Mihaela M
234e0382e6
emptyDocument, expectedMappingKey, and tabIndentation were never thrown anywhere in the parser. Empty and comment-only documents parse to null, the mapping-key path throws unexpectedToken with an "expected mapping key" message, and tabs in indentation are reported by the validation layer's PreflightScanner rather than the parser. Drop the dead cases and their switch arms and description test assertions. No reachable behavior changes; the PropertyMutation.tabIndentation test mutation is unrelated and untouched.
81 lines
4.3 KiB
Swift
81 lines
4.3 KiB
Swift
@testable import PureYAML
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import Testing
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@Suite("Parsing Errors")
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struct ParsingErrorTests {
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@Test("Reports exact parser errors")
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func test_errorReporting() {
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expectParseError("root:\n child: yes\n wrong: no", .unexpectedIndentation(line: 3))
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expectParseError("- one\nkey: value", .mixedCollectionStyles(line: 2))
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expectParseError("root:\n child: value\n dangling", .unexpectedToken(
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expected: "mapping key",
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actual: "scalar value=\"dangling\" style=plain",
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line: 3,
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column: 3,
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))
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expectParseError("name: \"open", .unterminatedQuotedString(line: 1))
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expectParseError("name: 'open", .unterminatedQuotedString(line: 1))
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expectParseError("second: *missing", .undefinedAlias(anchor: "missing", line: 1, column: 9))
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expectParseError("%YAML 1.3\n---\nvalue: yes", .incompatibleYAMLDirective(line: 1))
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expectParseError("value: !!int nope", .invalidTaggedScalar(
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tag: "tag:yaml.org,2002:int",
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value: "nope",
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line: 1,
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column: 8,
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))
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}
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@Test("Parses empty and comment-only documents as null")
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func test_emptyAndCommentOnlyDocumentsParseAsNull() throws {
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#expect(try PureYAML.parse("") == .null)
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#expect(try PureYAML.parse("# comment only") == .null)
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#expect(try PureYAML.parse(" \n# comment only\n") == .null)
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}
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@Test("Parses tab indentation with permissive tab stops")
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func test_tabIndentationUsesPermissiveTabStops() throws {
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let root = try requireMapping(PureYAML.parse(
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"""
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root:
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\tchild: value
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""",
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))
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#expect(root?.mapping("root")?["child"] == .string("value"))
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}
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@Test("Parser errors describe returned failures")
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func test_errorDescriptions() {
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#expect(PureYAML.Parsing.ParseError.unexpectedIndentation(line: 3).description == "unexpected indentation at line 3")
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#expect(PureYAML.Parsing.ParseError.mixedCollectionStyles(line: 4).description == "mapping and sequence entries are mixed at line 4")
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#expect(PureYAML.Parsing.ParseError.expectedAnchorName(line: 6).description == "expected an anchor name at line 6")
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#expect(PureYAML.Parsing.ParseError.expectedAliasName(line: 7).description == "expected an alias name at line 7")
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#expect(PureYAML.Parsing.ParseError.unterminatedTag(line: 8).description == "unterminated tag at line 8")
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#expect(PureYAML.Parsing.ParseError.unterminatedQuotedString(line: 9).description == "unterminated quoted string at line 9")
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#expect(PureYAML.Parsing.ParseError.incompatibleYAMLDirective(line: 10).description == "incompatible YAML directive at line 10")
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#expect(PureYAML.Parsing.ParseError.unsupportedDirective(name: "%FOO", line: 10).description == "unsupported directive '%FOO' at line 10")
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#expect(PureYAML.Parsing.ParseError.unsupportedMultiDocumentStream(line: 10).description == "multi-document streams are not supported at line 10")
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#expect(PureYAML.Parsing.ParseError.expectedNode(line: 10, column: 2).description == "expected a YAML node at line 10, column 2")
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#expect(PureYAML.Parsing.ParseError.expectedScalarKey(line: 11, column: 3).description == "expected a scalar mapping key at line 11, column 3")
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#expect(PureYAML.Parsing.ParseError.undefinedAlias(anchor: "item", line: 12, column: 4).description == "undefined alias 'item' at line 12, column 4")
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#expect(PureYAML.Parsing.ParseError.invalidTaggedScalar(
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tag: "tag:yaml.org,2002:int",
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value: "nope",
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line: 13,
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column: 5,
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).description == "invalid scalar 'nope' for tag 'tag:yaml.org,2002:int' at line 13, column 5")
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#expect(PureYAML.Parsing.ParseError.unexpectedEvent(
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expected: "mapping key",
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actual: "sequenceStart anchor=- tag=- style=flow @1:1@0",
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line: 13,
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column: 5,
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).description == "expected mapping key at line 13, column 5, found sequenceStart anchor=- tag=- style=flow @1:1@0")
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#expect(PureYAML.Parsing.ParseError.unexpectedToken(
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expected: "stream end",
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actual: "mappingKey",
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line: 14,
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column: 1,
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).description == "expected stream end at line 14, column 1, found mappingKey")
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}
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}
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