uniqueEntries.addAll(bimap.entrySet());
    assertEquals(3, uniqueEntries.size());
  }

  @J2ktIncompatible
  @GwtIncompatible // serialization
  public void testSerializable() {
    SerializableTester.reserializeAndAssert(
        EnumBiMap.create(ImmutableMap.of(Currency.DOLLAR, Country.CANADA)));
  }

  @J2ktIncompatible
  @GwtIncompatible // reflection

        .addEqualityGroup(new Stats(5, -5.5, 55.5, -5.56, 5.55))
        .addEqualityGroup(new Stats(5, -5.5, 55.5, -5.55, 5.56))
        .testEquals();
  }

  public void testSerializable() {
    SerializableTester.reserializeAndAssert(MANY_VALUES_STATS_ITERABLE);
  }

  public void testToString() {
    assertThat(EMPTY_STATS_VARARGS.toString()).isEqualTo("Stats{count=0}");