public void YourOffers_WhenInValidGetAllParamIsPased_ShouldReturnNull()
{
// Arrange
var autoMapperConfig = new AutoMapperConfig();
autoMapperConfig.Execute(typeof(OffersController).Assembly);
var userServiceMock = new Mock <IUserService>();
var carOffer = new CarOffer();
var carOffersServiceMock = new Mock <ICarOffersService>();
carOffersServiceMock.Setup(x => x.GetAll())
.Returns(() => new List <CarOffer> {
carOffer
}.AsQueryable());
OffersController offersController = new OffersController(carOffersServiceMock.Object, userServiceMock.Object);
// Act & Assert
Assert.Throws <NullReferenceException>(() => offersController.YourOffers());
}