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.

模拟存储和网络故障以进行弹性测试。提供断路器状态机、带回退的重试策略和队列保留断言。 来源：apankov1/quality-engineering。