public void GetPriceReturnsRightPrice()
        {
            //Arrange
            RentalPlan rPlan = new RentalPlan {
                Id = 1, Discount = 0.25, Duration = 8
            };
            EquipmentType eType = new EquipmentType {
                Id = 1, TypeName = "SkiBoots", PricePerHour = 50
            };

            ITypesRepository typesRepository = Substitute.For <ITypesRepository>();

            typesRepository.GetEquipmentTypeByEquipmentId(1).Returns(eType);

            IPlansRepository plansRepository = Substitute.For <IPlansRepository>();

            plansRepository.GetRentalPlanById(1).Returns(rPlan);

            IUnitOfWork uow = Substitute.For <IUnitOfWork>();

            uow.PlansRepository.Returns(plansRepository);
            uow.TypesRepository.Returns(typesRepository);

            PricesService pricesService = new PricesService(uow);

            //Act
            var price = pricesService.GetPrice(eType.Id, rPlan.Id);

            //Assert
            price.Should().Be(300);
        }