public void TestCampground()
        {
            var park = CreatePark("Mt. Airy");

            park.Id = _db.AddPark(park);

            var campgrounds = _db.GetCampgrounds(park.Id);

            Assert.AreEqual(0, campgrounds.Count);

            var bobGround = CreateCampground("Bob", park.Id);

            bobGround.Id = _db.AddCampground(bobGround);

            var timGround = CreateCampground("Tim", park.Id);

            timGround.Id = _db.AddCampground(timGround);

            campgrounds = _db.GetCampgrounds(park.Id);
            Assert.AreEqual(2, campgrounds.Count);

            foreach (var campground in campgrounds)
            {
                if (campground.Id == bobGround.Id)
                {
                    Assert.AreEqual(bobGround.Name, campground.Name);
                    Assert.AreEqual(bobGround.ParkId, campground.ParkId);
                    Assert.AreEqual(bobGround.OpenFromMonth, campground.OpenFromMonth);
                    Assert.AreEqual(bobGround.OpenToMonth, campground.OpenToMonth);
                    Assert.AreEqual(bobGround.DailyFee, campground.DailyFee);
                }
            }
        }