Mihaela Mihaljevic
2414dbc3bc
A prefer attribute on a <group> (or nested <catalog>) overrides the catalog-wide preference for the <public> entries within it, inherited through nested groups. The resolver records each public entry's effective preference and consults it when falling back from an unmatched system identifier, so two entries in one catalog can prefer differently. A system match still always wins.
77 lines
3.4 KiB
Swift
77 lines
3.4 KiB
Swift
@testable import PureXML
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import Testing
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@Suite("XML catalog group-level prefer override")
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struct CatalogGroupPreferTests {
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private func resolver(_ xml: String) throws -> PureXML.Catalog.Resolver {
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try PureXML.Catalog.Resolver(xml)
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}
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@Test("A group prefer=system overrides a catalog prefer=public for its entries")
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func test_groupOverridesCatalog() throws {
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let xml = """
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<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog" prefer="public">
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<public publicId="-//ROOT//EN" uri="root.dtd"/>
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<group prefer="system">
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<public publicId="-//GROUP//EN" uri="group.dtd"/>
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</group>
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</catalog>
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"""
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let catalog = try resolver(xml)
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// Root entry inherits prefer=public: consulted even with an unmatched system id.
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#expect(catalog.resolveExternalIdentifier(publicID: "-//ROOT//EN", systemID: "urn:unmatched") == "root.dtd")
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// Group entry is prefer=system: not consulted when a system id is present.
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#expect(catalog.resolveExternalIdentifier(publicID: "-//GROUP//EN", systemID: "urn:unmatched") == nil)
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// But still consulted when there is no system id at all.
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#expect(catalog.resolveExternalIdentifier(publicID: "-//GROUP//EN", systemID: nil) == "group.dtd")
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}
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@Test("A group prefer=public overrides a catalog prefer=system for its entries")
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func test_groupOverridesSystemCatalog() throws {
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let xml = """
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<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog" prefer="system">
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<public publicId="-//ROOT//EN" uri="root.dtd"/>
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<group prefer="public">
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<public publicId="-//GROUP//EN" uri="group.dtd"/>
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</group>
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</catalog>
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"""
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let catalog = try resolver(xml)
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// Root inherits prefer=system: public not consulted alongside a system id.
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#expect(catalog.resolveExternalIdentifier(publicID: "-//ROOT//EN", systemID: "urn:unmatched") == nil)
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// Group entry is prefer=public: consulted even with an unmatched system id.
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#expect(catalog.resolveExternalIdentifier(publicID: "-//GROUP//EN", systemID: "urn:unmatched") == "group.dtd")
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}
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@Test("A nested group inherits the enclosing group's prefer")
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func test_nestedGroupInherits() throws {
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let xml = """
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<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog" prefer="public">
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<group prefer="system">
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<group>
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<public publicId="-//DEEP//EN" uri="deep.dtd"/>
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</group>
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</group>
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</catalog>
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"""
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let catalog = try resolver(xml)
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// Deep entry inherits prefer=system through the inner group.
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#expect(catalog.resolveExternalIdentifier(publicID: "-//DEEP//EN", systemID: "urn:unmatched") == nil)
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#expect(catalog.resolveExternalIdentifier(publicID: "-//DEEP//EN", systemID: nil) == "deep.dtd")
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}
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@Test("A system match always wins regardless of group prefer")
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func test_systemAlwaysWins() throws {
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let xml = """
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<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog" prefer="public">
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<group prefer="system">
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<public publicId="-//P//EN" uri="by-public.dtd"/>
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<system systemId="urn:s" uri="by-system.dtd"/>
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</group>
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</catalog>
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"""
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let catalog = try resolver(xml)
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#expect(catalog.resolveExternalIdentifier(publicID: "-//P//EN", systemID: "urn:s") == "by-system.dtd")
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}
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}
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