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xls-codec: work toward a genuine 100% mutation score - #1263

#1263

Merged

Mearman merged 108 commits into

mainExaDev/documents.js:mainfrom

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

Sep 15, 2026

Conversation Commits108 (108)Checks Files changed

Merged

xls-codec: work toward a genuine 100% mutation score#1263
Mearman merged 108 commits into
mainfrom
feat/100-percent-mutation-xls-codec

Commits

Commits on Sep 15, 2026

test(xls-codec): cover readWorkbookStreams and isXlsFile directly
Mearman
committed
5ee8d80
test(xls-codec): cover layoutMetadataToSummaryInformation's date validation
Mearman
committed
4e60ddd
test(xls-codec): isolate every branch of cellCarriesFormatting/writesCellRecord
Mearman
committed
b915aca
test(xls-codec): cover readEmbeddedObjectPackage's own rejection paths
Mearman
committed
72cea07
test(xls-codec): pin writeSheetComments' record ordering and object ids
Mearman
committed
e5284e6
test(xls-codec): cover decryptWorkbookRecords' FilePass and record-dispatch edges
Mearman
committed
33cf400
fix(xls-codec): use real Color/ContentBorder shapes in written-cells tests
Mearman
committed
5f00a34
test(xls-codec): pin every Ftab entry's name and fixed arity independently
Mearman
committed
fe232d2
test(xls-codec): cover compoundFile's own validation and sector-layout branches directly
Mearman
committed
a8f2362
refactor(xls-codec): compile formula rgce bytes with an explicit worklist, not recursion
Mearman
committed
1a92e95
test(xls-codec): cover compileFormulaText's tokenizer, parser, and compiler directly
Mearman
committed
9e34a25
refactor(xls-codec): replace unreachable map-lookup guards with exhaustive switches
Mearman
committed
b27e432
test(xls-codec): cover conditional-format boolean flags and gradient bytes directly
Mearman
committed
2b9bed4
test(xls-codec): assert conditional-format and cell fixtures with toStrictEqual
Mearman
committed
a633961
test(xls-codec): cover data-validation error paths and grid boundaries directly
Mearman
committed
d9c5a16
test(xls-codec): cover globals-writer records this package's own reader ignores
Mearman
committed
f2e275d
test(xls-codec): cover sheet-writer grid, merge, and formula cached-value gaps
Mearman
committed
9183473
refactor(xls-codec): filter written cells once per workbook-wide scan pass
Mearman
committed
61bd128
test(xls-codec): cover applyTint's own HSL branches and icv range boundaries
Mearman
committed
8868796
test(xls-codec): cover defined-name length, scope, and grid boundaries
Mearman
committed
a644954
test(xls-codec): assert BiffWriteError's own name and message
Mearman
committed
3d05fef
refactor(xls-codec): drop the RK double's never-written low dword
Mearman
committed
cb76296
test(xls-codec): assert record-writer's oversized-record message
Mearman
committed
c4a159e
test(xls-codec): assert pointsToColumnWidth's exact ceil formula
Mearman
committed
6ce2735
test(xls-codec): assert print-setup's landscape conjunction and tolerance boundary
Mearman
committed
4361ea1
refactor(xls-codec): add a shared malformed-record recovery classifier
Mearman
committed
7fa2041
refactor(xls-codec): route every malformed-record catch through recoverFromFormatError
Mearman
committed
bed81e0
test(xls-codec): cover MD4's padding boundary and drop its dead-code guards
Mearman
committed
76daf2a
test(xls-codec): assert readRecords' own thrown messages and error name
Mearman
committed
80d1bbb
test(xls-codec): distinguish CFEx's fIsCF12 guard from a coincidental undefined
Mearman
committed
56e0e37
test(xls-codec): cover readDv's recoverFromFormatError call against a real bug
Mearman
committed
d50d88b
test(xls-codec): assert data validation ranges accept BIFF8's own grid edge
Mearman
committed
cbbec19
refactor(xls-codec): drop container's redundant CompoundFileFormatError branch
Mearman
committed
c3602d6
test(xls-codec): assert substreams' thrown messages and the BOF length boundary
Mearman
committed
a3d5234
refactor(xls-codec): narrow writeSheetComments to cells proven to carry a comment
Mearman
committed
2607238
test(xls-codec): cover readObjPictFmlaStorageId's own sub-record walk
Mearman
committed
6d981a2
test(xls-codec): assert encryption's disjunctive checks reject each half alone
Mearman
committed
7fdd5c1
refactor(xls-codec): drop embedded-object's redundant safeParse success guard
Mearman
committed
4a24d1b
refactor(xls-codec): drop readObjPictFmlaStorageId's redundant FtCmo skip
Mearman
committed
a978a55
refactor(xls-codec): drop md4's redundant zero offset term
Mearman
committed
5663d4c
test(xls-codec): cover data validation's notBetween operator and isolate its own grid-edge checks
Mearman
committed
becb38b
refactor(xls-codec): drop BlockCursor's genuinely redundant settle passes
Mearman
committed
b26b43d
refactor(xls-codec): drop readRichExtendedString's redundant run/phonetic skip guards
Mearman
committed
bfc5bc5
test(xls-codec): pin fontNameBytes' exact write length and the dyHeight/fontName refusal messages
Mearman
committed
2fbc91e
refactor(xls-codec): drop checkedLength's unreachable whole-text embedding branch
Mearman
committed
6400356
test(xls-codec): isolate every earlier guard and array-class Ptg in readLbl/parsePrintAreas
Mearman
committed
0822270
refactor(xls-codec): key the phantom leap day's own origin choice off Math.sign, not a threshold
Mearman
committed
6ec04c1
test(xls-codec): pin every Escher framing refusal's exact message and cover firstChild directly
Mearman
committed
f500b22
refactor(xls-codec): drop readSheetShapes' redundant empty-stream check and pib's dead fComplex test
Mearman
committed
a7cf5f2
test(xls-codec): isolate DgContainer's kind check and pib's exact opid from a same-shaped bypass
Mearman
committed
2d7c65e
refactor(xls-codec): drop readCf12's dead error-recovery indirection and CFColor's unreachable skip
Mearman
committed
3658615
refactor(xls-codec): remove ptg-writer's redundant eof push and drop-in unterminated-string check
Mearman
committed
cc219d4
test(xls-codec): isolate the plain-column check's own leading anchor from its trailing one
Mearman
committed
f011e58
refactor(xls-codec): remove xf-colors' dead achromatic shortcut and drop redundant range bounds
Mearman
committed
a679665
refactor(xls-codec): drop resolveIcvColor's redundant palette upper bound
Mearman
committed
dead403
test(xls-codec): give the 65535-comment boundary test an explicit timeout
Mearman
committed
52f886e
refactor(xls-codec): replace strings/string-writer's chunking loops with Array.from
Mearman
committed
61a408b
test(xls-codec): cover test-support/biff's own string and XF-trailer packing
Mearman
committed
4a5bbdc
refactor(xls-codec): restate hslToRgb's piecewise hue curve as one clamp
Mearman
committed
322da7a
refactor(xls-codec): reach genuine 100% mutation coverage on drawing/blips.ts
Mearman
committed
497b7f3
test(xls-codec): add a dedicated test file for the Escher write side
Mearman
committed
e6d5b92
refactor(xls-codec): reach genuine 100% mutation coverage on conditional-format.ts
Mearman
committed
6fdb762
refactor(xls-codec): reach genuine 100% mutation coverage on content.ts
Mearman
committed
534ed01
fix(xls-codec): narrow the FLSNULL dxf test to conditionalFormats' own cellIs shape
Mearman
committed
e883fe1
refactor(xls-codec): close content.ts's remaining survivors, cover sheet-writer.ts boundaries
Mearman
committed
9e4b62b
refactor(xls-codec): reach genuine 100% mutation coverage on biff/ptg.ts
Mearman
committed
104d5d7
test(xls-codec): close ptg.ts's remaining survivors
Mearman
committed
0989200
refactor(xls-codec): drop two Ptg cases already reachable through their own generic fallback
Mearman
committed
136074b
test(xls-codec): close ptg.ts's remaining mutation survivors and no-coverage lines
Mearman
committed
b790ecc
refactor(xls-codec): pass writeFormulaRecords its already-narrowed formula
Mearman
committed
69861d7
test(xls-codec): reach genuine mutation coverage on defined-names.ts
Mearman
committed
88b90df
test(xls-codec): close defined-names.ts's last two mutation survivors
Mearman
committed
cc76a41
test(xls-codec): reach mutation coverage on write.ts's workbook-wide plans
Mearman
committed
148256b
test(xls-codec): close write.ts's remaining mutation survivors
Mearman
committed
7ee9567
refactor(xls-codec): build a cell-Xf signature via JSON.stringify
Mearman
committed
d1c2372
refactor(xls-codec): drop two redundant loop-bound checks in sheet.ts
Mearman
committed
50601b3
test(xls-codec): reach mutation coverage on sheet.ts's record dispatch
Mearman
committed
6b59886
refactor(xls-codec): remove two unobservable sheet.ts mutation surfaces
Mearman
committed
57c43fd
refactor(xls-codec): drop readFormula's own unreachable rgcb branch
Mearman
committed
7cd6be3
refactor(xls-codec): drop readArrayGroup's unreachable rgcb branch and a redundant break
Mearman
committed
b0f1b87
refactor(xls-codec): drop readSheetRecords' own redundant loop bound
Mearman
committed
6142af8
test(xls-codec): reach mutation coverage on globals.ts's SupBook/XTI resolution
Mearman
committed
73a7604
refactor(xls-codec): drop three unobservable globals.ts checks
Mearman
committed
207f50a
test(xls-codec): reach mutation coverage on conditional-format-write.ts
Mearman
committed
a2aa74d
refactor(xls-codec): extract validateRuleCount for a testable exact boundary
Mearman
committed
e67adab
refactor(xls-codec): remove redundant conditional-format write paths
Mearman
committed
1a94ee9
test(xls-codec): cover conditional-format write boundaries and nID assignment
Mearman
committed
8f75ede
refactor(xls-codec): remove redundant drawing-read loop bounds and export testable seams
Mearman
committed
61242e3
test(xls-codec): cover drawing-read geometry, guard isolation, and pairing edges
Mearman
committed
18f7d34
refactor(xls-codec): stop the shape/Obj pairing loop at the first exhausted side
Mearman
committed
7bfaf84
test(xls-codec): use a genuinely valid Package stream in embeddedObjectFromObjRecord's guard tests
Mearman
committed
b49cf56
refactor(xls-codec): resolve a blip's dedup by value, not a re-derived index
Mearman
committed
dd3eb5a
test(xls-codec): cover drawing-write geometry, placement, and record byte layout
Mearman
committed
ce39997
refactor(xls-codec): refuse an invalid base64 character rather than silently skipping it
Mearman
committed
8cc36e9
test(xls-codec): cover Obj record byte layout, sequential ids, and cross-sheet spids
Mearman
committed
bf9a735
refactor(xls-codec): always slice bytesFromBase64's own trailing padding
Mearman
committed
711585c
refactor(xls-codec): drop chart.ts's own dead switch default and pointInRange's redundant edge cases
Mearman
committed
acd2973
test(xls-codec): cover chart series AI dispatch, cache roles, and range resolution
Mearman
committed
4f27b4e
refactor(xls-codec): drop addCacheEntry's own redundant default-case return
Mearman
committed
b75410d
test(xls-codec): cover own-sheet fallback and range boundary edges
Mearman
committed
4b47af6
refactor(xls-codec): remove OwnSheetRange's own unread endRow field
Mearman
committed
a6d41be
refactor(xls-codec): remove cfb.ts's own unreachable checks and self-correcting bounds
Mearman
committed
251b054
test(xls-codec): cover compoundFile's ASCII boundary, name collisions, and raw byte layout
Mearman
committed
d72d5cf
test(xls-codec): isolate cfb.ts's own size-classification and same-name storage edges
Mearman
committed
eac3c0a
refactor(xls-codec): remove cfb.ts's own DIFAT sector count write
Mearman
committed
b704a6e
test(xls-codec): cover storage reuse and header fields no round trip proves
Mearman
committed
e8713c2
chore(xls-codec): raise the mutation break threshold to 100
Mearman
committed
6b00cda
Merge branch 'main' into feat/100-percent-mutation-xls-codec
Mearman
authored
d4db2f4

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