public virtual void testToString()
{
CharArraySet set = CharArraySet.copy(TEST_VERSION_CURRENT, Collections.singleton("test"));
assertEquals("[test]", set.ToString());
set.add("test2");
assertTrue(set.ToString().Contains(", "));
set = CharArraySet.copy(Version.LUCENE_30, Collections.singleton("test"));
assertEquals("[test]", set.ToString());
set.add("test2");
assertTrue(set.ToString().Contains(", "));
}