Vitest TDD workflow, test conventions and patterns
npx claudepluginhub fabiensalles/claude-marketplace --plugin vitestACTIVATE when building new features, endpoints, or user stories using TDD with Vitest. ACTIVATE for '/feature-dev', 'TDD', 'test first', 'red-green-refactor', 'iterations' in a TypeScript/NestJS context. Covers: cross-layer TDD iterations (Controller/Domain/Repository), working app at each GREEN, bug-fix-first-test workflow, mocks-hiding-bugs pitfall. DO NOT use for: test writing conventions (see vitest-test-conventions), PHP TDD (see php-tdd-workflow).
ACTIVATE when writing Vitest tests, creating test files, using vi.fn()/vi.mock()/vi.spyOn(), or test factories. ACTIVATE for 'Vitest', 'test convention', 'it.each', 'test double', 'DAMP test', 'spy vs mock'. Covers: DAMP over DRY, AAA pattern, vi.fn()/vi.spyOn()/vi.mock() patterns, spy over mock, what NOT to test, it.each() format selection (template vs object), factory functions, exception testing, NestJS integration test setup, structured assertions. DO NOT use for: TDD workflow/iterations (see vitest-tdd-workflow), PHP/PHPUnit tests (see php-test-conventions).
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