public async Task AddAdministrator_Null_ReturnsNoContentResult()
        {
            // Arrange
            RegionAdministrationDTO admin = null;
            // Act
            var result = await _regionController.AddAdministrator(admin);

            // Assert
            Assert.IsInstanceOf <NoContentResult>(result);
        }
        public async Task AddAdministrator_CorrectData_ReturnsNoContentResult()
        {
            // Arrange
            RegionAdministrationDTO admin = new RegionAdministrationDTO()
            {
                ID = 2
            };

            _regionAdministrationService.Setup(x => x.AddRegionAdministrator(admin));
            // Act
            var result = await _regionController.AddAdministrator(admin);

            // Assert
            Assert.IsInstanceOf <NoContentResult>(result);
        }