React native testing library how to test async function?

Im trying to test when a user clicks a button and see if the function assign to that button is called. Im having problems because the function is an async function. Is there something wrong with the way Im testing it?

Function I want to test

 const handlerFunction = useCallback(async () => {
    await Storage.deleteKyes()l
    A.reset();
    navigate("Screen");
  }, [navigate]);

return (
        <Button
          testID="btnChangeUser1"
          data-testid="btnChangeUser1"
          onPress={handlerFunction}
          title={ChangeUser}
          titleStyle={[t.fontSansSemiBold]}
        />
)

Testing method

describe("method should be called", () => {
  it("Should activate when user press  button ", async () => {
    const handlerFunction = jest.fn();
    const { getByText } = render(<ReactComponent />);
    const element = getByText("ChangeUser");
    fireEvent.press(element);
    await waitFor(async () => {
      await expect(handlerFunction).toHaveBeenCalled();
    });
  });
});

Error shown

expect(jest.fn()).toHaveBeenCalled()
   Expected number of calls: >= 1
   Received number of calls:    0

I know its an error with the async method, because if I remove the async and the await method everyting works

I tried changing the async calls made but nothing seems to work

Via Active questions tagged javascript - Stack Overflow https://ift.tt/v3fiK9q

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