test: fix mismatched test filenames

[Planeshifter]

Description

Propagating fixes merged to develop between 2026-06-20 10:57 UTC and 2026-06-20 13:03 UTC to sibling packages.

test: filename mismatches

8ca8ea2b4 renamed stats/base/dists/invgamma/logpdf/test/test.nativs.js to test.native.js. The same defect — a test filename that does not match the lib/ module the test requires, left behind by a typo or a copy-paste from a sibling package — survives in four other packages. Each fix is a pure rename; the offending tests already require the correct lib path internally.

Source commit: 8ca8ea2b4 (test: fix filename).

Target packages:

• math/base/special/polygamma: test.atinifnityplus.js → test.atinfinityplus.js
• blas/ext/base/csumkbn: test.zsumkbn.js → test.csumkbn.js and test.zsumkbn.native.js → test.csumkbn.native.js (copy-paste leftover from the sibling zsumkbn package)
• blas/ext/base/dlast-index-of: test.dindex_of.native.js → test.dlast_index_of.native.js
• blas/ext/base/slast-index-of: test.sindex_of.native.js → test.slast_index_of.native.js

Related Issues

None.

Questions

No.

Other

Validation

What was checked:

• Each candidate test file's require( './../lib/<X>.js' ) already resolves to the correctly named lib module that exists on disk, so the rename merely aligns the filename to what the test was always testing.
• Two independent opus validation passes confirmed the defect at every site, that the test body genuinely exercises the lib function under the corrected name (last-index-of semantic, Complex64 vs Complex128 typing, polygamma atinfinityplus math), and that no package.json script, Makefile, README, fixture loader, or other build artifact references the misspelled filename anywhere in the repo.
• An opus adaptation pass confirmed every site is a pure git mv — no package.json script edits, no Makefile updates, no cross-package changes needed.
• A sonnet style-consistency pass confirmed the proposed new filenames match the universal test.<X>.js ↔ lib/<X>.js convention used across math/base/special and blas/ext/base (snake-case lib names retain snake-case in the matching test filename).

What was deliberately excluded:

• math/base/special/powf/test/test.x_is_zero.js testing lib/x_is_zerof.js: the lib file's f suffix is a naming-convention choice rather than a typo, and a maintainer should pick between renaming the test vs. renaming the lib file. Logged as needs-human.
• Naming-style mismatches under array/to-fancy and _tools/** where the test filename intentionally diverges from the lib (logical grouping with . separators, async vs sync complement tests, etc.).
• Bot-generated commits in the window (docs: update related packages sections, docs: update namespace table of contents) — these are produced by stdlib-bot from package metadata, so any propagation belongs in the generator.

The full per-site audit log, including the dropped false positives, is recorded locally for future review.

Checklist

• Read, understood, and followed the contributing guidelines.

AI Assistance

• Yes
• No

If you answered "yes" above, how did you use AI assistance?

• Code generation (e.g., when writing an implementation or fixing a bug)
• Test/benchmark generation
• Documentation (including examples)
• Research and understanding

Disclosure

This pull request was generated by a scheduled Claude Code routine that audits the prior 24 hours of merges to develop for fix patterns and propagates the equivalent fix to sibling packages exhibiting the same defect. Two independent opus correctness passes, one opus adaptation pass, and one sonnet style-consistency pass ran in parallel against the candidate sites; only unanimously approved propagations were committed. A human will audit before promoting the PR out of draft.

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