private @Nullable LinkedListMultimap<String, Integer> multimap;

        @Override
        protected ListIterator<Entry<String, Integer>> newTargetIterator() {
          multimap = create();
          multimap.putAll("foo", asList(2, 3));
          multimap.putAll("bar", asList(4, 5));
          multimap.put("foo", 6);

  public void testDoublerExhaustive() {
    new IteratorTester<Integer>(
        3, UNMODIFIABLE, ImmutableList.of(1, 2), IteratorTester.KnownOrder.KNOWN_ORDER) {
      @Override
      protected Iterator<Integer> newTargetIterator() {
        return newDoubler(1, 2);
      }
    }.test();
  }

  public void testDoubler() {
    Iterable<Integer> doubled =
        new Iterable<Integer>() {
          @Override

        private @Nullable LinkedListMultimap<String, Integer> multimap;

        @Override
        protected ListIterator<Entry<String, Integer>> newTargetIterator() {
          multimap = create();
          multimap.putAll("foo", asList(2, 3));
          multimap.putAll("bar", asList(4, 5));
          multimap.put("foo", 6);

      super(master.size() + 3, MODIFIABLE, master, IteratorTester.KnownOrder.KNOWN_ORDER);
      this.master = master;
    }

    @Override
    protected Iterator<T> newTargetIterator() {
      // make copy from master to verify later
      targetList = Lists.newArrayList(master);
      Iterator<T> iterator = targetList.iterator();
      return Iterators.peekingIterator(iterator);
    }

      super(master.size() + 3, MODIFIABLE, master, IteratorTester.KnownOrder.KNOWN_ORDER);
      this.master = master;
    }

    @Override
    protected Iterator<T> newTargetIterator() {
      // make copy from master to verify later
      targetList = Lists.newArrayList(master);
      Iterator<T> iterator = targetList.iterator();
      return Iterators.peekingIterator(iterator);
    }

    Helpers.addAll(list, iteratorStimuli());
    Helpers.addAll(list, listIteratorStimuli());
    return list;
  }

  @Override
  protected abstract ListIterator<E> newTargetIterator();

    Helpers.addAll(list, iteratorStimuli());
    Helpers.addAll(list, listIteratorStimuli());
    return list;
  }

  @Override
  protected abstract ListIterator<E> newTargetIterator();

    new IteratorTester<String>(
        5, UNMODIFIABLE, asList("foo", "bar", "baz"), IteratorTester.KnownOrder.KNOWN_ORDER) {
      @Override
      protected Iterator<String> newTargetIterator() {
        return Lists.asList("foo", new String[] {"bar", "baz"}).iterator();
      }
    }.test();
  }

  private void checkFooBarBazList(List<String> list) {

   * in the given order. Warning: it is not enough to simply pull multiple iterators from the same
   * source Iterable, unless that Iterator is unmodifiable.
   */
  protected abstract I newTargetIterator();

  /**
   * Override this to verify anything after running a list of Stimuli.
   *
   * <p>For example, verify that calls to remove() actually removed the correct elements.
   *

  public void testDoublerExhaustive() {
    new IteratorTester<Integer>(
        3, UNMODIFIABLE, ImmutableList.of(1, 2), IteratorTester.KnownOrder.KNOWN_ORDER) {
      @Override
      protected Iterator<Integer> newTargetIterator() {
        return newDoubler(1, 2);
      }
    }.test();
  }

  public void testDoubler() {
    Iterable<Integer> doubled =
        new Iterable<Integer>() {
          @Override