Mihaela Mihaljevic
c9f41c387e
An element with a default or fixed value takes that value when it appears empty, so the empty content is valid even where the type would reject an empty string. The constraint value, not the empty string, is validated against the type, including any xsi:type override, so a fixed value invalid against the overriding type is still rejected. Validating the constraint value under xsi:type exposed a second defect: a restriction's enumeration was unioned with the inherited enumeration, so a derived type wrongly accepted the base's values. Enumeration now replaces on restriction (the new set is the value space); pattern still accumulates and is ANDed across derivation steps. XSTS: valid instances rejected 395 to 369, invalid instances accepted 240 to 238. Baseline updated; regression tests cover empty default/fixed, present content still validated, and the constraint value checked against an xsi:type. Refs #147, #129.
55 lines
2.5 KiB
Swift
55 lines
2.5 KiB
Swift
@testable import PureXML
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import Testing
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/// An element with a `default` or `fixed` value takes that value when it appears
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/// empty, so the empty content is valid even when the type would reject an empty
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/// string (#147, XSTS valueConstraint set). Present content is still validated.
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@Suite("Element default and fixed value constraints")
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struct SchemaValueConstraintTests {
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private func element(_ constraint: String) throws -> PureXML.Schema.Document {
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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="v" type="xs:decimal" \(constraint)/>
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</xs:schema>
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""")
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}
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@Test("An empty element with a default takes the default and is valid")
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func test_defaultEmptyValid() throws {
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let doc = try element(#"default="12""#)
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#expect(try doc.validate("<v/>").isEmpty) // empty: default applies
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#expect(try doc.validate("<v>7</v>").isEmpty) // present valid decimal
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#expect(try !doc.validate("<v>abc</v>").isEmpty) // present content still validated
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}
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@Test("An empty element with a fixed value is valid; present content must equal it")
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func test_fixed() throws {
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let doc = try element(#"fixed="5""#)
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#expect(try doc.validate("<v/>").isEmpty) // empty: fixed applies
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#expect(try doc.validate("<v>5</v>").isEmpty) // equals fixed
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#expect(try !doc.validate("<v>6</v>").isEmpty) // differs from fixed
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#expect(try !doc.validate("<v>x</v>").isEmpty) // not even a decimal
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}
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@Test("An empty element's value constraint must still be valid against an xsi:type override")
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func test_constraintValueValidatedAgainstXsiType() throws {
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let doc = 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="v" type="B" fixed="a"/>
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<xs:simpleType name="B">
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<xs:restriction base="xs:string">
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<xs:enumeration value="a"/><xs:enumeration value="b"/>
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</xs:restriction>
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</xs:simpleType>
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<xs:simpleType name="D">
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<xs:restriction base="B"><xs:enumeration value="b"/></xs:restriction>
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</xs:simpleType>
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</xs:schema>
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""")
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// Empty: fixed 'a' is valid against the declared type B.
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#expect(try doc.validate("<v/>").isEmpty)
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// Empty under xsi:type=D: the fixed value 'a' is not in D's enumeration, so invalid.
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#expect(try !doc.validate(#"<v xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="D"/>"#).isEmpty)
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}
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}
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