public async Task Then_Gets_Validity_From_Mediator( long senderId, long receiverId, int?pledgeApplicationId, GetTransferValidityQueryResult mediatorResult, [Frozen] Mock <IMediator> mockMediator, [Greedy] TransfersController controller) { mockMediator .Setup(mediator => mediator.Send( It.Is <GetTransferValidityQuery>(query => query.SenderId == senderId && query.ReceiverId == receiverId && query.PledgeApplicationId == pledgeApplicationId), It.IsAny <CancellationToken>())) .ReturnsAsync(mediatorResult); var controllerResult = await controller.GetTransferValidity(senderId, receiverId, pledgeApplicationId) as ObjectResult; Assert.IsNotNull(controllerResult); controllerResult.StatusCode.Should().Be((int)HttpStatusCode.OK); var model = controllerResult.Value as GetTransferValidityResponse; Assert.IsNotNull(model); model.IsValid.Should().Be(mediatorResult.IsValid); }