import { useObservableSelectorState } from '../react/useObservableSelectorState';
import { act, renderHook } from '@testing-library/react-hooks';
import expect from 'expect';
import { Subject } from 'rxjs';

describe('useSelector', () => {
  it('should select value from observable state', (complete) => {
    const expected = [
      {
        value: 1,
      },
      {
        value: 2,
      },
    ];
    const subject = new Subject<(typeof expected)[0]>();
    const { result } = renderHook(() => useObservableSelectorState(subject, 'value'));
    expected.forEach((x, i) => {
      act(() => {
        subject.next(x);
      });
      expect(result.current).toBe(expected[i].value);
    });
    complete();
  });
});