What are some effective mocking techniques in Jest?

What are some effective mocking techniques in Jest?

Jest provides several mocking techniques, including manual mocks, automatic mocks, and mocking modules. Would you like to know more about a specific technique?

Can you explain manual mocks?

Sure! Manual mocks allow you to define how a module should behave during tests. You create a __mocks__ directory and define the mock implementation there.

How do I create a manual mock for a specific module?

To create a manual mock, create a file in the __mocks__ directory with the same name as the module you want to mock. Then, export the mock implementation from that file.

What about automatic mocks?

Automatic mocks are created by Jest when you call jest.mock('moduleName'). Jest will automatically replace the module with a mock version.