} catch (NullPointerException optional) {
      }
    }
    assertInvariants(map);
  }

  public void testEntrySet() {
    Map<K, V> map;
    try {
      map = makePopulatedMap();
    } catch (UnsupportedOperationException e) {
      return;
    }
    assertInvariants(map);

    Set<Entry<K, V>> entrySet = map.entrySet();
    K unmappedKey;
    V unmappedValue;

    // From http://code.google.com/p/smhasher/source/browse/trunk/main.cpp
    HashTestUtils.verifyHashFunction(hf, 128, 0x6384BA69);
  }

  public void testInvariants() {
    HashTestUtils.assertInvariants(murmur3_128());
  }

    // https://github.com/aappleby/smhasher/blob/master/src/main.cpp
    HashTestUtils.verifyHashFunction(hf, 32, 0xB0F57EE3);
  }

  public void testInvariants() {
    HashTestUtils.assertInvariants(murmur3_32());
  }

  @SuppressWarnings("deprecation")
  public void testInvalidUnicodeHashString() {
    String str =
        new String(