testing-anti-patterns

To stop unit tests from asserting on mock behavior, apply strict TDD practices and use decision checkpoints that question mock usage before proceeding. This prevents brittle tests by enforcing clear separation of test utilities and mandating dependency understanding.

Mocking without understanding dependencies creates brittle tests because it decouples the test from actual system behavior, leading to false positives. Gate functions prompt developers to analyze dependencies first, ensuring mocks accurately reflect real interactions and preventing test-only methods in production code.

The best way to keep production code free of test-only methods is enforcing strict separation between production logic and test utilities. Applying TDD principles surfaces these anti-patterns early, preventing cleanup methods from polluting production classes during unit test creation.

Yes, you can use TDD practices to identify testing anti-patterns by reviewing the test suite to highlight mock-related issues. Decision checkpoints help evaluate whether existing mocks are appropriate and catch instances where test-only utilities were added to production code.

You should not use mocking in unit tests when you lack a clear understanding of the dependency's actual behavior. Uninformed mocking creates brittle tests and pollutes the codebase, so gate functions prompt you to question mock usage and ensure appropriate separation.