Mihaela Mihaljevic
61ab8ce8f9
An unrecognized XSLT element instantiates its xsl:fallback children in its place, or is dropped when it has none; a fallback under a supported instruction is ignored. The fallback content is handled in the instantiate loop alongside variables, so the evaluate dispatch stays within budget.
45 lines
1.7 KiB
Swift
45 lines
1.7 KiB
Swift
@testable import PureXML
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import Testing
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@Suite("XSLT xsl:fallback")
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struct XSLTFallbackTests {
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private let xsl = "xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\""
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private func transform(_ stylesheet: String, _ source: String) throws -> String {
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try PureXML.XSLT.transform(stylesheet: stylesheet, source: source)
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}
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private func wrap(_ templateBody: String) -> String {
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"""
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<xsl:stylesheet version="1.0" \(xsl)>
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<xsl:output method="xml" omit-xml-declaration="yes"/>
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<xsl:template match="/"><out>\(templateBody)</out></xsl:template>
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</xsl:stylesheet>
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"""
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}
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@Test("An unknown XSLT element instantiates its xsl:fallback")
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func test_unknownWithFallback() throws {
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let style = wrap("<xsl:future-thing><xsl:fallback>fb</xsl:fallback></xsl:future-thing>")
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#expect(try transform(style, "<x/>") == "<out>fb</out>")
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}
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@Test("An unknown XSLT element with no fallback is dropped")
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func test_unknownNoFallback() throws {
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let style = wrap("<xsl:future-thing/>kept")
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#expect(try transform(style, "<x/>") == "<out>kept</out>")
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}
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@Test("xsl:fallback under a supported instruction is ignored")
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func test_fallbackUnderSupported() throws {
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let style = wrap("<xsl:fallback>ignored</xsl:fallback>kept")
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#expect(try transform(style, "<x/>") == "<out>kept</out>")
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}
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@Test("Fallback content may itself be an instruction sequence")
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func test_fallbackSequence() throws {
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let style = wrap("<xsl:future-thing><xsl:fallback><a/><xsl:value-of select=\"r/@v\"/></xsl:fallback></xsl:future-thing>")
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#expect(try transform(style, "<r v=\"7\"/>") == "<out><a/>7</out>")
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}
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}
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