Within my module, I have a function called shuffle<T>(a: T[]): T[] that is exported by the random module. While testing two methods in another class that rely on this function, I need to mock it. Here's how I attempted to do so:
jest.mock('./random', async () => {
const { Foo } = await import('./Foo');
return {
...jest.requireActual('./random'),
shuffle: jest.fn().mockReturnValue([new Foo()]),
};
});
Since mock() is hoisted, I had to dynamically import Foo within the mock() using an asynchronous approach. However, when running the actual test, I encountered the error:
TypeError: (0 , random_1.shuffle) is not a functionrandom module were undefined.
Could this be happening because of the async import? If so, what would be the correct way to import Foo to prevent this issue with hoisting?