Mihaela Mihaljevic
b27b015f78
The scanner records declaration provenance (internal-subset entities, element models, attribute lists); the validator reports the three standalone='yes' dependencies on the external subset: a default that would be supplied, a non-CDATA normalization that would change a value, and whitespace in externally-declared element content. The parser hides externally-declared entities from standalone documents, so referencing one reports as undeclared (WFC: Entity Declared, 2.9). The Sun section is fully clean: not-wf 56/56, valid 28/28, invalid 74/74, no baseline. Closes #134 Closes #124
76 lines
3.6 KiB
Swift
76 lines
3.6 KiB
Swift
@testable import PureXML
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import Testing
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/// The standalone validity constraints (2.9) and the standalone entity WFC:
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/// a document declaring standalone='yes' must not depend on declarations in
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/// the external subset.
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@Suite("Standalone validity")
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struct DTDStandaloneTests {
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private let externalDTD = """
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<!ELEMENT root (child)*>
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<!ELEMENT child (#PCDATA)>
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<!ATTLIST root token (a|b|c) "a" id ID #IMPLIED>
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<!ENTITY outside "external text">
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"""
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private func resolver() -> PureXML.Parsing.EntityResolver {
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let dtd = externalDTD
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return PureXML.Parsing.EntityResolver(
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resolveEntity: { _, _ in nil },
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resolveExternalSubset: { _ in dtd },
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)
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}
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private func errors(_ xml: String) throws -> [String] {
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try PureXML.validateAgainstInternalDTD(xml, resolver: resolver()).map(\.reason)
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}
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@Test("An externally-declared default firing is a standalone violation")
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func test_externalDefault() throws {
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let xml = "<?xml version='1.0' standalone='yes'?>\n<!DOCTYPE root SYSTEM \"x.dtd\">\n<root/>"
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#expect(try errors(xml).contains { $0.contains("externally-declared default") })
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// standalone='no' is fine.
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let declared = "<?xml version='1.0' standalone='no'?>\n<!DOCTYPE root SYSTEM \"x.dtd\">\n<root/>"
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#expect(try !errors(declared).contains { $0.contains("externally-declared") })
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}
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@Test("External normalization needed is a standalone violation, supplied values are fine")
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func test_externalNormalization() throws {
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let needs = "<?xml version='1.0' standalone='yes'?>\n<!DOCTYPE root SYSTEM \"x.dtd\">\n<root token=\" b \" id=\"ok\"/>"
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#expect(try errors(needs).contains { $0.contains("externally-declared normalization") })
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let clean = "<?xml version='1.0' standalone='yes'?>\n<!DOCTYPE root SYSTEM \"x.dtd\">\n<root token=\"b\" id=\"ok\"/>"
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#expect(try !errors(clean).contains { $0.contains("normalization") })
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}
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@Test("Whitespace in externally-declared element content is a standalone violation")
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func test_externalElementWhitespace() throws {
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let xml = "<?xml version='1.0' standalone='yes'?>\n<!DOCTYPE root SYSTEM \"x.dtd\">\n<root token=\"b\" id=\"ok\">\n <child>x</child>\n</root>"
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#expect(try errors(xml).contains { $0.contains("whitespace in the externally-declared element content") })
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}
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@Test("Internally-declared attributes do not trip the standalone rules")
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func test_internalDeclarationsExempt() throws {
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let xml = """
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<?xml version='1.0' standalone='yes'?>
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<!DOCTYPE root SYSTEM "x.dtd" [
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<!ATTLIST root token (a|b|c) "a">
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]>
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<root token=" b " id="ok"/>
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"""
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// token is internally redeclared (first wins), so its default and
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// normalization are internal facts; only external facts may fire.
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#expect(try !errors(xml).contains { $0.contains("'token'") })
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}
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@Test("A standalone document may not reference an externally-declared entity")
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func test_standaloneEntityWFC() {
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let xml = "<?xml version='1.0' standalone='yes'?>\n<!DOCTYPE root SYSTEM \"x.dtd\">\n<root token=\"b\" id=\"ok\"><child>&outside;</child></root>"
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#expect(throws: PureXML.Parsing.ParseError.self) {
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_ = try PureXML.parse(xml, limits: .init(allowDoctype: true), resolver: resolver())
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}
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// Without standalone the reference resolves.
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let loose = "<!DOCTYPE root SYSTEM \"x.dtd\">\n<root token=\"b\" id=\"ok\"><child>&outside;</child></root>"
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#expect((try? PureXML.parse(loose, limits: .init(allowDoctype: true), resolver: resolver())) != nil)
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}
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}
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