Currently Im using functional component with react hooks. But I'm unable to test the useState hook completely. Consider a scenario like, in useEffect hook I'm doing an API call and setting value in...

I want to test a custom hook which was implemented as an helping function for code reuse with other hooks. It's calling useDispatch and useSelector in its implementation, along with saving data in ...

I am having an issue setting up a unit test to determine that a function is called with the correct arguments. useAHook returns function foo which calls function bar. The code looks like this //my...

There is an example on advanced-hooks#async doc. I am confused about how does waitForNextUpdate works. I made two test cases to compare waitForNextUpdate and act() + jest.advanceTimersByTime(). ind...

I have quite complex and still growing application. We use react with hooks, context and other useful stuff. In general, testing react hooks with @testing-library/react-hooks is easy. Just from tim...

I have a custom hook that can have an optional ref passed to it as a property of an object that the hook takes as an argument: export const useShortcuts = ({ ref }) => { useEffect(() => { ...

So I'm pretty new to testing with react. I have a custom hook that I am calling inside a component. I am using the renderHook methods from react-hook-testing-library. I need to test if the methods ...

I created a custom react hook that is supposed to handle all less important api requests, which i don't want to store in the redux state. Hook works fine but I have trouble testing it. My test setu...

Reducer // src/reducers/FooReducer.js export function FooReducer(state, action) { switch (action.type) { case 'update': { return action.newState; } // ... other actions default: throw new Er...

I have the following hook : const useBar = () => { const [myFoo, setFoo] = useState(0); const [myBar, setBar] = useState(0); useEffect(() => { setFoo(myFoo + 1); console.log("setting ...

I'm trying to test the following scenario: A user with an expired token tries to access a resource he is not authorized The resources returns a 401 error The application updates a global state "i...