source: class BitmapUtilsTest {
  
      @Test
      public void testRotateFit() {
  
target:         int[] pixels1 = new int[] {
                  1, 2, 3, 4,
                  5, 6, 7, 8,
                  9, 10, 11, 12
          };
  
          int[] pixels2 = BitmapUtils.rotate(pixels1, 4, 3, null);
          int[] pixels3 = BitmapUtils.rotate(pixels2, 3, 4, null);
          int[] pixels4 = BitmapUtils.rotate(pixels3, 4, 3, null);
          int[] pixels5 = BitmapUtils.rotate(pixels4, 3, 4, null);
  
          assertArrayEquals(pixels1, pixels5);
      }
  
  }