How can I use mocking in my integration tests?

How can I use mocking in my integration tests?

Mocking in integration tests allows you to simulate dependencies, making tests faster and more reliable. You can use libraries like Mockito or Jest to create mock objects.

Can you give me an example of how to mock a database call?

Sure! If you're using Jest, you can use jest.mock() to mock your database module. For example:

jest.mock('./database', () => ({
  getUser: jest.fn(() => Promise.resolve({ id: 1, name: 'John' }))
}));

What are the benefits of using mocking in tests?

Mocking helps isolate the unit of work, reduces test execution time, and allows you to simulate various scenarios without needing the actual dependencies.

Are there any downsides to using mocks?

Yes, overusing mocks can lead to tests that are too detached from reality, making them less reliable. It's important to balance between real and mocked dependencies.