Mihaela Mihaljevic
89f8ccc95a
Slice 3 of #92. The DTD validator's imperative walk becomes declared Validation values over a DTDSchema document: - DTDSchema is now just the schema (content models + attribute declarations) and serves as the rules' Document context; its validate/walk methods are gone. - contentModel and attributeDeclarations are Validation<Element, DTDSchema>, so every content-model and attribute violation is now located by coding path ("... at path: r/a"). undeclaredElement is added only in strict mode. - identifierIntegrity is a Validation<Node, DTDSchema> gated to the root, doing the document-wide ID-uniqueness and IDREF-resolution checks in one pass. - DTD.validator(strict:) assembles the rule set; validateAgainstInternalDTD runs it and returns [ValidationError] instead of [Issue]. A new test pins the located result. Schema (XSD) and Schematron validators still use Issue and migrate in the following slices.
83 lines
3.6 KiB
Swift
83 lines
3.6 KiB
Swift
@testable import PureXML
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import Testing
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@Suite("DTD validation")
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struct DTDValidationTests {
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private func issues(_ xml: String, strict: Bool = false) throws -> [PureXML.Validation.ValidationError] {
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try PureXML.validateAgainstInternalDTD(xml, strict: strict)
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}
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@Test("EMPTY element accepts no content and rejects content")
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func test_empty() throws {
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try #expect(issues("<!DOCTYPE r [<!ELEMENT r EMPTY>]><r/>").isEmpty)
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try #expect(!issues("<!DOCTYPE r [<!ELEMENT r EMPTY>]><r>x</r>").isEmpty)
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try #expect(!issues("<!DOCTYPE r [<!ELEMENT r EMPTY><!ELEMENT a EMPTY>]><r><a/></r>").isEmpty)
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}
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@Test("(#PCDATA) accepts text and rejects child elements")
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func test_pcdata() throws {
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try #expect(issues("<!DOCTYPE r [<!ELEMENT r (#PCDATA)>]><r>hello</r>").isEmpty)
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try #expect(!issues("<!DOCTYPE r [<!ELEMENT r (#PCDATA)><!ELEMENT a EMPTY>]><r><a/></r>").isEmpty)
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}
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@Test("Sequence content model enforces order and presence")
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func test_sequence() throws {
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let dtd = "<!DOCTYPE r [<!ELEMENT r (a,b)><!ELEMENT a EMPTY><!ELEMENT b EMPTY>]>"
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try #expect(issues("\(dtd)<r><a/><b/></r>").isEmpty)
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try #expect(!issues("\(dtd)<r><b/><a/></r>").isEmpty)
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try #expect(!issues("\(dtd)<r><a/></r>").isEmpty)
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}
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@Test("Choice content model accepts exactly one alternative")
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func test_choice() throws {
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let dtd = "<!DOCTYPE r [<!ELEMENT r (a|b)><!ELEMENT a EMPTY><!ELEMENT b EMPTY>]>"
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try #expect(issues("\(dtd)<r><a/></r>").isEmpty)
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try #expect(issues("\(dtd)<r><b/></r>").isEmpty)
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try #expect(!issues("\(dtd)<r><a/><b/></r>").isEmpty)
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}
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@Test("Occurrence indicators bound repetition")
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func test_occurrence() throws {
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let star = "<!DOCTYPE r [<!ELEMENT r (a)*><!ELEMENT a EMPTY>]>"
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try #expect(issues("\(star)<r></r>").isEmpty)
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try #expect(issues("\(star)<r><a/><a/><a/></r>").isEmpty)
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let plus = "<!DOCTYPE r [<!ELEMENT r (a)+><!ELEMENT a EMPTY>]>"
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try #expect(!issues("\(plus)<r></r>").isEmpty)
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let optional = "<!DOCTYPE r [<!ELEMENT r (a?,b)><!ELEMENT a EMPTY><!ELEMENT b EMPTY>]>"
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try #expect(issues("\(optional)<r><b/></r>").isEmpty)
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}
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@Test("Mixed content allows only the declared elements")
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func test_mixed() throws {
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let dtd = "<!DOCTYPE r [<!ELEMENT r (#PCDATA|a)*><!ELEMENT a EMPTY><!ELEMENT b EMPTY>]>"
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try #expect(issues("\(dtd)<r>text<a/>more</r>").isEmpty)
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try #expect(!issues("\(dtd)<r><b/></r>").isEmpty)
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}
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@Test("Element content rejects character data")
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func test_elementContentRejectsText() throws {
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let dtd = "<!DOCTYPE r [<!ELEMENT r (a)><!ELEMENT a EMPTY>]>"
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try #expect(!issues("\(dtd)<r>text<a/></r>").isEmpty)
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}
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@Test("Strict mode rejects undeclared elements")
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func test_strictUndeclared() throws {
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let dtd = "<!DOCTYPE r [<!ELEMENT r ANY>]>"
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try #expect(issues("\(dtd)<r><undeclared/></r>", strict: false).isEmpty)
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try #expect(!issues("\(dtd)<r><undeclared/></r>", strict: true).isEmpty)
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}
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@Test("A document without a DTD reports no content-model issues")
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func test_noDTD() throws {
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try #expect(issues("<r><a/></r>").isEmpty)
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}
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@Test("A content-model violation is located by coding path")
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func test_violationCarriesPath() throws {
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let dtd = "<!DOCTYPE r [<!ELEMENT r (a)><!ELEMENT a EMPTY>]>"
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let found = try issues("\(dtd)<r><a>oops</a></r>")
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#expect(found.count == 1)
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#expect(String(describing: found[0]) == "element <a> is declared EMPTY but has content at path: r/a")
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}
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}
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