Github user bzz commented on the issue:
https://github.com/apache/zeppelin/pull/1343
There actually are tests, but we do not have CI profiles with both Python2
and Python3 yet. I think, I will take a look into creating one soon.
Though @felixcheung is right, there are no Integration Tests for Python
interpreter yet, the one that might verify that image appears in the paragraph.
It would be nice to have one, but I guess it's a bit out of scope for this PR.
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