// Different lengths.
    a = asList(4, 8, 15, 16, 23);
    b = asList(4, 8, 15, 16, 23, 42);
    assertFalse(elementsEqual(a, b));
    assertFalse(elementsEqual(b, a));
  }

  public void testToString() {
    List<String> list = emptyList();
    assertEquals("[]", Iterables.toString(list));

    list = newArrayList("yam", "bam", "jam", "ham");
    assertEquals("[yam, bam, jam, ham]", Iterables.toString(list));

  }

  private static Enumeration<Integer> enumerate(int... ints) {
    Vector<Integer> vector = new Vector<>(Ints.asList(ints));
    return vector.elements();
  }

  public void testToString() {
    Iterator<String> iterator = Lists.newArrayList("yam", "bam", "jam", "ham").iterator();
    assertEquals("[yam, bam, jam, ham]", Iterators.toString(iterator));
  }

  public void testToStringWithNull() {

  }

  private static Enumeration<Integer> enumerate(int... ints) {
    Vector<Integer> vector = new Vector<>(Ints.asList(ints));
    return vector.elements();
  }

  public void testToString() {
    Iterator<String> iterator = Lists.newArrayList("yam", "bam", "jam", "ham").iterator();
    assertEquals("[yam, bam, jam, ham]", Iterators.toString(iterator));
  }

  public void testToStringWithNull() {

        .addEqualityGroup(TypeToken.of(new TypeCapture<B>() {}.capture()))
        .testEquals();
  }

  // T is used inside to test type variable
  public <T> void testToString() {
    assertEquals(String.class.getName(), new TypeToken<String>() {}.toString());
    assertEquals("T", TypeToken.of(new TypeCapture<T>() {}.capture()).toString());

        .addEqualityGroup(TypeToken.of(new TypeCapture<B>() {}.capture()))
        .testEquals();
  }

  // T is used inside to test type variable
  public <T> void testToString() {
    assertEquals(String.class.getName(), new TypeToken<String>() {}.toString());
    assertEquals("T", TypeToken.of(new TypeCapture<T>() {}.capture()).toString());