@Test
 public void Test4() {
   int[] nums = {1, 3, 4, 3};
   int actual = solution.rob(nums);
   int expected = 6;
   assertEquals(expected, actual);
 }
 @Test
 public void Test6() {
   int[] nums = {1, 2, 3, 4, 5, 6, 7};
   int actual = solution.rob(nums);
   int expected = 15;
   assertEquals(expected, actual);
 }
 @Test
 public void Test1() {
   int[] nums = {1};
   int actual = solution.rob(nums);
   int expected = 1;
   assertEquals(expected, actual);
 }