0e739c882e
ConvertContentH1 rewrites content only when it is HTML; a markdown source, its code samples included, is kept byte for byte and only its rendered content_html is converted, on API saves, imports, journal:fix-headings and translations. ConvertH1 and SetImageAlt keep the bytes of an unfinished tag at the end of the input.
57 lines
2.9 KiB
Go
57 lines
2.9 KiB
Go
package classes
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import "testing"
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// TestSetImageAlt pins the alt rewrite: only the matching img tag is
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// rewritten from its token, the alt is escaped, a missing alt is added and
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// every other byte is kept (T-33-04).
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func TestSetImageAlt(t *testing.T) {
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const doc = `<p class="a">x & y</p><img src="https://cdn.example.test/a.jpg?x=1&y=2"><img src="b.jpg" alt="old"/>`
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out, n, old := SetImageAlt(doc, "https://cdn.example.test/a.jpg?x=1&y=2", `Lion's "mane" <b>`)
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want := `<p class="a">x & y</p><img src="https://cdn.example.test/a.jpg?x=1&y=2" alt="Lion's "mane" <b>"><img src="b.jpg" alt="old"/>`
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if out != want || n != 1 || old != nil {
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t.Fatalf("SetImageAlt = %q, %d, %v; want %q, 1, nil", out, n, old, want)
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}
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out, n, old = SetImageAlt(doc, "b.jpg", "")
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if out != `<p class="a">x & y</p><img src="https://cdn.example.test/a.jpg?x=1&y=2"><img src="b.jpg" alt=""/>` || n != 1 || old == nil || *old != "old" {
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t.Fatalf("decorative = %q, %d, %v", out, n, old)
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}
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if out, n, _ := SetImageAlt(doc, "missing.jpg", "x"); out != doc || n != 0 {
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t.Fatalf("missing = %q, %d", out, n)
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}
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}
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// TestSetImageAltEdges pins the edges: every matching img is rewritten
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// and counted (the first one's old alt answered), repeated alt attributes
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// collapse to one, a src given escaped does not match the unescaped one,
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// an empty src and a body without img change nothing, and text that
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// looks like an img inside a comment or script is not touched.
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func TestSetImageAltEdges(t *testing.T) {
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doc := `<img src="a.jpg" alt="one"><p>t</p><img alt="x" src="a.jpg" alt="y"><!-- <img src="a.jpg"> --><script>"<img src=a.jpg>"</script>`
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out, n, old := SetImageAlt(doc, "a.jpg", "new")
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if n != 2 || old == nil || *old != "one" {
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t.Fatalf("n=%d old=%v", n, old)
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}
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want := `<img src="a.jpg" alt="new"><p>t</p><img alt="new" src="a.jpg"><!-- <img src="a.jpg"> --><script>"<img src=a.jpg>"</script>`
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if out != want {
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t.Fatalf("out = %q\nwant %q", out, want)
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}
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if out, n, _ := SetImageAlt(`<img src="a.jpg?x=1&y=2">`, "a.jpg?x=1&y=2", "z"); n != 0 || out != `<img src="a.jpg?x=1&y=2">` {
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t.Fatalf("escaped src matched: %q %d", out, n)
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}
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for _, tc := range []struct{ html, src string }{{`<img src="a.jpg">`, ""}, {`<p>no images</p>`, "a.jpg"}, {"", "a.jpg"}} {
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if out, n, old := SetImageAlt(tc.html, tc.src, "x"); out != tc.html || n != 0 || old != nil {
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t.Errorf("SetImageAlt(%q, %q) = %q %d %v", tc.html, tc.src, out, n, old)
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}
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}
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// L1 WR-03: the bytes of an unfinished tag at the end are kept.
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for _, in := range []string{"p a <img", "x<y", `<img src="b.jpg"><p>a <b`} {
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if out, n, _ := SetImageAlt(in, "a.jpg", "z"); out != in || n != 0 {
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t.Errorf("SetImageAlt(%q) = %q %d", in, out, n)
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}
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}
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if out, n, _ := SetImageAlt(`<img src="a.jpg"><p>a <b`, "a.jpg", "z"); out != `<img src="a.jpg" alt="z"><p>a <b` || n != 1 {
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t.Errorf("match with an unfinished tail = %q %d", out, n)
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}
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}
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