how to mock useUser this custom hook using TypeScript-CodePudding

Let's say we have a custom hook named useUser

const useUser = (): IUser => useContext(MiniAppContext).user;

Then it is used in another component

import { useUser } from '@ABC'

const { monitoring } = useUser(); // please note that monitoring is an object having property id

When we run test case, it shows

TypeError: xxxx.useUser is not a function

I used below codes to pass the unit test, but I know that this is good enough. Please let me know what the best practise for this. Thanks in advance.

Update:

jest.mock('@ABC', () => ({
   userUser: () => ({monitoring: {}} as IUser)
}));

CodePudding user response：

An idea would be to create a util function that mocks the custom hook:

import * as useUserHook from '@ABC';

function generateUseUserHook(mock?: IUser): IUser {
    const value: IUser = {
        monitoring: jest.fn(),
        // mock return value (you can use faker)
        ...mock
    };

    jest.spyOn(useUserHook, 'useUser').mockReturnValue(value);

    return value;
}

instead of jest.mock.