Mihaela M
08e1979085
The double-quoted decoder appended real line breaks and continuation-line indentation verbatim, so a multi-line "..." scalar kept its raw newlines and leading whitespace instead of folding. It now applies YAML flow folding at each unescaped break: a single break folds to a space, a blank line to one newline, and whitespace adjacent to a break (the line's trailing, the next line's leading) is stripped. First-line leading and last-line trailing whitespace stay (they sit next to a quote, not a break), and \n escapes are still decoded to literal newlines. Measured against the official YAML test-suite, value-level conformance rises from 135/169 (79.9%) to 143/169 (84.6%) with no regression. Parse-level is unchanged: these documents already parsed, just to the wrong tree, which only the value-level metric exposes.
28 lines
1.3 KiB
Swift
28 lines
1.3 KiB
Swift
@testable import PureYAML
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import Testing
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@Suite("Double-quoted scalar folding")
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struct DoubleQuotedFoldingTests {
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@Test("A multi-line double-quoted scalar folds breaks, blank lines, and adjacent whitespace")
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func test_doubleQuotedLineFolding() throws {
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// First-line leading and last-line trailing whitespace are kept (next to a quote, not a
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// break); a single break folds to a space; a blank line folds to one newline; leading
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// whitespace on continuation lines and trailing whitespace before a break are stripped.
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let parsed = try PureYAML.parse("\" 1st non-empty\n\n 2nd non-empty \n\t3rd non-empty \"")
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#expect(parsed == .string(" 1st non-empty\n2nd non-empty 3rd non-empty "))
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}
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@Test("An escaped newline stays literal while real breaks fold to a space")
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func test_doubleQuotedEscapeVersusBreak() throws {
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// A real line break between the two lines folds to a space; the trailing `\n` escape
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// decodes to a literal newline.
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let parsed = try PureYAML.parse("\"So does this\n quoted scalar.\\n\"")
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#expect(parsed == .string("So does this quoted scalar.\n"))
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}
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@Test("A single-line double-quoted scalar is unchanged")
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func test_doubleQuotedSingleLine() throws {
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#expect(try PureYAML.parse("\"hello world\"") == .string("hello world"))
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}
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}
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