JU
JUnit 5
Used in 194 java projects (avg ★285)
Details
Language / Topic
JavaCategory
Testing
Rules
balanced
- In Java: Use `@Test` for test methods with descriptive, backtick-quoted names like `should handle null input`.
- Mock all dependencies to isolate the unit under test and avoid testing multiple classes.
- Prefer inline initialization of test data over `@BeforeEach`.
- Define constants like test addresses in a private companion object.
- In Java: Limit `@BeforeEach` to shared setup such as test dispatchers or resettable state to reduce test interdependence.
- Use data class `.copy()` to efficiently create variations of test objects without recreation.
- Ensure tests cover failure states with descriptive error expectations.
- Structure tests to mimic real usage while maintaining strict isolation.