Multiset<String> multiset = ImmutableMultiset.copyOf(iterable);
    assertEquals(HashMultiset.create(asList("a", "b", "a")), multiset);
  }

  public void testCopyOf_shortcut_empty() {
    Collection<String> c = ImmutableMultiset.of();
    assertSame(c, ImmutableMultiset.copyOf(c));
  }

  public void testCopyOf_shortcut_singleton() {

    CountingIterable iterable = new CountingIterable();
    Set<String> unused = copyOf(iterable);
    assertEquals(1, iterable.count);
  }

  public void testCopyOf_shortcut_empty() {
    Collection<String> c = of();
    assertEquals(Collections.<String>emptySet(), copyOf(c));
    assertSame(c, copyOf(c));
  }

  public void testCopyOf_shortcut_singleton() {

    CountingIterable iterable = new CountingIterable();
    ImmutableList<String> unused = ImmutableList.copyOf(iterable);
    assertEquals(1, iterable.count);
  }

  public void testCopyOf_shortcut_empty() {
    Collection<String> c = ImmutableList.of();
    assertSame(c, ImmutableList.copyOf(c));
  }

  public void testCopyOf_shortcut_singleton() {
    Collection<String> c = ImmutableList.of("a");

    Multiset<String> multiset = ImmutableMultiset.copyOf(iterable);
    assertEquals(HashMultiset.create(asList("a", "b", "a")), multiset);
  }

  public void testCopyOf_shortcut_empty() {
    Collection<String> c = ImmutableMultiset.of();
    assertSame(c, ImmutableMultiset.copyOf(c));
  }

  public void testCopyOf_shortcut_singleton() {

    CountingIterable iterable = new CountingIterable();
    ImmutableList<String> unused = ImmutableList.copyOf(iterable);
    assertEquals(1, iterable.count);
  }

  public void testCopyOf_shortcut_empty() {
    Collection<String> c = ImmutableList.of();
    assertSame(c, ImmutableList.copyOf(c));
  }

  public void testCopyOf_shortcut_singleton() {
    Collection<String> c = ImmutableList.of("a");