* supportsRemove}.
   */
  protected MapInterfaceTest(
      boolean allowsNullKeys,
      boolean allowsNullValues,
      boolean supportsPut,
      boolean supportsRemove,
      boolean supportsClear) {
    this(
        allowsNullKeys,
        allowsNullValues,
        supportsPut,
        supportsRemove,
        supportsClear,
        supportsRemove);

  protected SortedMapInterfaceTest(
      boolean allowsNullKeys,
      boolean allowsNullValues,
      boolean supportsPut,
      boolean supportsRemove,
      boolean supportsClear) {
    super(allowsNullKeys, allowsNullValues, supportsPut, supportsRemove, supportsClear);
  }

  @Override
  protected abstract SortedMap<K, V> makeEmptyMap() throws UnsupportedOperationException;

  @Override

   * supportsRemove}.
   */
  protected MapInterfaceTest(
      boolean allowsNullKeys,
      boolean allowsNullValues,
      boolean supportsPut,
      boolean supportsRemove,
      boolean supportsClear) {
    this(
        allowsNullKeys,
        allowsNullValues,
        supportsPut,
        supportsRemove,
        supportsClear,
        supportsRemove);

    }
  }

  protected boolean supportsRemove() {
    return true;
  }

  protected boolean supportsNullValues() {
    return false;
  }

  public void testClear() {
    table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
    if (supportsRemove()) {
      table.clear();
      assertEquals(0, table.size());

    MapTests(
        boolean allowsNullValues,
        boolean supportsPut,
        boolean supportsRemove,
        boolean supportsClear,
        boolean supportsIteratorRemove) {
      super(
          false,
          allowsNullValues,
          supportsPut,
          supportsRemove,
          supportsClear,
          supportsIteratorRemove);
    }

    @Override

    MapTests(
        boolean allowsNullValues,
        boolean supportsPut,
        boolean supportsRemove,
        boolean supportsClear,
        boolean supportsIteratorRemove) {
      super(
          false,
          allowsNullValues,
          supportsPut,
          supportsRemove,
          supportsClear,
          supportsIteratorRemove);
    }

    @Override

    }
  }

  protected boolean supportsRemove() {
    return true;
  }

  protected boolean supportsNullValues() {
    return false;
  }

  public void testClear() {
    table = create("foo", 1, 'a', "bar", 1, 'b', "foo", 3, 'c');
    if (supportsRemove()) {
      table.clear();
      assertEquals(0, table.size());