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unit testsedit
In case you only need to execute a unit test, because your implementation can be isolated that well and does not require an up and running elasticsearch cluster, you can use the ElasticsearchTestCase. If you are testing lucene features, use ElasticsearchLuceneTestCase and if you are testing concrete token streams, use the ElasticsearchTokenStreamTestCase class. Those specific classes execute additional checks, which ensure that no resources leaks are happening, after the test has run.