public async Task GetAllByTownIdAsync_ShouldReturnCorrectResult()
{
var context = ApplicationDbContextInMemoryFactory.InitializeContext();
var townRepository = new EfDeletableEntityRepository <Town>(context);
var parkingSlotRepository = new EfDeletableEntityRepository <ParkingSlot>(context);
var parkingsRepository = new EfDeletableEntityRepository <Parking>(context);
var parkingSlotsService = new ParkingSlotsService(parkingSlotRepository, parkingsRepository, townRepository);
var seeder = new DbContextTestsSeeder();
await seeder.SeedParkingsAsync(context);
await seeder.SeedParkingSlotsAsync(context);
var townId = await parkingsRepository.All().Select(p => p.TownId).FirstOrDefaultAsync();
var result = await parkingSlotsService.GetAllByTownIdAsync(townId);
Assert.True(result.Count() == 4, ErrorMessage);
}