My functional component uses the useEffect hook to fetch data from an API on mount. I want to be able to test that the fetched data is displayed correctly. Whi
I'm trying to test a component that has a child component that includes react-intersection-observer but I always get an error I tried to import the library bu
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I've beend creating a node application with typescript and I'm using jest to write unit tests. My issue: I can't really write unit tests simulating invalid fun