public virtual void TestLucene1516Bug()
{
Directory dir1 = new MockRAMDirectory();
TestIndexReaderReopen.CreateIndex(dir1, false);
IndexReader r1 = IndexReader.Open(dir1, false);
r1.IncRef();
IndexReader r2 = r1.Clone(false);
r1.DeleteDocument(5);
r1.DecRef();
r1.IncRef();
r2.Close();
r1.DecRef();
r1.Close();
dir1.Close();
}