public void GetTownByNameShouldReturnNull()
        {
            var options = new DbContextOptionsBuilder <FooteoDbContext>()
                          .UseInMemoryDatabase(databaseName: "GetTownByName_Towns_DB")
                          .Options;

            var dbContext = new FooteoDbContext(options);

            var townsService = new TownsService(dbContext);

            townsService.CreateTown("Sofia");

            var town = townsService.GetTownByName <Town>("Burgas");

            Assert.Null(town);
        }