsTestCase{0, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{bool(false), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{int(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{int8(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{int16(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{int32(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{int64(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{uint(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{uint8(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{uint16(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{uint32(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{uint64(0), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{true, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{[...]int{}, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{make(chan int), false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{func() {}, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{map[int]int{}, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{&someInt, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{[]int{}, false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{"taco", false, true, "which is not a unsafe.Pointer"},
+		equalsTestCase{equalsTestCase{}, false, true, "which is not a unsafe.Pointer"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/error.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/error.go
new file mode 100644
index 00000000000..8a078e36d86
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/error.go
@@ -0,0 +1,51 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+// Error returns a matcher that matches non-nil values implementing the
+// built-in error interface for whom the return value of Error() matches the
+// supplied matcher.
+//
+// For example:
+//
+//     err := errors.New("taco burrito")
+//
+//     Error(Equals("taco burrito"))  // matches err
+//     Error(HasSubstr("taco"))       // matches err
+//     Error(HasSubstr("enchilada"))  // doesn't match err
+//
+func Error(m Matcher) Matcher {
+	return &errorMatcher{m}
+}
+
+type errorMatcher struct {
+	wrappedMatcher Matcher
+}
+
+func (m *errorMatcher) Description() string {
+	return "error " + m.wrappedMatcher.Description()
+}
+
+func (m *errorMatcher) Matches(c interface{}) error {
+	// Make sure that c is an error.
+	e, ok := c.(error)
+	if !ok {
+		return NewFatalError("which is not an error")
+	}
+
+	// Pass on the error text to the wrapped matcher.
+	return m.wrappedMatcher.Matches(e.Error())
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/error_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/error_test.go
new file mode 100644
index 00000000000..f92167cad1d
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/error_test.go
@@ -0,0 +1,92 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	"errors"
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type ErrorTest struct {
+	matcherCalled bool
+	suppliedCandidate interface{}
+	wrappedError error
+
+	matcher Matcher
+}
+
+func init() { RegisterTestSuite(&ErrorTest{}) }
+
+func (t *ErrorTest) SetUp(i *TestInfo) {
+	wrapped := &fakeMatcher{
+		func(c interface{}) error {
+			t.matcherCalled = true
+			t.suppliedCandidate = c
+			return t.wrappedError
+		},
+		"is foo",
+	}
+
+	t.matcher = Error(wrapped)
+}
+
+func isFatal(err error) bool {
+	_, isFatal := err.(*FatalError)
+	return isFatal
+}
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *ErrorTest) Description() {
+	ExpectThat(t.matcher.Description(), Equals("error is foo"))
+}
+
+func (t *ErrorTest) CandidateIsNil() {
+	err := t.matcher.Matches(nil)
+
+	ExpectThat(t.matcherCalled, Equals(false))
+	ExpectThat(err.Error(), Equals("which is not an error"))
+	ExpectTrue(isFatal(err))
+}
+
+func (t *ErrorTest) CandidateIsString() {
+	err := t.matcher.Matches("taco")
+
+	ExpectThat(t.matcherCalled, Equals(false))
+	ExpectThat(err.Error(), Equals("which is not an error"))
+	ExpectTrue(isFatal(err))
+}
+
+func (t *ErrorTest) CallsWrappedMatcher() {
+	candidate := errors.New("taco")
+	t.matcher.Matches(candidate)
+
+	ExpectThat(t.matcherCalled, Equals(true))
+	ExpectThat(t.suppliedCandidate, Equals("taco"))
+}
+
+func (t *ErrorTest) ReturnsWrappedMatcherResult() {
+	t.wrappedError = errors.New("burrito")
+	err := t.matcher.Matches(errors.New(""))
+	ExpectThat(err, Equals(t.wrappedError))
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/greater_or_equal.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/greater_or_equal.go
new file mode 100644
index 00000000000..4b9d103a381
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/greater_or_equal.go
@@ -0,0 +1,39 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// GreaterOrEqual returns a matcher that matches integer, floating point, or
+// strings values v such that v >= x. Comparison is not defined between numeric
+// and string types, but is defined between all integer and floating point
+// types.
+//
+// x must itself be an integer, floating point, or string type; otherwise,
+// GreaterOrEqual will panic.
+func GreaterOrEqual(x interface{}) Matcher {
+	desc := fmt.Sprintf("greater than or equal to %v", x)
+
+	// Special case: make it clear that strings are strings.
+	if reflect.TypeOf(x).Kind() == reflect.String {
+		desc = fmt.Sprintf("greater than or equal to \"%s\"", x)
+	}
+
+	return transformDescription(Not(LessThan(x)), desc)
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/greater_or_equal_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/greater_or_equal_test.go
new file mode 100644
index 00000000000..f5e29d1ce59
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/greater_or_equal_test.go
@@ -0,0 +1,1101 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	"math"
+
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type GreaterOrEqualTest struct {
+}
+
+func init() { RegisterTestSuite(&GreaterOrEqualTest{}) }
+
+type geTestCase struct {
+	candidate      interface{}
+	expectedResult bool
+	shouldBeFatal  bool
+	expectedError  string
+}
+
+func (t *GreaterOrEqualTest) checkTestCases(matcher Matcher, cases []geTestCase) {
+	for i, c := range cases {
+		err := matcher.Matches(c.candidate)
+
+		ExpectThat(
+			(err == nil),
+			Equals(c.expectedResult),
+			"Case %d (candidate %v)",
+			i,
+			c.candidate)
+
+		if err == nil {
+			continue
+		}
+
+		_, isFatal := err.(*FatalError)
+		ExpectEq(
+			c.shouldBeFatal,
+			isFatal,
+			"Case %d (candidate %v)",
+			i,
+			c.candidate)
+
+		ExpectThat(
+			err,
+			Error(Equals(c.expectedError)),
+			"Case %d (candidate %v)",
+			i,
+			c.candidate)
+	}
+}
+
+////////////////////////////////////////////////////////////////////////
+// Integer literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *GreaterOrEqualTest) IntegerCandidateBadTypes() {
+	matcher := GreaterOrEqual(int(-150))
+
+	cases := []geTestCase{
+		geTestCase{true, false, true, "which is not comparable"},
+		geTestCase{complex64(-151), false, true, "which is not comparable"},
+		geTestCase{complex128(-151), false, true, "which is not comparable"},
+		geTestCase{[...]int{-151}, false, true, "which is not comparable"},
+		geTestCase{make(chan int), false, true, "which is not comparable"},
+		geTestCase{func() {}, false, true, "which is not comparable"},
+		geTestCase{map[int]int{}, false, true, "which is not comparable"},
+		geTestCase{&geTestCase{}, false, true, "which is not comparable"},
+		geTestCase{make([]int, 0), false, true, "which is not comparable"},
+		geTestCase{"-151", false, true, "which is not comparable"},
+		geTestCase{geTestCase{}, false, true, "which is not comparable"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterOrEqualTest) FloatCandidateBadTypes() {
+	matcher := GreaterOrEqual(float32(-150))
+
+	cases := []geTestCase{
+		geTestCase{true, false, true, "which is not comparable"},
+		geTestCase{complex64(-151), false, true, "which is not comparable"},
+		geTestCase{complex128(-151), false, true, "which is not comparable"},
+		geTestCase{[...]int{-151}, false, true, "which is not comparable"},
+		geTestCase{make(chan int), false, true, "which is not comparable"},
+		geTestCase{func() {}, false, true, "which is not comparable"},
+		geTestCase{map[int]int{}, false, true, "which is not comparable"},
+		geTestCase{&geTestCase{}, false, true, "which is not comparable"},
+		geTestCase{make([]int, 0), false, true, "which is not comparable"},
+		geTestCase{"-151", false, true, "which is not comparable"},
+		geTestCase{geTestCase{}, false, true, "which is not comparable"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterOrEqualTest) StringCandidateBadTypes() {
+	matcher := GreaterOrEqual("17")
+
+	cases := []geTestCase{
+		geTestCase{true, false, true, "which is not comparable"},
+		geTestCase{int(0), false, true, "which is not comparable"},
+		geTestCase{int8(0), false, true, "which is not comparable"},
+		geTestCase{int16(0), false, true, "which is not comparable"},
+		geTestCase{int32(0), false, true, "which is not comparable"},
+		geTestCase{int64(0), false, true, "which is not comparable"},
+		geTestCase{uint(0), false, true, "which is not comparable"},
+		geTestCase{uint8(0), false, true, "which is not comparable"},
+		geTestCase{uint16(0), false, true, "which is not comparable"},
+		geTestCase{uint32(0), false, true, "which is not comparable"},
+		geTestCase{uint64(0), false, true, "which is not comparable"},
+		geTestCase{float32(0), false, true, "which is not comparable"},
+		geTestCase{float64(0), false, true, "which is not comparable"},
+		geTestCase{complex64(-151), false, true, "which is not comparable"},
+		geTestCase{complex128(-151), false, true, "which is not comparable"},
+		geTestCase{[...]int{-151}, false, true, "which is not comparable"},
+		geTestCase{make(chan int), false, true, "which is not comparable"},
+		geTestCase{func() {}, false, true, "which is not comparable"},
+		geTestCase{map[int]int{}, false, true, "which is not comparable"},
+		geTestCase{&geTestCase{}, false, true, "which is not comparable"},
+		geTestCase{make([]int, 0), false, true, "which is not comparable"},
+		geTestCase{geTestCase{}, false, true, "which is not comparable"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterOrEqualTest) BadArgument() {
+	panicked := false
+
+	defer func() {
+		ExpectThat(panicked, Equals(true))
+	}()
+
+	defer func() {
+		if r := recover(); r != nil {
+			panicked = true
+		}
+	}()
+
+	GreaterOrEqual(complex128(0))
+}
+
+////////////////////////////////////////////////////////////////////////
+// Integer literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *GreaterOrEqualTest) NegativeIntegerLiteral() {
+	matcher := GreaterOrEqual(-150)
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to -150"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		// Signed integers.
+		geTestCase{-(1 << 30), false, false, ""},
+		geTestCase{-151, false, false, ""},
+		geTestCase{-150, true, false, ""},
+		geTestCase{0, true, false, ""},
+		geTestCase{17, true, false, ""},
+
+		geTestCase{int(-(1 << 30)), false, false, ""},
+		geTestCase{int(-151), false, false, ""},
+		geTestCase{int(-150), true, false, ""},
+		geTestCase{int(0), true, false, ""},
+		geTestCase{int(17), true, false, ""},
+
+		geTestCase{int8(-127), true, false, ""},
+		geTestCase{int8(0), true, false, ""},
+		geTestCase{int8(17), true, false, ""},
+
+		geTestCase{int16(-(1 << 14)), false, false, ""},
+		geTestCase{int16(-151), false, false, ""},
+		geTestCase{int16(-150), true, false, ""},
+		geTestCase{int16(0), true, false, ""},
+		geTestCase{int16(17), true, false, ""},
+
+		geTestCase{int32(-(1 << 30)), false, false, ""},
+		geTestCase{int32(-151), false, false, ""},
+		geTestCase{int32(-150), true, false, ""},
+		geTestCase{int32(0), true, false, ""},
+		geTestCase{int32(17), true, false, ""},
+
+		geTestCase{int64(-(1 << 30)), false, false, ""},
+		geTestCase{int64(-151), false, false, ""},
+		geTestCase{int64(-150), true, false, ""},
+		geTestCase{int64(0), true, false, ""},
+		geTestCase{int64(17), true, false, ""},
+
+		// Unsigned integers.
+		geTestCase{uint((1 << 32) - 151), true, false, ""},
+		geTestCase{uint(0), true, false, ""},
+		geTestCase{uint(17), true, false, ""},
+
+		geTestCase{uint8(0), true, false, ""},
+		geTestCase{uint8(17), true, false, ""},
+		geTestCase{uint8(253), true, false, ""},
+
+		geTestCase{uint16((1 << 16) - 151), true, false, ""},
+		geTestCase{uint16(0), true, false, ""},
+		geTestCase{uint16(17), true, false, ""},
+
+		geTestCase{uint32((1 << 32) - 151), true, false, ""},
+		geTestCase{uint32(0), true, false, ""},
+		geTestCase{uint32(17), true, false, ""},
+
+		geTestCase{uint64((1 << 64) - 151), true, false, ""},
+		geTestCase{uint64(0), true, false, ""},
+		geTestCase{uint64(17), true, false, ""},
+
+		geTestCase{uintptr((1 << 64) - 151), true, false, ""},
+		geTestCase{uintptr(0), true, false, ""},
+		geTestCase{uintptr(17), true, false, ""},
+
+		// Floating point.
+		geTestCase{float32(-(1 << 30)), false, false, ""},
+		geTestCase{float32(-151), false, false, ""},
+		geTestCase{float32(-150.1), false, false, ""},
+		geTestCase{float32(-150), true, false, ""},
+		geTestCase{float32(-149.9), true, false, ""},
+		geTestCase{float32(0), true, false, ""},
+		geTestCase{float32(17), true, false, ""},
+		geTestCase{float32(160), true, false, ""},
+
+		geTestCase{float64(-(1 << 30)), false, false, ""},
+		geTestCase{float64(-151), false, false, ""},
+		geTestCase{float64(-150.1), false, false, ""},
+		geTestCase{float64(-150), true, false, ""},
+		geTestCase{float64(-149.9), true, false, ""},
+		geTestCase{float64(0), true, false, ""},
+		geTestCase{float64(17), true, false, ""},
+		geTestCase{float64(160), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterOrEqualTest) ZeroIntegerLiteral() {
+	matcher := GreaterOrEqual(0)
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to 0"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		// Signed integers.
+		geTestCase{-(1 << 30), false, false, ""},
+		geTestCase{-1, false, false, ""},
+		geTestCase{0, true, false, ""},
+		geTestCase{1, true, false, ""},
+		geTestCase{17, true, false, ""},
+		geTestCase{(1 << 30), true, false, ""},
+
+		geTestCase{int(-(1 << 30)), false, false, ""},
+		geTestCase{int(-1), false, false, ""},
+		geTestCase{int(0), true, false, ""},
+		geTestCase{int(1), true, false, ""},
+		geTestCase{int(17), true, false, ""},
+
+		geTestCase{int8(-1), false, false, ""},
+		geTestCase{int8(0), true, false, ""},
+		geTestCase{int8(1), true, false, ""},
+
+		geTestCase{int16(-(1 << 14)), false, false, ""},
+		geTestCase{int16(-1), false, false, ""},
+		geTestCase{int16(0), true, false, ""},
+		geTestCase{int16(1), true, false, ""},
+		geTestCase{int16(17), true, false, ""},
+
+		geTestCase{int32(-(1 << 30)), false, false, ""},
+		geTestCase{int32(-1), false, false, ""},
+		geTestCase{int32(0), true, false, ""},
+		geTestCase{int32(1), true, false, ""},
+		geTestCase{int32(17), true, false, ""},
+
+		geTestCase{int64(-(1 << 30)), false, false, ""},
+		geTestCase{int64(-1), false, false, ""},
+		geTestCase{int64(0), true, false, ""},
+		geTestCase{int64(1), true, false, ""},
+		geTestCase{int64(17), true, false, ""},
+
+		// Unsigned integers.
+		geTestCase{uint((1 << 32) - 1), true, false, ""},
+		geTestCase{uint(0), true, false, ""},
+		geTestCase{uint(17), true, false, ""},
+
+		geTestCase{uint8(0), true, false, ""},
+		geTestCase{uint8(17), true, false, ""},
+		geTestCase{uint8(253), true, false, ""},
+
+		geTestCase{uint16((1 << 16) - 1), true, false, ""},
+		geTestCase{uint16(0), true, false, ""},
+		geTestCase{uint16(17), true, false, ""},
+
+		geTestCase{uint32((1 << 32) - 1), true, false, ""},
+		geTestCase{uint32(0), true, false, ""},
+		geTestCase{uint32(17), true, false, ""},
+
+		geTestCase{uint64((1 << 64) - 1), true, false, ""},
+		geTestCase{uint64(0), true, false, ""},
+		geTestCase{uint64(17), true, false, ""},
+
+		geTestCase{uintptr((1 << 64) - 1), true, false, ""},
+		geTestCase{uintptr(0), true, false, ""},
+		geTestCase{uintptr(17), true, false, ""},
+
+		// Floating point.
+		geTestCase{float32(-(1 << 30)), false, false, ""},
+		geTestCase{float32(-1), false, false, ""},
+		geTestCase{float32(-0.1), false, false, ""},
+		geTestCase{float32(-0.0), true, false, ""},
+		geTestCase{float32(0), true, false, ""},
+		geTestCase{float32(0.1), true, false, ""},
+		geTestCase{float32(17), true, false, ""},
+		geTestCase{float32(160), true, false, ""},
+
+		geTestCase{float64(-(1 << 30)), false, false, ""},
+		geTestCase{float64(-1), false, false, ""},
+		geTestCase{float64(-0.1), false, false, ""},
+		geTestCase{float64(-0), true, false, ""},
+		geTestCase{float64(0), true, false, ""},
+		geTestCase{float64(17), true, false, ""},
+		geTestCase{float64(160), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterOrEqualTest) PositiveIntegerLiteral() {
+	matcher := GreaterOrEqual(150)
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to 150"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		// Signed integers.
+		geTestCase{-1, false, false, ""},
+		geTestCase{149, false, false, ""},
+		geTestCase{150, true, false, ""},
+		geTestCase{151, true, false, ""},
+
+		geTestCase{int(-1), false, false, ""},
+		geTestCase{int(149), false, false, ""},
+		geTestCase{int(150), true, false, ""},
+		geTestCase{int(151), true, false, ""},
+
+		geTestCase{int8(-1), false, false, ""},
+		geTestCase{int8(0), false, false, ""},
+		geTestCase{int8(17), false, false, ""},
+		geTestCase{int8(127), false, false, ""},
+
+		geTestCase{int16(-1), false, false, ""},
+		geTestCase{int16(149), false, false, ""},
+		geTestCase{int16(150), true, false, ""},
+		geTestCase{int16(151), true, false, ""},
+
+		geTestCase{int32(-1), false, false, ""},
+		geTestCase{int32(149), false, false, ""},
+		geTestCase{int32(150), true, false, ""},
+		geTestCase{int32(151), true, false, ""},
+
+		geTestCase{int64(-1), false, false, ""},
+		geTestCase{int64(149), false, false, ""},
+		geTestCase{int64(150), true, false, ""},
+		geTestCase{int64(151), true, false, ""},
+
+		// Unsigned integers.
+		geTestCase{uint(0), false, false, ""},
+		geTestCase{uint(149), false, false, ""},
+		geTestCase{uint(150), true, false, ""},
+		geTestCase{uint(151), true, false, ""},
+
+		geTestCase{uint8(0), false, false, ""},
+		geTestCase{uint8(127), false, false, ""},
+
+		geTestCase{uint16(0), false, false, ""},
+		geTestCase{uint16(149), false, false, ""},
+		geTestCase{uint16(150), true, false, ""},
+		geTestCase{uint16(151), true, false, ""},
+
+		geTestCase{uint32(0), false, false, ""},
+		geTestCase{uint32(149), false, false, ""},
+		geTestCase{uint32(150), true, false, ""},
+		geTestCase{uint32(151), true, false, ""},
+
+		geTestCase{uint64(0), false, false, ""},
+		geTestCase{uint64(149), false, false, ""},
+		geTestCase{uint64(150), true, false, ""},
+		geTestCase{uint64(151), true, false, ""},
+
+		geTestCase{uintptr(0), false, false, ""},
+		geTestCase{uintptr(149), false, false, ""},
+		geTestCase{uintptr(150), true, false, ""},
+		geTestCase{uintptr(151), true, false, ""},
+
+		// Floating point.
+		geTestCase{float32(-1), false, false, ""},
+		geTestCase{float32(149), false, false, ""},
+		geTestCase{float32(149.9), false, false, ""},
+		geTestCase{float32(150), true, false, ""},
+		geTestCase{float32(150.1), true, false, ""},
+		geTestCase{float32(151), true, false, ""},
+
+		geTestCase{float64(-1), false, false, ""},
+		geTestCase{float64(149), false, false, ""},
+		geTestCase{float64(149.9), false, false, ""},
+		geTestCase{float64(150), true, false, ""},
+		geTestCase{float64(150.1), true, false, ""},
+		geTestCase{float64(151), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Float literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *GreaterOrEqualTest) NegativeFloatLiteral() {
+	matcher := GreaterOrEqual(-150.1)
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to -150.1"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		// Signed integers.
+		geTestCase{-(1 << 30), false, false, ""},
+		geTestCase{-151, false, false, ""},
+		geTestCase{-150, true, false, ""},
+		geTestCase{0, true, false, ""},
+		geTestCase{17, true, false, ""},
+
+		geTestCase{int(-(1 << 30)), false, false, ""},
+		geTestCase{int(-151), false, false, ""},
+		geTestCase{int(-150), true, false, ""},
+		geTestCase{int(0), true, false, ""},
+		geTestCase{int(17), true, false, ""},
+
+		geTestCase{int8(-127), true, false, ""},
+		geTestCase{int8(0), true, false, ""},
+		geTestCase{int8(17), true, false, ""},
+
+		geTestCase{int16(-(1 << 14)), false, false, ""},
+		geTestCase{int16(-151), false, false, ""},
+		geTestCase{int16(-150), true, false, ""},
+		geTestCase{int16(0), true, false, ""},
+		geTestCase{int16(17), true, false, ""},
+
+		geTestCase{int32(-(1 << 30)), false, false, ""},
+		geTestCase{int32(-151), false, false, ""},
+		geTestCase{int32(-150), true, false, ""},
+		geTestCase{int32(0), true, false, ""},
+		geTestCase{int32(17), true, false, ""},
+
+		geTestCase{int64(-(1 << 30)), false, false, ""},
+		geTestCase{int64(-151), false, false, ""},
+		geTestCase{int64(-150), true, false, ""},
+		geTestCase{int64(0), true, false, ""},
+		geTestCase{int64(17), true, false, ""},
+
+		// Unsigned integers.
+		geTestCase{uint((1 << 32) - 151), true, false, ""},
+		geTestCase{uint(0), true, false, ""},
+		geTestCase{uint(17), true, false, ""},
+
+		geTestCase{uint8(0), true, false, ""},
+		geTestCase{uint8(17), true, false, ""},
+		geTestCase{uint8(253), true, false, ""},
+
+		geTestCase{uint16((1 << 16) - 151), true, false, ""},
+		geTestCase{uint16(0), true, false, ""},
+		geTestCase{uint16(17), true, false, ""},
+
+		geTestCase{uint32((1 << 32) - 151), true, false, ""},
+		geTestCase{uint32(0), true, false, ""},
+		geTestCase{uint32(17), true, false, ""},
+
+		geTestCase{uint64((1 << 64) - 151), true, false, ""},
+		geTestCase{uint64(0), true, false, ""},
+		geTestCase{uint64(17), true, false, ""},
+
+		geTestCase{uintptr((1 << 64) - 151), true, false, ""},
+		geTestCase{uintptr(0), true, false, ""},
+		geTestCase{uintptr(17), true, false, ""},
+
+		// Floating point.
+		geTestCase{float32(-(1 << 30)), false, false, ""},
+		geTestCase{float32(-151), false, false, ""},
+		geTestCase{float32(-150.2), false, false, ""},
+		geTestCase{float32(-150.1), true, false, ""},
+		geTestCase{float32(-150), true, false, ""},
+		geTestCase{float32(0), true, false, ""},
+		geTestCase{float32(17), true, false, ""},
+		geTestCase{float32(160), true, false, ""},
+
+		geTestCase{float64(-(1 << 30)), false, false, ""},
+		geTestCase{float64(-151), false, false, ""},
+		geTestCase{float64(-150.2), false, false, ""},
+		geTestCase{float64(-150.1), true, false, ""},
+		geTestCase{float64(-150), true, false, ""},
+		geTestCase{float64(0), true, false, ""},
+		geTestCase{float64(17), true, false, ""},
+		geTestCase{float64(160), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterOrEqualTest) PositiveFloatLiteral() {
+	matcher := GreaterOrEqual(149.9)
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to 149.9"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		// Signed integers.
+		geTestCase{-1, false, false, ""},
+		geTestCase{149, false, false, ""},
+		geTestCase{150, true, false, ""},
+		geTestCase{151, true, false, ""},
+
+		geTestCase{int(-1), false, false, ""},
+		geTestCase{int(149), false, false, ""},
+		geTestCase{int(150), true, false, ""},
+		geTestCase{int(151), true, false, ""},
+
+		geTestCase{int8(-1), false, false, ""},
+		geTestCase{int8(0), false, false, ""},
+		geTestCase{int8(17), false, false, ""},
+		geTestCase{int8(127), false, false, ""},
+
+		geTestCase{int16(-1), false, false, ""},
+		geTestCase{int16(149), false, false, ""},
+		geTestCase{int16(150), true, false, ""},
+		geTestCase{int16(151), true, false, ""},
+
+		geTestCase{int32(-1), false, false, ""},
+		geTestCase{int32(149), false, false, ""},
+		geTestCase{int32(150), true, false, ""},
+		geTestCase{int32(151), true, false, ""},
+
+		geTestCase{int64(-1), false, false, ""},
+		geTestCase{int64(149), false, false, ""},
+		geTestCase{int64(150), true, false, ""},
+		geTestCase{int64(151), true, false, ""},
+
+		// Unsigned integers.
+		geTestCase{uint(0), false, false, ""},
+		geTestCase{uint(149), false, false, ""},
+		geTestCase{uint(150), true, false, ""},
+		geTestCase{uint(151), true, false, ""},
+
+		geTestCase{uint8(0), false, false, ""},
+		geTestCase{uint8(127), false, false, ""},
+
+		geTestCase{uint16(0), false, false, ""},
+		geTestCase{uint16(149), false, false, ""},
+		geTestCase{uint16(150), true, false, ""},
+		geTestCase{uint16(151), true, false, ""},
+
+		geTestCase{uint32(0), false, false, ""},
+		geTestCase{uint32(149), false, false, ""},
+		geTestCase{uint32(150), true, false, ""},
+		geTestCase{uint32(151), true, false, ""},
+
+		geTestCase{uint64(0), false, false, ""},
+		geTestCase{uint64(149), false, false, ""},
+		geTestCase{uint64(150), true, false, ""},
+		geTestCase{uint64(151), true, false, ""},
+
+		geTestCase{uintptr(0), false, false, ""},
+		geTestCase{uintptr(149), false, false, ""},
+		geTestCase{uintptr(150), true, false, ""},
+		geTestCase{uintptr(151), true, false, ""},
+
+		// Floating point.
+		geTestCase{float32(-1), false, false, ""},
+		geTestCase{float32(149), false, false, ""},
+		geTestCase{float32(149.8), false, false, ""},
+		geTestCase{float32(149.9), true, false, ""},
+		geTestCase{float32(150), true, false, ""},
+		geTestCase{float32(151), true, false, ""},
+
+		geTestCase{float64(-1), false, false, ""},
+		geTestCase{float64(149), false, false, ""},
+		geTestCase{float64(149.8), false, false, ""},
+		geTestCase{float64(149.9), true, false, ""},
+		geTestCase{float64(150), true, false, ""},
+		geTestCase{float64(151), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Subtle cases
+////////////////////////////////////////////////////////////////////////
+
+func (t *GreaterOrEqualTest) Int64NotExactlyRepresentableBySinglePrecision() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := GreaterOrEqual(int64(kTwoTo25 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to 33554433"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		// Signed integers.
+		geTestCase{-1, false, false, ""},
+		geTestCase{kTwoTo25 + 0, false, false, ""},
+		geTestCase{kTwoTo25 + 1, true, false, ""},
+		geTestCase{kTwoTo25 + 2, true, false, ""},
+
+		geTestCase{int(-1), false, false, ""},
+		geTestCase{int(kTwoTo25 + 0), false, false, ""},
+		geTestCase{int(kTwoTo25 + 1), true, false, ""},
+		geTestCase{int(kTwoTo25 + 2), true, false, ""},
+
+		geTestCase{int8(-1), false, false, ""},
+		geTestCase{int8(127), false, false, ""},
+
+		geTestCase{int16(-1), false, false, ""},
+		geTestCase{int16(0), false, false, ""},
+		geTestCase{int16(32767), false, false, ""},
+
+		geTestCase{int32(-1), false, false, ""},
+		geTestCase{int32(kTwoTo25 + 0), false, false, ""},
+		geTestCase{int32(kTwoTo25 + 1), true, false, ""},
+		geTestCase{int32(kTwoTo25 + 2), true, false, ""},
+
+		geTestCase{int64(-1), false, false, ""},
+		geTestCase{int64(kTwoTo25 + 0), false, false, ""},
+		geTestCase{int64(kTwoTo25 + 1), true, false, ""},
+		geTestCase{int64(kTwoTo25 + 2), true, false, ""},
+
+		// Unsigned integers.
+		geTestCase{uint(0), false, false, ""},
+		geTestCase{uint(kTwoTo25 + 0), false, false, ""},
+		geTestCase{uint(kTwoTo25 + 1), true, false, ""},
+		geTestCase{uint(kTwoTo25 + 2), true, false, ""},
+
+		geTestCase{uint8(0), false, false, ""},
+		geTestCase{uint8(255), false, false, ""},
+
+		geTestCase{uint16(0), false, false, ""},
+		geTestCase{uint16(65535), false, false, ""},
+
+		geTestCase{uint32(0), false, false, ""},
+		geTestCase{uint32(kTwoTo25 + 0), false, false, ""},
+		geTestCase{uint32(kTwoTo25 + 1), true, false, ""},
+		geTestCase{uint32(kTwoTo25 + 2), true, false, ""},
+
+		geTestCase{uint64(0), false, false, ""},
+		geTestCase{uint64(kTwoTo25 + 0), false, false, ""},
+		geTestCase{uint64(kTwoTo25 + 1), true, false, ""},
+		geTestCase{uint64(kTwoTo25 + 2), true, false, ""},
+
+		geTestCase{uintptr(0), false, false, ""},
+		geTestCase{uintptr(kTwoTo25 + 0), false, false, ""},
+		geTestCase{uintptr(kTwoTo25 + 1), true, false, ""},
+		geTestCase{uintptr(kTwoTo25 + 2), true, false, ""},
+
+		// Floating point.
+		geTestCase{float32(-1), false, false, ""},
+		geTestCase{float32(kTwoTo25 - 2), false, false, ""},
+		geTestCase{float32(kTwoTo25 - 1), true, false, ""},
+		geTestCase{float32(kTwoTo25 + 0), true, false, ""},
+		geTestCase{float32(kTwoTo25 + 1), true, false, ""},
+		geTestCase{float32(kTwoTo25 + 2), true, false, ""},
+		geTestCase{float32(kTwoTo25 + 3), true, false, ""},
+
+		geTestCase{float64(-1), false, false, ""},
+		geTestCase{float64(kTwoTo25 - 2), false, false, ""},
+		geTestCase{float64(kTwoTo25 - 1), false, false, ""},
+		geTestCase{float64(kTwoTo25 + 0), false, false, ""},
+		geTestCase{float64(kTwoTo25 + 1), true, false, ""},
+		geTestCase{float64(kTwoTo25 + 2), true, false, ""},
+		geTestCase{float64(kTwoTo25 + 3), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterOrEqualTest) Int64NotExactlyRepresentableByDoublePrecision() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := GreaterOrEqual(int64(kTwoTo54 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to 18014398509481985"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		// Signed integers.
+		geTestCase{-1, false, false, ""},
+		geTestCase{1 << 30, false, false, ""},
+
+		geTestCase{int(-1), false, false, ""},
+		geTestCase{int(math.MaxInt32), false, false, ""},
+
+		geTestCase{int8(-1), false, false, ""},
+		geTestCase{int8(127), false, false, ""},
+
+		geTestCase{int16(-1), false, false, ""},
+		geTestCase{int16(0), false, false, ""},
+		geTestCase{int16(32767), false, false, ""},
+
+		geTestCase{int32(-1), false, false, ""},
+		geTestCase{int32(math.MaxInt32), false, false, ""},
+
+		geTestCase{int64(-1), false, false, ""},
+		geTestCase{int64(kTwoTo54 - 1), false, false, ""},
+		geTestCase{int64(kTwoTo54 + 0), false, false, ""},
+		geTestCase{int64(kTwoTo54 + 1), true, false, ""},
+		geTestCase{int64(kTwoTo54 + 2), true, false, ""},
+
+		// Unsigned integers.
+		geTestCase{uint(0), false, false, ""},
+		geTestCase{uint(math.MaxUint32), false, false, ""},
+
+		geTestCase{uint8(0), false, false, ""},
+		geTestCase{uint8(255), false, false, ""},
+
+		geTestCase{uint16(0), false, false, ""},
+		geTestCase{uint16(65535), false, false, ""},
+
+		geTestCase{uint32(0), false, false, ""},
+		geTestCase{uint32(math.MaxUint32), false, false, ""},
+
+		geTestCase{uint64(0), false, false, ""},
+		geTestCase{uint64(kTwoTo54 - 1), false, false, ""},
+		geTestCase{uint64(kTwoTo54 + 0), false, false, ""},
+		geTestCase{uint64(kTwoTo54 + 1), true, false, ""},
+		geTestCase{uint64(kTwoTo54 + 2), true, false, ""},
+
+		geTestCase{uintptr(0), false, false, ""},
+		geTestCase{uintptr(kTwoTo54 - 1), false, false, ""},
+		geTestCase{uintptr(kTwoTo54 + 0), false, false, ""},
+		geTestCase{uintptr(kTwoTo54 + 1), true, false, ""},
+		geTestCase{uintptr(kTwoTo54 + 2), true, false, ""},
+
+		// Floating point.
+		geTestCase{float64(-1), false, false, ""},
+		geTestCase{float64(kTwoTo54 - 2), false, false, ""},
+		geTestCase{float64(kTwoTo54 - 1), true, false, ""},
+		geTestCase{float64(kTwoTo54 + 0), true, false, ""},
+		geTestCase{float64(kTwoTo54 + 1), true, false, ""},
+		geTestCase{float64(kTwoTo54 + 2), true, false, ""},
+		geTestCase{float64(kTwoTo54 + 3), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterOrEqualTest) Uint64NotExactlyRepresentableBySinglePrecision() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := GreaterOrEqual(uint64(kTwoTo25 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to 33554433"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		// Signed integers.
+		geTestCase{-1, false, false, ""},
+		geTestCase{kTwoTo25 + 0, false, false, ""},
+		geTestCase{kTwoTo25 + 1, true, false, ""},
+		geTestCase{kTwoTo25 + 2, true, false, ""},
+
+		geTestCase{int(-1), false, false, ""},
+		geTestCase{int(kTwoTo25 + 0), false, false, ""},
+		geTestCase{int(kTwoTo25 + 1), true, false, ""},
+		geTestCase{int(kTwoTo25 + 2), true, false, ""},
+
+		geTestCase{int8(-1), false, false, ""},
+		geTestCase{int8(127), false, false, ""},
+
+		geTestCase{int16(-1), false, false, ""},
+		geTestCase{int16(0), false, false, ""},
+		geTestCase{int16(32767), false, false, ""},
+
+		geTestCase{int32(-1), false, false, ""},
+		geTestCase{int32(kTwoTo25 + 0), false, false, ""},
+		geTestCase{int32(kTwoTo25 + 1), true, false, ""},
+		geTestCase{int32(kTwoTo25 + 2), true, false, ""},
+
+		geTestCase{int64(-1), false, false, ""},
+		geTestCase{int64(kTwoTo25 + 0), false, false, ""},
+		geTestCase{int64(kTwoTo25 + 1), true, false, ""},
+		geTestCase{int64(kTwoTo25 + 2), true, false, ""},
+
+		// Unsigned integers.
+		geTestCase{uint(0), false, false, ""},
+		geTestCase{uint(kTwoTo25 + 0), false, false, ""},
+		geTestCase{uint(kTwoTo25 + 1), true, false, ""},
+		geTestCase{uint(kTwoTo25 + 2), true, false, ""},
+
+		geTestCase{uint8(0), false, false, ""},
+		geTestCase{uint8(255), false, false, ""},
+
+		geTestCase{uint16(0), false, false, ""},
+		geTestCase{uint16(65535), false, false, ""},
+
+		geTestCase{uint32(0), false, false, ""},
+		geTestCase{uint32(kTwoTo25 + 0), false, false, ""},
+		geTestCase{uint32(kTwoTo25 + 1), true, false, ""},
+		geTestCase{uint32(kTwoTo25 + 2), true, false, ""},
+
+		geTestCase{uint64(0), false, false, ""},
+		geTestCase{uint64(kTwoTo25 + 0), false, false, ""},
+		geTestCase{uint64(kTwoTo25 + 1), true, false, ""},
+		geTestCase{uint64(kTwoTo25 + 2), true, false, ""},
+
+		geTestCase{uintptr(0), false, false, ""},
+		geTestCase{uintptr(kTwoTo25 + 0), false, false, ""},
+		geTestCase{uintptr(kTwoTo25 + 1), true, false, ""},
+		geTestCase{uintptr(kTwoTo25 + 2), true, false, ""},
+
+		// Floating point.
+		geTestCase{float32(-1), false, false, ""},
+		geTestCase{float32(kTwoTo25 - 2), false, false, ""},
+		geTestCase{float32(kTwoTo25 - 1), true, false, ""},
+		geTestCase{float32(kTwoTo25 + 0), true, false, ""},
+		geTestCase{float32(kTwoTo25 + 1), true, false, ""},
+		geTestCase{float32(kTwoTo25 + 2), true, false, ""},
+		geTestCase{float32(kTwoTo25 + 3), true, false, ""},
+
+		geTestCase{float64(-1), false, false, ""},
+		geTestCase{float64(kTwoTo25 - 2), false, false, ""},
+		geTestCase{float64(kTwoTo25 - 1), false, false, ""},
+		geTestCase{float64(kTwoTo25 + 0), false, false, ""},
+		geTestCase{float64(kTwoTo25 + 1), true, false, ""},
+		geTestCase{float64(kTwoTo25 + 2), true, false, ""},
+		geTestCase{float64(kTwoTo25 + 3), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterOrEqualTest) Uint64NotExactlyRepresentableByDoublePrecision() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := GreaterOrEqual(uint64(kTwoTo54 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to 18014398509481985"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		// Signed integers.
+		geTestCase{-1, false, false, ""},
+		geTestCase{1 << 30, false, false, ""},
+
+		geTestCase{int(-1), false, false, ""},
+		geTestCase{int(math.MaxInt32), false, false, ""},
+
+		geTestCase{int8(-1), false, false, ""},
+		geTestCase{int8(127), false, false, ""},
+
+		geTestCase{int16(-1), false, false, ""},
+		geTestCase{int16(0), false, false, ""},
+		geTestCase{int16(32767), false, false, ""},
+
+		geTestCase{int32(-1), false, false, ""},
+		geTestCase{int32(math.MaxInt32), false, false, ""},
+
+		geTestCase{int64(-1), false, false, ""},
+		geTestCase{int64(kTwoTo54 - 1), false, false, ""},
+		geTestCase{int64(kTwoTo54 + 0), false, false, ""},
+		geTestCase{int64(kTwoTo54 + 1), true, false, ""},
+		geTestCase{int64(kTwoTo54 + 2), true, false, ""},
+
+		// Unsigned integers.
+		geTestCase{uint(0), false, false, ""},
+		geTestCase{uint(math.MaxUint32), false, false, ""},
+
+		geTestCase{uint8(0), false, false, ""},
+		geTestCase{uint8(255), false, false, ""},
+
+		geTestCase{uint16(0), false, false, ""},
+		geTestCase{uint16(65535), false, false, ""},
+
+		geTestCase{uint32(0), false, false, ""},
+		geTestCase{uint32(math.MaxUint32), false, false, ""},
+
+		geTestCase{uint64(0), false, false, ""},
+		geTestCase{uint64(kTwoTo54 - 1), false, false, ""},
+		geTestCase{uint64(kTwoTo54 + 0), false, false, ""},
+		geTestCase{uint64(kTwoTo54 + 1), true, false, ""},
+		geTestCase{uint64(kTwoTo54 + 2), true, false, ""},
+
+		geTestCase{uintptr(0), false, false, ""},
+		geTestCase{uintptr(kTwoTo54 - 1), false, false, ""},
+		geTestCase{uintptr(kTwoTo54 + 0), false, false, ""},
+		geTestCase{uintptr(kTwoTo54 + 1), true, false, ""},
+		geTestCase{uintptr(kTwoTo54 + 2), true, false, ""},
+
+		// Floating point.
+		geTestCase{float64(-1), false, false, ""},
+		geTestCase{float64(kTwoTo54 - 2), false, false, ""},
+		geTestCase{float64(kTwoTo54 - 1), true, false, ""},
+		geTestCase{float64(kTwoTo54 + 0), true, false, ""},
+		geTestCase{float64(kTwoTo54 + 1), true, false, ""},
+		geTestCase{float64(kTwoTo54 + 2), true, false, ""},
+		geTestCase{float64(kTwoTo54 + 3), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterOrEqualTest) Float32AboveExactIntegerRange() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := GreaterOrEqual(float32(kTwoTo25 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to 3.3554432e+07"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		// Signed integers.
+		geTestCase{int64(-1), false, false, ""},
+		geTestCase{int64(kTwoTo25 - 2), false, false, ""},
+		geTestCase{int64(kTwoTo25 - 1), true, false, ""},
+		geTestCase{int64(kTwoTo25 + 0), true, false, ""},
+		geTestCase{int64(kTwoTo25 + 1), true, false, ""},
+		geTestCase{int64(kTwoTo25 + 2), true, false, ""},
+		geTestCase{int64(kTwoTo25 + 3), true, false, ""},
+
+		// Unsigned integers.
+		geTestCase{uint64(0), false, false, ""},
+		geTestCase{uint64(kTwoTo25 - 2), false, false, ""},
+		geTestCase{uint64(kTwoTo25 - 1), true, false, ""},
+		geTestCase{uint64(kTwoTo25 + 0), true, false, ""},
+		geTestCase{uint64(kTwoTo25 + 1), true, false, ""},
+		geTestCase{uint64(kTwoTo25 + 2), true, false, ""},
+		geTestCase{uint64(kTwoTo25 + 3), true, false, ""},
+
+		// Floating point.
+		geTestCase{float32(-1), false, false, ""},
+		geTestCase{float32(kTwoTo25 - 2), false, false, ""},
+		geTestCase{float32(kTwoTo25 - 1), true, false, ""},
+		geTestCase{float32(kTwoTo25 + 0), true, false, ""},
+		geTestCase{float32(kTwoTo25 + 1), true, false, ""},
+		geTestCase{float32(kTwoTo25 + 2), true, false, ""},
+		geTestCase{float32(kTwoTo25 + 3), true, false, ""},
+
+		geTestCase{float64(-1), false, false, ""},
+		geTestCase{float64(kTwoTo25 - 2), false, false, ""},
+		geTestCase{float64(kTwoTo25 - 1), true, false, ""},
+		geTestCase{float64(kTwoTo25 + 0), true, false, ""},
+		geTestCase{float64(kTwoTo25 + 1), true, false, ""},
+		geTestCase{float64(kTwoTo25 + 2), true, false, ""},
+		geTestCase{float64(kTwoTo25 + 3), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterOrEqualTest) Float64AboveExactIntegerRange() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := GreaterOrEqual(float64(kTwoTo54 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to 1.8014398509481984e+16"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		// Signed integers.
+		geTestCase{int64(-1), false, false, ""},
+		geTestCase{int64(kTwoTo54 - 2), false, false, ""},
+		geTestCase{int64(kTwoTo54 - 1), true, false, ""},
+		geTestCase{int64(kTwoTo54 + 0), true, false, ""},
+		geTestCase{int64(kTwoTo54 + 1), true, false, ""},
+		geTestCase{int64(kTwoTo54 + 2), true, false, ""},
+		geTestCase{int64(kTwoTo54 + 3), true, false, ""},
+
+		// Unsigned integers.
+		geTestCase{uint64(0), false, false, ""},
+		geTestCase{uint64(kTwoTo54 - 2), false, false, ""},
+		geTestCase{uint64(kTwoTo54 - 1), true, false, ""},
+		geTestCase{uint64(kTwoTo54 + 0), true, false, ""},
+		geTestCase{uint64(kTwoTo54 + 1), true, false, ""},
+		geTestCase{uint64(kTwoTo54 + 2), true, false, ""},
+		geTestCase{uint64(kTwoTo54 + 3), true, false, ""},
+
+		// Floating point.
+		geTestCase{float64(-1), false, false, ""},
+		geTestCase{float64(kTwoTo54 - 2), false, false, ""},
+		geTestCase{float64(kTwoTo54 - 1), true, false, ""},
+		geTestCase{float64(kTwoTo54 + 0), true, false, ""},
+		geTestCase{float64(kTwoTo54 + 1), true, false, ""},
+		geTestCase{float64(kTwoTo54 + 2), true, false, ""},
+		geTestCase{float64(kTwoTo54 + 3), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// String literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *GreaterOrEqualTest) EmptyString() {
+	matcher := GreaterOrEqual("")
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to \"\""
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		geTestCase{"", true, false, ""},
+		geTestCase{"\x00", true, false, ""},
+		geTestCase{"a", true, false, ""},
+		geTestCase{"foo", true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterOrEqualTest) SingleNullByte() {
+	matcher := GreaterOrEqual("\x00")
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to \"\x00\""
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		geTestCase{"", false, false, ""},
+		geTestCase{"\x00", true, false, ""},
+		geTestCase{"a", true, false, ""},
+		geTestCase{"foo", true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterOrEqualTest) LongerString() {
+	matcher := GreaterOrEqual("foo\x00")
+	desc := matcher.Description()
+	expectedDesc := "greater than or equal to \"foo\x00\""
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []geTestCase{
+		geTestCase{"", false, false, ""},
+		geTestCase{"\x00", false, false, ""},
+		geTestCase{"bar", false, false, ""},
+		geTestCase{"foo", false, false, ""},
+		geTestCase{"foo\x00", true, false, ""},
+		geTestCase{"fooa", true, false, ""},
+		geTestCase{"qux", true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/greater_than.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/greater_than.go
new file mode 100644
index 00000000000..3eef32178f8
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/greater_than.go
@@ -0,0 +1,39 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// GreaterThan returns a matcher that matches integer, floating point, or
+// strings values v such that v > x. Comparison is not defined between numeric
+// and string types, but is defined between all integer and floating point
+// types.
+//
+// x must itself be an integer, floating point, or string type; otherwise,
+// GreaterThan will panic.
+func GreaterThan(x interface{}) Matcher {
+	desc := fmt.Sprintf("greater than %v", x)
+
+	// Special case: make it clear that strings are strings.
+	if reflect.TypeOf(x).Kind() == reflect.String {
+		desc = fmt.Sprintf("greater than \"%s\"", x)
+	}
+
+	return transformDescription(Not(LessOrEqual(x)), desc)
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/greater_than_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/greater_than_test.go
new file mode 100644
index 00000000000..bf70fe56633
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/greater_than_test.go
@@ -0,0 +1,1077 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	"math"
+
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type GreaterThanTest struct {
+}
+
+func init() { RegisterTestSuite(&GreaterThanTest{}) }
+
+type gtTestCase struct {
+	candidate      interface{}
+	expectedResult bool
+	shouldBeFatal  bool
+	expectedError  string
+}
+
+func (t *GreaterThanTest) checkTestCases(matcher Matcher, cases []gtTestCase) {
+	for i, c := range cases {
+		err := matcher.Matches(c.candidate)
+
+		ExpectThat(
+			(err == nil),
+			Equals(c.expectedResult),
+			"Case %d (candidate %v)",
+			i,
+			c.candidate)
+
+		if err == nil {
+			continue
+		}
+
+		_, isFatal := err.(*FatalError)
+		ExpectEq(
+			c.shouldBeFatal,
+			isFatal,
+			"Case %d (candidate %v)",
+			i,
+			c.candidate)
+
+		ExpectThat(
+			err,
+			Error(Equals(c.expectedError)),
+			"Case %d (candidate %v)",
+			i,
+			c.candidate)
+	}
+}
+
+////////////////////////////////////////////////////////////////////////
+// Integer literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *GreaterThanTest) IntegerCandidateBadTypes() {
+	matcher := GreaterThan(int(-150))
+
+	cases := []gtTestCase{
+		gtTestCase{true, false, true, "which is not comparable"},
+		gtTestCase{complex64(-151), false, true, "which is not comparable"},
+		gtTestCase{complex128(-151), false, true, "which is not comparable"},
+		gtTestCase{[...]int{-151}, false, true, "which is not comparable"},
+		gtTestCase{make(chan int), false, true, "which is not comparable"},
+		gtTestCase{func() {}, false, true, "which is not comparable"},
+		gtTestCase{map[int]int{}, false, true, "which is not comparable"},
+		gtTestCase{&gtTestCase{}, false, true, "which is not comparable"},
+		gtTestCase{make([]int, 0), false, true, "which is not comparable"},
+		gtTestCase{"-151", false, true, "which is not comparable"},
+		gtTestCase{gtTestCase{}, false, true, "which is not comparable"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterThanTest) FloatCandidateBadTypes() {
+	matcher := GreaterThan(float32(-150))
+
+	cases := []gtTestCase{
+		gtTestCase{true, false, true, "which is not comparable"},
+		gtTestCase{complex64(-151), false, true, "which is not comparable"},
+		gtTestCase{complex128(-151), false, true, "which is not comparable"},
+		gtTestCase{[...]int{-151}, false, true, "which is not comparable"},
+		gtTestCase{make(chan int), false, true, "which is not comparable"},
+		gtTestCase{func() {}, false, true, "which is not comparable"},
+		gtTestCase{map[int]int{}, false, true, "which is not comparable"},
+		gtTestCase{&gtTestCase{}, false, true, "which is not comparable"},
+		gtTestCase{make([]int, 0), false, true, "which is not comparable"},
+		gtTestCase{"-151", false, true, "which is not comparable"},
+		gtTestCase{gtTestCase{}, false, true, "which is not comparable"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterThanTest) StringCandidateBadTypes() {
+	matcher := GreaterThan("17")
+
+	cases := []gtTestCase{
+		gtTestCase{true, false, true, "which is not comparable"},
+		gtTestCase{int(0), false, true, "which is not comparable"},
+		gtTestCase{int8(0), false, true, "which is not comparable"},
+		gtTestCase{int16(0), false, true, "which is not comparable"},
+		gtTestCase{int32(0), false, true, "which is not comparable"},
+		gtTestCase{int64(0), false, true, "which is not comparable"},
+		gtTestCase{uint(0), false, true, "which is not comparable"},
+		gtTestCase{uint8(0), false, true, "which is not comparable"},
+		gtTestCase{uint16(0), false, true, "which is not comparable"},
+		gtTestCase{uint32(0), false, true, "which is not comparable"},
+		gtTestCase{uint64(0), false, true, "which is not comparable"},
+		gtTestCase{float32(0), false, true, "which is not comparable"},
+		gtTestCase{float64(0), false, true, "which is not comparable"},
+		gtTestCase{complex64(-151), false, true, "which is not comparable"},
+		gtTestCase{complex128(-151), false, true, "which is not comparable"},
+		gtTestCase{[...]int{-151}, false, true, "which is not comparable"},
+		gtTestCase{make(chan int), false, true, "which is not comparable"},
+		gtTestCase{func() {}, false, true, "which is not comparable"},
+		gtTestCase{map[int]int{}, false, true, "which is not comparable"},
+		gtTestCase{&gtTestCase{}, false, true, "which is not comparable"},
+		gtTestCase{make([]int, 0), false, true, "which is not comparable"},
+		gtTestCase{gtTestCase{}, false, true, "which is not comparable"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterThanTest) BadArgument() {
+	panicked := false
+
+	defer func() {
+		ExpectThat(panicked, Equals(true))
+	}()
+
+	defer func() {
+		if r := recover(); r != nil {
+			panicked = true
+		}
+	}()
+
+	GreaterThan(complex128(0))
+}
+
+////////////////////////////////////////////////////////////////////////
+// Integer literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *GreaterThanTest) NegativeIntegerLiteral() {
+	matcher := GreaterThan(-150)
+	desc := matcher.Description()
+	expectedDesc := "greater than -150"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		// Signed integers.
+		gtTestCase{-(1 << 30), false, false, ""},
+		gtTestCase{-151, false, false, ""},
+		gtTestCase{-150, false, false, ""},
+		gtTestCase{-149, true, false, ""},
+		gtTestCase{0, true, false, ""},
+		gtTestCase{17, true, false, ""},
+
+		gtTestCase{int(-(1 << 30)), false, false, ""},
+		gtTestCase{int(-151), false, false, ""},
+		gtTestCase{int(-150), false, false, ""},
+		gtTestCase{int(-149), true, false, ""},
+		gtTestCase{int(0), true, false, ""},
+		gtTestCase{int(17), true, false, ""},
+
+		gtTestCase{int8(-127), true, false, ""},
+		gtTestCase{int8(0), true, false, ""},
+		gtTestCase{int8(17), true, false, ""},
+
+		gtTestCase{int16(-(1 << 14)), false, false, ""},
+		gtTestCase{int16(-151), false, false, ""},
+		gtTestCase{int16(-150), false, false, ""},
+		gtTestCase{int16(-149), true, false, ""},
+		gtTestCase{int16(0), true, false, ""},
+		gtTestCase{int16(17), true, false, ""},
+
+		gtTestCase{int32(-(1 << 30)), false, false, ""},
+		gtTestCase{int32(-151), false, false, ""},
+		gtTestCase{int32(-150), false, false, ""},
+		gtTestCase{int32(-149), true, false, ""},
+		gtTestCase{int32(0), true, false, ""},
+		gtTestCase{int32(17), true, false, ""},
+
+		gtTestCase{int64(-(1 << 30)), false, false, ""},
+		gtTestCase{int64(-151), false, false, ""},
+		gtTestCase{int64(-150), false, false, ""},
+		gtTestCase{int64(-149), true, false, ""},
+		gtTestCase{int64(0), true, false, ""},
+		gtTestCase{int64(17), true, false, ""},
+
+		// Unsigned integers.
+		gtTestCase{uint((1 << 32) - 151), true, false, ""},
+		gtTestCase{uint(0), true, false, ""},
+		gtTestCase{uint(17), true, false, ""},
+
+		gtTestCase{uint8(0), true, false, ""},
+		gtTestCase{uint8(17), true, false, ""},
+		gtTestCase{uint8(253), true, false, ""},
+
+		gtTestCase{uint16((1 << 16) - 151), true, false, ""},
+		gtTestCase{uint16(0), true, false, ""},
+		gtTestCase{uint16(17), true, false, ""},
+
+		gtTestCase{uint32((1 << 32) - 151), true, false, ""},
+		gtTestCase{uint32(0), true, false, ""},
+		gtTestCase{uint32(17), true, false, ""},
+
+		gtTestCase{uint64((1 << 64) - 151), true, false, ""},
+		gtTestCase{uint64(0), true, false, ""},
+		gtTestCase{uint64(17), true, false, ""},
+
+		// Floating point.
+		gtTestCase{float32(-(1 << 30)), false, false, ""},
+		gtTestCase{float32(-151), false, false, ""},
+		gtTestCase{float32(-150.1), false, false, ""},
+		gtTestCase{float32(-150), false, false, ""},
+		gtTestCase{float32(-149.9), true, false, ""},
+		gtTestCase{float32(0), true, false, ""},
+		gtTestCase{float32(17), true, false, ""},
+		gtTestCase{float32(160), true, false, ""},
+
+		gtTestCase{float64(-(1 << 30)), false, false, ""},
+		gtTestCase{float64(-151), false, false, ""},
+		gtTestCase{float64(-150.1), false, false, ""},
+		gtTestCase{float64(-150), false, false, ""},
+		gtTestCase{float64(-149.9), true, false, ""},
+		gtTestCase{float64(0), true, false, ""},
+		gtTestCase{float64(17), true, false, ""},
+		gtTestCase{float64(160), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterThanTest) ZeroIntegerLiteral() {
+	matcher := GreaterThan(0)
+	desc := matcher.Description()
+	expectedDesc := "greater than 0"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		// Signed integers.
+		gtTestCase{-(1 << 30), false, false, ""},
+		gtTestCase{-1, false, false, ""},
+		gtTestCase{0, false, false, ""},
+		gtTestCase{1, true, false, ""},
+		gtTestCase{17, true, false, ""},
+		gtTestCase{(1 << 30), true, false, ""},
+
+		gtTestCase{int(-(1 << 30)), false, false, ""},
+		gtTestCase{int(-1), false, false, ""},
+		gtTestCase{int(0), false, false, ""},
+		gtTestCase{int(1), true, false, ""},
+		gtTestCase{int(17), true, false, ""},
+
+		gtTestCase{int8(-1), false, false, ""},
+		gtTestCase{int8(0), false, false, ""},
+		gtTestCase{int8(1), true, false, ""},
+
+		gtTestCase{int16(-(1 << 14)), false, false, ""},
+		gtTestCase{int16(-1), false, false, ""},
+		gtTestCase{int16(0), false, false, ""},
+		gtTestCase{int16(1), true, false, ""},
+		gtTestCase{int16(17), true, false, ""},
+
+		gtTestCase{int32(-(1 << 30)), false, false, ""},
+		gtTestCase{int32(-1), false, false, ""},
+		gtTestCase{int32(0), false, false, ""},
+		gtTestCase{int32(1), true, false, ""},
+		gtTestCase{int32(17), true, false, ""},
+
+		gtTestCase{int64(-(1 << 30)), false, false, ""},
+		gtTestCase{int64(-1), false, false, ""},
+		gtTestCase{int64(0), false, false, ""},
+		gtTestCase{int64(1), true, false, ""},
+		gtTestCase{int64(17), true, false, ""},
+
+		// Unsigned integers.
+		gtTestCase{uint((1 << 32) - 1), true, false, ""},
+		gtTestCase{uint(0), false, false, ""},
+		gtTestCase{uint(1), true, false, ""},
+		gtTestCase{uint(17), true, false, ""},
+
+		gtTestCase{uint8(0), false, false, ""},
+		gtTestCase{uint8(1), true, false, ""},
+		gtTestCase{uint8(17), true, false, ""},
+		gtTestCase{uint8(253), true, false, ""},
+
+		gtTestCase{uint16((1 << 16) - 1), true, false, ""},
+		gtTestCase{uint16(0), false, false, ""},
+		gtTestCase{uint16(1), true, false, ""},
+		gtTestCase{uint16(17), true, false, ""},
+
+		gtTestCase{uint32((1 << 32) - 1), true, false, ""},
+		gtTestCase{uint32(0), false, false, ""},
+		gtTestCase{uint32(1), true, false, ""},
+		gtTestCase{uint32(17), true, false, ""},
+
+		gtTestCase{uint64((1 << 64) - 1), true, false, ""},
+		gtTestCase{uint64(0), false, false, ""},
+		gtTestCase{uint64(1), true, false, ""},
+		gtTestCase{uint64(17), true, false, ""},
+
+		// Floating point.
+		gtTestCase{float32(-(1 << 30)), false, false, ""},
+		gtTestCase{float32(-1), false, false, ""},
+		gtTestCase{float32(-0.1), false, false, ""},
+		gtTestCase{float32(-0.0), false, false, ""},
+		gtTestCase{float32(0), false, false, ""},
+		gtTestCase{float32(0.1), true, false, ""},
+		gtTestCase{float32(17), true, false, ""},
+		gtTestCase{float32(160), true, false, ""},
+
+		gtTestCase{float64(-(1 << 30)), false, false, ""},
+		gtTestCase{float64(-1), false, false, ""},
+		gtTestCase{float64(-0.1), false, false, ""},
+		gtTestCase{float64(-0), false, false, ""},
+		gtTestCase{float64(0), false, false, ""},
+		gtTestCase{float64(0.1), true, false, ""},
+		gtTestCase{float64(17), true, false, ""},
+		gtTestCase{float64(160), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterThanTest) PositiveIntegerLiteral() {
+	matcher := GreaterThan(150)
+	desc := matcher.Description()
+	expectedDesc := "greater than 150"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		// Signed integers.
+		gtTestCase{-1, false, false, ""},
+		gtTestCase{149, false, false, ""},
+		gtTestCase{150, false, false, ""},
+		gtTestCase{151, true, false, ""},
+
+		gtTestCase{int(-1), false, false, ""},
+		gtTestCase{int(149), false, false, ""},
+		gtTestCase{int(150), false, false, ""},
+		gtTestCase{int(151), true, false, ""},
+
+		gtTestCase{int8(-1), false, false, ""},
+		gtTestCase{int8(0), false, false, ""},
+		gtTestCase{int8(17), false, false, ""},
+		gtTestCase{int8(127), false, false, ""},
+
+		gtTestCase{int16(-1), false, false, ""},
+		gtTestCase{int16(149), false, false, ""},
+		gtTestCase{int16(150), false, false, ""},
+		gtTestCase{int16(151), true, false, ""},
+
+		gtTestCase{int32(-1), false, false, ""},
+		gtTestCase{int32(149), false, false, ""},
+		gtTestCase{int32(150), false, false, ""},
+		gtTestCase{int32(151), true, false, ""},
+
+		gtTestCase{int64(-1), false, false, ""},
+		gtTestCase{int64(149), false, false, ""},
+		gtTestCase{int64(150), false, false, ""},
+		gtTestCase{int64(151), true, false, ""},
+
+		// Unsigned integers.
+		gtTestCase{uint(0), false, false, ""},
+		gtTestCase{uint(149), false, false, ""},
+		gtTestCase{uint(150), false, false, ""},
+		gtTestCase{uint(151), true, false, ""},
+
+		gtTestCase{uint8(0), false, false, ""},
+		gtTestCase{uint8(127), false, false, ""},
+
+		gtTestCase{uint16(0), false, false, ""},
+		gtTestCase{uint16(149), false, false, ""},
+		gtTestCase{uint16(150), false, false, ""},
+		gtTestCase{uint16(151), true, false, ""},
+
+		gtTestCase{uint32(0), false, false, ""},
+		gtTestCase{uint32(149), false, false, ""},
+		gtTestCase{uint32(150), false, false, ""},
+		gtTestCase{uint32(151), true, false, ""},
+
+		gtTestCase{uint64(0), false, false, ""},
+		gtTestCase{uint64(149), false, false, ""},
+		gtTestCase{uint64(150), false, false, ""},
+		gtTestCase{uint64(151), true, false, ""},
+
+		// Floating point.
+		gtTestCase{float32(-1), false, false, ""},
+		gtTestCase{float32(149), false, false, ""},
+		gtTestCase{float32(149.9), false, false, ""},
+		gtTestCase{float32(150), false, false, ""},
+		gtTestCase{float32(150.1), true, false, ""},
+		gtTestCase{float32(151), true, false, ""},
+
+		gtTestCase{float64(-1), false, false, ""},
+		gtTestCase{float64(149), false, false, ""},
+		gtTestCase{float64(149.9), false, false, ""},
+		gtTestCase{float64(150), false, false, ""},
+		gtTestCase{float64(150.1), true, false, ""},
+		gtTestCase{float64(151), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Float literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *GreaterThanTest) NegativeFloatLiteral() {
+	matcher := GreaterThan(-150.1)
+	desc := matcher.Description()
+	expectedDesc := "greater than -150.1"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		// Signed integers.
+		gtTestCase{-(1 << 30), false, false, ""},
+		gtTestCase{-151, false, false, ""},
+		gtTestCase{-150.1, false, false, ""},
+		gtTestCase{-150, true, false, ""},
+		gtTestCase{-149, true, false, ""},
+		gtTestCase{0, true, false, ""},
+		gtTestCase{17, true, false, ""},
+
+		gtTestCase{int(-(1 << 30)), false, false, ""},
+		gtTestCase{int(-151), false, false, ""},
+		gtTestCase{int(-150), true, false, ""},
+		gtTestCase{int(-149), true, false, ""},
+		gtTestCase{int(0), true, false, ""},
+		gtTestCase{int(17), true, false, ""},
+
+		gtTestCase{int8(-127), true, false, ""},
+		gtTestCase{int8(0), true, false, ""},
+		gtTestCase{int8(17), true, false, ""},
+
+		gtTestCase{int16(-(1 << 14)), false, false, ""},
+		gtTestCase{int16(-151), false, false, ""},
+		gtTestCase{int16(-150), true, false, ""},
+		gtTestCase{int16(-149), true, false, ""},
+		gtTestCase{int16(0), true, false, ""},
+		gtTestCase{int16(17), true, false, ""},
+
+		gtTestCase{int32(-(1 << 30)), false, false, ""},
+		gtTestCase{int32(-151), false, false, ""},
+		gtTestCase{int32(-150), true, false, ""},
+		gtTestCase{int32(-149), true, false, ""},
+		gtTestCase{int32(0), true, false, ""},
+		gtTestCase{int32(17), true, false, ""},
+
+		gtTestCase{int64(-(1 << 30)), false, false, ""},
+		gtTestCase{int64(-151), false, false, ""},
+		gtTestCase{int64(-150), true, false, ""},
+		gtTestCase{int64(-149), true, false, ""},
+		gtTestCase{int64(0), true, false, ""},
+		gtTestCase{int64(17), true, false, ""},
+
+		// Unsigned integers.
+		gtTestCase{uint((1 << 32) - 151), true, false, ""},
+		gtTestCase{uint(0), true, false, ""},
+		gtTestCase{uint(17), true, false, ""},
+
+		gtTestCase{uint8(0), true, false, ""},
+		gtTestCase{uint8(17), true, false, ""},
+		gtTestCase{uint8(253), true, false, ""},
+
+		gtTestCase{uint16((1 << 16) - 151), true, false, ""},
+		gtTestCase{uint16(0), true, false, ""},
+		gtTestCase{uint16(17), true, false, ""},
+
+		gtTestCase{uint32((1 << 32) - 151), true, false, ""},
+		gtTestCase{uint32(0), true, false, ""},
+		gtTestCase{uint32(17), true, false, ""},
+
+		gtTestCase{uint64((1 << 64) - 151), true, false, ""},
+		gtTestCase{uint64(0), true, false, ""},
+		gtTestCase{uint64(17), true, false, ""},
+
+		// Floating point.
+		gtTestCase{float32(-(1 << 30)), false, false, ""},
+		gtTestCase{float32(-151), false, false, ""},
+		gtTestCase{float32(-150.2), false, false, ""},
+		gtTestCase{float32(-150.1), false, false, ""},
+		gtTestCase{float32(-150), true, false, ""},
+		gtTestCase{float32(0), true, false, ""},
+		gtTestCase{float32(17), true, false, ""},
+		gtTestCase{float32(160), true, false, ""},
+
+		gtTestCase{float64(-(1 << 30)), false, false, ""},
+		gtTestCase{float64(-151), false, false, ""},
+		gtTestCase{float64(-150.2), false, false, ""},
+		gtTestCase{float64(-150.1), false, false, ""},
+		gtTestCase{float64(-150), true, false, ""},
+		gtTestCase{float64(0), true, false, ""},
+		gtTestCase{float64(17), true, false, ""},
+		gtTestCase{float64(160), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterThanTest) PositiveFloatLiteral() {
+	matcher := GreaterThan(149.9)
+	desc := matcher.Description()
+	expectedDesc := "greater than 149.9"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		// Signed integers.
+		gtTestCase{-1, false, false, ""},
+		gtTestCase{149, false, false, ""},
+		gtTestCase{149.9, false, false, ""},
+		gtTestCase{150, true, false, ""},
+		gtTestCase{151, true, false, ""},
+
+		gtTestCase{int(-1), false, false, ""},
+		gtTestCase{int(149), false, false, ""},
+		gtTestCase{int(150), true, false, ""},
+		gtTestCase{int(151), true, false, ""},
+
+		gtTestCase{int8(-1), false, false, ""},
+		gtTestCase{int8(0), false, false, ""},
+		gtTestCase{int8(17), false, false, ""},
+		gtTestCase{int8(127), false, false, ""},
+
+		gtTestCase{int16(-1), false, false, ""},
+		gtTestCase{int16(149), false, false, ""},
+		gtTestCase{int16(150), true, false, ""},
+		gtTestCase{int16(151), true, false, ""},
+
+		gtTestCase{int32(-1), false, false, ""},
+		gtTestCase{int32(149), false, false, ""},
+		gtTestCase{int32(150), true, false, ""},
+		gtTestCase{int32(151), true, false, ""},
+
+		gtTestCase{int64(-1), false, false, ""},
+		gtTestCase{int64(149), false, false, ""},
+		gtTestCase{int64(150), true, false, ""},
+		gtTestCase{int64(151), true, false, ""},
+
+		// Unsigned integers.
+		gtTestCase{uint(0), false, false, ""},
+		gtTestCase{uint(149), false, false, ""},
+		gtTestCase{uint(150), true, false, ""},
+		gtTestCase{uint(151), true, false, ""},
+
+		gtTestCase{uint8(0), false, false, ""},
+		gtTestCase{uint8(127), false, false, ""},
+
+		gtTestCase{uint16(0), false, false, ""},
+		gtTestCase{uint16(149), false, false, ""},
+		gtTestCase{uint16(150), true, false, ""},
+		gtTestCase{uint16(151), true, false, ""},
+
+		gtTestCase{uint32(0), false, false, ""},
+		gtTestCase{uint32(149), false, false, ""},
+		gtTestCase{uint32(150), true, false, ""},
+		gtTestCase{uint32(151), true, false, ""},
+
+		gtTestCase{uint64(0), false, false, ""},
+		gtTestCase{uint64(149), false, false, ""},
+		gtTestCase{uint64(150), true, false, ""},
+		gtTestCase{uint64(151), true, false, ""},
+
+		// Floating point.
+		gtTestCase{float32(-1), false, false, ""},
+		gtTestCase{float32(149), false, false, ""},
+		gtTestCase{float32(149.8), false, false, ""},
+		gtTestCase{float32(149.9), false, false, ""},
+		gtTestCase{float32(150), true, false, ""},
+		gtTestCase{float32(151), true, false, ""},
+
+		gtTestCase{float64(-1), false, false, ""},
+		gtTestCase{float64(149), false, false, ""},
+		gtTestCase{float64(149.8), false, false, ""},
+		gtTestCase{float64(149.9), false, false, ""},
+		gtTestCase{float64(150), true, false, ""},
+		gtTestCase{float64(151), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Subtle cases
+////////////////////////////////////////////////////////////////////////
+
+func (t *GreaterThanTest) Int64NotExactlyRepresentableBySinglePrecision() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := GreaterThan(int64(kTwoTo25 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "greater than 33554433"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		// Signed integers.
+		gtTestCase{-1, false, false, ""},
+		gtTestCase{kTwoTo25 + 0, false, false, ""},
+		gtTestCase{kTwoTo25 + 1, false, false, ""},
+		gtTestCase{kTwoTo25 + 2, true, false, ""},
+
+		gtTestCase{int(-1), false, false, ""},
+		gtTestCase{int(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{int(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{int(kTwoTo25 + 2), true, false, ""},
+
+		gtTestCase{int8(-1), false, false, ""},
+		gtTestCase{int8(127), false, false, ""},
+
+		gtTestCase{int16(-1), false, false, ""},
+		gtTestCase{int16(0), false, false, ""},
+		gtTestCase{int16(32767), false, false, ""},
+
+		gtTestCase{int32(-1), false, false, ""},
+		gtTestCase{int32(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{int32(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{int32(kTwoTo25 + 2), true, false, ""},
+
+		gtTestCase{int64(-1), false, false, ""},
+		gtTestCase{int64(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{int64(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{int64(kTwoTo25 + 2), true, false, ""},
+
+		// Unsigned integers.
+		gtTestCase{uint(0), false, false, ""},
+		gtTestCase{uint(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{uint(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{uint(kTwoTo25 + 2), true, false, ""},
+
+		gtTestCase{uint8(0), false, false, ""},
+		gtTestCase{uint8(255), false, false, ""},
+
+		gtTestCase{uint16(0), false, false, ""},
+		gtTestCase{uint16(65535), false, false, ""},
+
+		gtTestCase{uint32(0), false, false, ""},
+		gtTestCase{uint32(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{uint32(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{uint32(kTwoTo25 + 2), true, false, ""},
+
+		gtTestCase{uint64(0), false, false, ""},
+		gtTestCase{uint64(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{uint64(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{uint64(kTwoTo25 + 2), true, false, ""},
+
+		// Floating point.
+		gtTestCase{float32(-1), false, false, ""},
+		gtTestCase{float32(kTwoTo25 - 2), false, false, ""},
+		gtTestCase{float32(kTwoTo25 - 1), false, false, ""},
+		gtTestCase{float32(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{float32(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{float32(kTwoTo25 + 2), false, false, ""},
+		gtTestCase{float32(kTwoTo25 + 3), true, false, ""},
+
+		gtTestCase{float64(-1), false, false, ""},
+		gtTestCase{float64(kTwoTo25 - 2), false, false, ""},
+		gtTestCase{float64(kTwoTo25 - 1), false, false, ""},
+		gtTestCase{float64(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{float64(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{float64(kTwoTo25 + 2), true, false, ""},
+		gtTestCase{float64(kTwoTo25 + 3), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterThanTest) Int64NotExactlyRepresentableByDoublePrecision() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := GreaterThan(int64(kTwoTo54 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "greater than 18014398509481985"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		// Signed integers.
+		gtTestCase{-1, false, false, ""},
+		gtTestCase{1 << 30, false, false, ""},
+
+		gtTestCase{int(-1), false, false, ""},
+		gtTestCase{int(math.MaxInt32), false, false, ""},
+
+		gtTestCase{int8(-1), false, false, ""},
+		gtTestCase{int8(127), false, false, ""},
+
+		gtTestCase{int16(-1), false, false, ""},
+		gtTestCase{int16(0), false, false, ""},
+		gtTestCase{int16(32767), false, false, ""},
+
+		gtTestCase{int32(-1), false, false, ""},
+		gtTestCase{int32(math.MaxInt32), false, false, ""},
+
+		gtTestCase{int64(-1), false, false, ""},
+		gtTestCase{int64(kTwoTo54 - 1), false, false, ""},
+		gtTestCase{int64(kTwoTo54 + 0), false, false, ""},
+		gtTestCase{int64(kTwoTo54 + 1), false, false, ""},
+		gtTestCase{int64(kTwoTo54 + 2), true, false, ""},
+
+		// Unsigned integers.
+		gtTestCase{uint(0), false, false, ""},
+		gtTestCase{uint(math.MaxUint32), false, false, ""},
+
+		gtTestCase{uint8(0), false, false, ""},
+		gtTestCase{uint8(255), false, false, ""},
+
+		gtTestCase{uint16(0), false, false, ""},
+		gtTestCase{uint16(65535), false, false, ""},
+
+		gtTestCase{uint32(0), false, false, ""},
+		gtTestCase{uint32(math.MaxUint32), false, false, ""},
+
+		gtTestCase{uint64(0), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 - 1), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 + 0), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 + 1), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 + 2), true, false, ""},
+
+		// Floating point.
+		gtTestCase{float64(-1), false, false, ""},
+		gtTestCase{float64(kTwoTo54 - 2), false, false, ""},
+		gtTestCase{float64(kTwoTo54 - 1), false, false, ""},
+		gtTestCase{float64(kTwoTo54 + 0), false, false, ""},
+		gtTestCase{float64(kTwoTo54 + 1), false, false, ""},
+		gtTestCase{float64(kTwoTo54 + 2), false, false, ""},
+		gtTestCase{float64(kTwoTo54 + 3), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterThanTest) Uint64NotExactlyRepresentableBySinglePrecision() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := GreaterThan(uint64(kTwoTo25 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "greater than 33554433"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		// Signed integers.
+		gtTestCase{-1, false, false, ""},
+		gtTestCase{kTwoTo25 + 0, false, false, ""},
+		gtTestCase{kTwoTo25 + 1, false, false, ""},
+		gtTestCase{kTwoTo25 + 2, true, false, ""},
+
+		gtTestCase{int(-1), false, false, ""},
+		gtTestCase{int(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{int(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{int(kTwoTo25 + 2), true, false, ""},
+
+		gtTestCase{int8(-1), false, false, ""},
+		gtTestCase{int8(127), false, false, ""},
+
+		gtTestCase{int16(-1), false, false, ""},
+		gtTestCase{int16(0), false, false, ""},
+		gtTestCase{int16(32767), false, false, ""},
+
+		gtTestCase{int32(-1), false, false, ""},
+		gtTestCase{int32(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{int32(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{int32(kTwoTo25 + 2), true, false, ""},
+
+		gtTestCase{int64(-1), false, false, ""},
+		gtTestCase{int64(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{int64(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{int64(kTwoTo25 + 2), true, false, ""},
+
+		// Unsigned integers.
+		gtTestCase{uint(0), false, false, ""},
+		gtTestCase{uint(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{uint(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{uint(kTwoTo25 + 2), true, false, ""},
+
+		gtTestCase{uint8(0), false, false, ""},
+		gtTestCase{uint8(255), false, false, ""},
+
+		gtTestCase{uint16(0), false, false, ""},
+		gtTestCase{uint16(65535), false, false, ""},
+
+		gtTestCase{uint32(0), false, false, ""},
+		gtTestCase{uint32(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{uint32(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{uint32(kTwoTo25 + 2), true, false, ""},
+
+		gtTestCase{uint64(0), false, false, ""},
+		gtTestCase{uint64(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{uint64(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{uint64(kTwoTo25 + 2), true, false, ""},
+
+		// Floating point.
+		gtTestCase{float32(-1), false, false, ""},
+		gtTestCase{float32(kTwoTo25 - 2), false, false, ""},
+		gtTestCase{float32(kTwoTo25 - 1), false, false, ""},
+		gtTestCase{float32(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{float32(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{float32(kTwoTo25 + 2), false, false, ""},
+		gtTestCase{float32(kTwoTo25 + 3), true, false, ""},
+
+		gtTestCase{float64(-1), false, false, ""},
+		gtTestCase{float64(kTwoTo25 - 2), false, false, ""},
+		gtTestCase{float64(kTwoTo25 - 1), false, false, ""},
+		gtTestCase{float64(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{float64(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{float64(kTwoTo25 + 2), true, false, ""},
+		gtTestCase{float64(kTwoTo25 + 3), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterThanTest) Uint64NotExactlyRepresentableByDoublePrecision() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := GreaterThan(uint64(kTwoTo54 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "greater than 18014398509481985"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		// Signed integers.
+		gtTestCase{-1, false, false, ""},
+		gtTestCase{1 << 30, false, false, ""},
+
+		gtTestCase{int(-1), false, false, ""},
+		gtTestCase{int(math.MaxInt32), false, false, ""},
+
+		gtTestCase{int8(-1), false, false, ""},
+		gtTestCase{int8(127), false, false, ""},
+
+		gtTestCase{int16(-1), false, false, ""},
+		gtTestCase{int16(0), false, false, ""},
+		gtTestCase{int16(32767), false, false, ""},
+
+		gtTestCase{int32(-1), false, false, ""},
+		gtTestCase{int32(math.MaxInt32), false, false, ""},
+
+		gtTestCase{int64(-1), false, false, ""},
+		gtTestCase{int64(kTwoTo54 - 1), false, false, ""},
+		gtTestCase{int64(kTwoTo54 + 0), false, false, ""},
+		gtTestCase{int64(kTwoTo54 + 1), false, false, ""},
+		gtTestCase{int64(kTwoTo54 + 2), true, false, ""},
+
+		// Unsigned integers.
+		gtTestCase{uint(0), false, false, ""},
+		gtTestCase{uint(math.MaxUint32), false, false, ""},
+
+		gtTestCase{uint8(0), false, false, ""},
+		gtTestCase{uint8(255), false, false, ""},
+
+		gtTestCase{uint16(0), false, false, ""},
+		gtTestCase{uint16(65535), false, false, ""},
+
+		gtTestCase{uint32(0), false, false, ""},
+		gtTestCase{uint32(math.MaxUint32), false, false, ""},
+
+		gtTestCase{uint64(0), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 - 1), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 + 0), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 + 1), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 + 2), true, false, ""},
+
+		// Floating point.
+		gtTestCase{float64(-1), false, false, ""},
+		gtTestCase{float64(kTwoTo54 - 2), false, false, ""},
+		gtTestCase{float64(kTwoTo54 - 1), false, false, ""},
+		gtTestCase{float64(kTwoTo54 + 0), false, false, ""},
+		gtTestCase{float64(kTwoTo54 + 1), false, false, ""},
+		gtTestCase{float64(kTwoTo54 + 2), false, false, ""},
+		gtTestCase{float64(kTwoTo54 + 3), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterThanTest) Float32AboveExactIntegerRange() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := GreaterThan(float32(kTwoTo25 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "greater than 3.3554432e+07"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		// Signed integers.
+		gtTestCase{int64(-1), false, false, ""},
+		gtTestCase{int64(kTwoTo25 - 2), false, false, ""},
+		gtTestCase{int64(kTwoTo25 - 1), false, false, ""},
+		gtTestCase{int64(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{int64(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{int64(kTwoTo25 + 2), false, false, ""},
+		gtTestCase{int64(kTwoTo25 + 3), true, false, ""},
+
+		// Unsigned integers.
+		gtTestCase{uint64(0), false, false, ""},
+		gtTestCase{uint64(kTwoTo25 - 2), false, false, ""},
+		gtTestCase{uint64(kTwoTo25 - 1), false, false, ""},
+		gtTestCase{uint64(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{uint64(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{uint64(kTwoTo25 + 2), false, false, ""},
+		gtTestCase{uint64(kTwoTo25 + 3), true, false, ""},
+
+		// Floating point.
+		gtTestCase{float32(-1), false, false, ""},
+		gtTestCase{float32(kTwoTo25 - 2), false, false, ""},
+		gtTestCase{float32(kTwoTo25 - 1), false, false, ""},
+		gtTestCase{float32(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{float32(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{float32(kTwoTo25 + 2), false, false, ""},
+		gtTestCase{float32(kTwoTo25 + 3), true, false, ""},
+
+		gtTestCase{float64(-1), false, false, ""},
+		gtTestCase{float64(kTwoTo25 - 2), false, false, ""},
+		gtTestCase{float64(kTwoTo25 - 1), false, false, ""},
+		gtTestCase{float64(kTwoTo25 + 0), false, false, ""},
+		gtTestCase{float64(kTwoTo25 + 1), false, false, ""},
+		gtTestCase{float64(kTwoTo25 + 2), false, false, ""},
+		gtTestCase{float64(kTwoTo25 + 3), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterThanTest) Float64AboveExactIntegerRange() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := GreaterThan(float64(kTwoTo54 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "greater than 1.8014398509481984e+16"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		// Signed integers.
+		gtTestCase{int64(-1), false, false, ""},
+		gtTestCase{int64(kTwoTo54 - 2), false, false, ""},
+		gtTestCase{int64(kTwoTo54 - 1), false, false, ""},
+		gtTestCase{int64(kTwoTo54 + 0), false, false, ""},
+		gtTestCase{int64(kTwoTo54 + 1), false, false, ""},
+		gtTestCase{int64(kTwoTo54 + 2), false, false, ""},
+		gtTestCase{int64(kTwoTo54 + 3), true, false, ""},
+
+		// Unsigned integers.
+		gtTestCase{uint64(0), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 - 2), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 - 1), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 + 0), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 + 1), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 + 2), false, false, ""},
+		gtTestCase{uint64(kTwoTo54 + 3), true, false, ""},
+
+		// Floating point.
+		gtTestCase{float64(-1), false, false, ""},
+		gtTestCase{float64(kTwoTo54 - 2), false, false, ""},
+		gtTestCase{float64(kTwoTo54 - 1), false, false, ""},
+		gtTestCase{float64(kTwoTo54 + 0), false, false, ""},
+		gtTestCase{float64(kTwoTo54 + 1), false, false, ""},
+		gtTestCase{float64(kTwoTo54 + 2), false, false, ""},
+		gtTestCase{float64(kTwoTo54 + 3), true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// String literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *GreaterThanTest) EmptyString() {
+	matcher := GreaterThan("")
+	desc := matcher.Description()
+	expectedDesc := "greater than \"\""
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		gtTestCase{"", false, false, ""},
+		gtTestCase{"\x00", true, false, ""},
+		gtTestCase{"a", true, false, ""},
+		gtTestCase{"foo", true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterThanTest) SingleNullByte() {
+	matcher := GreaterThan("\x00")
+	desc := matcher.Description()
+	expectedDesc := "greater than \"\x00\""
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		gtTestCase{"", false, false, ""},
+		gtTestCase{"\x00", false, false, ""},
+		gtTestCase{"\x00\x00", true, false, ""},
+		gtTestCase{"a", true, false, ""},
+		gtTestCase{"foo", true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *GreaterThanTest) LongerString() {
+	matcher := GreaterThan("foo\x00")
+	desc := matcher.Description()
+	expectedDesc := "greater than \"foo\x00\""
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []gtTestCase{
+		gtTestCase{"", false, false, ""},
+		gtTestCase{"\x00", false, false, ""},
+		gtTestCase{"bar", false, false, ""},
+		gtTestCase{"foo", false, false, ""},
+		gtTestCase{"foo\x00", false, false, ""},
+		gtTestCase{"foo\x00\x00", true, false, ""},
+		gtTestCase{"fooa", true, false, ""},
+		gtTestCase{"qux", true, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/has_same_type_as.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/has_same_type_as.go
new file mode 100644
index 00000000000..3b286f73218
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/has_same_type_as.go
@@ -0,0 +1,37 @@
+// Copyright 2015 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// HasSameTypeAs returns a matcher that matches values with exactly the same
+// type as the supplied prototype.
+func HasSameTypeAs(p interface{}) Matcher {
+	expected := reflect.TypeOf(p)
+	pred := func(c interface{}) error {
+		actual := reflect.TypeOf(c)
+		if actual != expected {
+			return fmt.Errorf("which has type %v", actual)
+		}
+
+		return nil
+	}
+
+	return NewMatcher(pred, fmt.Sprintf("has type %v", expected))
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/has_same_type_as_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/has_same_type_as_test.go
new file mode 100644
index 00000000000..a4a3e308aa3
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/has_same_type_as_test.go
@@ -0,0 +1,181 @@
+// Copyright 2015 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	"io"
+	"testing"
+
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+func TestHasSameTypeAs(t *testing.T) { RunTests(t) }
+
+////////////////////////////////////////////////////////////////////////
+// Boilerplate
+////////////////////////////////////////////////////////////////////////
+
+type HasSameTypeAsTest struct {
+}
+
+func init() { RegisterTestSuite(&HasSameTypeAsTest{}) }
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *HasSameTypeAsTest) CandidateIsLiteralNil() {
+	matcher := HasSameTypeAs(nil)
+	var err error
+
+	// Description
+	ExpectEq("has type <nil>", matcher.Description())
+
+	// Literal nil
+	err = matcher.Matches(nil)
+	ExpectEq(nil, err)
+
+	// nil in interface variable
+	var r io.Reader
+	err = matcher.Matches(r)
+	ExpectEq(nil, err)
+
+	// int
+	err = matcher.Matches(17)
+	AssertNe(nil, err)
+	ExpectThat(err, Error(Equals("which has type int")))
+
+	// string
+	err = matcher.Matches("")
+	AssertNe(nil, err)
+	ExpectThat(err, Error(Equals("which has type string")))
+
+	// nil map
+	var m map[string]string
+	err = matcher.Matches(m)
+
+	AssertNe(nil, err)
+	ExpectThat(err, Error(Equals("which has type map[string]string")))
+
+	// Non-nil map
+	m = make(map[string]string)
+	err = matcher.Matches(m)
+
+	AssertNe(nil, err)
+	ExpectThat(err, Error(Equals("which has type map[string]string")))
+}
+
+func (t *HasSameTypeAsTest) CandidateIsNilMap() {
+	var m map[string]string
+	matcher := HasSameTypeAs(m)
+	var err error
+
+	// Description
+	ExpectEq("has type map[string]string", matcher.Description())
+
+	// nil map
+	m = nil
+	err = matcher.Matches(m)
+	ExpectEq(nil, err)
+
+	// Non-nil map
+	m = make(map[string]string)
+	err = matcher.Matches(m)
+	ExpectEq(nil, err)
+
+	// Literal nil
+	err = matcher.Matches(nil)
+	AssertNe(nil, err)
+	ExpectThat(err, Error(Equals("which has type <nil>")))
+
+	// int
+	err = matcher.Matches(17)
+	AssertNe(nil, err)
+	ExpectThat(err, Error(Equals("which has type int")))
+
+	// string
+	err = matcher.Matches("")
+	AssertNe(nil, err)
+	ExpectThat(err, Error(Equals("which has type string")))
+}
+
+func (t *HasSameTypeAsTest) CandidateIsNilInInterfaceVariable() {
+	var r io.Reader
+	matcher := HasSameTypeAs(r)
+	var err error
+
+	// Description
+	ExpectEq("has type <nil>", matcher.Description())
+
+	// nil in interface variable
+	r = nil
+	err = matcher.Matches(r)
+	ExpectEq(nil, err)
+
+	// Literal nil
+	err = matcher.Matches(nil)
+	ExpectEq(nil, err)
+
+	// int
+	err = matcher.Matches(17)
+	AssertNe(nil, err)
+	ExpectThat(err, Error(Equals("which has type int")))
+}
+
+func (t *HasSameTypeAsTest) CandidateIsString() {
+	matcher := HasSameTypeAs("")
+	var err error
+
+	// Description
+	ExpectEq("has type string", matcher.Description())
+
+	// string
+	err = matcher.Matches("taco")
+	ExpectEq(nil, err)
+
+	// string alias
+	type Foo string
+	err = matcher.Matches(Foo("taco"))
+	ExpectThat(err, Error(MatchesRegexp("which has type .*Foo")))
+
+	// Literal nil
+	err = matcher.Matches(nil)
+	AssertNe(nil, err)
+	ExpectThat(err, Error(Equals("which has type <nil>")))
+
+	// int
+	err = matcher.Matches(17)
+	AssertNe(nil, err)
+	ExpectThat(err, Error(Equals("which has type int")))
+}
+
+func (t *HasSameTypeAsTest) CandidateIsStringAlias() {
+	type Foo string
+	matcher := HasSameTypeAs(Foo(""))
+	var err error
+
+	// Description
+	ExpectThat(matcher.Description(), MatchesRegexp("has type .*Foo"))
+
+	// string alias
+	err = matcher.Matches(Foo("taco"))
+	ExpectEq(nil, err)
+
+	// string
+	err = matcher.Matches("taco")
+	ExpectThat(err, Error(Equals("which has type string")))
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/has_substr.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/has_substr.go
new file mode 100644
index 00000000000..bf5bd6ae6d3
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/has_substr.go
@@ -0,0 +1,46 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+// HasSubstr returns a matcher that matches strings containing s as a
+// substring.
+func HasSubstr(s string) Matcher {
+	return NewMatcher(
+		func(c interface{}) error { return hasSubstr(s, c) },
+		fmt.Sprintf("has substring \"%s\"", s))
+}
+
+func hasSubstr(needle string, c interface{}) error {
+	v := reflect.ValueOf(c)
+	if v.Kind() != reflect.String {
+		return NewFatalError("which is not a string")
+	}
+
+	// Perform the substring search.
+	haystack := v.String()
+	if strings.Contains(haystack, needle) {
+		return nil
+	}
+
+	return errors.New("")
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/has_substr_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/has_substr_test.go
new file mode 100644
index 00000000000..6fc913a2490
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/has_substr_test.go
@@ -0,0 +1,93 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type HasSubstrTest struct {
+
+}
+
+func init() { RegisterTestSuite(&HasSubstrTest{}) }
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *HasSubstrTest) Description() {
+	matcher := HasSubstr("taco")
+	ExpectThat(matcher.Description(), Equals("has substring \"taco\""))
+}
+
+func (t *HasSubstrTest) CandidateIsNil() {
+	matcher := HasSubstr("")
+	err := matcher.Matches(nil)
+
+	ExpectThat(err, Error(Equals("which is not a string")))
+	ExpectTrue(isFatal(err))
+}
+
+func (t *HasSubstrTest) CandidateIsInteger() {
+	matcher := HasSubstr("")
+	err := matcher.Matches(17)
+
+	ExpectThat(err, Error(Equals("which is not a string")))
+	ExpectTrue(isFatal(err))
+}
+
+func (t *HasSubstrTest) CandidateIsByteSlice() {
+	matcher := HasSubstr("")
+	err := matcher.Matches([]byte{17})
+
+	ExpectThat(err, Error(Equals("which is not a string")))
+	ExpectTrue(isFatal(err))
+}
+
+func (t *HasSubstrTest) CandidateDoesntHaveSubstring() {
+	matcher := HasSubstr("taco")
+	err := matcher.Matches("tac")
+
+	ExpectThat(err, Error(Equals("")))
+	ExpectFalse(isFatal(err))
+}
+
+func (t *HasSubstrTest) CandidateEqualsArg() {
+	matcher := HasSubstr("taco")
+	err := matcher.Matches("taco")
+
+	ExpectThat(err, Equals(nil))
+}
+
+func (t *HasSubstrTest) CandidateHasProperSubstring() {
+	matcher := HasSubstr("taco")
+	err := matcher.Matches("burritos and tacos")
+
+	ExpectThat(err, Equals(nil))
+}
+
+func (t *HasSubstrTest) EmptyStringIsAlwaysSubString() {
+	matcher := HasSubstr("")
+	err := matcher.Matches("asdf")
+
+	ExpectThat(err, Equals(nil))
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/identical_to.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/identical_to.go
new file mode 100644
index 00000000000..ae6460ed966
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/identical_to.go
@@ -0,0 +1,134 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+)
+
+// Is the type comparable according to the definition here?
+//
+//     http://weekly.golang.org/doc/go_spec.html#Comparison_operators
+//
+func isComparable(t reflect.Type) bool {
+	switch t.Kind() {
+	case reflect.Array:
+		return isComparable(t.Elem())
+
+	case reflect.Struct:
+		for i := 0; i < t.NumField(); i++ {
+			if !isComparable(t.Field(i).Type) {
+				return false
+			}
+		}
+
+		return true
+
+	case reflect.Slice, reflect.Map, reflect.Func:
+		return false
+	}
+
+	return true
+}
+
+// Should the supplied type be allowed as an argument to IdenticalTo?
+func isLegalForIdenticalTo(t reflect.Type) (bool, error) {
+	// Allow the zero type.
+	if t == nil {
+		return true, nil
+	}
+
+	// Reference types are always okay; we compare pointers.
+	switch t.Kind() {
+	case reflect.Slice, reflect.Map, reflect.Func, reflect.Chan:
+		return true, nil
+	}
+
+	// Reject other non-comparable types.
+	if !isComparable(t) {
+		return false, errors.New(fmt.Sprintf("%v is not comparable", t))
+	}
+
+	return true, nil
+}
+
+// IdenticalTo(x) returns a matcher that matches values v with type identical
+// to x such that:
+//
+//  1. If v and x are of a reference type (slice, map, function, channel), then
+//     they are either both nil or are references to the same object.
+//
+//  2. Otherwise, if v and x are not of a reference type but have a valid type,
+//     then v == x.
+//
+// If v and x are both the invalid type (which results from the predeclared nil
+// value, or from nil interface variables), then the matcher is satisfied.
+//
+// This function will panic if x is of a value type that is not comparable. For
+// example, x cannot be an array of functions.
+func IdenticalTo(x interface{}) Matcher {
+	t := reflect.TypeOf(x)
+
+	// Reject illegal arguments.
+	if ok, err := isLegalForIdenticalTo(t); !ok {
+		panic("IdenticalTo: " + err.Error())
+	}
+
+	return &identicalToMatcher{x}
+}
+
+type identicalToMatcher struct {
+	x interface{}
+}
+
+func (m *identicalToMatcher) Description() string {
+	t := reflect.TypeOf(m.x)
+	return fmt.Sprintf("identical to <%v> %v", t, m.x)
+}
+
+func (m *identicalToMatcher) Matches(c interface{}) error {
+	// Make sure the candidate's type is correct.
+	t := reflect.TypeOf(m.x)
+	if ct := reflect.TypeOf(c); t != ct {
+		return NewFatalError(fmt.Sprintf("which is of type %v", ct))
+	}
+
+	// Special case: two values of the invalid type are always identical.
+	if t == nil {
+		return nil
+	}
+
+	// Handle reference types.
+	switch t.Kind() {
+	case reflect.Slice, reflect.Map, reflect.Func, reflect.Chan:
+		xv := reflect.ValueOf(m.x)
+		cv := reflect.ValueOf(c)
+		if xv.Pointer() == cv.Pointer() {
+			return nil
+		}
+
+		return errors.New("which is not an identical reference")
+	}
+
+	// Are the values equal?
+	if m.x == c {
+		return nil
+	}
+
+	return errors.New("")
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/identical_to_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/identical_to_test.go
new file mode 100644
index 00000000000..cc03b214ad6
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/identical_to_test.go
@@ -0,0 +1,849 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+	"fmt"
+	"io"
+	"unsafe"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type IdenticalToTest struct {
+}
+
+func init() { RegisterTestSuite(&IdenticalToTest{}) }
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *IdenticalToTest) TypesNotIdentical() {
+	var m Matcher
+	var err error
+
+	type intAlias int
+
+	// Type alias expected value
+	m = IdenticalTo(intAlias(17))
+	err = m.Matches(int(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int")))
+
+	// Type alias candidate
+	m = IdenticalTo(int(17))
+	err = m.Matches(intAlias(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.intAlias")))
+
+	// int and uint
+	m = IdenticalTo(int(17))
+	err = m.Matches(uint(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type uint")))
+}
+
+func (t *IdenticalToTest) PredeclaredNilIdentifier() {
+	var m Matcher
+	var err error
+
+	// Nil literal
+	m = IdenticalTo(nil)
+	err = m.Matches(nil)
+	ExpectEq(nil, err)
+
+	// Zero interface var (which is the same as above since IdenticalTo takes an
+	// interface{} as an arg)
+	var nilReader io.Reader
+	var nilWriter io.Writer
+
+	m = IdenticalTo(nilReader)
+	err = m.Matches(nilWriter)
+	ExpectEq(nil, err)
+
+	// Typed nil value.
+	m = IdenticalTo(nil)
+	err = m.Matches((chan int)(nil))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type chan int")))
+
+	// Non-nil value.
+	m = IdenticalTo(nil)
+	err = m.Matches("taco")
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type string")))
+}
+
+func (t *IdenticalToTest) Slices() {
+	var m Matcher
+	var err error
+
+	// Nil expected value
+	m = IdenticalTo(([]int)(nil))
+	ExpectEq("identical to <[]int> []", m.Description())
+
+	err = m.Matches(([]int)(nil))
+	ExpectEq(nil, err)
+
+	err = m.Matches([]int{})
+	ExpectThat(err, Error(Equals("which is not an identical reference")))
+
+	// Non-nil expected value
+	o1 := make([]int, 1)
+	o2 := make([]int, 1)
+	m = IdenticalTo(o1)
+	ExpectEq(fmt.Sprintf("identical to <[]int> %v", o1), m.Description())
+
+	err = m.Matches(o1)
+	ExpectEq(nil, err)
+
+	err = m.Matches(o2)
+	ExpectThat(err, Error(Equals("which is not an identical reference")))
+}
+
+func (t *IdenticalToTest) Maps() {
+	var m Matcher
+	var err error
+
+	// Nil expected value
+	m = IdenticalTo((map[int]int)(nil))
+	ExpectEq("identical to <map[int]int> map[]", m.Description())
+
+	err = m.Matches((map[int]int)(nil))
+	ExpectEq(nil, err)
+
+	err = m.Matches(map[int]int{})
+	ExpectThat(err, Error(Equals("which is not an identical reference")))
+
+	// Non-nil expected value
+	o1 := map[int]int{}
+	o2 := map[int]int{}
+	m = IdenticalTo(o1)
+	ExpectEq(fmt.Sprintf("identical to <map[int]int> %v", o1), m.Description())
+
+	err = m.Matches(o1)
+	ExpectEq(nil, err)
+
+	err = m.Matches(o2)
+	ExpectThat(err, Error(Equals("which is not an identical reference")))
+}
+
+func (t *IdenticalToTest) Functions() {
+	var m Matcher
+	var err error
+
+	// Nil expected value
+	m = IdenticalTo((func())(nil))
+	ExpectEq("identical to <func()> <nil>", m.Description())
+
+	err = m.Matches((func())(nil))
+	ExpectEq(nil, err)
+
+	err = m.Matches(func(){})
+	ExpectThat(err, Error(Equals("which is not an identical reference")))
+
+	// Non-nil expected value
+	o1 := func() {}
+	o2 := func() {}
+	m = IdenticalTo(o1)
+	ExpectEq(fmt.Sprintf("identical to <func()> %v", o1), m.Description())
+
+	err = m.Matches(o1)
+	ExpectEq(nil, err)
+
+	err = m.Matches(o2)
+	ExpectThat(err, Error(Equals("which is not an identical reference")))
+}
+
+func (t *IdenticalToTest) Channels() {
+	var m Matcher
+	var err error
+
+	// Nil expected value
+	m = IdenticalTo((chan int)(nil))
+	ExpectEq("identical to <chan int> <nil>", m.Description())
+
+	err = m.Matches((chan int)(nil))
+	ExpectEq(nil, err)
+
+	err = m.Matches(make(chan int))
+	ExpectThat(err, Error(Equals("which is not an identical reference")))
+
+	// Non-nil expected value
+	o1 := make(chan int)
+	o2 := make(chan int)
+	m = IdenticalTo(o1)
+	ExpectEq(fmt.Sprintf("identical to <chan int> %v", o1), m.Description())
+
+	err = m.Matches(o1)
+	ExpectEq(nil, err)
+
+	err = m.Matches(o2)
+	ExpectThat(err, Error(Equals("which is not an identical reference")))
+}
+
+func (t *IdenticalToTest) Bools() {
+	var m Matcher
+	var err error
+
+	// false
+	m = IdenticalTo(false)
+	ExpectEq("identical to <bool> false", m.Description())
+
+	err = m.Matches(false)
+	ExpectEq(nil, err)
+
+	err = m.Matches(true)
+	ExpectThat(err, Error(Equals("")))
+
+	// true
+	m = IdenticalTo(true)
+	ExpectEq("identical to <bool> true", m.Description())
+
+	err = m.Matches(false)
+	ExpectThat(err, Error(Equals("")))
+
+	err = m.Matches(true)
+	ExpectEq(nil, err)
+}
+
+func (t *IdenticalToTest) Ints() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(int(17))
+	ExpectEq("identical to <int> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(int(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType int
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) Int8s() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(int8(17))
+	ExpectEq("identical to <int8> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(int8(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType int8
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) Int16s() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(int16(17))
+	ExpectEq("identical to <int16> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(int16(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType int16
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) Int32s() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(int32(17))
+	ExpectEq("identical to <int32> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(int32(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType int32
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int16(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int16")))
+}
+
+func (t *IdenticalToTest) Int64s() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(int64(17))
+	ExpectEq("identical to <int64> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(int64(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType int64
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) Uints() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(uint(17))
+	ExpectEq("identical to <uint> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(uint(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType uint
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) Uint8s() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(uint8(17))
+	ExpectEq("identical to <uint8> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(uint8(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType uint8
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) Uint16s() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(uint16(17))
+	ExpectEq("identical to <uint16> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(uint16(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType uint16
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) Uint32s() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(uint32(17))
+	ExpectEq("identical to <uint32> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(uint32(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType uint32
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) Uint64s() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(uint64(17))
+	ExpectEq("identical to <uint64> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(uint64(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType uint64
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) Uintptrs() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(uintptr(17))
+	ExpectEq("identical to <uintptr> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(uintptr(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType uintptr
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) Float32s() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(float32(17))
+	ExpectEq("identical to <float32> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(float32(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType float32
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) Float64s() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(float64(17))
+	ExpectEq("identical to <float64> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(float64(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType float64
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) Complex64s() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(complex64(17))
+	ExpectEq("identical to <complex64> (17+0i)", m.Description())
+
+	// Identical value
+	err = m.Matches(complex64(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType complex64
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) Complex128s() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo(complex128(17))
+	ExpectEq("identical to <complex128> (17+0i)", m.Description())
+
+	// Identical value
+	err = m.Matches(complex128(17))
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType complex128
+	err = m.Matches(myType(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) EmptyComparableArrays() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo([0]int{})
+	ExpectEq("identical to <[0]int> []", m.Description())
+
+	// Identical value
+	err = m.Matches([0]int{})
+	ExpectEq(nil, err)
+
+	// Length too long
+	err = m.Matches([1]int{17})
+	ExpectThat(err, Error(Equals("which is of type [1]int")))
+
+	// Element type alias
+	type myType int
+	err = m.Matches([0]myType{})
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type [0]oglematchers_test.myType")))
+
+	// Completely wrong element type
+	err = m.Matches([0]int32{})
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type [0]int32")))
+}
+
+func (t *IdenticalToTest) NonEmptyComparableArrays() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo([2]int{17, 19})
+	ExpectEq("identical to <[2]int> [17 19]", m.Description())
+
+	// Identical value
+	err = m.Matches([2]int{17, 19})
+	ExpectEq(nil, err)
+
+	// Length too short
+	err = m.Matches([1]int{17})
+	ExpectThat(err, Error(Equals("which is of type [1]int")))
+
+	// Length too long
+	err = m.Matches([3]int{17, 19, 23})
+	ExpectThat(err, Error(Equals("which is of type [3]int")))
+
+	// First element different
+	err = m.Matches([2]int{13, 19})
+	ExpectThat(err, Error(Equals("")))
+
+	// Second element different
+	err = m.Matches([2]int{17, 23})
+	ExpectThat(err, Error(Equals("")))
+
+	// Element type alias
+	type myType int
+	err = m.Matches([2]myType{17, 19})
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type [2]oglematchers_test.myType")))
+
+	// Completely wrong element type
+	err = m.Matches([2]int32{17, 19})
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type [2]int32")))
+}
+
+func (t *IdenticalToTest) NonEmptyArraysOfComparableArrays() {
+	var m Matcher
+	var err error
+
+	x := [2][2]int{
+		[2]int{17, 19},
+		[2]int{23, 29},
+	}
+	m = IdenticalTo(x)
+	ExpectEq("identical to <[2][2]int> [[17 19] [23 29]]", m.Description())
+
+	// Identical value
+	err = m.Matches([2][2]int{[2]int{17, 19}, [2]int{23, 29}})
+	ExpectEq(nil, err)
+
+	// Outer length too short
+	err = m.Matches([1][2]int{[2]int{17, 19}})
+	ExpectThat(err, Error(Equals("which is of type [1][2]int")))
+
+	// Inner length too short
+	err = m.Matches([2][1]int{[1]int{17}, [1]int{23}})
+	ExpectThat(err, Error(Equals("which is of type [2][1]int")))
+
+	// First element different
+	err = m.Matches([2][2]int{[2]int{13, 19}, [2]int{23, 29}})
+	ExpectThat(err, Error(Equals("")))
+
+	// Element type alias
+	type myType int
+	err = m.Matches([2][2]myType{[2]myType{17, 19}, [2]myType{23, 29}})
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type [2][2]oglematchers_test.myType")))
+}
+
+func (t *IdenticalToTest) NonComparableArrays() {
+	x := [0]func(){}
+	f := func() { IdenticalTo(x) }
+	ExpectThat(f, Panics(HasSubstr("is not comparable")))
+}
+
+func (t *IdenticalToTest) ArraysOfNonComparableArrays() {
+	x := [0][0]func(){}
+	f := func() { IdenticalTo(x) }
+	ExpectThat(f, Panics(HasSubstr("is not comparable")))
+}
+
+func (t *IdenticalToTest) Strings() {
+	var m Matcher
+	var err error
+
+	m = IdenticalTo("taco")
+	ExpectEq("identical to <string> taco", m.Description())
+
+	// Identical value
+	err = m.Matches("ta" + "co")
+	ExpectEq(nil, err)
+
+	// Type alias
+	type myType string
+	err = m.Matches(myType("taco"))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) ComparableStructs() {
+	var m Matcher
+	var err error
+
+	type subStruct struct {
+		i int
+	}
+
+	type myStruct struct {
+		u uint
+		s subStruct
+	}
+
+	x := myStruct{17, subStruct{19}}
+	m = IdenticalTo(x)
+	ExpectEq("identical to <oglematchers_test.myStruct> {17 {19}}", m.Description())
+
+	// Identical value
+	err = m.Matches(myStruct{17, subStruct{19}})
+	ExpectEq(nil, err)
+
+	// Wrong outer field
+	err = m.Matches(myStruct{13, subStruct{19}})
+	ExpectThat(err, Error(Equals("")))
+
+	// Wrong inner field
+	err = m.Matches(myStruct{17, subStruct{23}})
+	ExpectThat(err, Error(Equals("")))
+
+	// Type alias
+	type myType myStruct
+	err = m.Matches(myType{17, subStruct{19}})
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) NonComparableStructs() {
+	type subStruct struct {
+		s []int
+	}
+
+	type myStruct struct {
+		u uint
+		s subStruct
+	}
+
+	x := myStruct{17, subStruct{[]int{19}}}
+	f := func() { IdenticalTo(x) }
+	ExpectThat(f, Panics(AllOf(HasSubstr("IdenticalTo"), HasSubstr("comparable"))))
+}
+
+func (t *IdenticalToTest) NilUnsafePointer() {
+	var m Matcher
+	var err error
+
+	x := unsafe.Pointer(nil)
+	m = IdenticalTo(x)
+	ExpectEq(fmt.Sprintf("identical to <unsafe.Pointer> %v", x), m.Description())
+
+	// Identical value
+	err = m.Matches(unsafe.Pointer(nil))
+	ExpectEq(nil, err)
+
+	// Wrong value
+	j := 17
+	err = m.Matches(unsafe.Pointer(&j))
+	ExpectThat(err, Error(Equals("")))
+
+	// Type alias
+	type myType unsafe.Pointer
+	err = m.Matches(myType(unsafe.Pointer(nil)))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) NonNilUnsafePointer() {
+	var m Matcher
+	var err error
+
+	i := 17
+	x := unsafe.Pointer(&i)
+	m = IdenticalTo(x)
+	ExpectEq(fmt.Sprintf("identical to <unsafe.Pointer> %v", x), m.Description())
+
+	// Identical value
+	err = m.Matches(unsafe.Pointer(&i))
+	ExpectEq(nil, err)
+
+	// Nil value
+	err = m.Matches(unsafe.Pointer(nil))
+	ExpectThat(err, Error(Equals("")))
+
+	// Wrong value
+	j := 17
+	err = m.Matches(unsafe.Pointer(&j))
+	ExpectThat(err, Error(Equals("")))
+
+	// Type alias
+	type myType unsafe.Pointer
+	err = m.Matches(myType(unsafe.Pointer(&i)))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type oglematchers_test.myType")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
+
+func (t *IdenticalToTest) IntAlias() {
+	var m Matcher
+	var err error
+
+	type intAlias int
+
+	m = IdenticalTo(intAlias(17))
+	ExpectEq("identical to <oglematchers_test.intAlias> 17", m.Description())
+
+	// Identical value
+	err = m.Matches(intAlias(17))
+	ExpectEq(nil, err)
+
+	// Int
+	err = m.Matches(int(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int")))
+
+	// Completely wrong type
+	err = m.Matches(int32(17))
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("which is of type int32")))
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/less_or_equal.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/less_or_equal.go
new file mode 100644
index 00000000000..8402cdeaf09
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/less_or_equal.go
@@ -0,0 +1,41 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// LessOrEqual returns a matcher that matches integer, floating point, or
+// strings values v such that v <= x. Comparison is not defined between numeric
+// and string types, but is defined between all integer and floating point
+// types.
+//
+// x must itself be an integer, floating point, or string type; otherwise,
+// LessOrEqual will panic.
+func LessOrEqual(x interface{}) Matcher {
+	desc := fmt.Sprintf("less than or equal to %v", x)
+
+	// Special case: make it clear that strings are strings.
+	if reflect.TypeOf(x).Kind() == reflect.String {
+		desc = fmt.Sprintf("less than or equal to \"%s\"", x)
+	}
+
+	// Put LessThan last so that its error messages will be used in the event of
+	// failure.
+	return transformDescription(AnyOf(Equals(x), LessThan(x)), desc)
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/less_or_equal_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/less_or_equal_test.go
new file mode 100644
index 00000000000..a1a2ae7d60e
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/less_or_equal_test.go
@@ -0,0 +1,1077 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	"math"
+
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type LessOrEqualTest struct {
+}
+
+func init() { RegisterTestSuite(&LessOrEqualTest{}) }
+
+type leTestCase struct {
+	candidate      interface{}
+	expectedResult bool
+	shouldBeFatal  bool
+	expectedError  string
+}
+
+func (t *LessOrEqualTest) checkTestCases(matcher Matcher, cases []leTestCase) {
+	for i, c := range cases {
+		err := matcher.Matches(c.candidate)
+
+		ExpectThat(
+			(err == nil),
+			Equals(c.expectedResult),
+			"Case %d (candidate %v)",
+			i,
+			c.candidate)
+
+		if err == nil {
+			continue
+		}
+
+		_, isFatal := err.(*FatalError)
+		ExpectEq(
+			c.shouldBeFatal,
+			isFatal,
+			"Case %d (candidate %v)",
+			i,
+			c.candidate)
+
+		ExpectThat(
+			err,
+			Error(Equals(c.expectedError)),
+			"Case %d (candidate %v)",
+			i,
+			c.candidate)
+	}
+}
+
+////////////////////////////////////////////////////////////////////////
+// Integer literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *LessOrEqualTest) IntegerCandidateBadTypes() {
+	matcher := LessOrEqual(int(-150))
+
+	cases := []leTestCase{
+		leTestCase{true, false, true, "which is not comparable"},
+		leTestCase{complex64(-151), false, true, "which is not comparable"},
+		leTestCase{complex128(-151), false, true, "which is not comparable"},
+		leTestCase{[...]int{-151}, false, true, "which is not comparable"},
+		leTestCase{make(chan int), false, true, "which is not comparable"},
+		leTestCase{func() {}, false, true, "which is not comparable"},
+		leTestCase{map[int]int{}, false, true, "which is not comparable"},
+		leTestCase{&leTestCase{}, false, true, "which is not comparable"},
+		leTestCase{make([]int, 0), false, true, "which is not comparable"},
+		leTestCase{"-151", false, true, "which is not comparable"},
+		leTestCase{leTestCase{}, false, true, "which is not comparable"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessOrEqualTest) FloatCandidateBadTypes() {
+	matcher := LessOrEqual(float32(-150))
+
+	cases := []leTestCase{
+		leTestCase{true, false, true, "which is not comparable"},
+		leTestCase{complex64(-151), false, true, "which is not comparable"},
+		leTestCase{complex128(-151), false, true, "which is not comparable"},
+		leTestCase{[...]int{-151}, false, true, "which is not comparable"},
+		leTestCase{make(chan int), false, true, "which is not comparable"},
+		leTestCase{func() {}, false, true, "which is not comparable"},
+		leTestCase{map[int]int{}, false, true, "which is not comparable"},
+		leTestCase{&leTestCase{}, false, true, "which is not comparable"},
+		leTestCase{make([]int, 0), false, true, "which is not comparable"},
+		leTestCase{"-151", false, true, "which is not comparable"},
+		leTestCase{leTestCase{}, false, true, "which is not comparable"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessOrEqualTest) StringCandidateBadTypes() {
+	matcher := LessOrEqual("17")
+
+	cases := []leTestCase{
+		leTestCase{true, false, true, "which is not comparable"},
+		leTestCase{int(0), false, true, "which is not comparable"},
+		leTestCase{int8(0), false, true, "which is not comparable"},
+		leTestCase{int16(0), false, true, "which is not comparable"},
+		leTestCase{int32(0), false, true, "which is not comparable"},
+		leTestCase{int64(0), false, true, "which is not comparable"},
+		leTestCase{uint(0), false, true, "which is not comparable"},
+		leTestCase{uint8(0), false, true, "which is not comparable"},
+		leTestCase{uint16(0), false, true, "which is not comparable"},
+		leTestCase{uint32(0), false, true, "which is not comparable"},
+		leTestCase{uint64(0), false, true, "which is not comparable"},
+		leTestCase{float32(0), false, true, "which is not comparable"},
+		leTestCase{float64(0), false, true, "which is not comparable"},
+		leTestCase{complex64(-151), false, true, "which is not comparable"},
+		leTestCase{complex128(-151), false, true, "which is not comparable"},
+		leTestCase{[...]int{-151}, false, true, "which is not comparable"},
+		leTestCase{make(chan int), false, true, "which is not comparable"},
+		leTestCase{func() {}, false, true, "which is not comparable"},
+		leTestCase{map[int]int{}, false, true, "which is not comparable"},
+		leTestCase{&leTestCase{}, false, true, "which is not comparable"},
+		leTestCase{make([]int, 0), false, true, "which is not comparable"},
+		leTestCase{leTestCase{}, false, true, "which is not comparable"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessOrEqualTest) BadArgument() {
+	panicked := false
+
+	defer func() {
+		ExpectThat(panicked, Equals(true))
+	}()
+
+	defer func() {
+		if r := recover(); r != nil {
+			panicked = true
+		}
+	}()
+
+	LessOrEqual(complex128(0))
+}
+
+////////////////////////////////////////////////////////////////////////
+// Integer literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *LessOrEqualTest) NegativeIntegerLiteral() {
+	matcher := LessOrEqual(-150)
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to -150"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		// Signed integers.
+		leTestCase{-(1 << 30), true, false, ""},
+		leTestCase{-151, true, false, ""},
+		leTestCase{-150, true, false, ""},
+		leTestCase{-149, false, false, ""},
+		leTestCase{0, false, false, ""},
+		leTestCase{17, false, false, ""},
+
+		leTestCase{int(-(1 << 30)), true, false, ""},
+		leTestCase{int(-151), true, false, ""},
+		leTestCase{int(-150), true, false, ""},
+		leTestCase{int(-149), false, false, ""},
+		leTestCase{int(0), false, false, ""},
+		leTestCase{int(17), false, false, ""},
+
+		leTestCase{int8(-127), false, false, ""},
+		leTestCase{int8(0), false, false, ""},
+		leTestCase{int8(17), false, false, ""},
+
+		leTestCase{int16(-(1 << 14)), true, false, ""},
+		leTestCase{int16(-151), true, false, ""},
+		leTestCase{int16(-150), true, false, ""},
+		leTestCase{int16(-149), false, false, ""},
+		leTestCase{int16(0), false, false, ""},
+		leTestCase{int16(17), false, false, ""},
+
+		leTestCase{int32(-(1 << 30)), true, false, ""},
+		leTestCase{int32(-151), true, false, ""},
+		leTestCase{int32(-150), true, false, ""},
+		leTestCase{int32(-149), false, false, ""},
+		leTestCase{int32(0), false, false, ""},
+		leTestCase{int32(17), false, false, ""},
+
+		leTestCase{int64(-(1 << 30)), true, false, ""},
+		leTestCase{int64(-151), true, false, ""},
+		leTestCase{int64(-150), true, false, ""},
+		leTestCase{int64(-149), false, false, ""},
+		leTestCase{int64(0), false, false, ""},
+		leTestCase{int64(17), false, false, ""},
+
+		// Unsigned integers.
+		leTestCase{uint((1 << 32) - 151), false, false, ""},
+		leTestCase{uint(0), false, false, ""},
+		leTestCase{uint(17), false, false, ""},
+
+		leTestCase{uint8(0), false, false, ""},
+		leTestCase{uint8(17), false, false, ""},
+		leTestCase{uint8(253), false, false, ""},
+
+		leTestCase{uint16((1 << 16) - 151), false, false, ""},
+		leTestCase{uint16(0), false, false, ""},
+		leTestCase{uint16(17), false, false, ""},
+
+		leTestCase{uint32((1 << 32) - 151), false, false, ""},
+		leTestCase{uint32(0), false, false, ""},
+		leTestCase{uint32(17), false, false, ""},
+
+		leTestCase{uint64((1 << 64) - 151), false, false, ""},
+		leTestCase{uint64(0), false, false, ""},
+		leTestCase{uint64(17), false, false, ""},
+
+		// Floating point.
+		leTestCase{float32(-(1 << 30)), true, false, ""},
+		leTestCase{float32(-151), true, false, ""},
+		leTestCase{float32(-150.1), true, false, ""},
+		leTestCase{float32(-150), true, false, ""},
+		leTestCase{float32(-149.9), false, false, ""},
+		leTestCase{float32(0), false, false, ""},
+		leTestCase{float32(17), false, false, ""},
+		leTestCase{float32(160), false, false, ""},
+
+		leTestCase{float64(-(1 << 30)), true, false, ""},
+		leTestCase{float64(-151), true, false, ""},
+		leTestCase{float64(-150.1), true, false, ""},
+		leTestCase{float64(-150), true, false, ""},
+		leTestCase{float64(-149.9), false, false, ""},
+		leTestCase{float64(0), false, false, ""},
+		leTestCase{float64(17), false, false, ""},
+		leTestCase{float64(160), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessOrEqualTest) ZeroIntegerLiteral() {
+	matcher := LessOrEqual(0)
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to 0"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		// Signed integers.
+		leTestCase{-(1 << 30), true, false, ""},
+		leTestCase{-1, true, false, ""},
+		leTestCase{0, true, false, ""},
+		leTestCase{1, false, false, ""},
+		leTestCase{17, false, false, ""},
+		leTestCase{(1 << 30), false, false, ""},
+
+		leTestCase{int(-(1 << 30)), true, false, ""},
+		leTestCase{int(-1), true, false, ""},
+		leTestCase{int(0), true, false, ""},
+		leTestCase{int(1), false, false, ""},
+		leTestCase{int(17), false, false, ""},
+
+		leTestCase{int8(-1), true, false, ""},
+		leTestCase{int8(0), true, false, ""},
+		leTestCase{int8(1), false, false, ""},
+
+		leTestCase{int16(-(1 << 14)), true, false, ""},
+		leTestCase{int16(-1), true, false, ""},
+		leTestCase{int16(0), true, false, ""},
+		leTestCase{int16(1), false, false, ""},
+		leTestCase{int16(17), false, false, ""},
+
+		leTestCase{int32(-(1 << 30)), true, false, ""},
+		leTestCase{int32(-1), true, false, ""},
+		leTestCase{int32(0), true, false, ""},
+		leTestCase{int32(1), false, false, ""},
+		leTestCase{int32(17), false, false, ""},
+
+		leTestCase{int64(-(1 << 30)), true, false, ""},
+		leTestCase{int64(-1), true, false, ""},
+		leTestCase{int64(0), true, false, ""},
+		leTestCase{int64(1), false, false, ""},
+		leTestCase{int64(17), false, false, ""},
+
+		// Unsigned integers.
+		leTestCase{uint((1 << 32) - 1), false, false, ""},
+		leTestCase{uint(0), true, false, ""},
+		leTestCase{uint(1), false, false, ""},
+		leTestCase{uint(17), false, false, ""},
+
+		leTestCase{uint8(0), true, false, ""},
+		leTestCase{uint8(1), false, false, ""},
+		leTestCase{uint8(17), false, false, ""},
+		leTestCase{uint8(253), false, false, ""},
+
+		leTestCase{uint16((1 << 16) - 1), false, false, ""},
+		leTestCase{uint16(0), true, false, ""},
+		leTestCase{uint16(1), false, false, ""},
+		leTestCase{uint16(17), false, false, ""},
+
+		leTestCase{uint32((1 << 32) - 1), false, false, ""},
+		leTestCase{uint32(0), true, false, ""},
+		leTestCase{uint32(1), false, false, ""},
+		leTestCase{uint32(17), false, false, ""},
+
+		leTestCase{uint64((1 << 64) - 1), false, false, ""},
+		leTestCase{uint64(0), true, false, ""},
+		leTestCase{uint64(1), false, false, ""},
+		leTestCase{uint64(17), false, false, ""},
+
+		// Floating point.
+		leTestCase{float32(-(1 << 30)), true, false, ""},
+		leTestCase{float32(-1), true, false, ""},
+		leTestCase{float32(-0.1), true, false, ""},
+		leTestCase{float32(-0.0), true, false, ""},
+		leTestCase{float32(0), true, false, ""},
+		leTestCase{float32(0.1), false, false, ""},
+		leTestCase{float32(17), false, false, ""},
+		leTestCase{float32(160), false, false, ""},
+
+		leTestCase{float64(-(1 << 30)), true, false, ""},
+		leTestCase{float64(-1), true, false, ""},
+		leTestCase{float64(-0.1), true, false, ""},
+		leTestCase{float64(-0), true, false, ""},
+		leTestCase{float64(0), true, false, ""},
+		leTestCase{float64(0.1), false, false, ""},
+		leTestCase{float64(17), false, false, ""},
+		leTestCase{float64(160), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessOrEqualTest) PositiveIntegerLiteral() {
+	matcher := LessOrEqual(150)
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to 150"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		// Signed integers.
+		leTestCase{-1, true, false, ""},
+		leTestCase{149, true, false, ""},
+		leTestCase{150, true, false, ""},
+		leTestCase{151, false, false, ""},
+
+		leTestCase{int(-1), true, false, ""},
+		leTestCase{int(149), true, false, ""},
+		leTestCase{int(150), true, false, ""},
+		leTestCase{int(151), false, false, ""},
+
+		leTestCase{int8(-1), true, false, ""},
+		leTestCase{int8(0), true, false, ""},
+		leTestCase{int8(17), true, false, ""},
+		leTestCase{int8(127), true, false, ""},
+
+		leTestCase{int16(-1), true, false, ""},
+		leTestCase{int16(149), true, false, ""},
+		leTestCase{int16(150), true, false, ""},
+		leTestCase{int16(151), false, false, ""},
+
+		leTestCase{int32(-1), true, false, ""},
+		leTestCase{int32(149), true, false, ""},
+		leTestCase{int32(150), true, false, ""},
+		leTestCase{int32(151), false, false, ""},
+
+		leTestCase{int64(-1), true, false, ""},
+		leTestCase{int64(149), true, false, ""},
+		leTestCase{int64(150), true, false, ""},
+		leTestCase{int64(151), false, false, ""},
+
+		// Unsigned integers.
+		leTestCase{uint(0), true, false, ""},
+		leTestCase{uint(149), true, false, ""},
+		leTestCase{uint(150), true, false, ""},
+		leTestCase{uint(151), false, false, ""},
+
+		leTestCase{uint8(0), true, false, ""},
+		leTestCase{uint8(127), true, false, ""},
+
+		leTestCase{uint16(0), true, false, ""},
+		leTestCase{uint16(149), true, false, ""},
+		leTestCase{uint16(150), true, false, ""},
+		leTestCase{uint16(151), false, false, ""},
+
+		leTestCase{uint32(0), true, false, ""},
+		leTestCase{uint32(149), true, false, ""},
+		leTestCase{uint32(150), true, false, ""},
+		leTestCase{uint32(151), false, false, ""},
+
+		leTestCase{uint64(0), true, false, ""},
+		leTestCase{uint64(149), true, false, ""},
+		leTestCase{uint64(150), true, false, ""},
+		leTestCase{uint64(151), false, false, ""},
+
+		// Floating point.
+		leTestCase{float32(-1), true, false, ""},
+		leTestCase{float32(149), true, false, ""},
+		leTestCase{float32(149.9), true, false, ""},
+		leTestCase{float32(150), true, false, ""},
+		leTestCase{float32(150.1), false, false, ""},
+		leTestCase{float32(151), false, false, ""},
+
+		leTestCase{float64(-1), true, false, ""},
+		leTestCase{float64(149), true, false, ""},
+		leTestCase{float64(149.9), true, false, ""},
+		leTestCase{float64(150), true, false, ""},
+		leTestCase{float64(150.1), false, false, ""},
+		leTestCase{float64(151), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Float literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *LessOrEqualTest) NegativeFloatLiteral() {
+	matcher := LessOrEqual(-150.1)
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to -150.1"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		// Signed integers.
+		leTestCase{-(1 << 30), true, false, ""},
+		leTestCase{-151, true, false, ""},
+		leTestCase{-150.1, true, false, ""},
+		leTestCase{-150, false, false, ""},
+		leTestCase{-149, false, false, ""},
+		leTestCase{0, false, false, ""},
+		leTestCase{17, false, false, ""},
+
+		leTestCase{int(-(1 << 30)), true, false, ""},
+		leTestCase{int(-151), true, false, ""},
+		leTestCase{int(-150), false, false, ""},
+		leTestCase{int(-149), false, false, ""},
+		leTestCase{int(0), false, false, ""},
+		leTestCase{int(17), false, false, ""},
+
+		leTestCase{int8(-127), false, false, ""},
+		leTestCase{int8(0), false, false, ""},
+		leTestCase{int8(17), false, false, ""},
+
+		leTestCase{int16(-(1 << 14)), true, false, ""},
+		leTestCase{int16(-151), true, false, ""},
+		leTestCase{int16(-150), false, false, ""},
+		leTestCase{int16(-149), false, false, ""},
+		leTestCase{int16(0), false, false, ""},
+		leTestCase{int16(17), false, false, ""},
+
+		leTestCase{int32(-(1 << 30)), true, false, ""},
+		leTestCase{int32(-151), true, false, ""},
+		leTestCase{int32(-150), false, false, ""},
+		leTestCase{int32(-149), false, false, ""},
+		leTestCase{int32(0), false, false, ""},
+		leTestCase{int32(17), false, false, ""},
+
+		leTestCase{int64(-(1 << 30)), true, false, ""},
+		leTestCase{int64(-151), true, false, ""},
+		leTestCase{int64(-150), false, false, ""},
+		leTestCase{int64(-149), false, false, ""},
+		leTestCase{int64(0), false, false, ""},
+		leTestCase{int64(17), false, false, ""},
+
+		// Unsigned integers.
+		leTestCase{uint((1 << 32) - 151), false, false, ""},
+		leTestCase{uint(0), false, false, ""},
+		leTestCase{uint(17), false, false, ""},
+
+		leTestCase{uint8(0), false, false, ""},
+		leTestCase{uint8(17), false, false, ""},
+		leTestCase{uint8(253), false, false, ""},
+
+		leTestCase{uint16((1 << 16) - 151), false, false, ""},
+		leTestCase{uint16(0), false, false, ""},
+		leTestCase{uint16(17), false, false, ""},
+
+		leTestCase{uint32((1 << 32) - 151), false, false, ""},
+		leTestCase{uint32(0), false, false, ""},
+		leTestCase{uint32(17), false, false, ""},
+
+		leTestCase{uint64((1 << 64) - 151), false, false, ""},
+		leTestCase{uint64(0), false, false, ""},
+		leTestCase{uint64(17), false, false, ""},
+
+		// Floating point.
+		leTestCase{float32(-(1 << 30)), true, false, ""},
+		leTestCase{float32(-151), true, false, ""},
+		leTestCase{float32(-150.2), true, false, ""},
+		leTestCase{float32(-150.1), true, false, ""},
+		leTestCase{float32(-150), false, false, ""},
+		leTestCase{float32(0), false, false, ""},
+		leTestCase{float32(17), false, false, ""},
+		leTestCase{float32(160), false, false, ""},
+
+		leTestCase{float64(-(1 << 30)), true, false, ""},
+		leTestCase{float64(-151), true, false, ""},
+		leTestCase{float64(-150.2), true, false, ""},
+		leTestCase{float64(-150.1), true, false, ""},
+		leTestCase{float64(-150), false, false, ""},
+		leTestCase{float64(0), false, false, ""},
+		leTestCase{float64(17), false, false, ""},
+		leTestCase{float64(160), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessOrEqualTest) PositiveFloatLiteral() {
+	matcher := LessOrEqual(149.9)
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to 149.9"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		// Signed integers.
+		leTestCase{-1, true, false, ""},
+		leTestCase{149, true, false, ""},
+		leTestCase{149.9, true, false, ""},
+		leTestCase{150, false, false, ""},
+		leTestCase{151, false, false, ""},
+
+		leTestCase{int(-1), true, false, ""},
+		leTestCase{int(149), true, false, ""},
+		leTestCase{int(150), false, false, ""},
+		leTestCase{int(151), false, false, ""},
+
+		leTestCase{int8(-1), true, false, ""},
+		leTestCase{int8(0), true, false, ""},
+		leTestCase{int8(17), true, false, ""},
+		leTestCase{int8(127), true, false, ""},
+
+		leTestCase{int16(-1), true, false, ""},
+		leTestCase{int16(149), true, false, ""},
+		leTestCase{int16(150), false, false, ""},
+		leTestCase{int16(151), false, false, ""},
+
+		leTestCase{int32(-1), true, false, ""},
+		leTestCase{int32(149), true, false, ""},
+		leTestCase{int32(150), false, false, ""},
+		leTestCase{int32(151), false, false, ""},
+
+		leTestCase{int64(-1), true, false, ""},
+		leTestCase{int64(149), true, false, ""},
+		leTestCase{int64(150), false, false, ""},
+		leTestCase{int64(151), false, false, ""},
+
+		// Unsigned integers.
+		leTestCase{uint(0), true, false, ""},
+		leTestCase{uint(149), true, false, ""},
+		leTestCase{uint(150), false, false, ""},
+		leTestCase{uint(151), false, false, ""},
+
+		leTestCase{uint8(0), true, false, ""},
+		leTestCase{uint8(127), true, false, ""},
+
+		leTestCase{uint16(0), true, false, ""},
+		leTestCase{uint16(149), true, false, ""},
+		leTestCase{uint16(150), false, false, ""},
+		leTestCase{uint16(151), false, false, ""},
+
+		leTestCase{uint32(0), true, false, ""},
+		leTestCase{uint32(149), true, false, ""},
+		leTestCase{uint32(150), false, false, ""},
+		leTestCase{uint32(151), false, false, ""},
+
+		leTestCase{uint64(0), true, false, ""},
+		leTestCase{uint64(149), true, false, ""},
+		leTestCase{uint64(150), false, false, ""},
+		leTestCase{uint64(151), false, false, ""},
+
+		// Floating point.
+		leTestCase{float32(-1), true, false, ""},
+		leTestCase{float32(149), true, false, ""},
+		leTestCase{float32(149.8), true, false, ""},
+		leTestCase{float32(149.9), true, false, ""},
+		leTestCase{float32(150), false, false, ""},
+		leTestCase{float32(151), false, false, ""},
+
+		leTestCase{float64(-1), true, false, ""},
+		leTestCase{float64(149), true, false, ""},
+		leTestCase{float64(149.8), true, false, ""},
+		leTestCase{float64(149.9), true, false, ""},
+		leTestCase{float64(150), false, false, ""},
+		leTestCase{float64(151), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Subtle cases
+////////////////////////////////////////////////////////////////////////
+
+func (t *LessOrEqualTest) Int64NotExactlyRepresentableBySinglePrecision() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := LessOrEqual(int64(kTwoTo25 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to 33554433"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		// Signed integers.
+		leTestCase{-1, true, false, ""},
+		leTestCase{kTwoTo25 + 0, true, false, ""},
+		leTestCase{kTwoTo25 + 1, true, false, ""},
+		leTestCase{kTwoTo25 + 2, false, false, ""},
+
+		leTestCase{int(-1), true, false, ""},
+		leTestCase{int(kTwoTo25 + 0), true, false, ""},
+		leTestCase{int(kTwoTo25 + 1), true, false, ""},
+		leTestCase{int(kTwoTo25 + 2), false, false, ""},
+
+		leTestCase{int8(-1), true, false, ""},
+		leTestCase{int8(127), true, false, ""},
+
+		leTestCase{int16(-1), true, false, ""},
+		leTestCase{int16(0), true, false, ""},
+		leTestCase{int16(32767), true, false, ""},
+
+		leTestCase{int32(-1), true, false, ""},
+		leTestCase{int32(kTwoTo25 + 0), true, false, ""},
+		leTestCase{int32(kTwoTo25 + 1), true, false, ""},
+		leTestCase{int32(kTwoTo25 + 2), false, false, ""},
+
+		leTestCase{int64(-1), true, false, ""},
+		leTestCase{int64(kTwoTo25 + 0), true, false, ""},
+		leTestCase{int64(kTwoTo25 + 1), true, false, ""},
+		leTestCase{int64(kTwoTo25 + 2), false, false, ""},
+
+		// Unsigned integers.
+		leTestCase{uint(0), true, false, ""},
+		leTestCase{uint(kTwoTo25 + 0), true, false, ""},
+		leTestCase{uint(kTwoTo25 + 1), true, false, ""},
+		leTestCase{uint(kTwoTo25 + 2), false, false, ""},
+
+		leTestCase{uint8(0), true, false, ""},
+		leTestCase{uint8(255), true, false, ""},
+
+		leTestCase{uint16(0), true, false, ""},
+		leTestCase{uint16(65535), true, false, ""},
+
+		leTestCase{uint32(0), true, false, ""},
+		leTestCase{uint32(kTwoTo25 + 0), true, false, ""},
+		leTestCase{uint32(kTwoTo25 + 1), true, false, ""},
+		leTestCase{uint32(kTwoTo25 + 2), false, false, ""},
+
+		leTestCase{uint64(0), true, false, ""},
+		leTestCase{uint64(kTwoTo25 + 0), true, false, ""},
+		leTestCase{uint64(kTwoTo25 + 1), true, false, ""},
+		leTestCase{uint64(kTwoTo25 + 2), false, false, ""},
+
+		// Floating point.
+		leTestCase{float32(-1), true, false, ""},
+		leTestCase{float32(kTwoTo25 - 2), true, false, ""},
+		leTestCase{float32(kTwoTo25 - 1), true, false, ""},
+		leTestCase{float32(kTwoTo25 + 0), true, false, ""},
+		leTestCase{float32(kTwoTo25 + 1), true, false, ""},
+		leTestCase{float32(kTwoTo25 + 2), true, false, ""},
+		leTestCase{float32(kTwoTo25 + 3), false, false, ""},
+
+		leTestCase{float64(-1), true, false, ""},
+		leTestCase{float64(kTwoTo25 - 2), true, false, ""},
+		leTestCase{float64(kTwoTo25 - 1), true, false, ""},
+		leTestCase{float64(kTwoTo25 + 0), true, false, ""},
+		leTestCase{float64(kTwoTo25 + 1), true, false, ""},
+		leTestCase{float64(kTwoTo25 + 2), false, false, ""},
+		leTestCase{float64(kTwoTo25 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessOrEqualTest) Int64NotExactlyRepresentableByDoublePrecision() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := LessOrEqual(int64(kTwoTo54 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to 18014398509481985"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		// Signed integers.
+		leTestCase{-1, true, false, ""},
+		leTestCase{1 << 30, true, false, ""},
+
+		leTestCase{int(-1), true, false, ""},
+		leTestCase{int(math.MaxInt32), true, false, ""},
+
+		leTestCase{int8(-1), true, false, ""},
+		leTestCase{int8(127), true, false, ""},
+
+		leTestCase{int16(-1), true, false, ""},
+		leTestCase{int16(0), true, false, ""},
+		leTestCase{int16(32767), true, false, ""},
+
+		leTestCase{int32(-1), true, false, ""},
+		leTestCase{int32(math.MaxInt32), true, false, ""},
+
+		leTestCase{int64(-1), true, false, ""},
+		leTestCase{int64(kTwoTo54 - 1), true, false, ""},
+		leTestCase{int64(kTwoTo54 + 0), true, false, ""},
+		leTestCase{int64(kTwoTo54 + 1), true, false, ""},
+		leTestCase{int64(kTwoTo54 + 2), false, false, ""},
+
+		// Unsigned integers.
+		leTestCase{uint(0), true, false, ""},
+		leTestCase{uint(math.MaxUint32), true, false, ""},
+
+		leTestCase{uint8(0), true, false, ""},
+		leTestCase{uint8(255), true, false, ""},
+
+		leTestCase{uint16(0), true, false, ""},
+		leTestCase{uint16(65535), true, false, ""},
+
+		leTestCase{uint32(0), true, false, ""},
+		leTestCase{uint32(math.MaxUint32), true, false, ""},
+
+		leTestCase{uint64(0), true, false, ""},
+		leTestCase{uint64(kTwoTo54 - 1), true, false, ""},
+		leTestCase{uint64(kTwoTo54 + 0), true, false, ""},
+		leTestCase{uint64(kTwoTo54 + 1), true, false, ""},
+		leTestCase{uint64(kTwoTo54 + 2), false, false, ""},
+
+		// Floating point.
+		leTestCase{float64(-1), true, false, ""},
+		leTestCase{float64(kTwoTo54 - 2), true, false, ""},
+		leTestCase{float64(kTwoTo54 - 1), true, false, ""},
+		leTestCase{float64(kTwoTo54 + 0), true, false, ""},
+		leTestCase{float64(kTwoTo54 + 1), true, false, ""},
+		leTestCase{float64(kTwoTo54 + 2), true, false, ""},
+		leTestCase{float64(kTwoTo54 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessOrEqualTest) Uint64NotExactlyRepresentableBySinglePrecision() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := LessOrEqual(uint64(kTwoTo25 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to 33554433"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		// Signed integers.
+		leTestCase{-1, true, false, ""},
+		leTestCase{kTwoTo25 + 0, true, false, ""},
+		leTestCase{kTwoTo25 + 1, true, false, ""},
+		leTestCase{kTwoTo25 + 2, false, false, ""},
+
+		leTestCase{int(-1), true, false, ""},
+		leTestCase{int(kTwoTo25 + 0), true, false, ""},
+		leTestCase{int(kTwoTo25 + 1), true, false, ""},
+		leTestCase{int(kTwoTo25 + 2), false, false, ""},
+
+		leTestCase{int8(-1), true, false, ""},
+		leTestCase{int8(127), true, false, ""},
+
+		leTestCase{int16(-1), true, false, ""},
+		leTestCase{int16(0), true, false, ""},
+		leTestCase{int16(32767), true, false, ""},
+
+		leTestCase{int32(-1), true, false, ""},
+		leTestCase{int32(kTwoTo25 + 0), true, false, ""},
+		leTestCase{int32(kTwoTo25 + 1), true, false, ""},
+		leTestCase{int32(kTwoTo25 + 2), false, false, ""},
+
+		leTestCase{int64(-1), true, false, ""},
+		leTestCase{int64(kTwoTo25 + 0), true, false, ""},
+		leTestCase{int64(kTwoTo25 + 1), true, false, ""},
+		leTestCase{int64(kTwoTo25 + 2), false, false, ""},
+
+		// Unsigned integers.
+		leTestCase{uint(0), true, false, ""},
+		leTestCase{uint(kTwoTo25 + 0), true, false, ""},
+		leTestCase{uint(kTwoTo25 + 1), true, false, ""},
+		leTestCase{uint(kTwoTo25 + 2), false, false, ""},
+
+		leTestCase{uint8(0), true, false, ""},
+		leTestCase{uint8(255), true, false, ""},
+
+		leTestCase{uint16(0), true, false, ""},
+		leTestCase{uint16(65535), true, false, ""},
+
+		leTestCase{uint32(0), true, false, ""},
+		leTestCase{uint32(kTwoTo25 + 0), true, false, ""},
+		leTestCase{uint32(kTwoTo25 + 1), true, false, ""},
+		leTestCase{uint32(kTwoTo25 + 2), false, false, ""},
+
+		leTestCase{uint64(0), true, false, ""},
+		leTestCase{uint64(kTwoTo25 + 0), true, false, ""},
+		leTestCase{uint64(kTwoTo25 + 1), true, false, ""},
+		leTestCase{uint64(kTwoTo25 + 2), false, false, ""},
+
+		// Floating point.
+		leTestCase{float32(-1), true, false, ""},
+		leTestCase{float32(kTwoTo25 - 2), true, false, ""},
+		leTestCase{float32(kTwoTo25 - 1), true, false, ""},
+		leTestCase{float32(kTwoTo25 + 0), true, false, ""},
+		leTestCase{float32(kTwoTo25 + 1), true, false, ""},
+		leTestCase{float32(kTwoTo25 + 2), true, false, ""},
+		leTestCase{float32(kTwoTo25 + 3), false, false, ""},
+
+		leTestCase{float64(-1), true, false, ""},
+		leTestCase{float64(kTwoTo25 - 2), true, false, ""},
+		leTestCase{float64(kTwoTo25 - 1), true, false, ""},
+		leTestCase{float64(kTwoTo25 + 0), true, false, ""},
+		leTestCase{float64(kTwoTo25 + 1), true, false, ""},
+		leTestCase{float64(kTwoTo25 + 2), false, false, ""},
+		leTestCase{float64(kTwoTo25 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessOrEqualTest) Uint64NotExactlyRepresentableByDoublePrecision() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := LessOrEqual(uint64(kTwoTo54 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to 18014398509481985"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		// Signed integers.
+		leTestCase{-1, true, false, ""},
+		leTestCase{1 << 30, true, false, ""},
+
+		leTestCase{int(-1), true, false, ""},
+		leTestCase{int(math.MaxInt32), true, false, ""},
+
+		leTestCase{int8(-1), true, false, ""},
+		leTestCase{int8(127), true, false, ""},
+
+		leTestCase{int16(-1), true, false, ""},
+		leTestCase{int16(0), true, false, ""},
+		leTestCase{int16(32767), true, false, ""},
+
+		leTestCase{int32(-1), true, false, ""},
+		leTestCase{int32(math.MaxInt32), true, false, ""},
+
+		leTestCase{int64(-1), true, false, ""},
+		leTestCase{int64(kTwoTo54 - 1), true, false, ""},
+		leTestCase{int64(kTwoTo54 + 0), true, false, ""},
+		leTestCase{int64(kTwoTo54 + 1), true, false, ""},
+		leTestCase{int64(kTwoTo54 + 2), false, false, ""},
+
+		// Unsigned integers.
+		leTestCase{uint(0), true, false, ""},
+		leTestCase{uint(math.MaxUint32), true, false, ""},
+
+		leTestCase{uint8(0), true, false, ""},
+		leTestCase{uint8(255), true, false, ""},
+
+		leTestCase{uint16(0), true, false, ""},
+		leTestCase{uint16(65535), true, false, ""},
+
+		leTestCase{uint32(0), true, false, ""},
+		leTestCase{uint32(math.MaxUint32), true, false, ""},
+
+		leTestCase{uint64(0), true, false, ""},
+		leTestCase{uint64(kTwoTo54 - 1), true, false, ""},
+		leTestCase{uint64(kTwoTo54 + 0), true, false, ""},
+		leTestCase{uint64(kTwoTo54 + 1), true, false, ""},
+		leTestCase{uint64(kTwoTo54 + 2), false, false, ""},
+
+		// Floating point.
+		leTestCase{float64(-1), true, false, ""},
+		leTestCase{float64(kTwoTo54 - 2), true, false, ""},
+		leTestCase{float64(kTwoTo54 - 1), true, false, ""},
+		leTestCase{float64(kTwoTo54 + 0), true, false, ""},
+		leTestCase{float64(kTwoTo54 + 1), true, false, ""},
+		leTestCase{float64(kTwoTo54 + 2), true, false, ""},
+		leTestCase{float64(kTwoTo54 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessOrEqualTest) Float32AboveExactIntegerRange() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := LessOrEqual(float32(kTwoTo25 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to 3.3554432e+07"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		// Signed integers.
+		leTestCase{int64(-1), true, false, ""},
+		leTestCase{int64(kTwoTo25 - 2), true, false, ""},
+		leTestCase{int64(kTwoTo25 - 1), true, false, ""},
+		leTestCase{int64(kTwoTo25 + 0), true, false, ""},
+		leTestCase{int64(kTwoTo25 + 1), true, false, ""},
+		leTestCase{int64(kTwoTo25 + 2), true, false, ""},
+		leTestCase{int64(kTwoTo25 + 3), false, false, ""},
+
+		// Unsigned integers.
+		leTestCase{uint64(0), true, false, ""},
+		leTestCase{uint64(kTwoTo25 - 2), true, false, ""},
+		leTestCase{uint64(kTwoTo25 - 1), true, false, ""},
+		leTestCase{uint64(kTwoTo25 + 0), true, false, ""},
+		leTestCase{uint64(kTwoTo25 + 1), true, false, ""},
+		leTestCase{uint64(kTwoTo25 + 2), true, false, ""},
+		leTestCase{uint64(kTwoTo25 + 3), false, false, ""},
+
+		// Floating point.
+		leTestCase{float32(-1), true, false, ""},
+		leTestCase{float32(kTwoTo25 - 2), true, false, ""},
+		leTestCase{float32(kTwoTo25 - 1), true, false, ""},
+		leTestCase{float32(kTwoTo25 + 0), true, false, ""},
+		leTestCase{float32(kTwoTo25 + 1), true, false, ""},
+		leTestCase{float32(kTwoTo25 + 2), true, false, ""},
+		leTestCase{float32(kTwoTo25 + 3), false, false, ""},
+
+		leTestCase{float64(-1), true, false, ""},
+		leTestCase{float64(kTwoTo25 - 2), true, false, ""},
+		leTestCase{float64(kTwoTo25 - 1), true, false, ""},
+		leTestCase{float64(kTwoTo25 + 0), true, false, ""},
+		leTestCase{float64(kTwoTo25 + 1), true, false, ""},
+		leTestCase{float64(kTwoTo25 + 2), true, false, ""},
+		leTestCase{float64(kTwoTo25 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessOrEqualTest) Float64AboveExactIntegerRange() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := LessOrEqual(float64(kTwoTo54 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to 1.8014398509481984e+16"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		// Signed integers.
+		leTestCase{int64(-1), true, false, ""},
+		leTestCase{int64(kTwoTo54 - 2), true, false, ""},
+		leTestCase{int64(kTwoTo54 - 1), true, false, ""},
+		leTestCase{int64(kTwoTo54 + 0), true, false, ""},
+		leTestCase{int64(kTwoTo54 + 1), true, false, ""},
+		leTestCase{int64(kTwoTo54 + 2), true, false, ""},
+		leTestCase{int64(kTwoTo54 + 3), false, false, ""},
+
+		// Unsigned integers.
+		leTestCase{uint64(0), true, false, ""},
+		leTestCase{uint64(kTwoTo54 - 2), true, false, ""},
+		leTestCase{uint64(kTwoTo54 - 1), true, false, ""},
+		leTestCase{uint64(kTwoTo54 + 0), true, false, ""},
+		leTestCase{uint64(kTwoTo54 + 1), true, false, ""},
+		leTestCase{uint64(kTwoTo54 + 2), true, false, ""},
+		leTestCase{uint64(kTwoTo54 + 3), false, false, ""},
+
+		// Floating point.
+		leTestCase{float64(-1), true, false, ""},
+		leTestCase{float64(kTwoTo54 - 2), true, false, ""},
+		leTestCase{float64(kTwoTo54 - 1), true, false, ""},
+		leTestCase{float64(kTwoTo54 + 0), true, false, ""},
+		leTestCase{float64(kTwoTo54 + 1), true, false, ""},
+		leTestCase{float64(kTwoTo54 + 2), true, false, ""},
+		leTestCase{float64(kTwoTo54 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// String literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *LessOrEqualTest) EmptyString() {
+	matcher := LessOrEqual("")
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to \"\""
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		leTestCase{"", true, false, ""},
+		leTestCase{"\x00", false, false, ""},
+		leTestCase{"a", false, false, ""},
+		leTestCase{"foo", false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessOrEqualTest) SingleNullByte() {
+	matcher := LessOrEqual("\x00")
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to \"\x00\""
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		leTestCase{"", true, false, ""},
+		leTestCase{"\x00", true, false, ""},
+		leTestCase{"\x00\x00", false, false, ""},
+		leTestCase{"a", false, false, ""},
+		leTestCase{"foo", false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessOrEqualTest) LongerString() {
+	matcher := LessOrEqual("foo\x00")
+	desc := matcher.Description()
+	expectedDesc := "less than or equal to \"foo\x00\""
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []leTestCase{
+		leTestCase{"", true, false, ""},
+		leTestCase{"\x00", true, false, ""},
+		leTestCase{"bar", true, false, ""},
+		leTestCase{"foo", true, false, ""},
+		leTestCase{"foo\x00", true, false, ""},
+		leTestCase{"foo\x00\x00", false, false, ""},
+		leTestCase{"fooa", false, false, ""},
+		leTestCase{"qux", false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/less_than.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/less_than.go
new file mode 100644
index 00000000000..8258e45d99d
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/less_than.go
@@ -0,0 +1,152 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"math"
+	"reflect"
+)
+
+// LessThan returns a matcher that matches integer, floating point, or strings
+// values v such that v < x. Comparison is not defined between numeric and
+// string types, but is defined between all integer and floating point types.
+//
+// x must itself be an integer, floating point, or string type; otherwise,
+// LessThan will panic.
+func LessThan(x interface{}) Matcher {
+	v := reflect.ValueOf(x)
+	kind := v.Kind()
+
+	switch {
+	case isInteger(v):
+	case isFloat(v):
+	case kind == reflect.String:
+
+	default:
+		panic(fmt.Sprintf("LessThan: unexpected kind %v", kind))
+	}
+
+	return &lessThanMatcher{v}
+}
+
+type lessThanMatcher struct {
+	limit reflect.Value
+}
+
+func (m *lessThanMatcher) Description() string {
+	// Special case: make it clear that strings are strings.
+	if m.limit.Kind() == reflect.String {
+		return fmt.Sprintf("less than \"%s\"", m.limit.String())
+	}
+
+	return fmt.Sprintf("less than %v", m.limit.Interface())
+}
+
+func compareIntegers(v1, v2 reflect.Value) (err error) {
+	err = errors.New("")
+
+	switch {
+	case isSignedInteger(v1) && isSignedInteger(v2):
+		if v1.Int() < v2.Int() {
+			err = nil
+		}
+		return
+
+	case isSignedInteger(v1) && isUnsignedInteger(v2):
+		if v1.Int() < 0 || uint64(v1.Int()) < v2.Uint() {
+			err = nil
+		}
+		return
+
+	case isUnsignedInteger(v1) && isSignedInteger(v2):
+		if v1.Uint() <= math.MaxInt64 && int64(v1.Uint()) < v2.Int() {
+			err = nil
+		}
+		return
+
+	case isUnsignedInteger(v1) && isUnsignedInteger(v2):
+		if v1.Uint() < v2.Uint() {
+			err = nil
+		}
+		return
+	}
+
+	panic(fmt.Sprintf("compareIntegers: %v %v", v1, v2))
+}
+
+func getFloat(v reflect.Value) float64 {
+	switch {
+	case isSignedInteger(v):
+		return float64(v.Int())
+
+	case isUnsignedInteger(v):
+		return float64(v.Uint())
+
+	case isFloat(v):
+		return v.Float()
+	}
+
+	panic(fmt.Sprintf("getFloat: %v", v))
+}
+
+func (m *lessThanMatcher) Matches(c interface{}) (err error) {
+	v1 := reflect.ValueOf(c)
+	v2 := m.limit
+
+	err = errors.New("")
+
+	// Handle strings as a special case.
+	if v1.Kind() == reflect.String && v2.Kind() == reflect.String {
+		if v1.String() < v2.String() {
+			err = nil
+		}
+		return
+	}
+
+	// If we get here, we require that we are dealing with integers or floats.
+	v1Legal := isInteger(v1) || isFloat(v1)
+	v2Legal := isInteger(v2) || isFloat(v2)
+	if !v1Legal || !v2Legal {
+		err = NewFatalError("which is not comparable")
+		return
+	}
+
+	// Handle the various comparison cases.
+	switch {
+	// Both integers
+	case isInteger(v1) && isInteger(v2):
+		return compareIntegers(v1, v2)
+
+	// At least one float32
+	case v1.Kind() == reflect.Float32 || v2.Kind() == reflect.Float32:
+		if float32(getFloat(v1)) < float32(getFloat(v2)) {
+			err = nil
+		}
+		return
+
+	// At least one float64
+	case v1.Kind() == reflect.Float64 || v2.Kind() == reflect.Float64:
+		if getFloat(v1) < getFloat(v2) {
+			err = nil
+		}
+		return
+	}
+
+	// We shouldn't get here.
+	panic(fmt.Sprintf("lessThanMatcher.Matches: Shouldn't get here: %v %v", v1, v2))
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/less_than_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/less_than_test.go
new file mode 100644
index 00000000000..59f5b7f56bd
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/less_than_test.go
@@ -0,0 +1,1057 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	"math"
+
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type LessThanTest struct {
+}
+
+func init() { RegisterTestSuite(&LessThanTest{}) }
+
+type ltTestCase struct {
+	candidate      interface{}
+	expectedResult bool
+	shouldBeFatal  bool
+	expectedError  string
+}
+
+func (t *LessThanTest) checkTestCases(matcher Matcher, cases []ltTestCase) {
+	for i, c := range cases {
+		err := matcher.Matches(c.candidate)
+
+		ExpectThat(
+			(err == nil),
+			Equals(c.expectedResult),
+			"Case %d (candidate %v)",
+			i,
+			c.candidate)
+
+		if err == nil {
+			continue
+		}
+
+		_, isFatal := err.(*FatalError)
+		ExpectEq(
+			c.shouldBeFatal,
+			isFatal,
+			"Case %d (candidate %v)",
+			i,
+			c.candidate)
+
+		ExpectThat(
+			err,
+			Error(Equals(c.expectedError)),
+			"Case %d (candidate %v)",
+			i,
+			c.candidate)
+	}
+}
+
+////////////////////////////////////////////////////////////////////////
+// Integer literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *LessThanTest) IntegerCandidateBadTypes() {
+	matcher := LessThan(int(-150))
+
+	cases := []ltTestCase{
+		ltTestCase{true, false, true, "which is not comparable"},
+		ltTestCase{complex64(-151), false, true, "which is not comparable"},
+		ltTestCase{complex128(-151), false, true, "which is not comparable"},
+		ltTestCase{[...]int{-151}, false, true, "which is not comparable"},
+		ltTestCase{make(chan int), false, true, "which is not comparable"},
+		ltTestCase{func() {}, false, true, "which is not comparable"},
+		ltTestCase{map[int]int{}, false, true, "which is not comparable"},
+		ltTestCase{&ltTestCase{}, false, true, "which is not comparable"},
+		ltTestCase{make([]int, 0), false, true, "which is not comparable"},
+		ltTestCase{"-151", false, true, "which is not comparable"},
+		ltTestCase{ltTestCase{}, false, true, "which is not comparable"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessThanTest) FloatCandidateBadTypes() {
+	matcher := LessThan(float32(-150))
+
+	cases := []ltTestCase{
+		ltTestCase{true, false, true, "which is not comparable"},
+		ltTestCase{complex64(-151), false, true, "which is not comparable"},
+		ltTestCase{complex128(-151), false, true, "which is not comparable"},
+		ltTestCase{[...]int{-151}, false, true, "which is not comparable"},
+		ltTestCase{make(chan int), false, true, "which is not comparable"},
+		ltTestCase{func() {}, false, true, "which is not comparable"},
+		ltTestCase{map[int]int{}, false, true, "which is not comparable"},
+		ltTestCase{&ltTestCase{}, false, true, "which is not comparable"},
+		ltTestCase{make([]int, 0), false, true, "which is not comparable"},
+		ltTestCase{"-151", false, true, "which is not comparable"},
+		ltTestCase{ltTestCase{}, false, true, "which is not comparable"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessThanTest) StringCandidateBadTypes() {
+	matcher := LessThan("17")
+
+	cases := []ltTestCase{
+		ltTestCase{true, false, true, "which is not comparable"},
+		ltTestCase{int(0), false, true, "which is not comparable"},
+		ltTestCase{int8(0), false, true, "which is not comparable"},
+		ltTestCase{int16(0), false, true, "which is not comparable"},
+		ltTestCase{int32(0), false, true, "which is not comparable"},
+		ltTestCase{int64(0), false, true, "which is not comparable"},
+		ltTestCase{uint(0), false, true, "which is not comparable"},
+		ltTestCase{uint8(0), false, true, "which is not comparable"},
+		ltTestCase{uint16(0), false, true, "which is not comparable"},
+		ltTestCase{uint32(0), false, true, "which is not comparable"},
+		ltTestCase{uint64(0), false, true, "which is not comparable"},
+		ltTestCase{float32(0), false, true, "which is not comparable"},
+		ltTestCase{float64(0), false, true, "which is not comparable"},
+		ltTestCase{complex64(-151), false, true, "which is not comparable"},
+		ltTestCase{complex128(-151), false, true, "which is not comparable"},
+		ltTestCase{[...]int{-151}, false, true, "which is not comparable"},
+		ltTestCase{make(chan int), false, true, "which is not comparable"},
+		ltTestCase{func() {}, false, true, "which is not comparable"},
+		ltTestCase{map[int]int{}, false, true, "which is not comparable"},
+		ltTestCase{&ltTestCase{}, false, true, "which is not comparable"},
+		ltTestCase{make([]int, 0), false, true, "which is not comparable"},
+		ltTestCase{ltTestCase{}, false, true, "which is not comparable"},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessThanTest) BadArgument() {
+	panicked := false
+
+	defer func() {
+		ExpectThat(panicked, Equals(true))
+	}()
+
+	defer func() {
+		if r := recover(); r != nil {
+			panicked = true
+		}
+	}()
+
+	LessThan(complex128(0))
+}
+
+////////////////////////////////////////////////////////////////////////
+// Integer literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *LessThanTest) NegativeIntegerLiteral() {
+	matcher := LessThan(-150)
+	desc := matcher.Description()
+	expectedDesc := "less than -150"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		// Signed integers.
+		ltTestCase{-(1 << 30), true, false, ""},
+		ltTestCase{-151, true, false, ""},
+		ltTestCase{-150, false, false, ""},
+		ltTestCase{0, false, false, ""},
+		ltTestCase{17, false, false, ""},
+
+		ltTestCase{int(-(1 << 30)), true, false, ""},
+		ltTestCase{int(-151), true, false, ""},
+		ltTestCase{int(-150), false, false, ""},
+		ltTestCase{int(0), false, false, ""},
+		ltTestCase{int(17), false, false, ""},
+
+		ltTestCase{int8(-127), false, false, ""},
+		ltTestCase{int8(0), false, false, ""},
+		ltTestCase{int8(17), false, false, ""},
+
+		ltTestCase{int16(-(1 << 14)), true, false, ""},
+		ltTestCase{int16(-151), true, false, ""},
+		ltTestCase{int16(-150), false, false, ""},
+		ltTestCase{int16(0), false, false, ""},
+		ltTestCase{int16(17), false, false, ""},
+
+		ltTestCase{int32(-(1 << 30)), true, false, ""},
+		ltTestCase{int32(-151), true, false, ""},
+		ltTestCase{int32(-150), false, false, ""},
+		ltTestCase{int32(0), false, false, ""},
+		ltTestCase{int32(17), false, false, ""},
+
+		ltTestCase{int64(-(1 << 30)), true, false, ""},
+		ltTestCase{int64(-151), true, false, ""},
+		ltTestCase{int64(-150), false, false, ""},
+		ltTestCase{int64(0), false, false, ""},
+		ltTestCase{int64(17), false, false, ""},
+
+		// Unsigned integers.
+		ltTestCase{uint((1 << 32) - 151), false, false, ""},
+		ltTestCase{uint(0), false, false, ""},
+		ltTestCase{uint(17), false, false, ""},
+
+		ltTestCase{uint8(0), false, false, ""},
+		ltTestCase{uint8(17), false, false, ""},
+		ltTestCase{uint8(253), false, false, ""},
+
+		ltTestCase{uint16((1 << 16) - 151), false, false, ""},
+		ltTestCase{uint16(0), false, false, ""},
+		ltTestCase{uint16(17), false, false, ""},
+
+		ltTestCase{uint32((1 << 32) - 151), false, false, ""},
+		ltTestCase{uint32(0), false, false, ""},
+		ltTestCase{uint32(17), false, false, ""},
+
+		ltTestCase{uint64((1 << 64) - 151), false, false, ""},
+		ltTestCase{uint64(0), false, false, ""},
+		ltTestCase{uint64(17), false, false, ""},
+
+		// Floating point.
+		ltTestCase{float32(-(1 << 30)), true, false, ""},
+		ltTestCase{float32(-151), true, false, ""},
+		ltTestCase{float32(-150.1), true, false, ""},
+		ltTestCase{float32(-150), false, false, ""},
+		ltTestCase{float32(-149.9), false, false, ""},
+		ltTestCase{float32(0), false, false, ""},
+		ltTestCase{float32(17), false, false, ""},
+		ltTestCase{float32(160), false, false, ""},
+
+		ltTestCase{float64(-(1 << 30)), true, false, ""},
+		ltTestCase{float64(-151), true, false, ""},
+		ltTestCase{float64(-150.1), true, false, ""},
+		ltTestCase{float64(-150), false, false, ""},
+		ltTestCase{float64(-149.9), false, false, ""},
+		ltTestCase{float64(0), false, false, ""},
+		ltTestCase{float64(17), false, false, ""},
+		ltTestCase{float64(160), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessThanTest) ZeroIntegerLiteral() {
+	matcher := LessThan(0)
+	desc := matcher.Description()
+	expectedDesc := "less than 0"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		// Signed integers.
+		ltTestCase{-(1 << 30), true, false, ""},
+		ltTestCase{-1, true, false, ""},
+		ltTestCase{0, false, false, ""},
+		ltTestCase{1, false, false, ""},
+		ltTestCase{17, false, false, ""},
+		ltTestCase{(1 << 30), false, false, ""},
+
+		ltTestCase{int(-(1 << 30)), true, false, ""},
+		ltTestCase{int(-1), true, false, ""},
+		ltTestCase{int(0), false, false, ""},
+		ltTestCase{int(1), false, false, ""},
+		ltTestCase{int(17), false, false, ""},
+
+		ltTestCase{int8(-1), true, false, ""},
+		ltTestCase{int8(0), false, false, ""},
+		ltTestCase{int8(1), false, false, ""},
+
+		ltTestCase{int16(-(1 << 14)), true, false, ""},
+		ltTestCase{int16(-1), true, false, ""},
+		ltTestCase{int16(0), false, false, ""},
+		ltTestCase{int16(1), false, false, ""},
+		ltTestCase{int16(17), false, false, ""},
+
+		ltTestCase{int32(-(1 << 30)), true, false, ""},
+		ltTestCase{int32(-1), true, false, ""},
+		ltTestCase{int32(0), false, false, ""},
+		ltTestCase{int32(1), false, false, ""},
+		ltTestCase{int32(17), false, false, ""},
+
+		ltTestCase{int64(-(1 << 30)), true, false, ""},
+		ltTestCase{int64(-1), true, false, ""},
+		ltTestCase{int64(0), false, false, ""},
+		ltTestCase{int64(1), false, false, ""},
+		ltTestCase{int64(17), false, false, ""},
+
+		// Unsigned integers.
+		ltTestCase{uint((1 << 32) - 1), false, false, ""},
+		ltTestCase{uint(0), false, false, ""},
+		ltTestCase{uint(17), false, false, ""},
+
+		ltTestCase{uint8(0), false, false, ""},
+		ltTestCase{uint8(17), false, false, ""},
+		ltTestCase{uint8(253), false, false, ""},
+
+		ltTestCase{uint16((1 << 16) - 1), false, false, ""},
+		ltTestCase{uint16(0), false, false, ""},
+		ltTestCase{uint16(17), false, false, ""},
+
+		ltTestCase{uint32((1 << 32) - 1), false, false, ""},
+		ltTestCase{uint32(0), false, false, ""},
+		ltTestCase{uint32(17), false, false, ""},
+
+		ltTestCase{uint64((1 << 64) - 1), false, false, ""},
+		ltTestCase{uint64(0), false, false, ""},
+		ltTestCase{uint64(17), false, false, ""},
+
+		// Floating point.
+		ltTestCase{float32(-(1 << 30)), true, false, ""},
+		ltTestCase{float32(-1), true, false, ""},
+		ltTestCase{float32(-0.1), true, false, ""},
+		ltTestCase{float32(-0.0), false, false, ""},
+		ltTestCase{float32(0), false, false, ""},
+		ltTestCase{float32(0.1), false, false, ""},
+		ltTestCase{float32(17), false, false, ""},
+		ltTestCase{float32(160), false, false, ""},
+
+		ltTestCase{float64(-(1 << 30)), true, false, ""},
+		ltTestCase{float64(-1), true, false, ""},
+		ltTestCase{float64(-0.1), true, false, ""},
+		ltTestCase{float64(-0), false, false, ""},
+		ltTestCase{float64(0), false, false, ""},
+		ltTestCase{float64(17), false, false, ""},
+		ltTestCase{float64(160), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessThanTest) PositiveIntegerLiteral() {
+	matcher := LessThan(150)
+	desc := matcher.Description()
+	expectedDesc := "less than 150"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		// Signed integers.
+		ltTestCase{-1, true, false, ""},
+		ltTestCase{149, true, false, ""},
+		ltTestCase{150, false, false, ""},
+		ltTestCase{151, false, false, ""},
+
+		ltTestCase{int(-1), true, false, ""},
+		ltTestCase{int(149), true, false, ""},
+		ltTestCase{int(150), false, false, ""},
+		ltTestCase{int(151), false, false, ""},
+
+		ltTestCase{int8(-1), true, false, ""},
+		ltTestCase{int8(0), true, false, ""},
+		ltTestCase{int8(17), true, false, ""},
+		ltTestCase{int8(127), true, false, ""},
+
+		ltTestCase{int16(-1), true, false, ""},
+		ltTestCase{int16(149), true, false, ""},
+		ltTestCase{int16(150), false, false, ""},
+		ltTestCase{int16(151), false, false, ""},
+
+		ltTestCase{int32(-1), true, false, ""},
+		ltTestCase{int32(149), true, false, ""},
+		ltTestCase{int32(150), false, false, ""},
+		ltTestCase{int32(151), false, false, ""},
+
+		ltTestCase{int64(-1), true, false, ""},
+		ltTestCase{int64(149), true, false, ""},
+		ltTestCase{int64(150), false, false, ""},
+		ltTestCase{int64(151), false, false, ""},
+
+		// Unsigned integers.
+		ltTestCase{uint(0), true, false, ""},
+		ltTestCase{uint(149), true, false, ""},
+		ltTestCase{uint(150), false, false, ""},
+		ltTestCase{uint(151), false, false, ""},
+
+		ltTestCase{uint8(0), true, false, ""},
+		ltTestCase{uint8(127), true, false, ""},
+
+		ltTestCase{uint16(0), true, false, ""},
+		ltTestCase{uint16(149), true, false, ""},
+		ltTestCase{uint16(150), false, false, ""},
+		ltTestCase{uint16(151), false, false, ""},
+
+		ltTestCase{uint32(0), true, false, ""},
+		ltTestCase{uint32(149), true, false, ""},
+		ltTestCase{uint32(150), false, false, ""},
+		ltTestCase{uint32(151), false, false, ""},
+
+		ltTestCase{uint64(0), true, false, ""},
+		ltTestCase{uint64(149), true, false, ""},
+		ltTestCase{uint64(150), false, false, ""},
+		ltTestCase{uint64(151), false, false, ""},
+
+		// Floating point.
+		ltTestCase{float32(-1), true, false, ""},
+		ltTestCase{float32(149), true, false, ""},
+		ltTestCase{float32(149.9), true, false, ""},
+		ltTestCase{float32(150), false, false, ""},
+		ltTestCase{float32(150.1), false, false, ""},
+		ltTestCase{float32(151), false, false, ""},
+
+		ltTestCase{float64(-1), true, false, ""},
+		ltTestCase{float64(149), true, false, ""},
+		ltTestCase{float64(149.9), true, false, ""},
+		ltTestCase{float64(150), false, false, ""},
+		ltTestCase{float64(150.1), false, false, ""},
+		ltTestCase{float64(151), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Float literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *LessThanTest) NegativeFloatLiteral() {
+	matcher := LessThan(-150.1)
+	desc := matcher.Description()
+	expectedDesc := "less than -150.1"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		// Signed integers.
+		ltTestCase{-(1 << 30), true, false, ""},
+		ltTestCase{-151, true, false, ""},
+		ltTestCase{-150, false, false, ""},
+		ltTestCase{0, false, false, ""},
+		ltTestCase{17, false, false, ""},
+
+		ltTestCase{int(-(1 << 30)), true, false, ""},
+		ltTestCase{int(-151), true, false, ""},
+		ltTestCase{int(-150), false, false, ""},
+		ltTestCase{int(0), false, false, ""},
+		ltTestCase{int(17), false, false, ""},
+
+		ltTestCase{int8(-127), false, false, ""},
+		ltTestCase{int8(0), false, false, ""},
+		ltTestCase{int8(17), false, false, ""},
+
+		ltTestCase{int16(-(1 << 14)), true, false, ""},
+		ltTestCase{int16(-151), true, false, ""},
+		ltTestCase{int16(-150), false, false, ""},
+		ltTestCase{int16(0), false, false, ""},
+		ltTestCase{int16(17), false, false, ""},
+
+		ltTestCase{int32(-(1 << 30)), true, false, ""},
+		ltTestCase{int32(-151), true, false, ""},
+		ltTestCase{int32(-150), false, false, ""},
+		ltTestCase{int32(0), false, false, ""},
+		ltTestCase{int32(17), false, false, ""},
+
+		ltTestCase{int64(-(1 << 30)), true, false, ""},
+		ltTestCase{int64(-151), true, false, ""},
+		ltTestCase{int64(-150), false, false, ""},
+		ltTestCase{int64(0), false, false, ""},
+		ltTestCase{int64(17), false, false, ""},
+
+		// Unsigned integers.
+		ltTestCase{uint((1 << 32) - 151), false, false, ""},
+		ltTestCase{uint(0), false, false, ""},
+		ltTestCase{uint(17), false, false, ""},
+
+		ltTestCase{uint8(0), false, false, ""},
+		ltTestCase{uint8(17), false, false, ""},
+		ltTestCase{uint8(253), false, false, ""},
+
+		ltTestCase{uint16((1 << 16) - 151), false, false, ""},
+		ltTestCase{uint16(0), false, false, ""},
+		ltTestCase{uint16(17), false, false, ""},
+
+		ltTestCase{uint32((1 << 32) - 151), false, false, ""},
+		ltTestCase{uint32(0), false, false, ""},
+		ltTestCase{uint32(17), false, false, ""},
+
+		ltTestCase{uint64((1 << 64) - 151), false, false, ""},
+		ltTestCase{uint64(0), false, false, ""},
+		ltTestCase{uint64(17), false, false, ""},
+
+		// Floating point.
+		ltTestCase{float32(-(1 << 30)), true, false, ""},
+		ltTestCase{float32(-151), true, false, ""},
+		ltTestCase{float32(-150.2), true, false, ""},
+		ltTestCase{float32(-150.1), false, false, ""},
+		ltTestCase{float32(-150), false, false, ""},
+		ltTestCase{float32(0), false, false, ""},
+		ltTestCase{float32(17), false, false, ""},
+		ltTestCase{float32(160), false, false, ""},
+
+		ltTestCase{float64(-(1 << 30)), true, false, ""},
+		ltTestCase{float64(-151), true, false, ""},
+		ltTestCase{float64(-150.2), true, false, ""},
+		ltTestCase{float64(-150.1), false, false, ""},
+		ltTestCase{float64(-150), false, false, ""},
+		ltTestCase{float64(0), false, false, ""},
+		ltTestCase{float64(17), false, false, ""},
+		ltTestCase{float64(160), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessThanTest) PositiveFloatLiteral() {
+	matcher := LessThan(149.9)
+	desc := matcher.Description()
+	expectedDesc := "less than 149.9"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		// Signed integers.
+		ltTestCase{-1, true, false, ""},
+		ltTestCase{149, true, false, ""},
+		ltTestCase{150, false, false, ""},
+		ltTestCase{151, false, false, ""},
+
+		ltTestCase{int(-1), true, false, ""},
+		ltTestCase{int(149), true, false, ""},
+		ltTestCase{int(150), false, false, ""},
+		ltTestCase{int(151), false, false, ""},
+
+		ltTestCase{int8(-1), true, false, ""},
+		ltTestCase{int8(0), true, false, ""},
+		ltTestCase{int8(17), true, false, ""},
+		ltTestCase{int8(127), true, false, ""},
+
+		ltTestCase{int16(-1), true, false, ""},
+		ltTestCase{int16(149), true, false, ""},
+		ltTestCase{int16(150), false, false, ""},
+		ltTestCase{int16(151), false, false, ""},
+
+		ltTestCase{int32(-1), true, false, ""},
+		ltTestCase{int32(149), true, false, ""},
+		ltTestCase{int32(150), false, false, ""},
+		ltTestCase{int32(151), false, false, ""},
+
+		ltTestCase{int64(-1), true, false, ""},
+		ltTestCase{int64(149), true, false, ""},
+		ltTestCase{int64(150), false, false, ""},
+		ltTestCase{int64(151), false, false, ""},
+
+		// Unsigned integers.
+		ltTestCase{uint(0), true, false, ""},
+		ltTestCase{uint(149), true, false, ""},
+		ltTestCase{uint(150), false, false, ""},
+		ltTestCase{uint(151), false, false, ""},
+
+		ltTestCase{uint8(0), true, false, ""},
+		ltTestCase{uint8(127), true, false, ""},
+
+		ltTestCase{uint16(0), true, false, ""},
+		ltTestCase{uint16(149), true, false, ""},
+		ltTestCase{uint16(150), false, false, ""},
+		ltTestCase{uint16(151), false, false, ""},
+
+		ltTestCase{uint32(0), true, false, ""},
+		ltTestCase{uint32(149), true, false, ""},
+		ltTestCase{uint32(150), false, false, ""},
+		ltTestCase{uint32(151), false, false, ""},
+
+		ltTestCase{uint64(0), true, false, ""},
+		ltTestCase{uint64(149), true, false, ""},
+		ltTestCase{uint64(150), false, false, ""},
+		ltTestCase{uint64(151), false, false, ""},
+
+		// Floating point.
+		ltTestCase{float32(-1), true, false, ""},
+		ltTestCase{float32(149), true, false, ""},
+		ltTestCase{float32(149.8), true, false, ""},
+		ltTestCase{float32(149.9), false, false, ""},
+		ltTestCase{float32(150), false, false, ""},
+		ltTestCase{float32(151), false, false, ""},
+
+		ltTestCase{float64(-1), true, false, ""},
+		ltTestCase{float64(149), true, false, ""},
+		ltTestCase{float64(149.8), true, false, ""},
+		ltTestCase{float64(149.9), false, false, ""},
+		ltTestCase{float64(150), false, false, ""},
+		ltTestCase{float64(151), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Subtle cases
+////////////////////////////////////////////////////////////////////////
+
+func (t *LessThanTest) Int64NotExactlyRepresentableBySinglePrecision() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := LessThan(int64(kTwoTo25 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "less than 33554433"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		// Signed integers.
+		ltTestCase{-1, true, false, ""},
+		ltTestCase{kTwoTo25 + 0, true, false, ""},
+		ltTestCase{kTwoTo25 + 1, false, false, ""},
+		ltTestCase{kTwoTo25 + 2, false, false, ""},
+
+		ltTestCase{int(-1), true, false, ""},
+		ltTestCase{int(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{int(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{int(kTwoTo25 + 2), false, false, ""},
+
+		ltTestCase{int8(-1), true, false, ""},
+		ltTestCase{int8(127), true, false, ""},
+
+		ltTestCase{int16(-1), true, false, ""},
+		ltTestCase{int16(0), true, false, ""},
+		ltTestCase{int16(32767), true, false, ""},
+
+		ltTestCase{int32(-1), true, false, ""},
+		ltTestCase{int32(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{int32(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{int32(kTwoTo25 + 2), false, false, ""},
+
+		ltTestCase{int64(-1), true, false, ""},
+		ltTestCase{int64(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{int64(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{int64(kTwoTo25 + 2), false, false, ""},
+
+		// Unsigned integers.
+		ltTestCase{uint(0), true, false, ""},
+		ltTestCase{uint(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{uint(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{uint(kTwoTo25 + 2), false, false, ""},
+
+		ltTestCase{uint8(0), true, false, ""},
+		ltTestCase{uint8(255), true, false, ""},
+
+		ltTestCase{uint16(0), true, false, ""},
+		ltTestCase{uint16(65535), true, false, ""},
+
+		ltTestCase{uint32(0), true, false, ""},
+		ltTestCase{uint32(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{uint32(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{uint32(kTwoTo25 + 2), false, false, ""},
+
+		ltTestCase{uint64(0), true, false, ""},
+		ltTestCase{uint64(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{uint64(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{uint64(kTwoTo25 + 2), false, false, ""},
+
+		// Floating point.
+		ltTestCase{float32(-1), true, false, ""},
+		ltTestCase{float32(kTwoTo25 - 2), true, false, ""},
+		ltTestCase{float32(kTwoTo25 - 1), false, false, ""},
+		ltTestCase{float32(kTwoTo25 + 0), false, false, ""},
+		ltTestCase{float32(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{float32(kTwoTo25 + 2), false, false, ""},
+		ltTestCase{float32(kTwoTo25 + 3), false, false, ""},
+
+		ltTestCase{float64(-1), true, false, ""},
+		ltTestCase{float64(kTwoTo25 - 2), true, false, ""},
+		ltTestCase{float64(kTwoTo25 - 1), true, false, ""},
+		ltTestCase{float64(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{float64(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{float64(kTwoTo25 + 2), false, false, ""},
+		ltTestCase{float64(kTwoTo25 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessThanTest) Int64NotExactlyRepresentableByDoublePrecision() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := LessThan(int64(kTwoTo54 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "less than 18014398509481985"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		// Signed integers.
+		ltTestCase{-1, true, false, ""},
+		ltTestCase{1 << 30, true, false, ""},
+
+		ltTestCase{int(-1), true, false, ""},
+		ltTestCase{int(math.MaxInt32), true, false, ""},
+
+		ltTestCase{int8(-1), true, false, ""},
+		ltTestCase{int8(127), true, false, ""},
+
+		ltTestCase{int16(-1), true, false, ""},
+		ltTestCase{int16(0), true, false, ""},
+		ltTestCase{int16(32767), true, false, ""},
+
+		ltTestCase{int32(-1), true, false, ""},
+		ltTestCase{int32(math.MaxInt32), true, false, ""},
+
+		ltTestCase{int64(-1), true, false, ""},
+		ltTestCase{int64(kTwoTo54 - 1), true, false, ""},
+		ltTestCase{int64(kTwoTo54 + 0), true, false, ""},
+		ltTestCase{int64(kTwoTo54 + 1), false, false, ""},
+		ltTestCase{int64(kTwoTo54 + 2), false, false, ""},
+
+		// Unsigned integers.
+		ltTestCase{uint(0), true, false, ""},
+		ltTestCase{uint(math.MaxUint32), true, false, ""},
+
+		ltTestCase{uint8(0), true, false, ""},
+		ltTestCase{uint8(255), true, false, ""},
+
+		ltTestCase{uint16(0), true, false, ""},
+		ltTestCase{uint16(65535), true, false, ""},
+
+		ltTestCase{uint32(0), true, false, ""},
+		ltTestCase{uint32(math.MaxUint32), true, false, ""},
+
+		ltTestCase{uint64(0), true, false, ""},
+		ltTestCase{uint64(kTwoTo54 - 1), true, false, ""},
+		ltTestCase{uint64(kTwoTo54 + 0), true, false, ""},
+		ltTestCase{uint64(kTwoTo54 + 1), false, false, ""},
+		ltTestCase{uint64(kTwoTo54 + 2), false, false, ""},
+
+		// Floating point.
+		ltTestCase{float64(-1), true, false, ""},
+		ltTestCase{float64(kTwoTo54 - 2), true, false, ""},
+		ltTestCase{float64(kTwoTo54 - 1), false, false, ""},
+		ltTestCase{float64(kTwoTo54 + 0), false, false, ""},
+		ltTestCase{float64(kTwoTo54 + 1), false, false, ""},
+		ltTestCase{float64(kTwoTo54 + 2), false, false, ""},
+		ltTestCase{float64(kTwoTo54 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessThanTest) Uint64NotExactlyRepresentableBySinglePrecision() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := LessThan(uint64(kTwoTo25 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "less than 33554433"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		// Signed integers.
+		ltTestCase{-1, true, false, ""},
+		ltTestCase{kTwoTo25 + 0, true, false, ""},
+		ltTestCase{kTwoTo25 + 1, false, false, ""},
+		ltTestCase{kTwoTo25 + 2, false, false, ""},
+
+		ltTestCase{int(-1), true, false, ""},
+		ltTestCase{int(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{int(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{int(kTwoTo25 + 2), false, false, ""},
+
+		ltTestCase{int8(-1), true, false, ""},
+		ltTestCase{int8(127), true, false, ""},
+
+		ltTestCase{int16(-1), true, false, ""},
+		ltTestCase{int16(0), true, false, ""},
+		ltTestCase{int16(32767), true, false, ""},
+
+		ltTestCase{int32(-1), true, false, ""},
+		ltTestCase{int32(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{int32(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{int32(kTwoTo25 + 2), false, false, ""},
+
+		ltTestCase{int64(-1), true, false, ""},
+		ltTestCase{int64(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{int64(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{int64(kTwoTo25 + 2), false, false, ""},
+
+		// Unsigned integers.
+		ltTestCase{uint(0), true, false, ""},
+		ltTestCase{uint(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{uint(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{uint(kTwoTo25 + 2), false, false, ""},
+
+		ltTestCase{uint8(0), true, false, ""},
+		ltTestCase{uint8(255), true, false, ""},
+
+		ltTestCase{uint16(0), true, false, ""},
+		ltTestCase{uint16(65535), true, false, ""},
+
+		ltTestCase{uint32(0), true, false, ""},
+		ltTestCase{uint32(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{uint32(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{uint32(kTwoTo25 + 2), false, false, ""},
+
+		ltTestCase{uint64(0), true, false, ""},
+		ltTestCase{uint64(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{uint64(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{uint64(kTwoTo25 + 2), false, false, ""},
+
+		// Floating point.
+		ltTestCase{float32(-1), true, false, ""},
+		ltTestCase{float32(kTwoTo25 - 2), true, false, ""},
+		ltTestCase{float32(kTwoTo25 - 1), false, false, ""},
+		ltTestCase{float32(kTwoTo25 + 0), false, false, ""},
+		ltTestCase{float32(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{float32(kTwoTo25 + 2), false, false, ""},
+		ltTestCase{float32(kTwoTo25 + 3), false, false, ""},
+
+		ltTestCase{float64(-1), true, false, ""},
+		ltTestCase{float64(kTwoTo25 - 2), true, false, ""},
+		ltTestCase{float64(kTwoTo25 - 1), true, false, ""},
+		ltTestCase{float64(kTwoTo25 + 0), true, false, ""},
+		ltTestCase{float64(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{float64(kTwoTo25 + 2), false, false, ""},
+		ltTestCase{float64(kTwoTo25 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessThanTest) Uint64NotExactlyRepresentableByDoublePrecision() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := LessThan(uint64(kTwoTo54 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "less than 18014398509481985"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		// Signed integers.
+		ltTestCase{-1, true, false, ""},
+		ltTestCase{1 << 30, true, false, ""},
+
+		ltTestCase{int(-1), true, false, ""},
+		ltTestCase{int(math.MaxInt32), true, false, ""},
+
+		ltTestCase{int8(-1), true, false, ""},
+		ltTestCase{int8(127), true, false, ""},
+
+		ltTestCase{int16(-1), true, false, ""},
+		ltTestCase{int16(0), true, false, ""},
+		ltTestCase{int16(32767), true, false, ""},
+
+		ltTestCase{int32(-1), true, false, ""},
+		ltTestCase{int32(math.MaxInt32), true, false, ""},
+
+		ltTestCase{int64(-1), true, false, ""},
+		ltTestCase{int64(kTwoTo54 - 1), true, false, ""},
+		ltTestCase{int64(kTwoTo54 + 0), true, false, ""},
+		ltTestCase{int64(kTwoTo54 + 1), false, false, ""},
+		ltTestCase{int64(kTwoTo54 + 2), false, false, ""},
+
+		// Unsigned integers.
+		ltTestCase{uint(0), true, false, ""},
+		ltTestCase{uint(math.MaxUint32), true, false, ""},
+
+		ltTestCase{uint8(0), true, false, ""},
+		ltTestCase{uint8(255), true, false, ""},
+
+		ltTestCase{uint16(0), true, false, ""},
+		ltTestCase{uint16(65535), true, false, ""},
+
+		ltTestCase{uint32(0), true, false, ""},
+		ltTestCase{uint32(math.MaxUint32), true, false, ""},
+
+		ltTestCase{uint64(0), true, false, ""},
+		ltTestCase{uint64(kTwoTo54 - 1), true, false, ""},
+		ltTestCase{uint64(kTwoTo54 + 0), true, false, ""},
+		ltTestCase{uint64(kTwoTo54 + 1), false, false, ""},
+		ltTestCase{uint64(kTwoTo54 + 2), false, false, ""},
+
+		// Floating point.
+		ltTestCase{float64(-1), true, false, ""},
+		ltTestCase{float64(kTwoTo54 - 2), true, false, ""},
+		ltTestCase{float64(kTwoTo54 - 1), false, false, ""},
+		ltTestCase{float64(kTwoTo54 + 0), false, false, ""},
+		ltTestCase{float64(kTwoTo54 + 1), false, false, ""},
+		ltTestCase{float64(kTwoTo54 + 2), false, false, ""},
+		ltTestCase{float64(kTwoTo54 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessThanTest) Float32AboveExactIntegerRange() {
+	// Single-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^25-1, 2^25+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo25 = 1 << 25
+	matcher := LessThan(float32(kTwoTo25 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "less than 3.3554432e+07"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		// Signed integers.
+		ltTestCase{int64(-1), true, false, ""},
+		ltTestCase{int64(kTwoTo25 - 2), true, false, ""},
+		ltTestCase{int64(kTwoTo25 - 1), false, false, ""},
+		ltTestCase{int64(kTwoTo25 + 0), false, false, ""},
+		ltTestCase{int64(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{int64(kTwoTo25 + 2), false, false, ""},
+		ltTestCase{int64(kTwoTo25 + 3), false, false, ""},
+
+		// Unsigned integers.
+		ltTestCase{uint64(0), true, false, ""},
+		ltTestCase{uint64(kTwoTo25 - 2), true, false, ""},
+		ltTestCase{uint64(kTwoTo25 - 1), false, false, ""},
+		ltTestCase{uint64(kTwoTo25 + 0), false, false, ""},
+		ltTestCase{uint64(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{uint64(kTwoTo25 + 2), false, false, ""},
+		ltTestCase{uint64(kTwoTo25 + 3), false, false, ""},
+
+		// Floating point.
+		ltTestCase{float32(-1), true, false, ""},
+		ltTestCase{float32(kTwoTo25 - 2), true, false, ""},
+		ltTestCase{float32(kTwoTo25 - 1), false, false, ""},
+		ltTestCase{float32(kTwoTo25 + 0), false, false, ""},
+		ltTestCase{float32(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{float32(kTwoTo25 + 2), false, false, ""},
+		ltTestCase{float32(kTwoTo25 + 3), false, false, ""},
+
+		ltTestCase{float64(-1), true, false, ""},
+		ltTestCase{float64(kTwoTo25 - 2), true, false, ""},
+		ltTestCase{float64(kTwoTo25 - 1), false, false, ""},
+		ltTestCase{float64(kTwoTo25 + 0), false, false, ""},
+		ltTestCase{float64(kTwoTo25 + 1), false, false, ""},
+		ltTestCase{float64(kTwoTo25 + 2), false, false, ""},
+		ltTestCase{float64(kTwoTo25 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessThanTest) Float64AboveExactIntegerRange() {
+	// Double-precision floats don't have enough bits to represent the integers
+	// near this one distinctly, so [2^54-1, 2^54+2] all receive the same value
+	// and should be treated as equivalent when floats are in the mix.
+	const kTwoTo54 = 1 << 54
+	matcher := LessThan(float64(kTwoTo54 + 1))
+
+	desc := matcher.Description()
+	expectedDesc := "less than 1.8014398509481984e+16"
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		// Signed integers.
+		ltTestCase{int64(-1), true, false, ""},
+		ltTestCase{int64(kTwoTo54 - 2), true, false, ""},
+		ltTestCase{int64(kTwoTo54 - 1), false, false, ""},
+		ltTestCase{int64(kTwoTo54 + 0), false, false, ""},
+		ltTestCase{int64(kTwoTo54 + 1), false, false, ""},
+		ltTestCase{int64(kTwoTo54 + 2), false, false, ""},
+		ltTestCase{int64(kTwoTo54 + 3), false, false, ""},
+
+		// Unsigned integers.
+		ltTestCase{uint64(0), true, false, ""},
+		ltTestCase{uint64(kTwoTo54 - 2), true, false, ""},
+		ltTestCase{uint64(kTwoTo54 - 1), false, false, ""},
+		ltTestCase{uint64(kTwoTo54 + 0), false, false, ""},
+		ltTestCase{uint64(kTwoTo54 + 1), false, false, ""},
+		ltTestCase{uint64(kTwoTo54 + 2), false, false, ""},
+		ltTestCase{uint64(kTwoTo54 + 3), false, false, ""},
+
+		// Floating point.
+		ltTestCase{float64(-1), true, false, ""},
+		ltTestCase{float64(kTwoTo54 - 2), true, false, ""},
+		ltTestCase{float64(kTwoTo54 - 1), false, false, ""},
+		ltTestCase{float64(kTwoTo54 + 0), false, false, ""},
+		ltTestCase{float64(kTwoTo54 + 1), false, false, ""},
+		ltTestCase{float64(kTwoTo54 + 2), false, false, ""},
+		ltTestCase{float64(kTwoTo54 + 3), false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+////////////////////////////////////////////////////////////////////////
+// String literals
+////////////////////////////////////////////////////////////////////////
+
+func (t *LessThanTest) EmptyString() {
+	matcher := LessThan("")
+	desc := matcher.Description()
+	expectedDesc := "less than \"\""
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		ltTestCase{"", false, false, ""},
+		ltTestCase{"\x00", false, false, ""},
+		ltTestCase{"a", false, false, ""},
+		ltTestCase{"foo", false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessThanTest) SingleNullByte() {
+	matcher := LessThan("\x00")
+	desc := matcher.Description()
+	expectedDesc := "less than \"\x00\""
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		ltTestCase{"", true, false, ""},
+		ltTestCase{"\x00", false, false, ""},
+		ltTestCase{"a", false, false, ""},
+		ltTestCase{"foo", false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
+
+func (t *LessThanTest) LongerString() {
+	matcher := LessThan("foo\x00")
+	desc := matcher.Description()
+	expectedDesc := "less than \"foo\x00\""
+
+	ExpectThat(desc, Equals(expectedDesc))
+
+	cases := []ltTestCase{
+		ltTestCase{"", true, false, ""},
+		ltTestCase{"\x00", true, false, ""},
+		ltTestCase{"bar", true, false, ""},
+		ltTestCase{"foo", true, false, ""},
+		ltTestCase{"foo\x00", false, false, ""},
+		ltTestCase{"fooa", false, false, ""},
+		ltTestCase{"qux", false, false, ""},
+	}
+
+	t.checkTestCases(matcher, cases)
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/matcher.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/matcher.go
new file mode 100644
index 00000000000..78159a0727c
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/matcher.go
@@ -0,0 +1,86 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package oglematchers provides a set of matchers useful in a testing or
+// mocking framework. These matchers are inspired by and mostly compatible with
+// Google Test for C++ and Google JS Test.
+//
+// This package is used by github.com/smartystreets/assertions/internal/ogletest and
+// github.com/smartystreets/assertions/internal/oglemock, which may be more directly useful if you're not
+// writing your own testing package or defining your own matchers.
+package oglematchers
+
+// A Matcher is some predicate implicitly defining a set of values that it
+// matches. For example, GreaterThan(17) matches all numeric values greater
+// than 17, and HasSubstr("taco") matches all strings with the substring
+// "taco".
+//
+// Matchers are typically exposed to tests via constructor functions like
+// HasSubstr. In order to implement such a function you can either define your
+// own matcher type or use NewMatcher.
+type Matcher interface {
+	// Check whether the supplied value belongs to the the set defined by the
+	// matcher. Return a non-nil error if and only if it does not.
+	//
+	// The error describes why the value doesn't match. The error text is a
+	// relative clause that is suitable for being placed after the value. For
+	// example, a predicate that matches strings with a particular substring may,
+	// when presented with a numerical value, return the following error text:
+	//
+	//     "which is not a string"
+	//
+	// Then the failure message may look like:
+	//
+	//     Expected: has substring "taco"
+	//     Actual:   17, which is not a string
+	//
+	// If the error is self-apparent based on the description of the matcher, the
+	// error text may be empty (but the error still non-nil). For example:
+	//
+	//     Expected: 17
+	//     Actual:   19
+	//
+	// If you are implementing a new matcher, see also the documentation on
+	// FatalError.
+	Matches(candidate interface{}) error
+
+	// Description returns a string describing the property that values matching
+	// this matcher have, as a verb phrase where the subject is the value. For
+	// example, "is greather than 17" or "has substring "taco"".
+	Description() string
+}
+
+// FatalError is an implementation of the error interface that may be returned
+// from matchers, indicating the error should be propagated. Returning a
+// *FatalError indicates that the matcher doesn't process values of the
+// supplied type, or otherwise doesn't know how to handle the value.
+//
+// For example, if GreaterThan(17) returned false for the value "taco" without
+// a fatal error, then Not(GreaterThan(17)) would return true. This is
+// technically correct, but is surprising and may mask failures where the wrong
+// sort of matcher is accidentally used. Instead, GreaterThan(17) can return a
+// fatal error, which will be propagated by Not().
+type FatalError struct {
+	errorText string
+}
+
+// NewFatalError creates a FatalError struct with the supplied error text.
+func NewFatalError(s string) *FatalError {
+	return &FatalError{s}
+}
+
+func (e *FatalError) Error() string {
+	return e.errorText
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/matches_regexp.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/matches_regexp.go
new file mode 100644
index 00000000000..1ed63f30c4e
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/matches_regexp.go
@@ -0,0 +1,69 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"regexp"
+)
+
+// MatchesRegexp returns a matcher that matches strings and byte slices whose
+// contents match the supplied regular expression. The semantics are those of
+// regexp.Match. In particular, that means the match is not implicitly anchored
+// to the ends of the string: MatchesRegexp("bar") will match "foo bar baz".
+func MatchesRegexp(pattern string) Matcher {
+	re, err := regexp.Compile(pattern)
+	if err != nil {
+		panic("MatchesRegexp: " + err.Error())
+	}
+
+	return &matchesRegexpMatcher{re}
+}
+
+type matchesRegexpMatcher struct {
+	re *regexp.Regexp
+}
+
+func (m *matchesRegexpMatcher) Description() string {
+	return fmt.Sprintf("matches regexp \"%s\"", m.re.String())
+}
+
+func (m *matchesRegexpMatcher) Matches(c interface{}) (err error) {
+	v := reflect.ValueOf(c)
+	isString := v.Kind() == reflect.String
+	isByteSlice := v.Kind() == reflect.Slice && v.Elem().Kind() == reflect.Uint8
+
+	err = errors.New("")
+
+	switch {
+	case isString:
+		if m.re.MatchString(v.String()) {
+			err = nil
+		}
+
+	case isByteSlice:
+		if m.re.Match(v.Bytes()) {
+			err = nil
+		}
+
+	default:
+		err = NewFatalError("which is not a string or []byte")
+	}
+
+	return
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/matches_regexp_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/matches_regexp_test.go
new file mode 100644
index 00000000000..031c6cb3eff
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/matches_regexp_test.go
@@ -0,0 +1,92 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type MatchesRegexpTest struct {
+}
+
+func init() { RegisterTestSuite(&MatchesRegexpTest{}) }
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *MatchesRegexpTest) Description() {
+	m := MatchesRegexp("foo.*bar")
+	ExpectEq("matches regexp \"foo.*bar\"", m.Description())
+}
+
+func (t *MatchesRegexpTest) InvalidRegexp() {
+	ExpectThat(
+		func() { MatchesRegexp("(foo") },
+		Panics(HasSubstr("missing closing )")))
+}
+
+func (t *MatchesRegexpTest) CandidateIsNil() {
+	m := MatchesRegexp("")
+	err := m.Matches(nil)
+
+	ExpectThat(err, Error(Equals("which is not a string or []byte")))
+	ExpectTrue(isFatal(err))
+}
+
+func (t *MatchesRegexpTest) CandidateIsInteger() {
+	m := MatchesRegexp("")
+	err := m.Matches(17)
+
+	ExpectThat(err, Error(Equals("which is not a string or []byte")))
+	ExpectTrue(isFatal(err))
+}
+
+func (t *MatchesRegexpTest) NonMatchingCandidates() {
+	m := MatchesRegexp("fo[op]\\s+x")
+	var err error
+
+	err = m.Matches("fon x")
+	ExpectThat(err, Error(Equals("")))
+	ExpectFalse(isFatal(err))
+
+	err = m.Matches("fopx")
+	ExpectThat(err, Error(Equals("")))
+	ExpectFalse(isFatal(err))
+
+	err = m.Matches("fop   ")
+	ExpectThat(err, Error(Equals("")))
+	ExpectFalse(isFatal(err))
+}
+
+func (t *MatchesRegexpTest) MatchingCandidates() {
+	m := MatchesRegexp("fo[op]\\s+x")
+	var err error
+
+	err = m.Matches("foo x")
+	ExpectEq(nil, err)
+
+	err = m.Matches("fop     x")
+	ExpectEq(nil, err)
+
+	err = m.Matches("blah blah foo x blah blah")
+	ExpectEq(nil, err)
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/new_matcher.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/new_matcher.go
new file mode 100644
index 00000000000..c9d8398ee63
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/new_matcher.go
@@ -0,0 +1,43 @@
+// Copyright 2015 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+// Create a matcher with the given description and predicate function, which
+// will be invoked to handle calls to Matchers.
+//
+// Using this constructor may be a convenience over defining your own type that
+// implements Matcher if you do not need any logic in your Description method.
+func NewMatcher(
+	predicate func(interface{}) error,
+	description string) Matcher {
+	return &predicateMatcher{
+		predicate:   predicate,
+		description: description,
+	}
+}
+
+type predicateMatcher struct {
+	predicate   func(interface{}) error
+	description string
+}
+
+func (pm *predicateMatcher) Matches(c interface{}) error {
+	return pm.predicate(c)
+}
+
+func (pm *predicateMatcher) Description() string {
+	return pm.description
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/not.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/not.go
new file mode 100644
index 00000000000..623789fe28a
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/not.go
@@ -0,0 +1,53 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+)
+
+// Not returns a matcher that inverts the set of values matched by the wrapped
+// matcher. It does not transform the result for values for which the wrapped
+// matcher returns a fatal error.
+func Not(m Matcher) Matcher {
+	return &notMatcher{m}
+}
+
+type notMatcher struct {
+	wrapped Matcher
+}
+
+func (m *notMatcher) Matches(c interface{}) (err error) {
+	err = m.wrapped.Matches(c)
+
+	// Did the wrapped matcher say yes?
+	if err == nil {
+		return errors.New("")
+	}
+
+	// Did the wrapped matcher return a fatal error?
+	if _, isFatal := err.(*FatalError); isFatal {
+		return err
+	}
+
+	// The wrapped matcher returned a non-fatal error.
+	return nil
+}
+
+func (m *notMatcher) Description() string {
+	return fmt.Sprintf("not(%s)", m.wrapped.Description())
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/not_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/not_test.go
new file mode 100644
index 00000000000..9c65b85ef87
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/not_test.go
@@ -0,0 +1,108 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	"errors"
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+	"testing"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type fakeMatcher struct {
+	matchFunc   func(interface{}) error
+	description string
+}
+
+func (m *fakeMatcher) Matches(c interface{}) error {
+	return m.matchFunc(c)
+}
+
+func (m *fakeMatcher) Description() string {
+	return m.description
+}
+
+type NotTest struct {
+
+}
+
+func init()                     { RegisterTestSuite(&NotTest{}) }
+func TestOgletest(t *testing.T) { RunTests(t) }
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *NotTest) CallsWrapped() {
+	var suppliedCandidate interface{}
+	matchFunc := func(c interface{}) error {
+		suppliedCandidate = c
+		return nil
+	}
+
+	wrapped := &fakeMatcher{matchFunc, ""}
+	matcher := Not(wrapped)
+
+	matcher.Matches(17)
+	ExpectThat(suppliedCandidate, Equals(17))
+}
+
+func (t *NotTest) WrappedReturnsTrue() {
+	matchFunc := func(c interface{}) error {
+		return nil
+	}
+
+	wrapped := &fakeMatcher{matchFunc, ""}
+	matcher := Not(wrapped)
+
+	err := matcher.Matches(0)
+	ExpectThat(err, Error(Equals("")))
+}
+
+func (t *NotTest) WrappedReturnsNonFatalError() {
+	matchFunc := func(c interface{}) error {
+		return errors.New("taco")
+	}
+
+	wrapped := &fakeMatcher{matchFunc, ""}
+	matcher := Not(wrapped)
+
+	err := matcher.Matches(0)
+	ExpectEq(nil, err)
+}
+
+func (t *NotTest) WrappedReturnsFatalError() {
+	matchFunc := func(c interface{}) error {
+		return NewFatalError("taco")
+	}
+
+	wrapped := &fakeMatcher{matchFunc, ""}
+	matcher := Not(wrapped)
+
+	err := matcher.Matches(0)
+	ExpectThat(err, Error(Equals("taco")))
+}
+
+func (t *NotTest) Description() {
+	wrapped := &fakeMatcher{nil, "taco"}
+	matcher := Not(wrapped)
+
+	ExpectEq("not(taco)", matcher.Description())
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/panics.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/panics.go
new file mode 100644
index 00000000000..d2cfc97869b
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/panics.go
@@ -0,0 +1,74 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+)
+
+// Panics matches zero-arg functions which, when invoked, panic with an error
+// that matches the supplied matcher.
+//
+// NOTE(jacobsa): This matcher cannot detect the case where the function panics
+// using panic(nil), by design of the language. See here for more info:
+//
+//     http://goo.gl/9aIQL
+//
+func Panics(m Matcher) Matcher {
+	return &panicsMatcher{m}
+}
+
+type panicsMatcher struct {
+	wrappedMatcher Matcher
+}
+
+func (m *panicsMatcher) Description() string {
+	return "panics with: " + m.wrappedMatcher.Description()
+}
+
+func (m *panicsMatcher) Matches(c interface{}) (err error) {
+	// Make sure c is a zero-arg function.
+	v := reflect.ValueOf(c)
+	if v.Kind() != reflect.Func || v.Type().NumIn() != 0 {
+		err = NewFatalError("which is not a zero-arg function")
+		return
+	}
+
+	// Call the function and check its panic error.
+	defer func() {
+		if e := recover(); e != nil {
+			err = m.wrappedMatcher.Matches(e)
+
+			// Set a clearer error message if the matcher said no.
+			if err != nil {
+				wrappedClause := ""
+				if err.Error() != "" {
+					wrappedClause = ", " + err.Error()
+				}
+
+				err = errors.New(fmt.Sprintf("which panicked with: %v%s", e, wrappedClause))
+			}
+		}
+	}()
+
+	v.Call([]reflect.Value{})
+
+	// If we get here, the function didn't panic.
+	err = errors.New("which didn't panic")
+	return
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/panics_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/panics_test.go
new file mode 100644
index 00000000000..fbb66bf31e2
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/panics_test.go
@@ -0,0 +1,141 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	"errors"
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type PanicsTest struct {
+	matcherCalled bool
+	suppliedCandidate interface{}
+	wrappedError error
+
+	matcher Matcher
+}
+
+func init() { RegisterTestSuite(&PanicsTest{}) }
+
+func (t *PanicsTest) SetUp(i *TestInfo) {
+	wrapped := &fakeMatcher{
+		func(c interface{}) error {
+			t.matcherCalled = true
+			t.suppliedCandidate = c
+			return t.wrappedError
+		},
+		"foo",
+	}
+
+	t.matcher = Panics(wrapped)
+}
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *PanicsTest) Description() {
+	ExpectThat(t.matcher.Description(), Equals("panics with: foo"))
+}
+
+func (t *PanicsTest) CandidateIsNil() {
+	err := t.matcher.Matches(nil)
+
+	ExpectThat(err, Error(Equals("which is not a zero-arg function")))
+	ExpectTrue(isFatal(err))
+}
+
+func (t *PanicsTest) CandidateIsString() {
+	err := t.matcher.Matches("taco")
+
+	ExpectThat(err, Error(Equals("which is not a zero-arg function")))
+	ExpectTrue(isFatal(err))
+}
+
+func (t *PanicsTest) CandidateTakesArgs() {
+	err := t.matcher.Matches(func(i int) string { return "" })
+
+	ExpectThat(err, Error(Equals("which is not a zero-arg function")))
+	ExpectTrue(isFatal(err))
+}
+
+func (t *PanicsTest) CallsFunction() {
+	callCount := 0
+	t.matcher.Matches(func() string {
+		callCount++
+		return ""
+	})
+
+	ExpectThat(callCount, Equals(1))
+}
+
+func (t *PanicsTest) FunctionDoesntPanic() {
+	err := t.matcher.Matches(func() {})
+
+	ExpectThat(err, Error(Equals("which didn't panic")))
+	ExpectFalse(isFatal(err))
+}
+
+func (t *PanicsTest) CallsWrappedMatcher() {
+	expectedErr := 17
+	t.wrappedError = errors.New("")
+	t.matcher.Matches(func() { panic(expectedErr) })
+
+	ExpectThat(t.suppliedCandidate, Equals(expectedErr))
+}
+
+func (t *PanicsTest) WrappedReturnsTrue() {
+	err := t.matcher.Matches(func() { panic("") })
+
+	ExpectEq(nil, err)
+}
+
+func (t *PanicsTest) WrappedReturnsFatalErrorWithoutText() {
+	t.wrappedError = NewFatalError("")
+	err := t.matcher.Matches(func() { panic(17) })
+
+	ExpectThat(err, Error(Equals("which panicked with: 17")))
+	ExpectFalse(isFatal(err))
+}
+
+func (t *PanicsTest) WrappedReturnsFatalErrorWithText() {
+	t.wrappedError = NewFatalError("which blah")
+	err := t.matcher.Matches(func() { panic(17) })
+
+	ExpectThat(err, Error(Equals("which panicked with: 17, which blah")))
+	ExpectFalse(isFatal(err))
+}
+
+func (t *PanicsTest) WrappedReturnsNonFatalErrorWithoutText() {
+	t.wrappedError = errors.New("")
+	err := t.matcher.Matches(func() { panic(17) })
+
+	ExpectThat(err, Error(Equals("which panicked with: 17")))
+	ExpectFalse(isFatal(err))
+}
+
+func (t *PanicsTest) WrappedReturnsNonFatalErrorWithText() {
+	t.wrappedError = errors.New("which blah")
+	err := t.matcher.Matches(func() { panic(17) })
+
+	ExpectThat(err, Error(Equals("which panicked with: 17, which blah")))
+	ExpectFalse(isFatal(err))
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/pointee.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/pointee.go
new file mode 100644
index 00000000000..c5383f2402f
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/pointee.go
@@ -0,0 +1,65 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+)
+
+// Return a matcher that matches non-nil pointers whose pointee matches the
+// wrapped matcher.
+func Pointee(m Matcher) Matcher {
+	return &pointeeMatcher{m}
+}
+
+type pointeeMatcher struct {
+	wrapped Matcher
+}
+
+func (m *pointeeMatcher) Matches(c interface{}) (err error) {
+	// Make sure the candidate is of the appropriate type.
+	cv := reflect.ValueOf(c)
+	if !cv.IsValid() || cv.Kind() != reflect.Ptr {
+		return NewFatalError("which is not a pointer")
+	}
+
+	// Make sure the candidate is non-nil.
+	if cv.IsNil() {
+		return NewFatalError("")
+	}
+
+	// Defer to the wrapped matcher. Fix up empty errors so that failure messages
+	// are more helpful than just printing a pointer for "Actual".
+	pointee := cv.Elem().Interface()
+	err = m.wrapped.Matches(pointee)
+	if err != nil && err.Error() == "" {
+		s := fmt.Sprintf("whose pointee is %v", pointee)
+
+		if _, ok := err.(*FatalError); ok {
+			err = NewFatalError(s)
+		} else {
+			err = errors.New(s)
+		}
+	}
+
+	return err
+}
+
+func (m *pointeeMatcher) Description() string {
+	return fmt.Sprintf("pointee(%s)", m.wrapped.Description())
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/pointee_test.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/pointee_test.go
new file mode 100644
index 00000000000..3bb72a702be
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/pointee_test.go
@@ -0,0 +1,152 @@
+// Copyright 2012 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers_test
+
+import (
+	"errors"
+	. "github.com/smartystreets/assertions/internal/oglematchers"
+	. "github.com/smartystreets/assertions/internal/ogletest"
+	"testing"
+)
+
+////////////////////////////////////////////////////////////////////////
+// Helpers
+////////////////////////////////////////////////////////////////////////
+
+type PointeeTest struct {}
+func init()                     { RegisterTestSuite(&PointeeTest{}) }
+
+func TestPointee(t *testing.T) { RunTests(t) }
+
+////////////////////////////////////////////////////////////////////////
+// Tests
+////////////////////////////////////////////////////////////////////////
+
+func (t *PointeeTest) Description() {
+	wrapped := &fakeMatcher{nil, "taco"}
+	matcher := Pointee(wrapped)
+
+	ExpectEq("pointee(taco)", matcher.Description())
+}
+
+func (t *PointeeTest) CandidateIsNotAPointer() {
+	matcher := Pointee(HasSubstr(""))
+	err := matcher.Matches([]byte{})
+
+	ExpectThat(err, Error(Equals("which is not a pointer")))
+	ExpectTrue(isFatal(err))
+}
+
+func (t *PointeeTest) CandidateIsANilLiteral() {
+	matcher := Pointee(HasSubstr(""))
+	err := matcher.Matches(nil)
+
+	ExpectThat(err, Error(Equals("which is not a pointer")))
+	ExpectTrue(isFatal(err))
+}
+
+func (t *PointeeTest) CandidateIsANilPointer() {
+	matcher := Pointee(HasSubstr(""))
+	err := matcher.Matches((*int)(nil))
+
+	ExpectThat(err, Error(Equals("")))
+	ExpectTrue(isFatal(err))
+}
+
+func (t *PointeeTest) CallsWrapped() {
+	var suppliedCandidate interface{}
+	matchFunc := func(c interface{}) error {
+		suppliedCandidate = c
+		return nil
+	}
+
+	wrapped := &fakeMatcher{matchFunc, ""}
+	matcher := Pointee(wrapped)
+
+	someSlice := []byte{}
+	matcher.Matches(&someSlice)
+	ExpectThat(suppliedCandidate, IdenticalTo(someSlice))
+}
+
+func (t *PointeeTest) WrappedReturnsOkay() {
+	matchFunc := func(c interface{}) error {
+		return nil
+	}
+
+	wrapped := &fakeMatcher{matchFunc, ""}
+	matcher := Pointee(wrapped)
+
+	err := matcher.Matches(new(int))
+	ExpectEq(nil, err)
+}
+
+func (t *PointeeTest) WrappedReturnsNonFatalNonEmptyError() {
+	matchFunc := func(c interface{}) error {
+		return errors.New("taco")
+	}
+
+	wrapped := &fakeMatcher{matchFunc, ""}
+	matcher := Pointee(wrapped)
+
+	i := 17
+	err := matcher.Matches(&i)
+	ExpectFalse(isFatal(err))
+	ExpectThat(err, Error(Equals("taco")))
+}
+
+func (t *PointeeTest) WrappedReturnsNonFatalEmptyError() {
+	matchFunc := func(c interface{}) error {
+		return errors.New("")
+	}
+
+	wrapped := &fakeMatcher{matchFunc, ""}
+	matcher := Pointee(wrapped)
+
+	i := 17
+	err := matcher.Matches(&i)
+	ExpectFalse(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("whose pointee")))
+	ExpectThat(err, Error(HasSubstr("17")))
+}
+
+func (t *PointeeTest) WrappedReturnsFatalNonEmptyError() {
+	matchFunc := func(c interface{}) error {
+		return NewFatalError("taco")
+	}
+
+	wrapped := &fakeMatcher{matchFunc, ""}
+	matcher := Pointee(wrapped)
+
+	i := 17
+	err := matcher.Matches(&i)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(Equals("taco")))
+}
+
+func (t *PointeeTest) WrappedReturnsFatalEmptyError() {
+	matchFunc := func(c interface{}) error {
+		return NewFatalError("")
+	}
+
+	wrapped := &fakeMatcher{matchFunc, ""}
+	matcher := Pointee(wrapped)
+
+	i := 17
+	err := matcher.Matches(&i)
+	ExpectTrue(isFatal(err))
+	ExpectThat(err, Error(HasSubstr("whose pointee")))
+	ExpectThat(err, Error(HasSubstr("17")))
+}
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/transform_description.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/transform_description.go
new file mode 100644
index 00000000000..f79d0c03db1
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/internal/oglematchers/transform_description.go
@@ -0,0 +1,36 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+// transformDescription returns a matcher that is equivalent to the supplied
+// one, except that it has the supplied description instead of the one attached
+// to the existing matcher.
+func transformDescription(m Matcher, newDesc string) Matcher {
+	return &transformDescriptionMatcher{newDesc, m}
+}
+
+type transformDescriptionMatcher struct {
+	desc string
+	wrappedMatcher Matcher
+}
+
+func (m *transformDescriptionMatcher) Description() string {
+	return m.desc
+}
+
+func (m *transformDescriptionMatcher) Matches(c interface{}) error {
+	return m.wrappedMatcher.Matches(c)
+}