Skill Claude CodeCodex
E2E and integration testing for TypeScript/NestJS projects using Jest, supertest, and real infrastructure via Docker (Kafka, PostgreSQL, MongoDB, Redis) with the Given-When-Then pattern. Use whenever the user is working on .e2e-spec.ts files or anything under test/e2e/, or asks to set up, write, review, run, debug, or…
Skill Claude CodeCodex
Unit testing for TypeScript/NestJS projects using Jest, @golevelup/ts-jest (DeepMocked/createMock), and in-memory databases, with AAA structure. Use whenever the user is working on .spec.ts files or asks to set up Jest, write/add tests for a service/usecase/controller/guard/interceptor/pipe/filter, mock dependencies…
Skill Claude CodeCodex
A structured root-cause investigation protocol for complex, ambiguous, or multi-layer technical problems. Activate this skill whenever: a problem has resisted two or more fix attempts; the root cause is unknown or assumed; you are tempted to try a variation of something that already failed; a system has multiple…
Skill Claude CodeCodex
Replace with description of the skill and when Claude should use it.