test2.put(range2, 2);
          test2.put(range3, 3);
          test.putAll(test2);
          verify(model, test);
        }
      }
    }
  }

  public void testPutAndRemove() {
    for (Range<Integer> rangeToPut : RANGES) {
      for (Range<Integer> rangeToRemove : RANGES) {
        Map<Integer, Integer> model = new HashMap<>();
        putModel(model, rangeToPut, 1);