Searching中关于testDelete的代码是什么呀？

Searching中关于testDelete的代码是：

public void testDeleteAfterIndexMerge() 
throws IOException{ 
IndexReader reader= IndexReader.open(dir);
assertEquals(2,reader.maxDoc());
asserEquals(2,reader.numDocs());
reader.delete(1);reader.close();
IndexWriter writer=new IndexWriter(dir,getAnalyzer(),false);
writer.optimize();
writer.close();
reader=IndexReader.open(dir);
asserFalse(reader.hasDeleted(1));
asserFalse(reader.hasDeletions());
asserEquals(1,reader.maxDoc());
assertEquals(1,reader.numDocs());
reader.close();
}