Tests describing what a consumer reads, written by them, run by us. Owning the tests ourselves means asserting what we intended, and the risk is the gap between…
Eight parallel processes, and one test group that writes to a fixed path on disk. Two runs — parallel for everything and serial for the exceptions — is…
A generated test for an existing class, which is the case model assistance is genuinely good at, with one caveat. The second test asserts that assignment works, which…
Parallel test processes sharing one database, and the transaction-per-test isolation that stops working under concurrency. Loading the schema from a dump rather than migrating is what makes eight…
A handler documented as idempotent since 2022, which was not, and a redelivery that proved it. A docblock claiming idempotency is a claim and not a mechanism, and…