Github user zjffdu commented on the issue: https://github.com/apache/zeppelin/pull/1462 mockit is for unit test, not for system test. It is just like [AbstractTestRestApi](https://github.com/apache/zeppelin/blob/master/zeppelin-server/src/test/java/org/apache/zeppelin/rest/AbstractTestRestApi.java) where we will launch real spark cluster and ZeppelinServer. Using mockit can not cover lots of cases in real enviroment (e.g. how can I test livy handle comment correctly (considering we are doing some preprocessing), how can I test SparkContext is shared correctly between %livy.spark and %livy.sql) . I know committing jars are not good practise, but these jars won't be available in public repository in short time.
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