Set<SomeEnum> set = ImmutableSet.of(SomeEnum.A, SomeEnum.B, SomeEnum.C);
    assertEquals(set, newEnumSet(unmodifiableIterable(set), SomeEnum.class));
  }

  public void testNewHashSetEmpty() {
    @SuppressWarnings("UseCollectionConstructor") // test of factory method
    HashSet<Integer> set = newHashSet();
    verifySetContents(set, EMPTY_COLLECTION);
  }