PureXML/Tests/RelaxNGDatatypeLibraryTests.swift
Mihaela Mihaljevic 147d776d21 feat(relaxng): resolve datatypeLibrary and nsName subtraction
Adds a datatypeLibrary-aware datatype resolver to the XML-syntax parser:
the in-scope library is inherited from the nearest ancestor, the default
(empty) library defines only string and token, and the W3C XML Schema
library defines the full built-in set. A type the in-scope library does
not define is an unknown datatype, so the <data>/<value> pattern matches
nothing rather than silently validating.

Adds an nsNameExcept name-class case so nsName with an <except> child
(XML syntax) and prefix:* - name subtraction (compact syntax) narrow a
namespace wildcard. The compact lexer splits prefix:* into a trailing-
colon word plus a star symbol, which the parser now recognizes.

Existing RELAX NG facet tests declared XSD types without the library and
relied on lenient resolution; they now declare the XSD datatypeLibrary,
matching what a conformant processor requires.
2026-06-08 17:21:49 +02:00

111 lines
4.0 KiB
Swift

@testable import PureXML
import Testing
@Suite("RELAX NG datatypeLibrary resolution and nsName subtraction")
struct RelaxNGDatatypeLibraryTests {
private let xsd = "http://www.w3.org/2001/XMLSchema-datatypes"
private func validXML(_ rng: String, _ xml: String) throws -> Bool {
try PureXML.Schema.RelaxNG(rng).validate(xml)
}
private func validRNC(_ rnc: String, _ xml: String) throws -> Bool {
try PureXML.Schema.RelaxNG(compact: rnc).validate(xml)
}
@Test("The default library defines only string and token")
func test_defaultLibraryStringToken() throws {
let rng = """
<element name="v" xmlns="http://relaxng.org/ns/structure/1.0">
<data type="token"/>
</element>
"""
#expect(try validXML(rng, "<v>anything here</v>"))
}
@Test("An XSD type without the XSD library is an unknown datatype and matches nothing")
func test_unknownTypeInDefaultLibrary() throws {
let rng = """
<element name="n" xmlns="http://relaxng.org/ns/structure/1.0">
<data type="integer"/>
</element>
"""
// `integer` is not in the default library, so no value validates.
#expect(try !validXML(rng, "<n>5</n>"))
#expect(try !validXML(rng, "<n>x</n>"))
}
@Test("Declaring the XSD datatypeLibrary makes xsd types resolve")
func test_xsdLibraryResolves() throws {
let rng = """
<element name="n" datatypeLibrary="\(xsd)" xmlns="http://relaxng.org/ns/structure/1.0">
<data type="integer"/>
</element>
"""
#expect(try validXML(rng, "<n>5</n>"))
#expect(try !validXML(rng, "<n>x</n>"))
}
@Test("datatypeLibrary is inherited from an ancestor element")
func test_libraryInheritedFromAncestor() throws {
let rng = """
<grammar datatypeLibrary="\(xsd)" xmlns="http://relaxng.org/ns/structure/1.0">
<start>
<element name="n"><data type="integer"/></element>
</start>
</grammar>
"""
#expect(try validXML(rng, "<n>42</n>"))
#expect(try !validXML(rng, "<n>4.2</n>"))
}
@Test("A value with an unknown explicit type matches nothing")
func test_valueUnknownType() throws {
let rng = """
<element name="n" xmlns="http://relaxng.org/ns/structure/1.0">
<value type="integer">5</value>
</element>
"""
#expect(try !validXML(rng, "<n>5</n>"))
}
@Test("nsName with except excludes a name in the namespace")
func test_nsNameExceptXML() throws {
let rng = """
<element name="root" xmlns="http://relaxng.org/ns/structure/1.0">
<element>
<nsName ns="urn:x"><except><name ns="urn:x">skip</name></except></nsName>
<empty/>
</element>
</element>
"""
// Any element in urn:x except local name "skip" is allowed.
let allowed = "<root xmlns:p=\"urn:x\"><p:keep/></root>"
let excluded = "<root xmlns:p=\"urn:x\"><p:skip/></root>"
let wrongNS = "<root xmlns:p=\"urn:y\"><p:keep/></root>"
#expect(try validXML(rng, allowed))
#expect(try !validXML(rng, excluded))
#expect(try !validXML(rng, wrongNS))
}
@Test("RNC ns:* wildcard matches any name in the namespace")
func test_rncNsWildcard() throws {
let rnc = """
namespace p = "urn:x"
element root { element p:* { empty } }
"""
#expect(try validRNC(rnc, "<root xmlns:p=\"urn:x\"><p:anything/></root>"))
#expect(try !validRNC(rnc, "<root xmlns:q=\"urn:y\"><q:anything/></root>"))
}
@Test("RNC ns:* - name subtracts a name from the namespace wildcard")
func test_rncNsWildcardExcept() throws {
let rnc = """
namespace p = "urn:x"
element root { element p:* - p:skip { empty } }
"""
#expect(try validRNC(rnc, "<root xmlns:p=\"urn:x\"><p:keep/></root>"))
#expect(try !validRNC(rnc, "<root xmlns:p=\"urn:x\"><p:skip/></root>"))
}
}