1 files changed, 280 insertions, 0 deletions
diff --git a/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/equality.go b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/equality.go
new file mode 100644
index 00000000000..2b6049c37d9
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/smartystreets/assertions/equality.go
@@ -0,0 +1,280 @@
+package assertions
+
+import (
+	"errors"
+	"fmt"
+	"math"
+	"reflect"
+	"strings"
+
+	"github.com/smartystreets/assertions/internal/oglematchers"
+	"github.com/smartystreets/assertions/internal/go-render/render"
+)
+
+// default acceptable delta for ShouldAlmostEqual
+const defaultDelta = 0.0000000001
+
+// ShouldEqual receives exactly two parameters and does an equality check.
+func ShouldEqual(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	}
+	return shouldEqual(actual, expected[0])
+}
+func shouldEqual(actual, expected interface{}) (message string) {
+	defer func() {
+		if r := recover(); r != nil {
+			message = serializer.serialize(expected, actual, fmt.Sprintf(shouldHaveBeenEqual, expected, actual))
+			return
+		}
+	}()
+
+	if matchError := oglematchers.Equals(expected).Matches(actual); matchError != nil {
+		expectedSyntax := fmt.Sprintf("%v", expected)
+		actualSyntax := fmt.Sprintf("%v", actual)
+		if expectedSyntax == actualSyntax && reflect.TypeOf(expected) != reflect.TypeOf(actual) {
+			message = fmt.Sprintf(shouldHaveBeenEqualTypeMismatch, expected, expected, actual, actual)
+		} else {
+			message = fmt.Sprintf(shouldHaveBeenEqual, expected, actual)
+		}
+		message = serializer.serialize(expected, actual, message)
+		return
+	}
+
+	return success
+}
+
+// ShouldNotEqual receives exactly two parameters and does an inequality check.
+func ShouldNotEqual(actual interface{}, expected ...interface{}) string {
+	if fail := need(1, expected); fail != success {
+		return fail
+	} else if ShouldEqual(actual, expected[0]) == success {
+		return fmt.Sprintf(shouldNotHaveBeenEqual, actual, expected[0])
+	}
+	return success
+}
+
+// ShouldAlmostEqual makes sure that two parameters are close enough to being equal.
+// The acceptable delta may be specified with a third argument,
+// or a very small default delta will be used.
+func ShouldAlmostEqual(actual interface{}, expected ...interface{}) string {
+	actualFloat, expectedFloat, deltaFloat, err := cleanAlmostEqualInput(actual, expected...)
+
+	if err != "" {
+		return err
+	}
+
+	if math.Abs(actualFloat-expectedFloat) <= deltaFloat {
+		return success
+	} else {
+		return fmt.Sprintf(shouldHaveBeenAlmostEqual, actualFloat, expectedFloat)
+	}
+}
+
+// ShouldNotAlmostEqual is the inverse of ShouldAlmostEqual
+func ShouldNotAlmostEqual(actual interface{}, expected ...interface{}) string {
+	actualFloat, expectedFloat, deltaFloat, err := cleanAlmostEqualInput(actual, expected...)
+
+	if err != "" {
+		return err
+	}
+
+	if math.Abs(actualFloat-expectedFloat) > deltaFloat {
+		return success
+	} else {
+		return fmt.Sprintf(shouldHaveNotBeenAlmostEqual, actualFloat, expectedFloat)
+	}
+}
+
+func cleanAlmostEqualInput(actual interface{}, expected ...interface{}) (float64, float64, float64, string) {
+	deltaFloat := 0.0000000001
+
+	if len(expected) == 0 {
+		return 0.0, 0.0, 0.0, "This assertion requires exactly one comparison value and an optional delta (you provided neither)"
+	} else if len(expected) == 2 {
+		delta, err := getFloat(expected[1])
+
+		if err != nil {
+			return 0.0, 0.0, 0.0, "delta must be a numerical type"
+		}
+
+		deltaFloat = delta
+	} else if len(expected) > 2 {
+		return 0.0, 0.0, 0.0, "This assertion requires exactly one comparison value and an optional delta (you provided more values)"
+	}
+
+	actualFloat, err := getFloat(actual)
+
+	if err != nil {
+		return 0.0, 0.0, 0.0, err.Error()
+	}
+
+	expectedFloat, err := getFloat(expected[0])
+
+	if err != nil {
+		return 0.0, 0.0, 0.0, err.Error()
+	}
+
+	return actualFloat, expectedFloat, deltaFloat, ""
+}
+
+// returns the float value of any real number, or error if it is not a numerical type
+func getFloat(num interface{}) (float64, error) {
+	numValue := reflect.ValueOf(num)
+	numKind := numValue.Kind()
+
+	if numKind == reflect.Int ||
+		numKind == reflect.Int8 ||
+		numKind == reflect.Int16 ||
+		numKind == reflect.Int32 ||
+		numKind == reflect.Int64 {
+		return float64(numValue.Int()), nil
+	} else if numKind == reflect.Uint ||
+		numKind == reflect.Uint8 ||
+		numKind == reflect.Uint16 ||
+		numKind == reflect.Uint32 ||
+		numKind == reflect.Uint64 {
+		return float64(numValue.Uint()), nil
+	} else if numKind == reflect.Float32 ||
+		numKind == reflect.Float64 {
+		return numValue.Float(), nil
+	} else {
+		return 0.0, errors.New("must be a numerical type, but was " + numKind.String())
+	}
+}
+
+// ShouldResemble receives exactly two parameters and does a deep equal check (see reflect.DeepEqual)
+func ShouldResemble(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	}
+
+	if matchError := oglematchers.DeepEquals(expected[0]).Matches(actual); matchError != nil {
+		return serializer.serializeDetailed(expected[0], actual,
+			fmt.Sprintf(shouldHaveResembled, render.Render(expected[0]), render.Render(actual)))
+	}
+
+	return success
+}
+
+// ShouldNotResemble receives exactly two parameters and does an inverse deep equal check (see reflect.DeepEqual)
+func ShouldNotResemble(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	} else if ShouldResemble(actual, expected[0]) == success {
+		return fmt.Sprintf(shouldNotHaveResembled, render.Render(actual), render.Render(expected[0]))
+	}
+	return success
+}
+
+// ShouldPointTo receives exactly two parameters and checks to see that they point to the same address.
+func ShouldPointTo(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	}
+	return shouldPointTo(actual, expected[0])
+
+}
+func shouldPointTo(actual, expected interface{}) string {
+	actualValue := reflect.ValueOf(actual)
+	expectedValue := reflect.ValueOf(expected)
+
+	if ShouldNotBeNil(actual) != success {
+		return fmt.Sprintf(shouldHaveBeenNonNilPointer, "first", "nil")
+	} else if ShouldNotBeNil(expected) != success {
+		return fmt.Sprintf(shouldHaveBeenNonNilPointer, "second", "nil")
+	} else if actualValue.Kind() != reflect.Ptr {
+		return fmt.Sprintf(shouldHaveBeenNonNilPointer, "first", "not")
+	} else if expectedValue.Kind() != reflect.Ptr {
+		return fmt.Sprintf(shouldHaveBeenNonNilPointer, "second", "not")
+	} else if ShouldEqual(actualValue.Pointer(), expectedValue.Pointer()) != success {
+		actualAddress := reflect.ValueOf(actual).Pointer()
+		expectedAddress := reflect.ValueOf(expected).Pointer()
+		return serializer.serialize(expectedAddress, actualAddress, fmt.Sprintf(shouldHavePointedTo,
+			actual, actualAddress,
+			expected, expectedAddress))
+	}
+	return success
+}
+
+// ShouldNotPointTo receives exactly two parameters and checks to see that they point to different addresess.
+func ShouldNotPointTo(actual interface{}, expected ...interface{}) string {
+	if message := need(1, expected); message != success {
+		return message
+	}
+	compare := ShouldPointTo(actual, expected[0])
+	if strings.HasPrefix(compare, shouldBePointers) {
+		return compare
+	} else if compare == success {
+		return fmt.Sprintf(shouldNotHavePointedTo, actual, expected[0], reflect.ValueOf(actual).Pointer())
+	}
+	return success
+}
+
+// ShouldBeNil receives a single parameter and ensures that it is nil.
+func ShouldBeNil(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	} else if actual == nil {
+		return success
+	} else if interfaceHasNilValue(actual) {
+		return success
+	}
+	return fmt.Sprintf(shouldHaveBeenNil, actual)
+}
+func interfaceHasNilValue(actual interface{}) bool {
+	value := reflect.ValueOf(actual)
+	kind := value.Kind()
+	nilable := kind == reflect.Slice ||
+		kind == reflect.Chan ||
+		kind == reflect.Func ||
+		kind == reflect.Ptr ||
+		kind == reflect.Map
+
+	// Careful: reflect.Value.IsNil() will panic unless it's an interface, chan, map, func, slice, or ptr
+	// Reference: http://golang.org/pkg/reflect/#Value.IsNil
+	return nilable && value.IsNil()
+}
+
+// ShouldNotBeNil receives a single parameter and ensures that it is not nil.
+func ShouldNotBeNil(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	} else if ShouldBeNil(actual) == success {
+		return fmt.Sprintf(shouldNotHaveBeenNil, actual)
+	}
+	return success
+}
+
+// ShouldBeTrue receives a single parameter and ensures that it is true.
+func ShouldBeTrue(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	} else if actual != true {
+		return fmt.Sprintf(shouldHaveBeenTrue, actual)
+	}
+	return success
+}
+
+// ShouldBeFalse receives a single parameter and ensures that it is false.
+func ShouldBeFalse(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	} else if actual != false {
+		return fmt.Sprintf(shouldHaveBeenFalse, actual)
+	}
+	return success
+}
+
+// ShouldBeZeroValue receives a single parameter and ensures that it is
+// the Go equivalent of the default value, or "zero" value.
+func ShouldBeZeroValue(actual interface{}, expected ...interface{}) string {
+	if fail := need(0, expected); fail != success {
+		return fail
+	}
+	zeroVal := reflect.Zero(reflect.TypeOf(actual)).Interface()
+	if !reflect.DeepEqual(zeroVal, actual) {
+		return serializer.serialize(zeroVal, actual, fmt.Sprintf(shouldHaveBeenZeroValue, actual))
+	}
+	return success
+}