public async void All() { var mock = new ServiceMockFacade <IDeploymentRepository>(); var records = new List <Deployment>(); records.Add(new Deployment()); mock.RepositoryMock.Setup(x => x.All(It.IsAny <int>(), It.IsAny <int>())).Returns(Task.FromResult(records)); var service = new DeploymentService(mock.LoggerMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.DeploymentModelValidatorMock.Object, mock.BOLMapperMockFactory.BOLDeploymentMapperMock, mock.DALMapperMockFactory.DALDeploymentMapperMock, mock.BOLMapperMockFactory.BOLDeploymentRelatedMachineMapperMock, mock.DALMapperMockFactory.DALDeploymentRelatedMachineMapperMock); List <ApiDeploymentResponseModel> response = await service.All(); response.Should().HaveCount(1); mock.RepositoryMock.Verify(x => x.All(It.IsAny <int>(), It.IsAny <int>())); }