1// Copyright 2022 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package doc
6
7import (
8	"bytes"
9	"go/parser"
10	"go/token"
11	"internal/diff"
12	"testing"
13)
14
15func TestComment(t *testing.T) {
16	fset := token.NewFileSet()
17	pkgs, err := parser.ParseDir(fset, "testdata/pkgdoc", nil, parser.ParseComments)
18	if err != nil {
19		t.Fatal(err)
20	}
21	if pkgs["pkgdoc"] == nil {
22		t.Fatal("missing package pkgdoc")
23	}
24	pkg := New(pkgs["pkgdoc"], "testdata/pkgdoc", 0)
25
26	var (
27		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. [G.M1] and [G.M2] are generic methods.\n"
28		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. <a href="#G.M1">G.M1</a> and <a href="#G.M2">G.M2</a> are generic methods.` + "\n"
29		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. [G.M1] and [G.M2] are generic methods.\n"
30		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. [G.M1](#G.M1) and [G.M2](#G.M2) are generic methods.\n"
31		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. G.M1 and G.M2 are generic methods.\n"
32		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. [G.M1] and [G.M2] are generic methods.\n"
33		wantSynopsis    = "T and U are types, and T.M is a method, but [V] is a broken link."
34		wantOldSynopsis = "[T] and [U] are types, and [T.M] is a method, but [V] is a broken link."
35	)
36
37	if b := pkg.HTML(input); string(b) != wantHTML {
38		t.Errorf("%s", diff.Diff("pkg.HTML", b, "want", []byte(wantHTML)))
39	}
40	if b := pkg.Markdown(input); string(b) != wantMarkdown {
41		t.Errorf("%s", diff.Diff("pkg.Markdown", b, "want", []byte(wantMarkdown)))
42	}
43	if b := pkg.Text(input); string(b) != wantText {
44		t.Errorf("%s", diff.Diff("pkg.Text", b, "want", []byte(wantText)))
45	}
46	if b := pkg.Synopsis(input); b != wantSynopsis {
47		t.Errorf("%s", diff.Diff("pkg.Synopsis", []byte(b), "want", []byte(wantText)))
48	}
49
50	var buf bytes.Buffer
51
52	buf.Reset()
53	ToHTML(&buf, input, map[string]string{"types": ""})
54	if b := buf.Bytes(); string(b) != wantOldHTML {
55		t.Errorf("%s", diff.Diff("ToHTML", b, "want", []byte(wantOldHTML)))
56	}
57
58	buf.Reset()
59	ToText(&buf, input, "", "\t", 80)
60	if b := buf.Bytes(); string(b) != wantOldText {
61		t.Errorf("%s", diff.Diff("ToText", b, "want", []byte(wantOldText)))
62	}
63
64	if b := Synopsis(input); b != wantOldSynopsis {
65		t.Errorf("%s", diff.Diff("Synopsis", []byte(b), "want", []byte(wantOldText)))
66	}
67}
68