Mihaela Mihaljevic
ef682808d4
Add PureXML.Parsing.SAXHandler (a struct of optional callbacks) and PureXML.parse(_:sax:), which drives the handler from the streaming event core, delivering start/end document, start/end element, characters, CDATA, comment, and processing-instruction callbacks. Element names are namespace-resolved. Closes the SAX2 epic (#19). Reimplemented from the libxml2 SAX2 model; no upstream code copied. 5 tests; 84 total.
54 lines
2.0 KiB
Swift
54 lines
2.0 KiB
Swift
@testable import PureXML
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import Testing
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@Suite("SAX")
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struct SAXTests {
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@Test("Callbacks fire in document order, bracketed by start/end document")
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func test_order() throws {
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var log: [String] = []
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let handler = PureXML.Parsing.SAXHandler(
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startDocument: { log.append("start-doc") },
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endDocument: { log.append("end-doc") },
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startElement: { name, _ in log.append("start:\(name.localName)") },
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endElement: { name in log.append("end:\(name.localName)") },
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characters: { log.append("text:\($0)") },
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)
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try PureXML.parse("<a>hi<b/></a>", sax: handler)
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#expect(log == ["start-doc", "start:a", "text:hi", "start:b", "end:b", "end:a", "end-doc"])
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}
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@Test("CDATA, comments, and processing instructions are delivered")
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func test_miscNodes() throws {
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var kinds: [String] = []
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let handler = PureXML.Parsing.SAXHandler(
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cdata: { _ in kinds.append("cdata") },
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comment: { _ in kinds.append("comment") },
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processingInstruction: { _, _ in kinds.append("pi") },
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)
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try PureXML.parse("<r><![CDATA[x]]><!--c--><?pi go?></r>", sax: handler)
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#expect(kinds == ["cdata", "comment", "pi"])
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}
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@Test("Namespace URI is resolved on SAX callbacks")
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func test_namespace() throws {
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var uri: String?
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let handler = PureXML.Parsing.SAXHandler(startElement: { name, _ in
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if name.localName == "a" { uri = name.namespaceURI }
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})
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try PureXML.parse("<a xmlns=\"http://x\"/>", sax: handler)
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#expect(uri == "http://x")
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}
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@Test("A handler with no callbacks set parses without crashing")
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func test_emptyHandler() throws {
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try PureXML.parse("<a><b/>text</a>", sax: PureXML.Parsing.SAXHandler())
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}
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@Test("An empty document is an error")
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func test_emptyDocument() {
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#expect(throws: PureXML.Parsing.ParseError.emptyDocument) {
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try PureXML.parse("", sax: PureXML.Parsing.SAXHandler())
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}
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}
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}
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