Login-logout-test.js

import mockStore from 'redux-mock-store';
import { authenticateUser } from 'actions/sessions';
import { LOGOUT } from 'constants/actions';
import user from 'reducers/user';
import { testUser } from 'jest/mock-objects';

describe('Testing log in authentication', () => {  
  const store = mockStore();
  
  beforeEach(() => {
    store.clearActions();
  });

  it('attempt with correct password succeeds', async () => {
    await store.dispatch(authenticateUser('email@website.com', 'password'));
    expect(store.getActions()).toMatchSnapshot();
  });
});

describe('Testing reducers after LOGOUT action', () => {  
  it('set user to initial state', () => {
    expect(user(testUser, { type: LOGOUT })).toMatchSnapshot();
  });
});