describe('addChat()', ({ test }) => {
  test('with no arguments', ({ same, end}) => {
    const msg = 'should add default chat message';

    const actual = pipe(
      () => reducer(undefined, addChat()),
      // make sure the id and timestamp are there,
      // but we don't care about the values
      state => {
        const chat = state.chatLog[0];
        chat.id = !!chat.id;
        chat.timeStamp = !!chat.timeStamp;
        return state;
      }
    )();

    const expected = Object.assign(createState(), {
      chatLog: [{
        id: true,
        user: 'Anonymous',
        msg: '',
        timeStamp: true
      }]
    });

    same(actual, expected, msg);
    end();
  });


  test('with all arguments', ({ same, end}) => {
    const msg = 'should add correct chat message';

    const actual = reducer(undefined, addChat({
      id: 1,
      user: '@JS_Cheerleader',
      msg: 'Yay!',
      timeStamp: 1472322852682
    }));
    const expected = Object.assign(createState(), {
      chatLog: [{
        id: 1,
        user: '@JS_Cheerleader',
        msg: 'Yay!',
        timeStamp: 1472322852682
      }]
    });

    same(actual, expected, msg);
    end();
  });
});