What are the best practices for mocking in JUnit?

What are the best practices for mocking in JUnit?

When mocking in JUnit, it's important to use clear and descriptive names for your mocks, keep your tests isolated, and avoid over-mocking. Additionally, prefer using Mockito for its simplicity and flexibility.

Can you explain why over-mocking is a bad practice?

Over-mocking can lead to fragile tests that are tightly coupled to the implementation details. This makes your tests harder to maintain and can result in false positives or negatives.

What tools can I use for mocking in JUnit?

The most popular tool for mocking in JUnit is Mockito. Other options include EasyMock and JMock, but Mockito is generally preferred for its ease of use.

How do I set up Mockito in my JUnit tests?

To set up Mockito, add the Mockito dependency to your project, then use the @Mock annotation to create mock objects and MockitoAnnotations.initMocks(this) in your setup method.