public async Task CreateCardTokenTest()
{
// Arrange
var args = new CardTokenCreateArguments();
_stripe.Post(
Arg.Is <StripeRequest <CardTokenCreateArguments, Token> >(a => a.UrlPath == "tokens" && a.Model == args),
_cancellationToken).Returns(Task.FromResult(new StripeResponse <Token>()));
// Act
var response = await _client.CreateCardToken(args, _cancellationToken);
// Assert
response.Should().NotBeNull();
}