Mihaela Mihaljevic
3415ff3d9a
A RELAX NG schema document is validated before pattern interpretation in three layers: the section-3 grammar check (vocabulary, attributes, arity, text, QNames, datatypeLibrary URIs, hrefs, 4.16 excepts, xmlns prohibitions), compiler checks (4.17 combine rules, unresolved refs, parentRef scope, startless grammars, include/externalRef cycles and overrides, grammar-checked loaded documents, unknown datatypes, built-in-library params), and the 4.19/7.1-7.4 restrictions over the compiled algebra after 4.20/4.21 normalization (prohibited paths, content types, duplicate attributes via representative-name overlap, infinite-class attributes outside oneOrMore, interleave constraints), with recursion detection deliberately before normalization. Incorrect schemas: 213 compiling down to 7, all the pre-Fifth-Edition name-class class (count asserted). Two leniency tests updated to spec behavior. Closes #131
71 lines
3.6 KiB
Swift
71 lines
3.6 KiB
Swift
@testable import PureXML
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import Testing
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/// Schema-correctness validation (#131): a RELAX NG schema document must
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/// itself match the RELAX NG grammar (section 3) and the restrictions of
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/// 4.16-4.19 and 7.1-7.4 before any pattern interpretation.
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@Suite("RELAX NG schema correctness")
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struct RelaxNGSchemaCorrectnessTests {
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private func rejects(_ rng: String) -> Bool {
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(try? PureXML.Schema.RelaxNG(rng)) == nil
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}
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private let rngNS = "xmlns=\"http://relaxng.org/ns/structure/1.0\""
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@Test("Junk, misplaced elements, and illegal attributes are schema errors")
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func test_grammarLevel() {
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#expect(rejects("<thisIsJunk/>"))
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#expect(rejects("<grammar \(rngNS)><element name=\"foo\"><empty/></element></grammar>"))
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#expect(rejects("<element \(rngNS) name=\"foo\" bogus=\"x\"><empty/></element>"))
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#expect(rejects("<element \(rngNS) name=\"foo\"/>"))
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#expect(rejects("<ref \(rngNS)/>"))
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#expect(!rejects("<element \(rngNS) name=\"foo\"><empty/></element>"))
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}
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@Test("4.16: except restrictions and the xmlns prohibition")
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func test_section416() {
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#expect(rejects("<element \(rngNS) name=\"f\"><anyName><except><anyName/></except></anyName><empty/></element>"))
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#expect(rejects("<element \(rngNS) name=\"f\"><attribute name=\"xmlns\"><text/></attribute></element>"))
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#expect(rejects("<element \(rngNS) name=\"f\"><attribute ns=\"http://www.w3.org/2000/xmlns\" name=\"b\"><text/></attribute></element>"))
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}
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@Test("4.17/4.19: combine conflicts and unguarded recursion")
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func test_grammarSemantics() {
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let conflict = """
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<grammar \(rngNS)><start><ref name="x"/></start>
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<define name="x" combine="choice"><empty/></define>
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<define name="x" combine="interleave"><empty/></define></grammar>
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"""
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#expect(rejects(conflict))
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let recursion = """
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<grammar \(rngNS)><start><ref name="x"/></start>
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<define name="x"><optional><ref name="x"/></optional></define></grammar>
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"""
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#expect(rejects(recursion))
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#expect(rejects("<grammar \(rngNS)><start><ref name=\"missing\"/></start></grammar>"))
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}
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@Test("7.1-7.4: prohibited paths, content types, attributes, interleave")
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func test_section7() {
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#expect(rejects("<element \(rngNS) name=\"f\"><attribute name=\"a\"><attribute name=\"b\"/></attribute></element>"))
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#expect(rejects("<grammar \(rngNS)><start><attribute name=\"a\"/></start></grammar>"))
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#expect(rejects("<element \(rngNS) name=\"f\"><group><data type=\"token\"/><data type=\"token\"/></group></element>"))
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#expect(rejects("<element \(rngNS) name=\"f\"><attribute name=\"b\"/><attribute name=\"b\"/></element>"))
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#expect(rejects("<element \(rngNS) name=\"f\"><interleave><text/><text/></interleave></element>"))
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#expect(rejects("<element \(rngNS) name=\"f\"><attribute><anyName/><text/></attribute></element>"))
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// The same shapes inside a notAllowed branch are normalized away (4.20).
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let normalized = """
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<element \(rngNS) name="f"><choice><empty/><group><notAllowed/>
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<attribute name="a"><attribute name="b"/></attribute></group></choice></element>
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"""
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#expect(!rejects(normalized))
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}
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@Test("Datatype and URI checks")
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func test_datatypes() {
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#expect(rejects("<element \(rngNS) name=\"f\"><data type=\"decimal\"/></element>"))
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#expect(rejects("<element \(rngNS) name=\"f\" datatypeLibrary=\"foo_bar:x\"><empty/></element>"))
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#expect(rejects("<element \(rngNS) name=\"f\" datatypeLibrary=\"http://e.com#frag\"><empty/></element>"))
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}
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}
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