public void BacklogItemActivityCheckTest()
        {
            _backlogItem1.AddActivity(new Activity(_backlogItem1.developer, "update database"));

            _backlogItem1.backlogState.doing();
            _backlogItem1.backlogState.done();

            Assert.IsTrue(_backlogItem1.backlogState is DoingBacklogState);
            Assert.IsFalse(_backlogItem1.checkActiviesState());
        }