Github user pellmont commented on the issue:
https://github.com/apache/zeppelin/pull/2624
welcome @zjffdu.
Actually I am not a big fan of integration tests, because they are usually
slow and brittle. In my opinion integration tests should be used sparely, the
main functionality should be tested by unit tests.
Also the way I put it now separates the code for making the HTTP call of
the actual features of the livy API.
But if you prefer, I can put everything into BaseLivyInterpreter...---
