Mihaela Mihaljevic
a9be5253cf
Add the PureXML.Canonical namespace rendering the C14N form: namespaces sorted by prefix (default first), attributes by namespace URI then local name, empty elements expanded to start/end pairs, CDATA folded into escaped text, and the C14N escaping rules. Inclusive mode renders every in-scope namespace; exclusive mode renders only visibly-used namespaces plus an InclusiveNamespaces prefix list. Comments omitted unless requested. For whole-tree canonicalization C14N 1.0 and 1.1 coincide. Closes #54 Closes #55 Closes #56 Closes #26
73 lines
2.8 KiB
Swift
73 lines
2.8 KiB
Swift
@testable import PureXML
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import Testing
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@Suite("Canonical XML")
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struct CanonicalTests {
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private func c14n(_ xml: String, _ options: PureXML.Canonical.Options = .inclusive) throws -> String {
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try PureXML.Canonical.canonicalize(PureXML.parse(xml), options: options)
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}
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@Test("Empty elements expand to start/end pairs")
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func test_emptyElement() throws {
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#expect(try c14n("<a><b/></a>") == "<a><b></b></a>")
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}
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@Test("Attributes are sorted by namespace URI then local name")
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func test_attributeOrdering() throws {
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#expect(try c14n("<e c=\"3\" a=\"1\" b=\"2\"/>") == "<e a=\"1\" b=\"2\" c=\"3\"></e>")
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}
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@Test("Text special characters are escaped, but not quotes")
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func test_textEscaping() throws {
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#expect(try c14n("<a>1 < 2 & 3 > 4</a>") == "<a>1 < 2 & 3 > 4</a>")
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}
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@Test("Attribute values escape quotes and whitespace, not >")
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func test_attributeEscaping() throws {
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let xml = "<a v=\"x"y	z\"/>"
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#expect(try c14n(xml) == "<a v=\"x"y	z\"></a>")
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}
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@Test("Comments are omitted by default and kept when requested")
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func test_comments() throws {
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#expect(try c14n("<a><!--note--><b/></a>") == "<a><b></b></a>")
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let withComments = PureXML.Canonical.Options(includeComments: true)
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#expect(try c14n("<a><!--note--><b/></a>", withComments) == "<a><!--note--><b></b></a>")
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}
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@Test("CDATA is rendered as escaped text")
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func test_cdata() throws {
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#expect(try c14n("<a><![CDATA[x<y]]></a>") == "<a>x<y</a>")
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}
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@Test("Namespace declarations are rendered and sorted, default first")
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func test_namespaceOrdering() throws {
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let xml = "<e xmlns:b=\"urn:b\" xmlns=\"urn:d\" xmlns:a=\"urn:a\"/>"
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#expect(try c14n(xml) == "<e xmlns=\"urn:d\" xmlns:a=\"urn:a\" xmlns:b=\"urn:b\"></e>")
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}
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@Test("Inclusive C14N keeps a namespace declared but only used by a child")
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func test_inclusiveKeepsUnused() throws {
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let xml = "<r xmlns:x=\"urn:x\"><x:c/></r>"
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#expect(try c14n(xml) == "<r xmlns:x=\"urn:x\"><x:c></x:c></r>")
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}
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@Test("Exclusive C14N drops a namespace no element visibly uses")
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func test_exclusiveDropsUnused() throws {
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let xml = "<r xmlns:x=\"urn:x\"><c/></r>"
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#expect(try c14n(xml, .exclusive) == "<r><c></c></r>")
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}
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@Test("Exclusive C14N renders a namespace at the element that uses it")
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func test_exclusiveRendersAtUse() throws {
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let xml = "<r xmlns:x=\"urn:x\"><x:c/></r>"
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#expect(try c14n(xml, .exclusive) == "<r><x:c xmlns:x=\"urn:x\"></x:c></r>")
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}
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@Test("A redundant child redeclaration is not rendered twice")
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func test_noRedundantDeclaration() throws {
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let xml = "<r xmlns=\"urn:d\"><c xmlns=\"urn:d\"/></r>"
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#expect(try c14n(xml) == "<r xmlns=\"urn:d\"><c></c></r>")
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}
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}
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