69 lines
2.8 KiB
Swift
69 lines
2.8 KiB
Swift
@testable import PureXML
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import Testing
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@Suite("HTML5 foreign content (SVG/MathML namespaces)")
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struct HTMLForeignContentTests {
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private let svg = "http://www.w3.org/2000/svg"
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private let mathml = "http://www.w3.org/1998/Math/MathML"
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/// The first element with the given local name in the parsed document.
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private func find(_ name: String, in html: String) -> PureXML.Model.Element? {
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find(name, in: PureXML.HTML.parseDocument(html))
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}
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private func find(_ name: String, in node: PureXML.Model.Node) -> PureXML.Model.Element? {
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switch node {
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case let .document(children):
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return children.lazy.compactMap { find(name, in: $0) }.first
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case let .element(element):
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if element.name.localName == name { return element }
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return element.children.lazy.compactMap { find(name, in: $0) }.first
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default:
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return nil
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}
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}
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@Test("An svg element and its descendants carry the SVG namespace")
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func test_svgNamespace() {
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let html = "<p><svg><g><rect></rect></g></svg></p>"
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#expect(find("svg", in: html)?.name.namespaceURI == svg)
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#expect(find("g", in: html)?.name.namespaceURI == svg)
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#expect(find("rect", in: html)?.name.namespaceURI == svg)
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}
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@Test("A math element and its descendants carry the MathML namespace")
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func test_mathmlNamespace() {
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let html = "<math><mi>x</mi></math>"
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#expect(find("math", in: html)?.name.namespaceURI == mathml)
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#expect(find("mi", in: html)?.name.namespaceURI == mathml)
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}
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@Test("Ordinary HTML elements have no namespace")
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func test_htmlNoNamespace() {
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#expect(find("p", in: "<p>text</p>")?.name.namespaceURI == nil)
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}
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@Test("HTML content after a closed svg is back in no namespace")
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func test_namespaceResumes() {
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let html = "<svg><rect></rect></svg><p>after</p>"
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#expect(find("rect", in: html)?.name.namespaceURI == svg)
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#expect(find("p", in: html)?.name.namespaceURI == nil)
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}
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@Test("SVG element names are restored to their canonical camel case")
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func test_svgNameCaseAdjustment() {
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let html = "<svg><foreignObject></foreignObject><lineargradient></lineargradient></svg>"
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#expect(find("foreignObject", in: html)?.name.namespaceURI == svg)
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#expect(find("linearGradient", in: html)?.name.namespaceURI == svg)
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// The lowercased forms the tokenizer produced are not what landed in the tree.
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#expect(find("foreignobject", in: html) == nil)
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}
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@Test("A same-named HTML element keeps its lowercased name")
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func test_htmlNameNotAdjusted() {
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// Outside SVG, no case adjustment applies.
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#expect(find("clippath", in: "<clippath></clippath>")?.name.namespaceURI == nil)
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#expect(find("clipPath", in: "<clippath></clippath>") == nil)
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}
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}
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