public void MergeEqualsTest()
        {
            var actual   = ArrayMergeHelper.Merge(new long[] { 1, 2, 3 }, new long[] { 3, 2, 1 });
            var expected = new long[] { 1, 2, 3 };

            Assert.IsTrue(ArraysEquals(expected, actual));
        }
        public void MergeDifferentTest()
        {
            var actual   = ArrayMergeHelper.Merge(new long[] { 1, 2, 3 }, new long[] { 4, 5, 6 });
            var expected = new long[] { };

            Assert.IsTrue(ArraysEquals(expected, actual));
        }