public async void ByStartTimeEndTime_Not_Exists()
{
var mock = new ServiceMockFacade <IShiftRepository>();
mock.RepositoryMock.Setup(x => x.ByStartTimeEndTime(It.IsAny <TimeSpan>(), It.IsAny <TimeSpan>())).Returns(Task.FromResult <Shift>(null));
var service = new ShiftService(mock.LoggerMock.Object,
mock.RepositoryMock.Object,
mock.ModelValidatorMockFactory.ShiftModelValidatorMock.Object,
mock.BOLMapperMockFactory.BOLShiftMapperMock,
mock.DALMapperMockFactory.DALShiftMapperMock,
mock.BOLMapperMockFactory.BOLEmployeeDepartmentHistoryMapperMock,
mock.DALMapperMockFactory.DALEmployeeDepartmentHistoryMapperMock);
ApiShiftResponseModel response = await service.ByStartTimeEndTime(default(TimeSpan), default(TimeSpan));
response.Should().BeNull();
mock.RepositoryMock.Verify(x => x.ByStartTimeEndTime(It.IsAny <TimeSpan>(), It.IsAny <TimeSpan>()));
}