Mihaela Mihaljevic
cbeea0e3c2
Every QName a schema names must resolve to a declared component or a built-in: type/base/itemType/memberTypes to a type, element/attribute/group/attributeGroup ref to the matching global component, and element substitutionGroup to a global element. An undeclared reference was previously accepted at compile time and only surfaced lazily during instance validation, if at all. References are matched by local name, with the value trimmed (a QName attribute is whiteSpace=collapse). The whole check is skipped when the document declares an import/include/redefine, since the default compile does not load externals and the pools would be incomplete; that guard is gated on the XSD namespace so a foreign element named "import" does not trip it. XSTS: invalid schemas accepted 1092 to 1051 (-41); valid schemas rejected held at 72 (an interim version regressed one valid schema on a whitespace-padded base=" xs:string ", fixed by trimming); instance buckets unchanged.
57 lines
2.6 KiB
Swift
57 lines
2.6 KiB
Swift
@testable import PureXML
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import Testing
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/// Every QName a schema names (a `type`/`base`/`itemType`/`memberTypes` type, an
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/// element/attribute/group/attributeGroup `ref`, an element `substitutionGroup`)
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/// must resolve to a declared component or a built-in. An undeclared reference
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/// was previously accepted at compile time and only surfaced (if at all) lazily
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/// during instance validation. The check is skipped when the document pulls in
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/// external definitions through `import`/`include`/`redefine`, which the default
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/// compile does not load.
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@Suite("Schema reference resolution")
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struct SchemaReferenceTests {
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private func compile(_ body: String) throws {
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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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\(body)
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</xs:schema>
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""")
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}
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private func rejects(_ body: String) -> Bool {
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do { try compile(body)
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return false
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} catch { return true }
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}
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@Test("a reference to a declared component or a built-in resolves")
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func test_resolves() throws {
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try compile(#"<xs:element name="a" type="xs:string"/>"#)
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try compile(#"<xs:simpleType name="t"><xs:restriction base="xs:integer"/></xs:simpleType><xs:element name="a" type="t"/>"#)
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try compile(#"<xs:element name="g" type="xs:string"/><xs:complexType name="c"><xs:sequence><xs:element ref="g"/></xs:sequence></xs:complexType>"#)
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}
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@Test("an undeclared reference is rejected")
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func test_undeclared() {
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#expect(rejects(#"<xs:element name="a" type="DoesNotExist"/>"#))
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#expect(rejects(#"<xs:simpleType name="t"><xs:restriction base="Missing"/></xs:simpleType>"#))
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#expect(rejects(#"<xs:complexType name="c"><xs:sequence><xs:element ref="ghost"/></xs:sequence></xs:complexType>"#))
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#expect(rejects(#"<xs:complexType name="c"><xs:group ref="noGroup"/></xs:complexType>"#))
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}
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@Test("a reference value tolerates surrounding whitespace (whiteSpace collapse)")
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func test_whitespacePadded() throws {
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try compile("<xs:simpleType name=\"t\"><xs:restriction base=\" xs:string \"/></xs:simpleType>")
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}
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@Test("references are not checked when an import may supply them")
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func test_importSkipsCheck() throws {
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// A dangling reference into an imported namespace is tolerated: the default
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// compile does not load the import, so the reference cannot be verified.
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try compile(#"""
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<xs:import namespace="urn:other"/>
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<xs:element name="a" type="other:Foo" xmlns:other="urn:other"/>
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"""#)
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}
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}
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