What are some advanced usage techniques for Jest?
An example of an AI chatbot conversation about advanced techniques in Jest testing.
What are some advanced usage techniques for Jest?
Jest offers several advanced features like mocking, snapshot testing, and custom matchers. What specific area are you interested in?
Can you explain how to use mocking in Jest?
Sure! Mocking in Jest allows you to replace dependencies with mock functions. You can use jest.mock() to mock a module.
How do I create a snapshot test?
To create a snapshot test, use toMatchSnapshot() in your test. Jest will save the rendered output and compare it in future runs.
What are custom matchers and how do I create one?
Custom matchers let you define your own assertions. You can create one using expect.extend() to add new matcher functions.
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