Mihaela Mihaljevic
067aa91861
The fragment TreeBuilder gains the HTML5 active-formatting-list and reconstruct step that the document builder already had: when a formatting element (b, i, em, ...) is closed out of order, it is remembered and re-opened for the following content. So HTML.parse now agrees with HTML.parseDocument and the spec, e.g. <b><i></b>X</i> -> <b><i></i></b><i>X</i> and <p>1<b>2<i>3</b>4</i>5</p> -> <p>1<b>2<i>3</i></b><i>4</i>5</p>. The conformance corpus that surfaced this now checks the fragment path directly. Closes #109
53 lines
2.2 KiB
Swift
53 lines
2.2 KiB
Swift
@testable import PureXML
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import Testing
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@Suite("HTML5 adoption agency (misnested formatting elements)")
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struct HTMLAdoptionTests {
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private func body(_ html: String) -> String {
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let full = PureXML.HTML.serialize(PureXML.HTML.parseDocument(html))
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let wrapper = "<html><head></head><body>"
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guard full.hasPrefix(wrapper), full.hasSuffix("</body></html>") else { return full }
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return String(full.dropFirst(wrapper.count).dropLast("</body></html>".count))
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}
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@Test("Overlapping formatting tags are nested")
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func test_overlapping() {
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#expect(body("<b><i></b></i>") == "<b><i></i></b>")
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}
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@Test("Content after a misnested close is re-wrapped (reconstruction)")
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func test_reconstruction() {
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#expect(body("<b><i></b>X</i>") == "<b><i></i></b><i>X</i>")
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}
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@Test("The fragment parser also reconstructs active formatting elements (#109)")
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func test_fragmentReconstruction() {
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// HTML.parse (fragment) now agrees with the document parser on
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// active-formatting reconstruction, not just the simple overlap case.
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#expect(PureXML.HTML.serialize(PureXML.HTML.parse("<b><i></b>X</i>")) == "<b><i></i></b><i>X</i>")
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#expect(PureXML.HTML.serialize(PureXML.HTML.parse("<p>1<b>2<i>3</b>4</i>5</p>")) == "<p>1<b>2<i>3</i></b><i>4</i>5</p>")
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}
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@Test("A block inside a formatting element triggers the furthest-block path")
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func test_furthestBlock() {
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#expect(body("<b>1<p>2</b>3</p>") == "<b>1</b><p><b>2</b>3</p>")
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}
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@Test("Nested anchors and formatting close cleanly")
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func test_nestedFormatting() {
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#expect(body("<a><b></a>") == "<a><b></b></a>")
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}
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@Test("The canonical adoption-agency example reparents correctly")
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func test_canonicalExample() {
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// The well-known html5lib case for the adoption agency algorithm.
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#expect(body("<p>1<b>2<i>3</b>4</i>5</p>") == "<p>1<b>2<i>3</i></b><i>4</i>5</p>")
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}
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@Test("Well-nested formatting is unchanged")
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func test_wellNested() {
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#expect(body("<b><i>x</i></b>") == "<b><i>x</i></b>")
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#expect(body("<p><b>bold</b> and <i>italic</i></p>") == "<p><b>bold</b> and <i>italic</i></p>")
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}
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}
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