How to testing TextInput keyboardType="numeric"

[tuantvk]

In Login.js
i use text.replace(/[^0-9]/g, '') get number from text set to phone number.

and test changeText phone:

    it('change text is string to phone input ', () => {
      const { getByTestId } = render(<Login />);

      fireEvent.changeText(getByTestId('phone'), 'isstring');

      expect(getByTestId('phone').props.value).toEqual('');
    });

How to improve it use jest or lib other ?