public async void ByTenantId_Not_Exists() { var mock = new ServiceMockFacade <IDeploymentRepository>(); mock.RepositoryMock.Setup(x => x.ByTenantId(It.IsAny <string>())).Returns(Task.FromResult <List <Deployment> >(new List <Deployment>())); 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.ByTenantId(default(string)); response.Should().BeEmpty(); mock.RepositoryMock.Verify(x => x.ByTenantId(It.IsAny <string>())); }