Mihaela Mihaljevic
98792a1715
Limits(strictInternalSubset: true) rejects conditional sections and parameter-entity references inside markup declarations in the internal subset, the two feature classes XML 1.0 reserves for the external subset. DeclSep references and quoted attribute defaults (AttValue) stay legal; defaults unchanged. The xmltest runner opts in, leaving case 141 (pre-Fifth-Edition name classes) as its only deviation. Closes #128
47 lines
2.3 KiB
Swift
47 lines
2.3 KiB
Swift
@testable import PureXML
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import Testing
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/// The strict internal-subset profile (#128): under
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/// `Limits(strictInternalSubset: true)` the internal DTD subset is held to
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/// the letter of XML 1.0, rejecting conditional sections and parameter-entity
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/// references inside markup declarations, both of which PureXML otherwise
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/// supports as features. Defaults are unchanged.
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@Suite("Strict internal-subset profile")
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struct StrictSubsetProfileTests {
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private let strict = PureXML.Parsing.Limits(allowDoctype: true, strictInternalSubset: true)
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private let lenient = PureXML.Parsing.Limits(allowDoctype: true)
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private func parses(_ xml: String, _ limits: PureXML.Parsing.Limits) -> Bool {
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(try? PureXML.parse(xml, limits: limits)) != nil
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}
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@Test("Conditional sections in the internal subset reject under the profile only")
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func test_conditionalSections() {
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let xml = "<!DOCTYPE doc [\n<![INCLUDE[ ]]>\n]>\n<doc></doc>"
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#expect(!parses(xml, strict))
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#expect(parses(xml, lenient))
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}
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@Test("PE references inside declarations reject under the profile only")
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func test_referencesInDeclarations() {
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let inEntityValue = "<!DOCTYPE doc [<!ELEMENT doc (#PCDATA)><!ENTITY % e \"\"><!ENTITY foo \"%e;\">]>\n<doc></doc>"
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let inContentModel = "<!DOCTYPE doc [<!ENTITY % e \"#PCDATA\"><!ELEMENT doc (%e;)>]>\n<doc></doc>"
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let inPEValue = "<!DOCTYPE doc [<!ELEMENT doc (#PCDATA)><!ENTITY % e1 \"\"><!ENTITY % e2 \"%e1;\">]>\n<doc></doc>"
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let inAttList = "<!DOCTYPE doc [<!ELEMENT doc ANY><!ENTITY % p \"a\"><!ATTLIST doc %p; CDATA #IMPLIED>]>\n<doc/>"
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for xml in [inEntityValue, inContentModel, inPEValue, inAttList] {
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#expect(!parses(xml, strict))
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#expect(parses(xml, lenient))
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}
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}
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@Test("DeclSep references and quoted defaults stay legal under the profile")
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func test_legalShapesUnaffected() {
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// A bare %pe; between declarations is production 28a DeclSep.
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let declSep = "<!DOCTYPE doc [<!ENTITY % pe \"<!ELEMENT doc ANY>\">%pe;]>\n<doc/>"
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#expect(parses(declSep, strict))
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// '%e;' inside a quoted default is an AttValue: literal text.
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let quotedDefault = "<!DOCTYPE doc [<!ENTITY % e \"foo\"><!ELEMENT doc (#PCDATA)><!ATTLIST doc a1 CDATA \"%e;\">]>\n<doc></doc>"
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#expect(parses(quotedDefault, strict))
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}
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}
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