Mihaela Mihaljevic
91894d5759
XSD 1.0 §3.4.6 (cvc-complex-type) allows an element at most one attribute whose type is xs:ID. A complex type that DECLARES two ID-typed attribute uses is already a compile-time schema error, but two ID-typed attributes can also reach an element through an xs:anyAttribute wildcard that admits two ID-typed global attributes (attZ014), which was accepted. validateAttributes now counts the present attributes whose effective type is xs:ID, taking the type from the declared use an attribute matches or the global declaration a matching wildcard admits (so a restriction of xs:ID counts), and reports an error when more than one is present. xs:IDREF/xs:ENTITY and a single ID attribute are unaffected, and a valid instance never carries two, so the check cannot over-reject. invalid-instances-accepted 45 to 43, no false positive (valid-instances-rejected and valid-schemas-rejected held at 0), no other bucket moved.
40 lines
1.9 KiB
Swift
40 lines
1.9 KiB
Swift
@testable import PureXML
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import Testing
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/// An element may carry at most one attribute whose type is `xs:ID` (XSD 1.0
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/// §3.4.6, cvc-complex-type). Two ID-typed attributes on one element, whether
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/// declared or admitted through an attribute wildcard, are invalid; one is fine.
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@Suite("at most one ID attribute per element")
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struct SchemaTwoIDAttributesTests {
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/// The W3C attZ014 shape: the two ID-typed attributes are not declared on the
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/// type (which would already be a schema error) but enter the instance through
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/// an `anyAttribute` wildcard that admits two ID-typed global attributes, one
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/// of them a restriction of `xs:ID`.
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@Test("two ID-typed attributes admitted via a wildcard are rejected")
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func test_twoWildcardIDsRejected() throws {
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let schema = try PureXML.Schema.Document("""
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<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
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<xs:simpleType name="idSub"><xs:restriction base="xs:ID"/></xs:simpleType>
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<xs:attribute name="a" type="xs:ID"/>
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<xs:attribute name="b" type="idSub"/>
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<xs:element name="e"><xs:complexType><xs:anyAttribute processContents="strict"/></xs:complexType></xs:element>
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</xs:schema>
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""")
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#expect(try !schema.validate(#"<e a="i1" b="i2"/>"#).isEmpty)
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}
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@Test("a single ID attribute plus non-ID attributes is accepted")
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func test_singleIDAccepted() throws {
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let schema = try PureXML.Schema.Document("""
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<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
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<xs:element name="e"><xs:complexType>
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<xs:attribute name="id" type="xs:ID"/>
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<xs:attribute name="ref" type="xs:IDREF"/>
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<xs:attribute name="s" type="xs:string"/>
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</xs:complexType></xs:element>
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</xs:schema>
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""")
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#expect(try schema.validate(#"<e id="i1" ref="i1" s="x"/>"#).isEmpty)
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}
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}
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