Testing Selectors

// Selector Test
describe('user selectors', () => {
 it('should return all users', () => {
   const state = createUsersState();
   expect(getAllUsers(state)).toMatchSnapshot();
 });
});

// Selector Test - Override the state
describe('user selectors', () => {
   it('should return all users', () => {
     const state = createUsersState();

     state.users.entities['1'].firstName = 'Joe';

     const users = getAllUsers(state);

     expect(users[0]).toMatchSnapshot();
   });
 });