public void CalculateCall()
 {
     var calculationService = new Mock<IPriceCalculationService>();
     var viewModel = new PriceCalculationViewModel { PlanType = PlanType.VoicePlan1 };
     calculationService.Setup(x => x.CalculatePrice(It.IsAny<PriceCalculationViewModel>())).Returns(new Price(10));
     var controller = new HomeController(calculationService.Object);
     var result = controller.CalculateCall(viewModel).As<PartialViewResult>();
     result.Should().NotBeNull();
     result.Model.As<Price>().Value.Should().Be(10);
 }