public async Task GetRegions_ReturnsRegions()
{
// Arrange
_regionService.Setup(x => x.GetRegions()).ReturnsAsync(GetAdminRegions());
// Act
var result = await _regionController.GetRegions();
var actual = (result as ObjectResult).Value;
// Assert
_regionService.Verify();
Assert.IsInstanceOf <OkObjectResult>(result);
Assert.NotNull(result);
Assert.IsInstanceOf <IEnumerable <RegionForAdministrationDTO> >(actual);
}