public async Task Quote_has_been_created_for_costumer()
{
var currency = Currency.USDollar;
var productPrice = 12.5;
var productQuantity = 10;
var customerEmail = "*****@*****.**";
var customerUniquenessChecker = Substitute.For <ICustomerUniquenessChecker>();
customerUniquenessChecker.IsUserUnique(customerEmail).Returns(true);
var productMoney = Money.Of(Convert.ToDecimal(productPrice), currency.Code);
var customer = await Customer
.CreateNew(customerEmail, "Customer X", customerUniquenessChecker);
_customers
.GetById(Arg.Any <CustomerId>()).Returns(customer);
var product = Product.CreateNew("Product X", productMoney);
_products.GetById(Arg.Any <ProductId>()).Returns(product);
var handler = new CreateQuoteCommandHandler(_unitOfWork);
var command = new CreateQuoteCommand(customer.Id.Value, new ProductDto(product.Id.Value, productQuantity));
var result = await handler.Handle(command, CancellationToken.None);
await _quotes.Received(1)
.Add(Arg.Is((Quote c) => c.Id.Value == result.Id), Arg.Any <CancellationToken>());
await _customers.Received(1)
.GetById(customer.Id, Arg.Any <CancellationToken>());
await _unitOfWork.Received(1)
.CommitAsync(Arg.Any <CancellationToken>());
result.Should().NotBe(Guid.Empty);
}