public async Task<StripeResponse<InvoiceItem>> CreateInvoiceItem(InvoiceItemCreateArguments arguments,
     CancellationToken cancellationToken = default(CancellationToken))
 {
     var request = new StripeRequest<InvoiceItemCreateArguments, InvoiceItem>
     {
         UrlPath = Paths.InvoiceItems,
         Model = arguments
     };
     return await _client.Post(request, cancellationToken);
 }
        public async Task CreateInvoiceItemTest()
        {
            // Arrange
            var args = new InvoiceItemCreateArguments();
            _stripe.Post(
                Arg.Is<StripeRequest<InvoiceItemCreateArguments, InvoiceItem>>(a => a.UrlPath == "invoiceitems" && a.Model == args),
                _cancellationToken).Returns(Task.FromResult(new StripeResponse<InvoiceItem>()));

            // Act
            var response = await _client.CreateInvoiceItem(args, _cancellationToken);

            // Assert
            response.Should().NotBeNull();
        }
 public void Init()
 {
     GenFu.GenFu.Configure<InvoiceItemCreateArguments>().Fill(x => x.Amount, () => 30);
     _args = GenFu.GenFu.New<InvoiceItemCreateArguments>();
 }