Mihaela Mihaljevic
ee676cb470
XSD 1.0 cos-particle-restrict NameAndTypeOK.2.2: when a complexContent restriction narrows an element, the element's type must be validly derived from the base element's type EXCLUDING extension (and list/union), i.e. by restriction only. The element-type check followed the derivation chain regardless of method, so a type derived from the base by extension was wrongly accepted as a valid restriction (corpus particlesIj008). Add typeDerivesByRestriction (as typeDerivesOrEqual, but the user-declared chain is followed across restriction steps only; an extension step breaks the walk) and use it on the non-union fall-through of elementTypeRestrictionOK. The shared typeDerivesOrEqual is untouched, so substitution-group validity (where extension is legal) is unaffected. Built-in lattice and union-base derivation are unchanged, so valid restrictions, including the union-member restriction addB150, still compile. XSTS invalid-schemas-accepted 37 -> 36; valid-schemas-rejected held at 0 across all 14383 groups. Union-base (Ik011/Ik025/Ik027) and substitution-group (V020) cases need the by-name union-member and ref-resolution clauses and stay deferred.
45 lines
2.2 KiB
Swift
45 lines
2.2 KiB
Swift
import Testing
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@testable import PureXML
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/// XSD 1.0 cos-particle-restrict NameAndTypeOK.2.2 (#158): when a complexContent
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/// restriction narrows an element, the element's type must be validly derived from
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/// the base element's type EXCLUDING extension (by restriction only). A type derived
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/// from the base type by extension is not a valid restriction (corpus particlesIj008).
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@Suite("XSD NameAndTypeOK restriction-only type derivation (#158)")
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struct SchemaParticleTypeRestrictionTests {
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private func compiles(_ derivedC1Type: String) -> Bool {
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let schema = """
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<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
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<xs:complexType name="foo"><xs:sequence><xs:element name="a" type="xs:string"/></xs:sequence></xs:complexType>
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<xs:complexType name="barExt">
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<xs:complexContent><xs:extension base="foo"><xs:sequence><xs:element name="b" type="xs:string"/></xs:sequence></xs:extension></xs:complexContent>
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</xs:complexType>
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<xs:complexType name="barRes">
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<xs:complexContent><xs:restriction base="foo"><xs:sequence><xs:element name="a" type="xs:string"/></xs:sequence></xs:restriction></xs:complexContent>
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</xs:complexType>
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<xs:complexType name="B"><xs:sequence><xs:element name="c1" type="foo"/></xs:sequence></xs:complexType>
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<xs:complexType name="R">
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<xs:complexContent><xs:restriction base="B"><xs:sequence><xs:element name="c1" type="\(derivedC1Type)"/></xs:sequence></xs:restriction></xs:complexContent>
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</xs:complexType>
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<xs:element name="doc" type="R"/>
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</xs:schema>
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"""
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return (try? PureXML.Schema.Document(schema)) != nil
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}
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@Test("restricting an element to a type derived by EXTENSION is rejected (particlesIj008)")
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func test_extensionDerivedTypeRejected() {
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#expect(!compiles("barExt"))
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}
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@Test("restricting an element to a type derived by RESTRICTION is accepted")
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func test_restrictionDerivedTypeAccepted() {
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#expect(compiles("barRes"))
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}
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@Test("restricting an element to the same type is accepted")
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func test_sameTypeAccepted() {
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#expect(compiles("foo"))
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}
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}
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