Mihaela Mihaljevic
10d9525e3e
Whitespace-only text nodes are removed from the source tree for elements named by strip-space before transformation, with preserve-space and a more specific name test winning over *, and xml:space=preserve on a source element or ancestor overriding the stripping. The name sets fold across xsl:include/xsl:import. Refactors the stylesheet compile loop through a Parts accumulator to absorb the new top-level elements within the complexity budget.
68 lines
2.7 KiB
Swift
68 lines
2.7 KiB
Swift
@testable import PureXML
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import Testing
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@Suite("XSLT strip-space / preserve-space")
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struct XSLTWhitespaceTests {
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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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@Test("strip-space removes whitespace-only text nodes; a copy reflects it")
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func test_stripSpace() throws {
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let style = """
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<xsl:stylesheet version="1.0" \(xsl)>
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<xsl:strip-space elements="a"/>
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<xsl:output method="xml" omit-xml-declaration="yes"/>
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<xsl:template match="/"><xsl:copy-of select="a"/></xsl:template>
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</xsl:stylesheet>
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"""
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let source = "<a>\n <b/>\n <b/>\n</a>"
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// The indentation whitespace between <b/> elements is stripped.
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#expect(try transform(style, source) == "<a><b/><b/></a>")
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}
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@Test("Without strip-space the whitespace is preserved")
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func test_noStrip() throws {
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let style = """
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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="/"><xsl:copy-of select="a"/></xsl:template>
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</xsl:stylesheet>
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"""
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let source = "<a>\n <b/>\n</a>"
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#expect(try transform(style, source).contains("\n "))
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}
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@Test("preserve-space overrides strip-space for a named element")
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func test_preserveOverrides() throws {
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let style = """
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<xsl:stylesheet version="1.0" \(xsl)>
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<xsl:strip-space elements="*"/>
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<xsl:preserve-space elements="keep"/>
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<xsl:output method="xml" omit-xml-declaration="yes"/>
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<xsl:template match="/"><xsl:copy-of select="*"/></xsl:template>
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</xsl:stylesheet>
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"""
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// strip-space="*" strips <drop>'s whitespace, but <keep> preserves its own.
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let stripped = try transform(style, "<drop>\n <x/>\n</drop>")
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#expect(stripped == "<drop><x/></drop>")
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let kept = try transform(style, "<keep>\n <x/>\n</keep>")
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#expect(kept.contains("\n "))
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}
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@Test("xml:space=preserve on a source element keeps its whitespace despite strip-space")
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func test_xmlSpacePreserve() throws {
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let style = """
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<xsl:stylesheet version="1.0" \(xsl)>
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<xsl:strip-space elements="a"/>
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<xsl:output method="xml" omit-xml-declaration="yes"/>
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<xsl:template match="/"><xsl:copy-of select="a"/></xsl:template>
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</xsl:stylesheet>
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"""
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let source = "<a xml:space=\"preserve\">\n <b/>\n</a>"
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#expect(try transform(style, source).contains("\n "))
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}
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}
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