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test(pdf-codec): work toward a genuine 100% mutation score - #1270

#1270

Draft

Mearman wants to merge 136 commits into

mainExaDev/documents.js:mainfrom

feat/100-percent-mutation-pdf-codecExaDev/documents.js:feat/100-percent-mutation-pdf-codecCopy head branch name to clipboard

Conversation Commits136 (136)Checks Files changed

Draft

test(pdf-codec): work toward a genuine 100% mutation score#1270
Mearman wants to merge 136 commits into
mainfrom
feat/100-percent-mutation-pdf-codec

Commits

Commits on Sep 16, 2026

test(pdf-codec): raise the unit suite's test timeout to absorb shared-machine contention
Mearman
committed
faa30f8
test(pdf-codec): serialize Stryker's own worker processes to one at a time
Mearman
committed
93df4b9
refactor(pdf-codec): remove sfnt fixture builder's equivalent-mutant surface
Mearman
committed
c8e7cfb
test(pdf-codec): pin sfnt.ts fixture builders' own byte layout directly
Mearman
committed
c53c930
test(pdf-codec): close sfnt.ts's remaining coverage and equivalent-mutant gaps
Mearman
committed
371bada
refactor(pdf-codec): build rc4's initial state array by index-mapping
Mearman
committed
bf67bbf
refactor(pdf-codec): drop padBigEndian's unreachable early-exit guard
Mearman
committed
89f85e9
refactor(pdf-codec): remove formatNumber's unreachable -0 normalisation
Mearman
committed
37c2423
refactor(pdf-codec): narrow applyEncryptMethod off the unused identity method
Mearman
committed
9e49af2
refactor(pdf-codec): compare parities directly in the checker8 fixture
Mearman
committed
9bfe126
refactor(pdf-codec): build jpeg2000FixtureSamples' planes by length-mapping
Mearman
committed
b8056fc
test(pdf-codec): assert throwIfAborted's DOMException name and message
Mearman
committed
5627d01
test(pdf-codec): reject a non-1 major version whose body parses cleanly
Mearman
committed
d29ec67
test(pdf-codec): refuse a font whose hhea declares zero horizontal metrics
Mearman
committed
bafdfca
test(pdf-codec): cover encodeCcittFax's degenerate-geometry guard
Mearman
committed
15a4740
test(pdf-codec): round-trip a form array through LayoutDocumentSchema
Mearman
committed
e623591
test(pdf-codec): cover deflate's level option and inflate's size guard
Mearman
committed
0c67fcc
test(pdf-codec): warn on a filespec whose /EF has no /F or /UF stream
Mearman
committed
76ad9a4
refactor(pdf-codec): dedupe pdf.ts fixture builder's boilerplate literals
Mearman
committed
d2d7a7c
test(pdf-codec): distinguish isTrueTypeCollection's own two guards
Mearman
committed
78d0242
test(pdf-codec): add a dedicated suite for parseHmtx
Mearman
committed
69f2b1f
test(pdf-codec): cover buildSimpleFont/buildCompositeFont's BaseFont fallback
Mearman
committed
478a65c
test(pdf-codec): cover writeDoublePath's fill rule and zero-bisector case
Mearman
committed
4ab48db
test(pdf-codec): add a direct test file for jbig2-generic.ts
Mearman
committed
54f1802
test(pdf-codec): cover computeFlags' FLAG_ITALIC bit
Mearman
committed
0f35581
test(pdf-codec): pin FixtureBuilder's own byte-level mechanics directly
Mearman
committed
a139ae4
test(pdf-codec): close pdf.ts fixture-consumer gaps around vacuous negatives
Mearman
committed
5018c51
refactor(pdf-codec): drive rc4's keystream loop from data.forEach
Mearman
committed
5fc3cee
refactor(pdf-codec): remove sha2's fixed-size-array equivalent mutants
Mearman
committed
055c82f
fix(pdf-codec): remove probeCff's redundant empty-Name-INDEX check
Mearman
committed
8899889
fix(pdf-codec): cover formatNumber's epsilon guard and escapeName's boundaries
Mearman
committed
808fd32
test(pdf-codec): add a dedicated suite for readXmpMetadata
Mearman
committed
8e5f704
test(pdf-codec): pin flattenCubic's own subdivision arithmetic directly
Mearman
committed
6f445a3
test(pdf-codec): close renderPdfPage's own boundary and geometry gaps
Mearman
committed
58cb944
test(pdf-codec): cover renderPdfPage's Type0/CIDFontType2 font-refusal branches
Mearman
committed
2311be7
test(pdf-codec): pin renderPdfPage's abort checks, clip boundaries, and error codes
Mearman
committed
db4a296
test(pdf-codec): cover flattenCubic's max-distance and exact-tolerance boundaries
Mearman
committed
945af72
test(pdf-codec): cover the stroke branch of drawRect, drawEllipse, and drawPath
Mearman
committed
b41d92f
test(pdf-codec): cover the empty-glyph skip, unstated descendant subtype, and header search window
Mearman
committed
23a7a82
refactor(pdf-codec): drop dead outline-face fields and a redundant length guard
Mearman
committed
1cdc32c
test(pdf-codec): cover CIDToGIDMap's own trailing-unpaired-byte bound
Mearman
committed
361ed83
test(pdf-codec): pin glyphOutlineSubpaths' contour walk directly
Mearman
committed
d28afd0
refactor(pdf-codec): eliminate two more redundant bounds guards
Mearman
committed
a19a6a3
test(pdf-codec): pin the outline-refusal diagnostic's own face-name fallback
Mearman
committed
13e511f
refactor(pdf-codec): eliminate sha2's round-expansion length equivalent mutants
Mearman
committed
749e9c7
refactor(pdf-codec): remove escapeName's dead whole-name safety check
Mearman
committed
39c0156
test(pdf-codec): align the too-small-headerSize fixture's own byte offsets
Mearman
committed
d03c28c
refactor(pdf-codec): stop writing object 0's xref-stream row as a literal
Mearman
committed
472077a
test(pdf-codec): pin header()'s default version and the first xref revision's own byte layout
Mearman
committed
f269ff8
test(pdf-codec): read a pageless document on the unaborted path
Mearman
committed
701bdb3
test(pdf-codec): pin the dedup annotation's own parse and the manifest stream's bytes
Mearman
committed
3f09271
test(pdf-codec): assert the raw XMP residue matches byte-for-byte
Mearman
committed
646f6e2
test(pdf-codec): read the metadata fixture's own page alongside its metadata
Mearman
committed
e11761f
test(pdf-codec): pin equalCropBoxPdf's own declared CropBox bytes
Mearman
committed
5befed3
test(pdf-codec): pin taggedFormPdf's struct elements and both fixtures' raw MCID spans
Mearman
committed
8d6e9f7
test(pdf-codec): pin parentTreeMissingEntryPdf's own struct element
Mearman
committed
0b31ba5
refactor(pdf-codec): stop computing an unread MediaBox width/height for the rotation matrix
Mearman
committed
a5579e9
refactor(pdf-codec): extract drawGlyphOutline for direct coverage of its own empty-subpaths branch
Mearman
committed
3b40a8c
refactor(pdf-codec): remove drawTextRun's dead glyphAdvance fallback
Mearman
committed
6200be7
test(pdf-codec): pin drawPath's own dotted-stroke width scaling
Mearman
committed
fc18d12
refactor(pdf-codec): remove glyphOutlineSubpaths' redundant segment-count guard
Mearman
committed
ddd8278
test(pdf-codec): pin the /Contents array's own inter-chunk separator byte
Mearman
committed
ad9e16f
refactor(pdf-codec): remove drawTextRun's redundant empty-contours check
Mearman
committed
5c4b0e6
test(pdf-codec): drive cff-bounds.ts's charstring interpreter with hand-built programs
Mearman
committed
be70376
test(pdf-codec): drive glyf-contours.ts's simple-glyph decoding with a fake GlyfTable
Mearman
committed
a7195ab
test(pdf-codec): share the write-side PDF fixture and assert CIDSystemInfo fields
Mearman
committed
6efa048
test(pdf-codec): cover math-font-write's descriptor scaling, W array, and ToUnicode filtering
Mearman
committed
6c00f69
test(pdf-codec): cover writeFormulaContentStream's glyph-run, rule, and stroke items
Mearman
committed
5d9808b
test(pdf-codec): cover parseDestination's view types and the outline cycle guard
Mearman
committed
f907951
refactor(pdf-codec): remove the unreachable duplicate-name check in the /Dests dictionary loop
Mearman
committed
f11976d
test(pdf-codec): pick characters that actually distinguish math-content-write's byte packing
Mearman
committed
cfd3057
test(pdf-codec): cover embedded-font-write's serif flag, subset tag arithmetic, and dict keys
Mearman
committed
775cc4d
refactor(pdf-codec): build utf16BeWithBom's bytes by appending, not by computed offset
Mearman
committed
c64d001
test(pdf-codec): assert every MATH constant field metricsAt exposes
Mearman
committed
1411e8d
refactor(pdf-codec): build jp2-boxes' colour-space lookup inside the function that reads it
Mearman
committed
c9f21a1
refactor(pdf-codec): build the progression-order table inside readCodingDefaults
Mearman
committed
c7f8d9d
refactor(pdf-codec): build the 9-7 lifting constants inside inverse97Filter
Mearman
committed
9f8fafa
refactor(pdf-codec): drop jp2-boxes guards that duplicate a later bounds check
Mearman
committed
20b0129
test(pdf-codec): kill jp2-boxes.ts mutants left over from the JPEG 2000 decoder
Mearman
committed
0cac4f2
refactor(pdf-codec): expose MarkerCursor and drop a redundant code-block-size check
Mearman
committed
64e508d
test(pdf-codec): cover jpeg2000-codestream.ts's header-segment and cursor edge cases
Mearman
committed
0accdc9
refactor(pdf-codec): expose interleave, mirrorIndex and synthesiseLine for testing
Mearman
committed
1c7ea4c
test(pdf-codec): cover jpeg2000-dwt.ts's zero-size, boundary and index-arithmetic cases
Mearman
committed
5431b60
test(pdf-codec): cover remaining jpeg2000-codestream.ts header-segment cases
Mearman
committed
133bfb4
refactor(pdf-codec): drop trimTrailingEoc's own redundant length guard
Mearman
committed
107f8d2
test(pdf-codec): cover jpeg2000-codestream.ts's remaining header-segment boundaries
Mearman
committed
635f3a0
refactor(pdf-codec): drop inverseDwt53Level/97Level's own non-positive-dimension guard
Mearman
committed
aae9e64
test(pdf-codec): cover jpeg2000-dwt.ts's filter loop bounds and remaining edges
Mearman
committed
3df587f
refactor(pdf-codec): extract inverseDwt53Level/97Level's row loop into a testable primitive
Mearman
committed
6394db0
test(pdf-codec): cover times() directly and pin inverse97Filter's F-12/F-13 boundaries
Mearman
committed
df7e6a0
refactor(pdf-codec): drop mirrorIndex's redundant absolute-position round-trip
Mearman
committed
47d3c8b
test(pdf-codec): update mirrorIndex/synthesiseLine tests for the offset-from-i0 signature
Mearman
committed
dbacc23
fix(ci): raise the mutation shard timeout so a cold run under cache eviction can finish
Mearman
committed
3884d72
test(document-operations): raise the unit test timeout for the threshold-boundary tests
Mearman
committed
a6871e8
test(pdf-codec): assert randomBytes actually fills its buffer from the CSPRNG
Mearman
committed
f1f137b
test(pdf-codec): assert Jpeg2000ParseError/UnsupportedError carry their own name
Mearman
committed
ac1546f
test(pdf-codec): cover decodeJpeg2000CodeBlock's unsupported code-block style rejection
Mearman
committed
4b0a0a3
test(pdf-codec): pin readChunks' exact end-of-file chunk-header boundary
Mearman
committed
3403200
test(pdf-codec): pin flushWord's no-op guard for a whitespace-only run
Mearman
committed
a284495
test(pdf-codec): cover every SEMANTIC_SUBTYPES entry in readPageAnnotations
Mearman
committed
3dc8ef7
test(pdf-codec): pin SUBSET_TAG_PATTERN's anchor and exact letter count
Mearman
committed
788358a
test(pdf-codec): cover parseFormat4's header and segment-count guards
Mearman
committed
d7a5c8c
test(pdf-codec): pin decodeUtf16BEString's odd-length trailing-byte boundary
Mearman
committed
aaa00a5
fix(pdf-codec): compute cffIndex's own offSize instead of hardcoding it to 1
Mearman
committed
a172ba1
test(pdf-codec): pin subrBias's switch from the small to the medium bias
Mearman
committed
6b718e9
test(pdf-codec): pin widthOfCode's short-circuit for a monospace face
Mearman
committed
cced11f
test(pdf-codec): key the vendored-face cache by its own base64 constant
Mearman
committed
ecfe53b
fix(pdf-codec): scope font-style's subset-tag pattern and suffix list to their one caller
Mearman
committed
a8f5082
test(pdf-codec): cover every ToUnicode CMap error and boundary path
Mearman
committed
06052b4
fix(pdf-codec): scope annotation subtype sets to readPageAnnotations and cover every branch
Mearman
committed
002b28d
test(pdf-codec): verify assemblePdf's own byte structure directly
Mearman
committed
1b0677a
fix(pdf-codec): stop buildGsubTable racing a markFilteringSet write against its own subtable write
Mearman
committed
2a05673
test(pdf-codec): exercise widthOfCode's missing-AFM-width guard directly
Mearman
committed
166fb5b
test(pdf-codec): cover cffIndex's offSize boundaries and the two sfnt/CFF-table guards
Mearman
committed
a7d10eb
test(pdf-codec): cover format 12 cmap subtables and the subtable-preference ranking
Mearman
committed
979b70f
test(pdf-codec): drive cff-bounds's interpreter through its untested operators
Mearman
committed
5992ad3
test(pdf-codec): cover CFF charset/encoding formats 1/2 and Type 1's PFB form
Mearman
committed
218f49c
test(pdf-codec): draw after each interpreter-limit boundary to make success observable
Mearman
committed
84eb6ed
refactor(pdf-codec): drop widthForWidthsArray's dead zero-width branch
Mearman
committed
96456d7
test(pdf-codec): cover Info dict metadata, font flags, JPEG colour space, and embedded formulas
Mearman
committed
ce527f2
test(pdf-codec): cover every internal-link destination view type
Mearman
committed
4ccf43f
test(pdf-codec): cover rmoveto/hmoveto/vmoveto width-shift and cubic-axis extrema
Mearman
committed
be059d7
test(pdf-codec): cover endchar's own bare-width and width-plus-seac arities
Mearman
committed
6fb0187
test(pdf-codec): pin dict-key names, sort order, and empty-collection boundaries
Mearman
committed
9ea90a9
test(pdf-codec): pin passthrough image headers and destination-lookup-by-name
Mearman
committed
a1dad92
test(pdf-codec): cover outline dict keys, attachment Desc, and AcroForm /FT and /Ff
Mearman
committed
3de8fcc
test(pdf-codec): cover a checkbox's own /V export-value derivation
Mearman
committed
0d9126d
test(pdf-codec): cover structure element dict keys and the /Lang attribute
Mearman
committed
34eb19e
fix(pdf-codec): drop requiredRepeatCount's redundant empty-extenders guard
Mearman
committed
89dbeac
fix(pdf-codec): drop xmp's unreachable absent-capturing-group fallback
Mearman
committed
a5cb629
test(pdf-codec): cover SCALED_COMPONENT_OFFSET applied to a component's own placement offset
Mearman
committed
be3d41b
test(pdf-codec): cover loadMathFont's broken-parse guards
Mearman
committed
5eba492
test(pdf-codec): cover readOptionalContent's unresolved-OCG and layer-naming gaps
Mearman
committed
6fead9a
test(pdf-codec): add direct byte-level coverage for the MATH table parser
Mearman
committed
0cc10b8
test(pdf-codec): add direct coverage for decodePdfString and parsePdfDate
Mearman
committed
32f1b4b
test(pdf-raster-cpu): raise the unit suite's test timeout past vitest's 5000ms default
Mearman
committed
a104fad

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