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https://codeberg.org/forgejo/forgejo
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* Fix Syntax highlight for token change in added/deleted code For diffs we first syntax highlight the before and after line then use a 3rd party diff library to find the difference in them and create a substring based on that, which we then highlight a 2nd time to show the specific difference within a line that has changed. In a specific case if the diffrence also changes the chroma class it will split in the middle of the attr and cause broken HTML: ``` <span class="nx">oldtext<span> <span class="k">var newtext<span> ``` Will then split on ``` <span class=" ``` Where the difference starts, and produce something broken like: ``` <span class="<span class="removed-code">nx"oldtext</span></span ``` Fix that by detecting when it happens and putting the HTML back together properly before highlighting the added/deleted code. Fixes #12235 * fix lint * apply fix to all diff sections. Also handle case where insert/remove starts with a closing span * Add a test for this new code * remove comment Co-authored-by: Lauris BH <lauris@nix.lv>
161 lines
5.5 KiB
Go
161 lines
5.5 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package gitdiff
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import (
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"fmt"
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"html/template"
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"strings"
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"testing"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/setting"
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"gopkg.in/ini.v1"
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dmp "github.com/sergi/go-diff/diffmatchpatch"
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"github.com/stretchr/testify/assert"
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)
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func assertEqual(t *testing.T, s1 string, s2 template.HTML) {
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if s1 != string(s2) {
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t.Errorf("%s should be equal %s", s2, s1)
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}
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}
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func TestDiffToHTML(t *testing.T) {
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setting.Cfg = ini.Empty()
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assertEqual(t, "foo <span class=\"added-code\">bar</span> biz", diffToHTML("", []dmp.Diff{
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{Type: dmp.DiffEqual, Text: "foo "},
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{Type: dmp.DiffInsert, Text: "bar"},
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{Type: dmp.DiffDelete, Text: " baz"},
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{Type: dmp.DiffEqual, Text: " biz"},
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}, DiffLineAdd))
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assertEqual(t, "foo <span class=\"removed-code\">bar</span> biz", diffToHTML("", []dmp.Diff{
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{Type: dmp.DiffEqual, Text: "foo "},
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{Type: dmp.DiffDelete, Text: "bar"},
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{Type: dmp.DiffInsert, Text: " baz"},
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{Type: dmp.DiffEqual, Text: " biz"},
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}, DiffLineDel))
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assertEqual(t, "<span class=\"k\">if</span> <span class=\"p\">!</span><span class=\"nx\">nohl</span> <span class=\"o\">&&</span> <span class=\"added-code\"><span class=\"p\">(</span></span><span class=\"nx\">lexer</span> <span class=\"o\">!=</span> <span class=\"kc\">nil</span><span class=\"added-code\"> <span class=\"o\">||</span> <span class=\"nx\">r</span><span class=\"p\">.</span><span class=\"nx\">GuessLanguage</span><span class=\"p\">)</span></span> <span class=\"p\">{</span>", diffToHTML("", []dmp.Diff{
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{Type: dmp.DiffEqual, Text: "<span class=\"k\">if</span> <span class=\"p\">!</span><span class=\"nx\">nohl</span> <span class=\"o\">&&</span> <span class=\""},
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{Type: dmp.DiffInsert, Text: "p\">(</span><span class=\""},
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{Type: dmp.DiffEqual, Text: "nx\">lexer</span> <span class=\"o\">!=</span> <span class=\"kc\">nil"},
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{Type: dmp.DiffInsert, Text: "</span> <span class=\"o\">||</span> <span class=\"nx\">r</span><span class=\"p\">.</span><span class=\"nx\">GuessLanguage</span><span class=\"p\">)"},
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{Type: dmp.DiffEqual, Text: "</span> <span class=\"p\">{</span>"},
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}, DiffLineAdd))
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}
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func TestParsePatch(t *testing.T) {
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var diff = `diff --git "a/README.md" "b/README.md"
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--- a/README.md
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+++ b/README.md
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@@ -1,3 +1,6 @@
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# gitea-github-migrator
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+
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+ Build Status
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- Latest Release
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Docker Pulls
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+ cut off
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+ cut off`
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result, err := ParsePatch(setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles, strings.NewReader(diff))
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if err != nil {
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t.Errorf("ParsePatch failed: %s", err)
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}
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println(result)
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var diff2 = `diff --git "a/A \\ B" "b/A \\ B"
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--- "a/A \\ B"
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+++ "b/A \\ B"
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@@ -1,3 +1,6 @@
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# gitea-github-migrator
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+
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+ Build Status
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- Latest Release
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Docker Pulls
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+ cut off
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+ cut off`
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result, err = ParsePatch(setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles, strings.NewReader(diff2))
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if err != nil {
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t.Errorf("ParsePatch failed: %s", err)
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}
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println(result)
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var diff3 = `diff --git a/README.md b/README.md
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--- a/README.md
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+++ b/README.md
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@@ -1,3 +1,6 @@
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# gitea-github-migrator
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+
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+ Build Status
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- Latest Release
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Docker Pulls
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+ cut off
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+ cut off`
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result, err = ParsePatch(setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles, strings.NewReader(diff3))
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if err != nil {
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t.Errorf("ParsePatch failed: %s", err)
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}
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println(result)
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}
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func setupDefaultDiff() *Diff {
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return &Diff{
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Files: []*DiffFile{
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{
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Name: "README.md",
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Sections: []*DiffSection{
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{
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Lines: []*DiffLine{
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{
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LeftIdx: 4,
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RightIdx: 4,
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},
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},
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},
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},
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},
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},
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}
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}
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func TestDiff_LoadComments(t *testing.T) {
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assert.NoError(t, models.PrepareTestDatabase())
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issue := models.AssertExistsAndLoadBean(t, &models.Issue{ID: 2}).(*models.Issue)
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user := models.AssertExistsAndLoadBean(t, &models.User{ID: 1}).(*models.User)
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diff := setupDefaultDiff()
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assert.NoError(t, diff.LoadComments(issue, user))
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assert.Len(t, diff.Files[0].Sections[0].Lines[0].Comments, 2)
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}
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func TestDiffLine_CanComment(t *testing.T) {
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assert.False(t, (&DiffLine{Type: DiffLineSection}).CanComment())
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assert.False(t, (&DiffLine{Type: DiffLineAdd, Comments: []*models.Comment{{Content: "bla"}}}).CanComment())
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assert.True(t, (&DiffLine{Type: DiffLineAdd}).CanComment())
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assert.True(t, (&DiffLine{Type: DiffLineDel}).CanComment())
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assert.True(t, (&DiffLine{Type: DiffLinePlain}).CanComment())
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}
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func TestDiffLine_GetCommentSide(t *testing.T) {
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assert.Equal(t, "previous", (&DiffLine{Comments: []*models.Comment{{Line: -3}}}).GetCommentSide())
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assert.Equal(t, "proposed", (&DiffLine{Comments: []*models.Comment{{Line: 3}}}).GetCommentSide())
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}
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func TestGetDiffRangeWithWhitespaceBehavior(t *testing.T) {
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git.Debug = true
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for _, behavior := range []string{"-w", "--ignore-space-at-eol", "-b", ""} {
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diffs, err := GetDiffRangeWithWhitespaceBehavior("./testdata/academic-module", "559c156f8e0178b71cb44355428f24001b08fc68", "bd7063cc7c04689c4d082183d32a604ed27a24f9",
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setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffFiles, behavior)
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assert.NoError(t, err, fmt.Sprintf("Error when diff with %s", behavior))
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for _, f := range diffs.Files {
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assert.True(t, len(f.Sections) > 0, fmt.Sprintf("%s should have sections", f.Name))
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}
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}
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}
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