What is mocking in Jest and Mocha?
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What is mocking in Jest and Mocha?
Mocking is a technique used in testing to simulate the behavior of complex objects or functions. In Jest and Mocha, it allows you to isolate the code being tested by replacing dependencies with mock implementations.
How do I create a mock function in Jest?
In Jest, you can create a mock function using jest.fn(). For example: const myMock = jest.fn(); This creates a mock function that you can use in your tests.
Can I use Mocha for mocking as well?
Yes, you can use libraries like Sinon.js with Mocha for mocking. Sinon provides standalone test spies, stubs, and mocks that work well with Mocha.
What are the benefits of using mocks in testing?
Mocks help in isolating tests, improving test performance, and allowing you to simulate various scenarios without relying on actual implementations.
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