go comment_test 源码

2022-07-15
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golang comment_test 代码

文件路径：/src/go/doc/comment_test.go

// Copyright 2022 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 doc

import (
	"bytes"
	"go/parser"
	"go/token"
	"internal/diff"
	"testing"
)

func TestComment(t *testing.T) {
	fset := token.NewFileSet()
	pkgs, err := parser.ParseDir(fset, "testdata/pkgdoc", nil, parser.ParseComments)
	if err != nil {
		t.Fatal(err)
	}
	if pkgs["pkgdoc"] == nil {
		t.Fatal("missing package pkgdoc")
	}
	pkg := New(pkgs["pkgdoc"], "testdata/pkgdoc", 0)

	var (
		input           = "[T] and [U] are types, and [T.M] is a method, but [V] is a broken link. [rand.Int] and [crand.Reader] are things.\n"
		wantHTML        = `<p><a href="#T">T</a> and <a href="#U">U</a> are types, and <a href="#T.M">T.M</a> is a method, but [V] is a broken link. <a href="/math/rand#Int">rand.Int</a> and <a href="/crypto/rand#Reader">crand.Reader</a> are things.` + "\n"
		wantOldHTML     = "<p>[T] and [U] are <i>types</i>, and [T.M] is a method, but [V] is a broken link. [rand.Int] and [crand.Reader] are things.\n"
		wantMarkdown    = "[T](#T) and [U](#U) are types, and [T.M](#T.M) is a method, but \\[V] is a broken link. [rand.Int](/math/rand#Int) and [crand.Reader](/crypto/rand#Reader) are things.\n"
		wantText        = "T and U are types, and T.M is a method, but [V] is a broken link. rand.Int and\ncrand.Reader are things.\n"
		wantOldText     = "[T] and [U] are types, and [T.M] is a method, but [V] is a broken link.\n[rand.Int] and [crand.Reader] are things.\n"
		wantSynopsis    = "T and U are types, and T.M is a method, but [V] is a broken link."
		wantOldSynopsis = "[T] and [U] are types, and [T.M] is a method, but [V] is a broken link."
	)

	if b := pkg.HTML(input); string(b) != wantHTML {
		t.Errorf("%s", diff.Diff("pkg.HTML", b, "want", []byte(wantHTML)))
	}
	if b := pkg.Markdown(input); string(b) != wantMarkdown {
		t.Errorf("%s", diff.Diff("pkg.Markdown", b, "want", []byte(wantMarkdown)))
	}
	if b := pkg.Text(input); string(b) != wantText {
		t.Errorf("%s", diff.Diff("pkg.Text", b, "want", []byte(wantText)))
	}
	if b := pkg.Synopsis(input); b != wantSynopsis {
		t.Errorf("%s", diff.Diff("pkg.Synopsis", []byte(b), "want", []byte(wantText)))
	}

	var buf bytes.Buffer

	buf.Reset()
	ToHTML(&buf, input, map[string]string{"types": ""})
	if b := buf.Bytes(); string(b) != wantOldHTML {
		t.Errorf("%s", diff.Diff("ToHTML", b, "want", []byte(wantOldHTML)))
	}

	buf.Reset()
	ToText(&buf, input, "", "\t", 80)
	if b := buf.Bytes(); string(b) != wantOldText {
		t.Errorf("%s", diff.Diff("ToText", b, "want", []byte(wantOldText)))
	}

	if b := Synopsis(input); b != wantOldSynopsis {
		t.Errorf("%s", diff.Diff("Synopsis", []byte(b), "want", []byte(wantOldText)))
	}
}

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本文标签： golang
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