public void AuditoriumService_DeleteAuditoriumByCinemaId_SeatServiceReturnsNull_ReturnsNull()
{
//Arrange
List <Auditorium> auditoriumsModelsList = new List <Auditorium>();
auditoriumsModelsList.Add(_auditorium);
IEnumerable <Auditorium> auditoriums = auditoriumsModelsList;
Task <IEnumerable <Auditorium> > responseTask = Task.FromResult(auditoriums);
int expectedCount = 1;
List <ProjectionDomainModel> projectionsModelsList = new List <ProjectionDomainModel>();
projectionsModelsList.Add(_projectionDomainModel);
IEnumerable <ProjectionDomainModel> projections = projectionsModelsList;
Task <IEnumerable <ProjectionDomainModel> > projectionsResponseTask = Task.FromResult(projections);
IEnumerable <SeatDomainModel> seats = null;
Task <IEnumerable <SeatDomainModel> > seatsResponseTask = Task.FromResult(seats);
AuditoriumService auditoriumService = new AuditoriumService(_mockAuditoriumsRepository.Object, _mockProjectionService.Object, _mockSeatService.Object);
_mockProjectionService.Setup(x => x.DeleteByAuditoriumId(It.IsAny <int>())).Returns(projectionsResponseTask);
_mockSeatService.Setup(x => x.DeleteByAuditoriumId(It.IsAny <int>())).Returns(seatsResponseTask);
_mockAuditoriumsRepository.Setup(x => x.GetByCinemaId(It.IsAny <int>())).Returns(responseTask);
_mockAuditoriumsRepository.Setup(x => x.Delete(It.IsAny <int>())).Returns(_auditorium);
//Act
var result = auditoriumService.DeleteAuditoriumsByCinemaId(_auditorium.CinemaId).ConfigureAwait(false).GetAwaiter().GetResult();
//Assert
Assert.IsNull(result);
}