testing-conventions
From the author
How to write a good test: behaviour-describing names (`should_return_error_when_input_is_empty`, `given_when_then`), exact-value assertions over truthiness, snapshot and property-based testing, order-independent and idempotent tests with no shared mutable state, and the anti-patterns (testing mocks, test-only production methods, mocking what you don't own, asserting implementation details). Load when writing or reviewing a test file, naming test cases, choosing assertions, or diagnosing a flaky or always-passing test.
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npx skills add Goldziher/ai-rulez --skill testing-conventions -a claude-code
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