Mihaela Mihaljevic
8bb7568f6e
XSD cos-ct-restricts restriction mixedness is one-directional: a restriction may keep mixedness or narrow mixed to element-only, but must not add mixed content to an element-only base. The two #184 targets are already rejected (ctZ010d by extensionMixedAgreementErrors, ctZ010e by ParticleRestriction's mixed-vs-element-only case) and the four guard schemas already compile, so no behavior change is needed. This adds the isolated regression pin the restriction half lacked, guarding against a bidirectional "derived mixed must equal base mixed" rule, which regressed four valid schemas when last tried.
56 lines
2.5 KiB
Swift
56 lines
2.5 KiB
Swift
import Testing
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@testable import PureXML
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/// XSD 1.0 `cos-ct-restricts`: complexContent restriction mixedness is
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/// one-directional. A restriction may keep mixedness or narrow mixed to
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/// element-only, but must not add mixed content to an element-only base. This pins
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/// the asymmetry the #184 guard schemas (addB064, addB150, ctZ010h, particlesL012)
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/// depend on: a bidirectional "derived mixed must equal base mixed" rule would
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/// wrongly reject the legal narrowing direction (it regressed four valid schemas
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/// when tried). The targets ctZ010d (extension) and ctZ010e (restriction) are
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/// already rejected by `extensionMixedAgreementErrors` and `ParticleRestriction`
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/// respectively; this guards the restriction half from regressing.
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@Suite("XSD restriction mixed-content asymmetry (#184)")
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struct SchemaRestrictionMixedTests {
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private func document(baseMixed: Bool, derivedMixed: Bool?) -> String {
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let baseAttr = baseMixed ? " mixed=\"true\"" : ""
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let derivedAttr = derivedMixed.map { " mixed=\"\($0)\"" } ?? ""
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return """
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<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
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<xs:complexType name="base"\(baseAttr)>
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<xs:sequence><xs:element name="bar" type="xs:string"/></xs:sequence>
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</xs:complexType>
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<xs:complexType name="der"\(derivedAttr)>
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<xs:complexContent>
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<xs:restriction base="base">
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<xs:sequence><xs:element name="bar" type="xs:string"/></xs:sequence>
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</xs:restriction>
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</xs:complexContent>
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</xs:complexType>
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<xs:element name="e" type="der"/>
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</xs:schema>
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"""
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}
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private func compiles(baseMixed: Bool, derivedMixed: Bool?) -> Bool {
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(try? PureXML.Schema.Document(document(baseMixed: baseMixed, derivedMixed: derivedMixed))) != nil
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}
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@Test("ctZ010e: a mixed restriction of an element-only base adds mixedness and is rejected")
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func test_addingMixedRejected() {
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#expect(!compiles(baseMixed: false, derivedMixed: true))
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}
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@Test("ctZ010h: a non-mixed or omitted restriction of a mixed base narrows mixedness and is valid")
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func test_narrowingMixedValid() {
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#expect(compiles(baseMixed: true, derivedMixed: false))
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#expect(compiles(baseMixed: true, derivedMixed: nil))
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}
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@Test("Keeping the base mixedness in either state is valid")
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func test_keepingMixedValid() {
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#expect(compiles(baseMixed: true, derivedMixed: true))
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#expect(compiles(baseMixed: false, derivedMixed: false))
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}
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}
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