The Lucene Test Framework is used by Lucene as the basis for its tests. The framework can also be used for testing third-party code that uses the Lucene API.

Packages 
Package Description
org.apache.lucene.analysis  
org.apache.lucene.index  
org.apache.lucene.queryParser  
org.apache.lucene.search  
org.apache.lucene.store  
org.apache.lucene.util