Mocking in tests
Mocking in unit tests is a technique used to isolate the unit of code being tested by replacing its dependencies with controlled, pre-configured substitutes known as "mocks." This allows the developer to focus on testing the specific functionality of the unit without interference from its dependencies.
The key concepts of mocking include the following:
- Isolation. The primary purpose of mocking is to isolate the unit of code under test. This isolation ensures that the test is focused only on the behavior of the unit itself, rather than on the behavior of its dependencies. By using mocks, you create a controlled environment where you can precisely control the inputs and outputs of the dependencies.
- Substitutes for real objects:
- Mocks are stand-ins for the real objects that the unit under test interacts with. They mimic the behavior of real objects but are configured to return specific values or perform specific actions.
- Fakes are simpler implementations of interfaces...
