public void CheckSetSetEquals2()
        {
            q = new SetCollection <int>();
            var testSet1 = new int[] { 1, 2, 3, 4, 5 };

            q.AddRange(testSet1);
            Assert.AreEqual(false, q.SetEquals(new int[] { 1, 2, 666, 3, 4, 5 }));
        }
        public void CheckSetSetEquals1()
        {
            q = new SetCollection <int>();
            var testSet1 = new int[] { 1, 2, 3, 4, 5 };

            q.AddRange(testSet1);
            Assert.AreEqual(true, q.SetEquals(new int[] { 1, 2, 3, 4, 5, 4, 3, 2, 1 }));
        }