The kernel will move from truck to solidcore (#1597). The tests that must
catch regressions across that switch are the ones that don't depend on the
kernel: the reference tests and the robustness goldens. cargo-mutants checks
whether they would notice a change in the kernel's behaviour.
- apps/solidcraft-cli/tests/oracle_cases.rs: the reference tests as a cargo
test (ignored; CI keeps replaying them through cargo xtask oracle), run
over one process per core.
- .cargo/mutants.toml: mutants are judged by that test and the pull-request
sample of the robustness goldens, not by the kernel's own unit tests.
- A mutants profile (ci with incremental builds): about 15 s to rebuild after
a kernel change instead of about 3 minutes.
- docs/mutation-testing.md: how to run it, its cost, two cargo-mutants 27.1
problems and the pilot's results (15% of sampled kernel mutants caught).
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Jackson Oursland