mirror of
https://github.com/go-gitea/gitea
synced 2024-11-05 01:34:25 +00:00
3310dd1d19
Use Unicode placeholders to replace HTML tags and HTML entities first, then do diff, then recover the HTML tags and HTML entities. Now the code diff with highlight has stable behavior, and won't emit broken tags.
127 lines
3.8 KiB
Go
127 lines
3.8 KiB
Go
// Copyright 2022 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"
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/sergi/go-diff/diffmatchpatch"
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
func TestDiffWithHighlight(t *testing.T) {
|
|
hcd := newHighlightCodeDiff()
|
|
diffs := hcd.diffWithHighlight(
|
|
"main.v", "",
|
|
" run('<>')\n",
|
|
" run(db)\n",
|
|
)
|
|
|
|
expected := ` <span class="n">run</span><span class="o">(</span><span class="removed-code"><span class="k">'</span><span class="o"><</span><span class="o">></span><span class="k">'</span></span><span class="o">)</span>` + "\n"
|
|
output := diffToHTML(nil, diffs, DiffLineDel)
|
|
assert.Equal(t, expected, output)
|
|
|
|
expected = ` <span class="n">run</span><span class="o">(</span><span class="added-code"><span class="n">db</span></span><span class="o">)</span>` + "\n"
|
|
output = diffToHTML(nil, diffs, DiffLineAdd)
|
|
assert.Equal(t, expected, output)
|
|
|
|
hcd = newHighlightCodeDiff()
|
|
hcd.placeholderTokenMap['O'] = "<span>"
|
|
hcd.placeholderTokenMap['C'] = "</span>"
|
|
diff := diffmatchpatch.Diff{}
|
|
|
|
diff.Text = "OC"
|
|
hcd.recoverOneDiff(&diff)
|
|
assert.Equal(t, "<span></span>", diff.Text)
|
|
|
|
diff.Text = "O"
|
|
hcd.recoverOneDiff(&diff)
|
|
assert.Equal(t, "<span></span>", diff.Text)
|
|
|
|
diff.Text = "C"
|
|
hcd.recoverOneDiff(&diff)
|
|
assert.Equal(t, "", diff.Text)
|
|
}
|
|
|
|
func TestDiffWithHighlightPlaceholder(t *testing.T) {
|
|
hcd := newHighlightCodeDiff()
|
|
diffs := hcd.diffWithHighlight(
|
|
"main.js", "",
|
|
"a='\U00100000'",
|
|
"a='\U0010FFFD''",
|
|
)
|
|
assert.Equal(t, "", hcd.placeholderTokenMap[0x00100000])
|
|
assert.Equal(t, "", hcd.placeholderTokenMap[0x0010FFFD])
|
|
|
|
expected := fmt.Sprintf(`<span class="line"><span class="cl"><span class="nx">a</span><span class="o">=</span><span class="s1">'</span><span class="removed-code">%s</span>'</span></span>`, "\U00100000")
|
|
output := diffToHTML(hcd.lineWrapperTags, diffs, DiffLineDel)
|
|
assert.Equal(t, expected, output)
|
|
|
|
hcd = newHighlightCodeDiff()
|
|
diffs = hcd.diffWithHighlight(
|
|
"main.js", "",
|
|
"a='\U00100000'",
|
|
"a='\U0010FFFD'",
|
|
)
|
|
expected = fmt.Sprintf(`<span class="nx">a</span><span class="o">=</span><span class="s1">'</span><span class="added-code">%s</span>'`, "\U0010FFFD")
|
|
output = diffToHTML(nil, diffs, DiffLineAdd)
|
|
assert.Equal(t, expected, output)
|
|
}
|
|
|
|
func TestDiffWithHighlightPlaceholderExhausted(t *testing.T) {
|
|
hcd := newHighlightCodeDiff()
|
|
hcd.placeholderMaxCount = 0
|
|
diffs := hcd.diffWithHighlight(
|
|
"main.js", "",
|
|
"'",
|
|
``,
|
|
)
|
|
output := diffToHTML(nil, diffs, DiffLineDel)
|
|
expected := fmt.Sprintf(`<span class="removed-code">%s#39;</span>`, "\uFFFD")
|
|
assert.Equal(t, expected, output)
|
|
|
|
hcd = newHighlightCodeDiff()
|
|
hcd.placeholderMaxCount = 0
|
|
diffs = hcd.diffWithHighlight(
|
|
"main.js", "",
|
|
"a < b",
|
|
"a > b",
|
|
)
|
|
output = diffToHTML(nil, diffs, DiffLineDel)
|
|
expected = fmt.Sprintf(`a %s<span class="removed-code">l</span>t; b`, "\uFFFD")
|
|
assert.Equal(t, expected, output)
|
|
|
|
output = diffToHTML(nil, diffs, DiffLineAdd)
|
|
expected = fmt.Sprintf(`a %s<span class="added-code">g</span>t; b`, "\uFFFD")
|
|
assert.Equal(t, expected, output)
|
|
}
|
|
|
|
func TestDiffWithHighlightTagMatch(t *testing.T) {
|
|
totalOverflow := 0
|
|
for i := 0; i < 100; i++ {
|
|
hcd := newHighlightCodeDiff()
|
|
hcd.placeholderMaxCount = i
|
|
diffs := hcd.diffWithHighlight(
|
|
"main.js", "",
|
|
"a='1'",
|
|
"b='2'",
|
|
)
|
|
totalOverflow += hcd.placeholderOverflowCount
|
|
|
|
output := diffToHTML(nil, diffs, DiffLineDel)
|
|
c1 := strings.Count(output, "<span")
|
|
c2 := strings.Count(output, "</span")
|
|
assert.Equal(t, c1, c2)
|
|
|
|
output = diffToHTML(nil, diffs, DiffLineAdd)
|
|
c1 = strings.Count(output, "<span")
|
|
c2 = strings.Count(output, "</span")
|
|
assert.Equal(t, c1, c2)
|
|
}
|
|
assert.NotZero(t, totalOverflow)
|
|
}
|