tdd

To write TDD tests for NG Component Pattern methods like OnModifyDone, directly invoke the target methods in your tests, reset all potentially interfering state before execution, and verify API signatures using Grep techniques to ensure alignment with source definitions.

The best way to achieve branch coverage for NG components is to create paired tests that explicitly exercise the true and false branches of your conditional logic, ensuring comprehensive code coverage and reducing flaky tests through consistent state management.

NG component tests fail due to inconsistent state when previous test executions interfere with the current baseline; enforcing state reset discipline before running each test ensures a clean environment and reduces flaky test results.

You verify method signatures match source definitions before writing unit tests by applying API verification techniques, specifically using Grep and Read operations to confirm that your target method names and parameters align with the actual source code definitions.

Constraints for testing OnDirtyLayoutWrapperSwap methods include enforcing direct method invocation, avoiding magic numbers by using named constants, and completing a mandatory self-checklist to validate branch coverage and test quality.

You can use standard templates to start writing unit tests for NG Component patterns by referencing the provided test template files, which offer concrete structures for invoking target methods and setting up clean test baselines.