Github user Leemoonsoo commented on the issue:
https://github.com/apache/zeppelin/pull/2195
There can be simpler way to make a test for wrapper function using mockito.
Other way is adding like
[zRunTest](https://github.com/apache/zeppelin/blob/v0.7.1/zeppelin-server/src/test/java/org/apache/zeppelin/rest/ZeppelinSparkClusterTest.java#L319)
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