fault-injection-testing

Production systems fail. Databases time out. Networks reset. Services degrade. If you only test happy paths, your first encounter with failure will be in production. This skill teaches you to systematically inject faults and verify resilience behavior.

When to use: Testing recovery paths, retry logic, circuit breakers, transaction rollback, queue preservation on failure, any code that interacts with external services.

When not to use: Happy-path-only tests, pure functions, UI components, code with no external dependencies.

模擬儲存和網路故障以進行彈性測試。提供斷路器狀態機、帶回退的重試策略和佇列保留斷言。 來源：apankov1/quality-engineering。