Github user FRosner commented on the pull request:
https://github.com/apache/spark/pull/9222#issuecomment-150179591
Thanks for the reply.
> Instead of creating a new testsuite in Scala, you can add a new test case
in R, using callJStatic to invoke "dfToCols" on the Scala side.
What would be the advantage of this? I think it is good practice to have
unit tests for all public methods. Using `callJStatic` seems like tackling this
in a roundabout way.
Where can I find the test cases in R?
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