public async void CallAssignmentsByCallId_Not_Exists() { var mock = new ServiceMockFacade <ICallService, ICallRepository>(); mock.RepositoryMock.Setup(x => x.CallAssignmentsByCallId(default(int), It.IsAny <int>(), It.IsAny <int>())).Returns(Task.FromResult <List <CallAssignment> >(new List <CallAssignment>())); var service = new CallService(mock.LoggerMock.Object, mock.MediatorMock.Object, mock.RepositoryMock.Object, mock.ModelValidatorMockFactory.CallModelValidatorMock.Object, mock.DALMapperMockFactory.DALCallMapperMock, mock.DALMapperMockFactory.DALCallAssignmentMapperMock, mock.DALMapperMockFactory.DALNoteMapperMock); List <ApiCallAssignmentServerResponseModel> response = await service.CallAssignmentsByCallId(default(int)); response.Should().BeEmpty(); mock.RepositoryMock.Verify(x => x.CallAssignmentsByCallId(default(int), It.IsAny <int>(), It.IsAny <int>())); }