public async Task ThenAListOfProviderPaymentPriorityItemsWillBeReturned(GetProviderPaymentsPriorityResponse mediatorResponse) { _mockMediator.Setup(x => x.SendAsync(It.IsAny <GetProviderPaymentsPriorityRequest>())).ReturnsAsync(mediatorResponse); var result = await _controller.GetCustomProviderPaymentPriority(1234L) as OkNegotiatedContentResult <IEnumerable <ProviderPaymentPriorityItem> >; result.Should().NotBeNull(); result.Content.FirstOrDefault().PriorityOrder.Should().Be(mediatorResponse.Data.FirstOrDefault().PriorityOrder); }