tests6.js

  context('game is paused', () => {
    afterEach(() => {
      Observable.interval.restore();
    });

    it(`interval starts when user starts game and is stopped when end emitted`, () => {
      const testScheduler = new TestScheduler((actual, expected) => {
        expect(actual).to.deep.equal(expected);
      });

      const interval$ = testScheduler.createColdObservable('--a--b--c', {
        a: 0,
        b: 1,
        c: 2
      });
      sinon.stub(Observable, 'interval').returns(interval$);

      const store = {
        getState: () => ({
          game: { /* game is paused */ }
        })
      };

      const action$ = new ActionsObservable(
        testScheduler.createHotObservable('a-----b', {
          a: actions.start.click(),
          b: actions.end()
        })
      );
      const test$ = game(action$, store);
      testScheduler.expectObservable(test$).toBe('a-b--b', {
        a: actions.start()
        b: actions.incrementTime()
      });
      testScheduler.flush();
    });
  });