String[] array = new String[] {"a"};
    Set<String[]> set = ImmutableSet.<String[]>of(array);
    assertEquals(singleton(array), set);
  }

  @GwtIncompatible // ImmutableSet.chooseTableSize
  public void testChooseTableSize() {
    assertEquals(8, ImmutableSet.chooseTableSize(3));
    assertEquals(8, ImmutableSet.chooseTableSize(4));

    assertEquals(1 << 29, ImmutableSet.chooseTableSize(1 << 28));