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- // Copyright 2022 The Gitea Authors. All rights reserved.
- // SPDX-License-Identifier: MIT
-
- 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>`
- 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>`
- 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="nx">a</span><span class="o">=</span><span class="s1">'</span><span class="removed-code">%s</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)
- }
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