tools/

Command coverattr says which e2e test is the only one executing which statements: every package's tests are profiled once, then each e2e test in a process of its own, and the two are compared block by block.

Command coverdiff reports changed lines the tests never executed.

Package kindswitch keeps step-kind dispatch where golangci-lint's `exhaustive` can check it.

Command mutants measures mutation testing (sweep, all), keeps the ledger of it (stale, summary, record), and judges e2e (judge).

Package sqlscope finds SQL statements that touch a pipeline-scoped table without naming pipeline_id, or a run-scoped one (run_id REFERENCES runs, no pipeline_id of its own) without naming pipeline_id or reaching runs.

Command stamp ties a commit to the tree `task` last passed on: the sequence takes eight minutes, so a hook that RAN it would be bypassed by the second day, while one that only COMPARES tree hashes costs nothing and proves more — the tree tested is the tree pushed.

Command testshard runs one test package as several processes of a single compiled test binary, so a package of serial tests finishes in the time of its slowest shard; each process keeps its own globals, which is what t.Setenv, t.Chdir, a swapped os.Stdout and a daemon stopped by SIGINT to its own pid all need, and what t.Parallel cannot give them.