Creating Mocks with Mockito
Use Mockito to create mock objects for dependencies, isolating the unit under test from its collaborators.
Intro to Mockito Mocks
In the previous lesson, we learned about the concept of a mock object. Mocks are special test doubles that let us control the behavior of dependencies.
Now, we'll dive into Mockito, a popular Java mocking framework, to see how easy it is to create these powerful tools for your tests.
Why Create Mocks?
Creating mocks is crucial for effective unit testing:
- Isolation: Mocks allow you to test a single unit of code in isolation, without worrying about its real dependencies.
- Control: You can program mocks to behave exactly as needed for your test scenario, simulating various outcomes.
- Speed: Mocks avoid slow operations like database calls or network requests, making your tests run much faster.
All lessons in this course
- Mocks, Stubs, and Fakes
- Creating Mocks with Mockito
- Verifying Mock Interactions
- Injecting Mocks with @Mock and @InjectMocks