public void QuickSorting_SwapTest() { QuickSorting sorting = new QuickSorting(); int[] testArray = new[] { 3, 2, 7, 3, 1, 4, 5, 4 }; int i = 2; int j = 5; int old_i = testArray[i]; int old_j = testArray[j]; sorting.Swap(testArray, i, j); Assert.AreEqual(testArray[i], old_j); Assert.AreEqual(testArray[j], old_i); }