MapFeature.GENERAL_PURPOSE,
                CollectionFeature.KNOWN_ORDER)
            .createTestSuite());
    suite.addTestSuite(EnumBiMapTest.class);
    return suite;
  }

  public void testCreate() {
    EnumBiMap<Currency, Country> bimap = EnumBiMap.create(Currency.class, Country.class);
    assertTrue(bimap.isEmpty());
    assertEquals("{}", bimap.toString());
    assertEquals(HashBiMap.create(), bimap);

  }

  public void testKeysToString_ordering() {
    Multimap<String, Integer> multimap = initializeMultimap5();
    assertEquals("[foo x 2, bar x 2, cow]", multimap.keys().toString());
  }

  public void testCreate() {
    LinkedHashMultimap<String, Integer> multimap = LinkedHashMultimap.create();
    multimap.put("foo", 1);
    multimap.put("bar", 2);
    multimap.put("foo", 3);