test-rules

Use the given-when-then pattern to structure Kotlin unit tests, clearly separating setup, execution, and assertions. This standardized approach improves readability and maintainability by enforcing a logical flow for validating complex business logic.

Write assertions in Kotlin using AssertJ and Kotest to validate behavior effectively rather than just achieving coverage. These libraries provide fluent assertion methods that generate descriptive error messages, ensuring meaningful test quality and precise failure identification.

Name unit tests to clearly describe the validated behavior and organize them using nested classes to group related scenarios. This practice ensures consistency across your test suite and makes complex test structures easier to navigate and understand.

Yes, you can use Mockito-Kotlin and MockK for mocking strategies in unit tests. These libraries help isolate dependencies and simulate external behaviors, ensuring your tests focus purely on validating the specific business logic under test.

You need comprehensive guidelines for writing unit tests when developing complex business logic methods to ensure your tests are well-structured. Following these best practices guarantees consistent quality, appropriate assertions, and coverage of critical scenarios across the suite.