vitest_runner
Modern JavaScript/TypeScript testing with Vitest including mocking and coverage.
bun-test
Configure Bun's built-in test runner with Jest-compatible APIs. Use when setting up testing infrastructure, writing unit/integration/snapshot tests, migrating from Jest, or configuring test coverage. 3-10x faster than Jest.
nestjs-testing-expert
NestJS testing mechanics with Jest — building testing modules, mocking providers and repositories, writing service and controller specs, and driving HTTP end-to-end tests through the real application. Use for any test touching a NestJS service, controller, guard, module, or API endpoint, including test-module setup, provider overrides, database fakes, and Supertest request flows.
test-runner
Run a project's tests at the right scope — changed-only, focused, full, type-check, or e2e — then report failures with evidence. Repair and rerun only when fixing failures is explicitly authorized. Detects the test runner in a Bun-managed repo. Use when the user asks to run tests, run the suite, run smoke/e2e tests, type-check, check the build compiles, fix failing tests, or runs /test run.
testing-patterns
TDD workflows, test generation, and coverage strategies with Claude Code. Use when writing tests, implementing TDD, analyzing coverage gaps, or generating quality unit/integration/e2e tests. Covers Jest, Vitest, pytest, and mocking patterns.
