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6d3f3009d2
PureYAML/Tests
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Mihaela Mihaljevic 6d3f3009d2 perf(parsing): correct the scanStep() floor to a checkpoint cost, not rescanning 
The previous commit concluded the ~1.75x floor needed persisted mid-token
suspension to close, since that removes the need for a checkpoint. One more
measurement shows that conclusion was wrong for the floor itself: feeding the
entire 9.5MB file as a single chunk, so isFinal stays false until the true
end and essentially no real rescanning can occur, still measures 1.75x,
identical to 1,000,000-scalar and 65536-scalar chunk sizes.

The overhead is actually two independent costs. A fixed floor (~1.75x),
present even with zero rescanning, from copying the whole Scanner on every
fetchNextToken() call whenever isFinal is false, whether or not that copy is
ever used to roll back; since isFinal only becomes true once, on the last
chunk, that copy is paid for virtually every token in a real streaming
session. And a rescan-driven tail that only appears below roughly
4096-scalar chunks (up to 11.54x at 16 scalars).

Mid-token suspension would eliminate the rescan tail, not the floor. A fix
for the floor is not yet designed: every field the checkpoint covers can be
mutated before a dry point is reached within a single fetch, so no smaller
subset is obviously safe to skip, and isFinal: true remains the only
provably safe condition for skipping it entirely.
2026-07-10 01:23:39 +02:00
..
Fixtures fix(parsing): reject a misindented multi-line quoted scalar continuation 2026-06-24 22:09:14 +02:00
PureYAMLJSONTests Merge conformance/yaml-test-suite-gaps: the libyaml port becomes the engine on main 2026-07-05 00:23:48 +02:00
ACMEZephyrFixtureTests.swift feat(parser): harden diagnostics and streaming 2026-06-06 07:57:48 +02:00
AdditionalCoverageTests.swift test: cover the remaining low-level paths 2026-06-26 08:59:24 +02:00
AliasAsMappingKeyTests.swift fix(parsing): accept an alias node as an implicit mapping key 2026-06-29 03:35:56 +02:00
AliasPropertiesTests.swift fix(parsing): reject an anchor or tag on an alias node 2026-06-27 21:11:10 +02:00
AnchoredIndentedNodeParsingTests.swift feat(model): support complex mapping keys 2026-06-05 16:08:45 +02:00
AnchoredMappingKeyTests.swift fix(parsing): allow an anchor or tag on a non-first mapping key 2026-06-27 00:21:38 +02:00
AnchorOnNullValueTests.swift fix(parsing): resolve an alias to an anchor on a null value 2026-06-29 02:56:17 +02:00
ArbitraryAnyDecisionTests.swift docs(api): reject arbitrary any conversion 2026-06-05 14:34:17 +02:00
BareDocumentAfterEndTests.swift fix(parsing): parse a bare document after a document-end marker 2026-06-28 04:23:06 +02:00
BlockEntryAfterFlowTests.swift fix(parsing): reject a block entry after a flow collection on a line 2026-06-28 01:34:55 +02:00
BlockScalarChompingTests.swift fix(parsing): preserve leading blank lines in block scalars 2026-06-26 08:42:16 +02:00
BlockScalarDocumentBoundaryTests.swift fix(parsing): end a root block scalar at a document marker 2026-06-29 08:57:39 +02:00
BlockScalarIndentIndicatorTests.swift fix(parsing): base an inline-mapping indent indicator on the mapping 2026-06-28 23:24:21 +02:00
BlockScalarLeadingBlankTabTests.swift fix(parsing): keep a tab on a leading blank of a block scalar 2026-06-29 01:52:58 +02:00
BlockScalarLeadingBlankTests.swift fix(parsing): reject an over-indented leading line in a block scalar 2026-06-28 00:21:57 +02:00
BlockScalarPercentContentTests.swift fix(parsing): keep a leading percent in a block scalar literal 2026-06-29 05:04:32 +02:00
BlockScalarTabContentTests.swift fix(parsing): keep tabs in block scalar content verbatim 2026-06-28 20:53:40 +02:00
BlockScalarTrailingCommentTests.swift fix(parsing): comments and over-indented blanks ending block scalars 2026-06-27 15:34:13 +02:00
BlockSequenceAfterPropertyTests.swift fix(parsing): reject a block sequence inline after a node property 2026-06-27 23:14:54 +02:00
CanonicalEventConformanceTests.swift test(conformance): add the canonical event-stream conformance gate 2026-06-29 10:13:45 +02:00
CodableCompatibilityFixtures.swift feat(codable): broaden compatibility coverage 2026-06-05 12:49:20 +02:00
CodableCompatibilityTests.swift Add machine-readable validation reports 2026-06-05 20:39:32 +02:00
CodableTypeMatrixTests.swift test: round-trip the full scalar type matrix through Codable containers 2026-06-26 09:04:54 +02:00
CodingTests.swift feat(coding): add unkeyed typed conversion 2026-06-05 12:23:52 +02:00
CollectionCompatibilityFixtures.swift feat(parsing): run the whole library on the ported engine 2026-06-24 18:02:22 +02:00
CommentInPlainScalarTests.swift fix(parsing): reject a comment interrupting a multi-line plain scalar 2026-06-27 19:47:28 +02:00
CommentWhitespaceTests.swift fix(parsing): reject a comment glued to earlier content on its line 2026-06-27 15:53:16 +02:00
CompactNestedSequenceTests.swift fix(parsing): bound a block sequence to its own column for siblings 2026-06-28 22:37:36 +02:00
ComplexMappingKeyCodableTests.swift feat(model): support complex mapping keys 2026-06-05 16:08:45 +02:00
ComplexMappingKeyDumperTests.swift feat(model): support complex mapping keys 2026-06-05 16:08:45 +02:00
ComplexMappingKeyParsingTests.swift fix(parsing): an explicit key with no value maps to null 2026-06-26 22:28:13 +02:00
ComplexMappingKeyTestSupport.swift feat(model): support complex mapping keys 2026-06-05 16:08:45 +02:00
ComplexMappingKeyValidationTests.swift feat(model): support complex mapping keys 2026-06-05 16:08:45 +02:00
DiagnosticValidationReportTests.swift feat(parsing): route the event API through the ported libyaml engine 2026-06-24 17:32:29 +02:00
DirectiveAfterDocumentEndTests.swift fix(parsing): allow a directive after a document-end marker 2026-06-28 02:09:01 +02:00
DirectiveTests.swift fix(parsing): require an explicit document after a directive 2026-06-27 17:18:47 +02:00
DocumentationExampleTests.swift feat(emitting): dump YAML streams 2026-06-05 17:14:41 +02:00
DocumentEndContentTests.swift fix(parsing): reject content after a document end marker 2026-06-27 17:56:37 +02:00
DocumentMarkerInScalarTests.swift fix(parsing): reject a document marker inside a multi-line scalar 2026-06-27 23:20:52 +02:00
DocumentMarkerNodeTests.swift fix(parsing): fold a document-root plain scalar across column-1 lines 2026-06-26 21:30:49 +02:00
DoubleQuotedEscapeTests.swift fix(parsing): enforce the full YAML 1.2 double-quoted escape table 2026-06-27 16:19:25 +02:00
DoubleQuotedFoldingTests.swift fix(parsing): fold line breaks in multi-line double-quoted scalars 2026-06-26 21:13:13 +02:00
DownstreamDocumentFixtures.swift test(compatibility): add downstream document fixtures 2026-06-05 13:45:23 +02:00
DownstreamDocumentTests.swift feat(parser): expand YAML merge keys 2026-06-05 15:12:55 +02:00
DumperEmptyCollectionTests.swift Add machine-readable validation reports 2026-06-05 20:39:32 +02:00
DumperTests.swift fix(emitting): escape CRLF per unicode scalar in double-quoted output 2026-06-23 22:23:40 +02:00
EmitterCorpusTests.swift feat(emitting): broaden literal block fixtures 2026-06-05 13:37:33 +02:00
EmptyBlockScalarChompingTests.swift fix(parsing): chomp the blank lines of an empty block scalar 2026-06-28 22:31:09 +02:00
EmptyTaggedNodeTests.swift fix(parsing): treat a dangling anchor or tag as an empty node 2026-06-28 03:21:04 +02:00
EventStreamingParserTests.swift refactor(parsing): delete the hand-rolled parser, leaving the ported engine 2026-06-24 18:07:20 +02:00
ExplicitKeyMultilineFoldTests.swift Merge conformance/yaml-test-suite-gaps: the libyaml port becomes the engine on main 2026-07-05 00:23:48 +02:00
ExplicitKeyTests.swift fix(parsing): parse a property-only explicit mapping key as an empty key 2026-06-29 08:56:58 +02:00
FlowCollectionAsMappingKeyTests.swift fix(parsing): parse a flow collection before a colon as a mapping key 2026-06-28 18:34:11 +02:00
FlowDashScalarTests.swift fix(parsing): reject a lone dash before a flow indicator 2026-06-28 01:00:57 +02:00
FlowEmptyEntryTests.swift fix(parsing): reject empty entries in flow collections 2026-06-27 16:26:46 +02:00
FlowExplicitEmptyKeyTests.swift fix(parsing): parse an empty explicit key in a flow mapping 2026-06-29 09:04:29 +02:00
FlowExplicitKeyTests.swift fix(parsing): parse an explicit key inside a flow collection 2026-06-29 01:17:26 +02:00
FlowMappingEmptyKeyTests.swift fix(parsing): allow a flow mapping entry with no value 2026-06-29 01:42:02 +02:00
FlowMappingNoValueTests.swift fix(parsing): allow a flow mapping entry with no value 2026-06-29 01:42:02 +02:00
FlowMultilineValueTests.swift fix(parsing): parse a flow mapping value on the next line 2026-06-29 21:40:12 +02:00
FlowSequenceEmptyKeyTests.swift fix(parsing): treat colon-led flow sequence element as empty-key map 2026-06-28 19:43:56 +02:00
FoldedScalarBlankLineTests.swift fix(parsing): keep both breaks at a folded blank by a more-indented line 2026-06-28 21:14:14 +02:00
ImplicitNullKeyTests.swift fix(parsing): parse a property-only block mapping key as an empty key 2026-06-29 08:26:50 +02:00
IndicatorTabBoundaryTests.swift fix(parsing): skip tabs as mid-line separation white space 2026-06-28 20:35:04 +02:00
InlineBlockSequenceValueTests.swift test(parsing): assert an explicit-key compact sequence's value 2026-06-29 07:23:57 +02:00
InlineKeyPropertyAnchorTests.swift fix(parsing): bind an inline first-key property to the key 2026-06-29 03:24:30 +02:00
InlineNestedMappingTests.swift fix(parsing): reject inline nested block mappings 2026-06-27 18:28:57 +02:00
InlineSequenceItemContinuationTests.swift fix(parsing): end an inline item value at a sibling block entry 2026-06-29 02:09:57 +02:00
JSONCompatibilityTests.swift feat(parser): harden diagnostics and streaming 2026-06-06 07:57:48 +02:00
KeyedCodingTests.swift feat(coding): add unkeyed typed conversion 2026-06-05 12:23:52 +02:00
LibYAMLCharacterClassTests.swift feat(parsing): port libyaml character-class predicates to Swift 2026-06-24 03:00:28 +02:00
LibYAMLIndentEngineTests.swift feat(parsing): begin faithful libyaml scanner port (indent engine) 2026-06-24 02:46:29 +02:00
LibYAMLParserTests.swift feat(parsing): exact scalar end positions in the located parse 2026-06-26 02:25:01 +02:00
LibYAMLPortConformanceTests.swift fix(parsing): reject a tab where a token must start, add port differential 2026-06-24 17:12:36 +02:00
LibYAMLReaderTests.swift feat(parsing): port libyaml input reader to Swift 2026-06-24 03:04:08 +02:00
LibYAMLScannerFetchTests.swift feat(parsing): port libyaml directive scanner to Swift 2026-06-24 16:54:04 +02:00
LibYAMLSimpleKeyTests.swift fix(parsing): reject a multi-line implicit key in a flow sequence 2026-06-24 21:50:41 +02:00
LiteralBlockEmissionFixtures.swift feat(emitting): broaden literal block fixtures 2026-06-05 13:37:33 +02:00
LocatedValueConformanceTests.swift feat(parsing): opt-in located parse on the hand-rolled engine 2026-06-29 07:14:42 +02:00
MappingValueTabBoundaryTests.swift fix(parsing): accept a tab after the colon value indicator 2026-06-28 20:30:24 +02:00
MergeKeyCompatibilityTests.swift feat(parser): expand YAML merge keys 2026-06-05 15:12:55 +02:00
ModelTests.swift feat(parsing): add reader scanner core 2026-06-05 07:40:23 +02:00
MultilineFlowKeyTests.swift fix(parsing): let a flow plain key span lines 2026-06-29 01:38:33 +02:00
MultilineImplicitKeyTests.swift Merge conformance/yaml-test-suite-gaps: the libyaml port becomes the engine on main 2026-07-05 00:23:48 +02:00
MultilinePropertyIndentTests.swift fix(parsing): carry spanned properties to a deeper indented node 2026-06-29 04:05:04 +02:00
NonCoreTagScalarResolutionTests.swift fix(parsing): keep a non-core-tagged scalar as a string 2026-06-28 22:25:48 +02:00
NumericCodingLadderTests.swift test: cover numeric ladder, NaN hashing, unkeyed edges, error paths 2026-06-26 07:50:08 +02:00
ParsingAliasTests.swift Harden parser against real YAML fixtures 2026-06-05 19:34:30 +02:00
ParsingBlockScalarIndicatorTests.swift Merge conformance/yaml-test-suite-gaps: the libyaml port becomes the engine on main 2026-07-05 00:23:48 +02:00
ParsingCompatibilityTests.swift fix(parsing): keep a non-core-tagged scalar as a string 2026-06-28 22:25:48 +02:00
ParsingErrorPathTests.swift Merge conformance/yaml-test-suite-gaps: the libyaml port becomes the engine on main 2026-07-05 00:23:48 +02:00
ParsingErrorTests.swift Merge conformance/yaml-test-suite-gaps: the libyaml port becomes the engine on main 2026-07-05 00:23:48 +02:00
ParsingEventTests.swift feat(parsing): opt-in located parse on the hand-rolled engine 2026-06-29 07:14:42 +02:00
ParsingIndentationRegressionTests.swift Add production validation reports 2026-06-05 20:23:20 +02:00
ParsingMultilineScalarTests.swift Merge conformance/yaml-test-suite-gaps: the libyaml port becomes the engine on main 2026-07-05 00:23:48 +02:00
ParsingNestingLimitTests.swift fix(parsing): bound nesting depth so pathological input errors instead of crashing 2026-06-23 09:29:45 +02:00
ParsingTests.swift Harden parser against real YAML fixtures 2026-06-05 19:34:30 +02:00
PlainScalarTabCommentTests.swift fix(parsing): end a plain scalar at a tab before a comment 2026-06-28 21:24:59 +02:00
PlainScalarTabFoldingTests.swift fix(parsing): fold tabs in plain scalar continuation lines 2026-06-28 21:00:32 +02:00
PreflightScannerTests.swift feat(parser): harden diagnostics and streaming 2026-06-06 07:57:48 +02:00
QuotedKeyTests.swift fix(parsing): allow a space before the colon of a quoted mapping key 2026-06-27 01:19:28 +02:00
RealYAMLCorpusPropertyTests.swift feat(parsing): add a resumable scanner increment and broaden the mutation suite 2026-07-09 23:38:39 +02:00
RealYAMLCorpusTests.swift feat(parser): harden diagnostics and streaming 2026-06-06 07:57:48 +02:00
RealYAMLFixtureTests.swift Harden parser against real YAML fixtures 2026-06-05 19:34:30 +02:00
RepeatedDocumentEndTests.swift fix(parsing): allow a repeated document-end marker 2026-06-29 08:32:26 +02:00
RootBlockScalarIndentationTests.swift fix(parsing): fold root block scalars with column-0 content 2026-06-28 17:42:38 +02:00
RoundTripDemonstrationTests.swift test: demonstrate yaml/json parsing and generation round-trips 2026-06-08 00:13:56 +02:00
ScalarCompatibilityFixtures.swift Add scalar compatibility corpus 2026-06-05 13:07:04 +02:00
SequencePropertyIndentTests.swift fix(parsing): bind an indented property to a zero-indent sequence 2026-06-29 03:44:53 +02:00
SingleQuotedFoldingTests.swift fix(parsing): fold line breaks in multi-line single-quoted scalars 2026-06-26 21:18:55 +02:00
StreamDumpingTests.swift feat(emitting): dump YAML streams 2026-06-05 17:14:41 +02:00
StreamingScannerDifferentialTests.swift feat(parsing): add a resumable scanner increment and broaden the mutation suite 2026-07-09 23:38:39 +02:00
StreamingScannerPerformanceTests.swift perf(parsing): correct the scanStep() floor to a checkpoint cost, not rescanning 2026-07-10 01:23:39 +02:00
StreamParsingTests.swift fix(parsing): parse a bare document after a document-end marker 2026-06-28 04:23:06 +02:00
TaggedCompatibilityTests.swift fix(parsing): keep a non-core-tagged scalar as a string 2026-06-28 22:25:48 +02:00
TaggedConstructorTests.swift feat(tagged): add typed constructor policy 2026-06-05 16:24:11 +02:00
TaggedKeyUniquenessTests.swift feat(validation): enforce tagged mapping-key uniqueness 2026-06-28 17:03:20 +02:00
TaggedZeroIndentSequenceTests.swift fix(parsing): end a tagged zero-indent sequence at a sibling key 2026-06-29 04:48:47 +02:00
TagHandleDiagnosticTests.swift Merge conformance/yaml-test-suite-gaps: the libyaml port becomes the engine on main 2026-07-05 00:23:48 +02:00
TestSupport.swift Harden parser against real YAML fixtures 2026-06-05 19:34:30 +02:00
UndefinedTagHandleTests.swift Merge conformance/yaml-test-suite-gaps: the libyaml port becomes the engine on main 2026-07-05 00:23:48 +02:00
UnkeyedCodingFixtures.swift test(coding): add sequence fixtures and contract gate 2026-06-05 12:33:09 +02:00
UnkeyedCodingTests.swift Add machine-readable validation reports 2026-06-05 20:39:32 +02:00
UnkeyedContainerEdgeTests.swift test: cover numeric ladder, NaN hashing, unkeyed edges, error paths 2026-06-26 07:50:08 +02:00
UnkeyedEncodingFixtures.swift Add machine-readable validation reports 2026-06-05 20:39:32 +02:00
UnkeyedFailureFixtures.swift test(coding): add sequence fixtures and contract gate 2026-06-05 12:33:09 +02:00
UnsupportedYAMLGapsFixtures.swift fix(parsing): ignore an unrecognized directive instead of rejecting it 2026-06-26 22:20:18 +02:00
ValidationBuiltinRuleTests.swift refactor(validation): retire the legacy Rule for one check type 2026-06-28 16:43:31 +02:00
ValidationCheckMachineryTests.swift refactor(validation): fold the tagged validator onto one framework 2026-06-28 10:41:10 +02:00
ValidationCombinatorTests.swift refactor(validation): fold the tagged validator onto one framework 2026-06-28 10:41:10 +02:00
ValidationConfigurationTests.swift feat(validation): configure the validator by rule identity 2026-06-28 05:18:06 +02:00
ValidationCorpusFixtures.swift feat(parser): expand YAML merge keys 2026-06-05 15:12:55 +02:00
ValidationCorpusSupport.swift refactor(validation): retire the legacy Rule for one check type 2026-06-28 16:43:31 +02:00
ValidationCorpusTests.swift test(validation): expand fixture corpus 2026-06-05 14:29:52 +02:00
ValidationCoverageMetaTests.swift test(validation): extend the finding-coverage law to both layers 2026-06-28 17:10:03 +02:00
ValidationFailureFixtureTests.swift Harden parser against real YAML fixtures 2026-06-05 19:34:30 +02:00
ValidationModelTests.swift feat(coding): add scalar typed conversion 2026-06-05 11:45:00 +02:00
ValidationModeTests.swift refactor(validation): retire the legacy Rule for one check type 2026-06-28 16:43:31 +02:00
ValidationReportTests.swift refactor(validation): retire the legacy Rule for one check type 2026-06-28 16:43:31 +02:00
ValidationTests.swift refactor(validation): retire the legacy Rule for one check type 2026-06-28 16:43:31 +02:00
ValidationTestSupport.swift refactor(validation): retire the legacy Rule for one check type 2026-06-28 16:43:31 +02:00
ValueHashableTests.swift test: cover numeric ladder, NaN hashing, unkeyed edges, error paths 2026-06-26 07:50:08 +02:00
ValuePropertyIndentationTests.swift fix(parsing): reject a later under-indented property on a mapping value 2026-06-28 01:44:48 +02:00
YAMLDirectiveTests.swift fix(parsing): accept a higher-minor %YAML version 2026-06-29 02:34:55 +02:00
YAMLTestSuiteConformanceTests.swift fix(tests): compile conformance on Linux without CoreFoundation 2026-06-29 13:31:54 +02:00
YAMLTestSuiteGapsTests.swift fix(parsing): reject misplaced directives, refresh suite manifest 2026-06-24 19:51:39 +02:00