If you want to use the React testing library in Next.js for writing unit tests you have to make some configuration files for that and install some packages.You can install packages with the below command: Then you need to create some files for jest configs: ./jest.config.js./jest.setup.jsReact router (optional) if you use `useRouter` in your components you have to mock `next/router` and you have to create a mock file for that.
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