What is jest.setupFilesAfterEnv?
An example of an AI chatbot conversation about Jest's setupFilesAfterEnv configuration.
Can you explain what jest.setupFilesAfterEnv is used for?
Sure! The setupFilesAfterEnv option in Jest allows you to specify a list of files that will be executed after the test framework is installed in the environment but before the tests are run.
Why would I need to use setupFilesAfterEnv?
It's useful for setting up global configurations, initializing libraries, or adding custom matchers that you want available in all your tests.
Can you give me an example of how to use it?
Absolutely! You can add it to your Jest configuration like this: setupFilesAfterEnv: ['<rootDir>/setupTests.js'], where setupTests.js contains your setup code.
Is there a difference between setupFiles and setupFilesAfterEnv?
Yes, setupFiles runs before the test framework is installed, while setupFilesAfterEnv runs after, allowing you to configure the testing environment.
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