diff options
Diffstat (limited to 'libgo/go/html/template/template_test.go')
| -rw-r--r-- | libgo/go/html/template/template_test.go | 132 |
1 files changed, 130 insertions, 2 deletions
diff --git a/libgo/go/html/template/template_test.go b/libgo/go/html/template/template_test.go index 6f70d67de9..90c5a73ba7 100644 --- a/libgo/go/html/template/template_test.go +++ b/libgo/go/html/template/template_test.go @@ -1,7 +1,13 @@ -package template +// Copyright 2016 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package template_test import ( "bytes" + . "html/template" + "strings" "testing" ) @@ -13,7 +19,7 @@ func TestTemplateClone(t *testing.T) { t.Fatal(err) } if len(clone.Templates()) != len(orig.Templates()) { - t.Fatalf("Invalid lenth of t.Clone().Templates()") + t.Fatalf("Invalid length of t.Clone().Templates()") } const want = "stuff" @@ -27,3 +33,125 @@ func TestTemplateClone(t *testing.T) { t.Fatalf("got %q; want %q", got, want) } } + +func TestRedefineNonEmptyAfterExecution(t *testing.T) { + c := newTestCase(t) + c.mustParse(c.root, `foo`) + c.mustExecute(c.root, nil, "foo") + c.mustNotParse(c.root, `bar`) +} + +func TestRedefineEmptyAfterExecution(t *testing.T) { + c := newTestCase(t) + c.mustParse(c.root, ``) + c.mustExecute(c.root, nil, "") + c.mustNotParse(c.root, `foo`) + c.mustExecute(c.root, nil, "") +} + +func TestRedefineAfterNonExecution(t *testing.T) { + c := newTestCase(t) + c.mustParse(c.root, `{{if .}}<{{template "X"}}>{{end}}{{define "X"}}foo{{end}}`) + c.mustExecute(c.root, 0, "") + c.mustNotParse(c.root, `{{define "X"}}bar{{end}}`) + c.mustExecute(c.root, 1, "<foo>") +} + +func TestRedefineAfterNamedExecution(t *testing.T) { + c := newTestCase(t) + c.mustParse(c.root, `<{{template "X" .}}>{{define "X"}}foo{{end}}`) + c.mustExecute(c.root, nil, "<foo>") + c.mustNotParse(c.root, `{{define "X"}}bar{{end}}`) + c.mustExecute(c.root, nil, "<foo>") +} + +func TestRedefineNestedByNameAfterExecution(t *testing.T) { + c := newTestCase(t) + c.mustParse(c.root, `{{define "X"}}foo{{end}}`) + c.mustExecute(c.lookup("X"), nil, "foo") + c.mustNotParse(c.root, `{{define "X"}}bar{{end}}`) + c.mustExecute(c.lookup("X"), nil, "foo") +} + +func TestRedefineNestedByTemplateAfterExecution(t *testing.T) { + c := newTestCase(t) + c.mustParse(c.root, `{{define "X"}}foo{{end}}`) + c.mustExecute(c.lookup("X"), nil, "foo") + c.mustNotParse(c.lookup("X"), `bar`) + c.mustExecute(c.lookup("X"), nil, "foo") +} + +func TestRedefineSafety(t *testing.T) { + c := newTestCase(t) + c.mustParse(c.root, `<html><a href="{{template "X"}}">{{define "X"}}{{end}}`) + c.mustExecute(c.root, nil, `<html><a href="">`) + // Note: Every version of Go prior to Go 1.8 accepted the redefinition of "X" + // on the next line, but luckily kept it from being used in the outer template. + // Now we reject it, which makes clearer that we're not going to use it. + c.mustNotParse(c.root, `{{define "X"}}" bar="baz{{end}}`) + c.mustExecute(c.root, nil, `<html><a href="">`) +} + +func TestRedefineTopUse(t *testing.T) { + c := newTestCase(t) + c.mustParse(c.root, `{{template "X"}}{{.}}{{define "X"}}{{end}}`) + c.mustExecute(c.root, 42, `42`) + c.mustNotParse(c.root, `{{define "X"}}<script>{{end}}`) + c.mustExecute(c.root, 42, `42`) +} + +func TestRedefineOtherParsers(t *testing.T) { + c := newTestCase(t) + c.mustParse(c.root, ``) + c.mustExecute(c.root, nil, ``) + if _, err := c.root.ParseFiles("no.template"); err == nil || !strings.Contains(err.Error(), "Execute") { + t.Errorf("ParseFiles: %v\nwanted error about already having Executed", err) + } + if _, err := c.root.ParseGlob("*.no.template"); err == nil || !strings.Contains(err.Error(), "Execute") { + t.Errorf("ParseGlob: %v\nwanted error about already having Executed", err) + } + if _, err := c.root.AddParseTree("t1", c.root.Tree); err == nil || !strings.Contains(err.Error(), "Execute") { + t.Errorf("AddParseTree: %v\nwanted error about already having Executed", err) + } +} + +type testCase struct { + t *testing.T + root *Template +} + +func newTestCase(t *testing.T) *testCase { + return &testCase{ + t: t, + root: New("root"), + } +} + +func (c *testCase) lookup(name string) *Template { + return c.root.Lookup(name) +} + +func (c *testCase) mustParse(t *Template, text string) { + _, err := t.Parse(text) + if err != nil { + c.t.Fatalf("parse: %v", err) + } +} + +func (c *testCase) mustNotParse(t *Template, text string) { + _, err := t.Parse(text) + if err == nil { + c.t.Fatalf("parse: unexpected success") + } +} + +func (c *testCase) mustExecute(t *Template, val interface{}, want string) { + var buf bytes.Buffer + err := t.Execute(&buf, val) + if err != nil { + c.t.Fatalf("execute: %v", err) + } + if buf.String() != want { + c.t.Fatalf("template output:\n%s\nwant:\n%s", buf.String(), want) + } +} |