The floors step piped scripts/mutation-floors.mjs into tee without
pipefail, so it took tee's exit status and a module under its floor could
never fail the run. It now runs under bash with pipefail, as do the other
steps that pipe into tee, and a guard reads every workflow and fails on a
tee pipe without it. The other piped steps were checked: each either
validates what the pipe produced or pipes a command that cannot fail.
The nightly runs set FC_NUM_RUNS, an absolute count that replaced every
property's own: the database backup round trip, which states twelve cases
for its cost, ran a hundred times against a timeout sized for twelve.
FC_RUNS_FACTOR now multiplies each property's count (five for the unit
suite, four for integration), propertyTimeout grows a test's timeout by
the same factor, and the backup round trip uses it.
Stryker runs against encryption at rest, medication compliance, the rollups,
source ranking, unit conversion and backup validation, with the unit tests
that live next to them (vitest.mutation.config.mts). It is too slow for a
pull request and runs nightly and on demand (.github/workflows/mutation.yml).
scripts/mutation-floors.mjs reads the JSON report and fails when a module
scores below its floor in stryker.floors.json, so one well-tested module
cannot hide a weak one. The floors sit two points below the first measured
scores: crypto 46.9 %, compliance 66.8 %, rollups 41.7 %, source ranking
57.0 %, units 87.4 %, backup validation 25.5 %.
@stryker-mutator/vitest-runner 10.0.0 predates Vitest 5, which names a test
"describe > test" where the runner still built "describe test". Every test
inside a describe block was filtered out of the mutant runs, so nearly every
mutant survived (5.5 % across the set). A pnpm patch builds the name the way
Vitest 5 does; the Docker dependency stage copies the patches directory,
which the frozen install needs.
Marc-André Bombeck