tests8.js

  // ...

    it('does not restart game when ongoing and emits end event when user loses', () => {
      const testScheduler = new TestScheduler((actual, expected) => {
        expect(actual).to.deep.equal(expected);
      });

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

      const action$ = new ActionsObservable(
        // Our overly eager user has started the game twice!
        testScheduler.createHotObservable('aa', {
          a: actions.start.click()
        })
      );

      const store = {
        getState: () => ({})
      };
      const getState = sinon.stub(store, 'getState');
      const now = moment();
      [
        // ...
      ].forEach((gameState, i) => getState.onCall(i).returns({ game: gameState }));

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