import { Auth } from 'aws-amplify';

import signIn from './shared';

describe('signIn', () => {
  afterEach(() => {
    jest.restoreAllMocks();
  });

  it('invokes the success callback on success', (done) => {
    const mockUser = { username: 'jon', password: 'snow' };

    jest
      .spyOn(Auth, 'signIn')
      .mockImplementation(() => Promise.resolve(mockUser));

    const mockSuccessCb = (user) => {
      expect(user).toBe(mockUser);
      done();
    };

    const mockErrorCb = (err) => {
      done(err);
    };

    signIn('jon', 'snow', mockSuccessCb, mockErrorCb);
  });

  it('invokes the error callback on err', (done) => {
    const mockUser = { username: 'jon', password: 'snow' };

    jest
      .spyOn(Auth, 'signIn')
      .mockImplementation(() => Promise.reject(mockUser));

    const mockSuccessCb = (user) => {
      expect(Auth.signIn).toHaveBeenCalledWith('jon', 'snow');
      expect(user).toBe(mockUser);
      done();
    };

    const mockErrorCb = () => {
      expect(Auth.signIn).toHaveBeenCalledWith('bob', 'tom');
      done();
    };

    signIn('bob', 'tom', mockSuccessCb, mockErrorCb);
  });
});