get renderHook's result more than once

问题

I got a test which calls renderHook like this:

const { result } = renderHook(() => useMyHook(useDispatch()), wrapper);

It's all good and working, and I can get the return value in result.current..

It seems like I can't call another hook with renderHook.. If I do the exact same thing, then it says that result is already defined. If I change the name to something else, like "res", it says that res is undefined, like it's only working for the specific name "result".

So how can I call it more than one time?

回答1:

Since you should only be testing one hook per test, perhaps you have to unmount the current component first:

const { result, unmount } = renderHook(() => useMyHook(useDispatch()), wrapper);

// ... do what you need with result

unmount();

// call your new hook...
const { result } = renderHook(() => useNewHook(useDispatch()), wrapper);

来源：https://stackoverflow.com/questions/59478806/get-renderhooks-result-more-than-once