resultIterator.next();

    try {
      resultIterator.next();
      fail("Expected NFE");
    } catch (NumberFormatException expected) {
    }
  }

  public void testNullFriendlyTransform() {
    List<@Nullable Integer> input = asList(1, 2, null, 3);
    Iterable<String> result =
        Iterables.transform(
            input,
            new Function<@Nullable Integer, String>() {

    resultIterator.next();

    try {
      resultIterator.next();
      fail("Expected NFE");
    } catch (NumberFormatException expected) {
    }
  }

  public void testNullFriendlyTransform() {
    List<@Nullable Integer> input = asList(1, 2, null, 3);
    Iterable<String> result =
        Iterables.transform(
            input,
            new Function<@Nullable Integer, String>() {

            });

    result.next();
    try {
      result.next();
      fail("Expected NFE");
    } catch (NumberFormatException expected) {
    }
  }

  public void testNullFriendlyTransform() {
    Iterator<Integer> input = asList(1, 2, null, 3).iterator();
    Iterator<String> result =
        Iterators.transform(
            input,
            new Function<@Nullable Integer, String>() {

            });

    result.next();
    try {
      result.next();
      fail("Expected NFE");
    } catch (NumberFormatException expected) {
    }
  }

  public void testNullFriendlyTransform() {
    Iterator<@Nullable Integer> input = Arrays.<@Nullable Integer>asList(1, 2, null, 3).iterator();
    Iterator<String> result =
        Iterators.transform(
            input,