// Copyright 2014 The Gogs Authors. All rights reserved.// Copyright 2019 The Gitea Authors. All rights reserved.// Use of this source code is governed by a MIT-style// license that can be found in the LICENSE file. package gitdiff import (	"fmt"	"html/template"	"strings"	"testing" 	"code.gitea.io/gitea/models"	"code.gitea.io/gitea/modules/git"	"code.gitea.io/gitea/modules/setting" 	"gopkg.in/ini.v1" 	dmp "github.com/sergi/go-diff/diffmatchpatch"	"github.com/stretchr/testify/assert") func assertEqual(t *testing.T, s1 string, s2 template.HTML) {	if s1 != string(s2) {		t.Errorf("%s should be equal %s", s2, s1)	}} func TestDiffToHTML(t *testing.T) {	setting.Cfg = ini.Empty()	assertEqual(t, "foo <span class=\"added-code\">bar</span> biz", diffToHTML("", []dmp.Diff{		{Type: dmp.DiffEqual, Text: "foo "},		{Type: dmp.DiffInsert, Text: "bar"},		{Type: dmp.DiffDelete, Text: " baz"},		{Type: dmp.DiffEqual, Text: " biz"},	}, DiffLineAdd)) 	assertEqual(t, "foo <span class=\"removed-code\">bar</span> biz", diffToHTML("", []dmp.Diff{		{Type: dmp.DiffEqual, Text: "foo "},		{Type: dmp.DiffDelete, Text: "bar"},		{Type: dmp.DiffInsert, Text: " baz"},		{Type: dmp.DiffEqual, Text: " biz"},	}, DiffLineDel))} func TestParsePatch(t *testing.T) {	var diff = `diff --git "a/README.md" "b/README.md"--- a/README.md+++ b/README.md@@ -1,3 +1,6 @@ # gitea-github-migrator++ Build Status- Latest Release Docker Pulls+ cut off+ cut off`	result, err := ParsePatch(setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles, strings.NewReader(diff))	if err != nil {		t.Errorf("ParsePatch failed: %s", err)	}	println(result) 	var diff2 = `diff --git "a/A \\ B" "b/A \\ B"--- "a/A \\ B"+++ "b/A \\ B"@@ -1,3 +1,6 @@ # gitea-github-migrator++ Build Status- Latest Release Docker Pulls+ cut off+ cut off`	result, err = ParsePatch(setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles, strings.NewReader(diff2))	if err != nil {		t.Errorf("ParsePatch failed: %s", err)	}	println(result) 	var diff3 = `diff --git a/README.md b/README.md--- a/README.md+++ b/README.md@@ -1,3 +1,6 @@ # gitea-github-migrator++ Build Status- Latest Release Docker Pulls+ cut off+ cut off`	result, err = ParsePatch(setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles, strings.NewReader(diff3))	if err != nil {		t.Errorf("ParsePatch failed: %s", err)	}	println(result)} func setupDefaultDiff() *Diff {	return &Diff{		Files: []*DiffFile{			{				Name: "README.md",				Sections: []*DiffSection{					{						Lines: []*DiffLine{							{								LeftIdx:  4,								RightIdx: 4,							},						},					},				},			},		},	}}func TestDiff_LoadComments(t *testing.T) {	assert.NoError(t, models.PrepareTestDatabase()) 	issue := models.AssertExistsAndLoadBean(t, &models.Issue{ID: 2}).(*models.Issue)	user := models.AssertExistsAndLoadBean(t, &models.User{ID: 1}).(*models.User)	diff := setupDefaultDiff()	assert.NoError(t, diff.LoadComments(issue, user))	assert.Len(t, diff.Files[0].Sections[0].Lines[0].Comments, 2)} func TestDiffLine_CanComment(t *testing.T) {	assert.False(t, (&DiffLine{Type: DiffLineSection}).CanComment())	assert.False(t, (&DiffLine{Type: DiffLineAdd, Comments: []*models.Comment{{Content: "bla"}}}).CanComment())	assert.True(t, (&DiffLine{Type: DiffLineAdd}).CanComment())	assert.True(t, (&DiffLine{Type: DiffLineDel}).CanComment())	assert.True(t, (&DiffLine{Type: DiffLinePlain}).CanComment())} func TestDiffLine_GetCommentSide(t *testing.T) {	assert.Equal(t, "previous", (&DiffLine{Comments: []*models.Comment{{Line: -3}}}).GetCommentSide())	assert.Equal(t, "proposed", (&DiffLine{Comments: []*models.Comment{{Line: 3}}}).GetCommentSide())} func TestGetDiffRangeWithWhitespaceBehavior(t *testing.T) {	git.Debug = true	for _, behavior := range []string{"-w", "--ignore-space-at-eol", "-b", ""} {		diffs, err := GetDiffRangeWithWhitespaceBehavior("./testdata/academic-module", "559c156f8e0178b71cb44355428f24001b08fc68", "bd7063cc7c04689c4d082183d32a604ed27a24f9",			setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffFiles, behavior)		assert.NoError(t, err, fmt.Sprintf("Error when diff with %s", behavior))		for _, f := range diffs.Files {			assert.True(t, len(f.Sections) > 0, fmt.Sprintf("%s should have sections", f.Name))		}	}}