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87 lines
3.5 KiB
Go
87 lines
3.5 KiB
Go
// Copyright 2022 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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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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"github.com/stretchr/testify/assert"
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)
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func TestDiffWithHighlight(t *testing.T) {
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t.Run("DiffLineAddDel", func(t *testing.T) {
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hcd := newHighlightCodeDiff()
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codeA := template.HTML(`x <span class="k">foo</span> y`)
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codeB := template.HTML(`x <span class="k">bar</span> y`)
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outDel := hcd.diffLineWithHighlight(DiffLineDel, codeA, codeB)
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assert.Equal(t, `x <span class="k"><span class="removed-code">foo</span></span> y`, string(outDel))
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outAdd := hcd.diffLineWithHighlight(DiffLineAdd, codeA, codeB)
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assert.Equal(t, `x <span class="k"><span class="added-code">bar</span></span> y`, string(outAdd))
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})
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t.Run("CleanUp", func(t *testing.T) {
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hcd := newHighlightCodeDiff()
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codeA := template.HTML(`<span class="cm>this is a comment</span>`)
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codeB := template.HTML(`<span class="cm>this is updated comment</span>`)
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outDel := hcd.diffLineWithHighlight(DiffLineDel, codeA, codeB)
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assert.Equal(t, `<span class="cm>this is <span class="removed-code">a</span> comment</span>`, string(outDel))
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outAdd := hcd.diffLineWithHighlight(DiffLineAdd, codeA, codeB)
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assert.Equal(t, `<span class="cm>this is <span class="added-code">updated</span> comment</span>`, string(outAdd))
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})
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t.Run("OpenCloseTags", func(t *testing.T) {
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hcd := newHighlightCodeDiff()
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hcd.placeholderTokenMap['O'], hcd.placeholderTokenMap['C'] = "<span>", "</span>"
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assert.Equal(t, "<span></span>", string(hcd.recoverOneDiff("OC")))
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assert.Equal(t, "<span></span>", string(hcd.recoverOneDiff("O")))
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assert.Empty(t, string(hcd.recoverOneDiff("C")))
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})
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}
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func TestDiffWithHighlightPlaceholder(t *testing.T) {
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hcd := newHighlightCodeDiff()
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output := hcd.diffLineWithHighlight(DiffLineDel, "a='\U00100000'", "a='\U0010FFFD''")
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assert.Empty(t, hcd.placeholderTokenMap[0x00100000])
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assert.Empty(t, hcd.placeholderTokenMap[0x0010FFFD])
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expected := fmt.Sprintf(`a='<span class="removed-code">%s</span>'`, "\U00100000")
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assert.Equal(t, expected, string(output))
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hcd = newHighlightCodeDiff()
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output = hcd.diffLineWithHighlight(DiffLineAdd, "a='\U00100000'", "a='\U0010FFFD'")
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expected = fmt.Sprintf(`a='<span class="added-code">%s</span>'`, "\U0010FFFD")
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assert.Equal(t, expected, string(output))
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}
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func TestDiffWithHighlightPlaceholderExhausted(t *testing.T) {
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hcd := newHighlightCodeDiff()
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hcd.placeholderMaxCount = 0
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placeHolderAmp := string(rune(0xFFFD))
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output := hcd.diffLineWithHighlight(DiffLineDel, `<span class="k"><</span>`, `<span class="k">></span>`)
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assert.Equal(t, placeHolderAmp+"lt;", string(output))
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output = hcd.diffLineWithHighlight(DiffLineAdd, `<span class="k"><</span>`, `<span class="k">></span>`)
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assert.Equal(t, placeHolderAmp+"gt;", string(output))
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}
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func TestDiffWithHighlightTagMatch(t *testing.T) {
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f := func(t *testing.T, lineType DiffLineType) {
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totalOverflow := 0
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for i := 0; ; i++ {
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hcd := newHighlightCodeDiff()
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hcd.placeholderMaxCount = i
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output := string(hcd.diffLineWithHighlight(lineType, `<span class="k"><</span>`, `<span class="k">></span>`))
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totalOverflow += hcd.placeholderOverflowCount
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assert.Equal(t, strings.Count(output, "<span"), strings.Count(output, "</span"))
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if hcd.placeholderOverflowCount == 0 {
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break
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}
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}
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assert.NotZero(t, totalOverflow)
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}
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t.Run("DiffLineAdd", func(t *testing.T) { f(t, DiffLineAdd) })
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t.Run("DiffLineDel", func(t *testing.T) { f(t, DiffLineDel) })
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}
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