public void ReturnMountainBackPackObjectFor2Times()
        {
            //Arrange
            BackPack mountainBackPack1 = _backPackFactory.GetBackPack("mountain");
            BackPack mountainBackPack2 = _backPackFactory.GetBackPack("mountain");

            //Assert
            Assert.AreEqual(mountainBackPack1.GetHashCode(), mountainBackPack2.GetHashCode());
        }
        public void ReturnCityBackPackObjectFor2Times()
        {
            //Arrange
            BackPack cityBackPack1 = _backPackFactory.GetBackPack("city");
            BackPack cityBackPack2 = _backPackFactory.GetBackPack("city");

            //Assert
            Assert.AreEqual(cityBackPack1.GetHashCode(), cityBackPack2.GetHashCode());
        }