public async Task GetRefundsTest() { var filter = new RefundListFilter { Charge = "charge-id" }; _stripe.Get( Arg.Is <StripeRequest <RefundListFilter, Pagination <Refund> > >( a => a.UrlPath == "refunds" && a.Model == filter), _cancellationToken).Returns(Task.FromResult(new StripeResponse <Pagination <Refund> >())); var response = await _client.GetRefunds(filter, _cancellationToken); response.Should().NotBeNull(); }