ImmutableMultiset.of("a", "a", "b"))
        .addEqualityGroup(ImmutableMultiset.of("a", "b"))
        .addEqualityGroup(ImmutableMultiset.of("a", "b", "c", "d"))
        .testEquals();
  }

  public void testIterationOrder() {
    Collection<String> c = ImmutableMultiset.of("a", "b", "a");
    assertThat(c).containsExactly("a", "a", "b").inOrder();

    new NullPointerTester()
        .testAllPublicInstanceMethods(
            EnumBiMap.create(ImmutableMap.of(Currency.DOLLAR, Country.CHILE)));
  }

  public void testEquals() {
    new EqualsTester()
        .addEqualityGroup(
            EnumBiMap.create(ImmutableMap.of(Currency.DOLLAR, Country.CANADA)),
            EnumBiMap.create(ImmutableMap.of(Currency.DOLLAR, Country.CANADA)))

  public void testGetCharset_unsupportedCharset() {
    MediaType mediaType = MediaType.parse("text/plain; charset=utf-wtf");
    assertThrows(UnsupportedCharsetException.class, mediaType::charset);
  }

  public void testEquals() {
    new EqualsTester()
        .addEqualityGroup(
            MediaType.create("text", "plain"),
            MediaType.create("TEXT", "PLAIN"),
            MediaType.parse("text/plain"),

    assertEquals(rangeMap.asMapOfRanges(), copy.asMapOfRanges());
  }

  // Overriding testEquals because it seems that we get spurious failures when it things empty
  // should be unequal to empty.
  public void testEquals() {
    TreeRangeMap<Integer, Integer> empty = TreeRangeMap.create();
    TreeRangeMap<Integer, Integer> nonEmpty = TreeRangeMap.create();

  public void testOfInstance_equals() {
    new EqualsTester()
        .addEqualityGroup(Suppliers.ofInstance("foo"), Suppliers.ofInstance("foo"))
        .addEqualityGroup(Suppliers.ofInstance("bar"))
        .testEquals();
  }

  public void testCompose_equals() {
    new EqualsTester()
        .addEqualityGroup(
            Suppliers.compose(Functions.constant(1), Suppliers.ofInstance("foo")),

      new EqualsTester()
          .addEqualityGroup(cache.asMap().keySet(), keys)
          .addEqualityGroup(ImmutableSet.of())
          .testEquals();
      assertEquals(WARMUP_SIZE, keys.size());
      for (int i = WARMUP_MIN; i < WARMUP_MAX; i++) {
        Object key = warmed.get(i - WARMUP_MIN).getKey();
        assertTrue(keys.contains(key));

  public void testOfInstance_equals() {
    new EqualsTester()
        .addEqualityGroup(Suppliers.ofInstance("foo"), Suppliers.ofInstance("foo"))
        .addEqualityGroup(Suppliers.ofInstance("bar"))
        .testEquals();
  }

  public void testCompose_equals() {
    new EqualsTester()
        .addEqualityGroup(
            Suppliers.compose(Functions.constant(1), Suppliers.ofInstance("foo")),

    Set<Entry<String, Integer>> entrySet = map.entrySet();
    assertTrue(entrySet instanceof SynchronizedSet);
    assertSame(mutex, ((SynchronizedSet<?>) entrySet).mutex);
  }

  public void testEquals() {
    boolean unused = create().equals(new HashMap<String, Integer>());
  }

  public void testHashCode() {
    int unused = create().hashCode();
  }

  public void testToString() {

    assertThrows(IllegalArgumentException.class, () -> ContiguousSet.closed(2L, 1L));
    assertThrows(IllegalArgumentException.class, () -> ContiguousSet.closedOpen(2L, 1L));
  }

  public void testEquals() {
    new EqualsTester()
        .addEqualityGroup(
            ContiguousSet.create(Range.closed(1, 3), integers()),
            ContiguousSet.closed(1, 3),

    new EqualsTester()
        .addEqualityGroup(cartesian, equivalent)
        .addEqualityGroup(different1)
        .addEqualityGroup(different2)
        .testEquals();
  }

  public void testCartesianProduct_unrelatedTypes() {
    Set<Integer> x = set(1, 2);
    Set<String> y = set("3", "4");

    List<Object> exp1 = list((Object) 1, "3");