assertEquals(!entrySet.isEmpty(), entrySet.iterator().hasNext());
    assertEntrySetNotContainsString(entrySet);

    boolean supportsValuesHashCode = supportsValuesHashCode(map);
    if (supportsValuesHashCode) {
      int expectedEntrySetHash = 0;
      for (Entry<K, V> entry : entrySet) {
        assertTrue(map.containsKey(entry.getKey()));