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Posted to commits@samza.apache.org by "Chris Riccomini (JIRA)" <ji...@apache.org> on 2014/08/19 23:03:19 UTC

[jira] [Created] (SAMZA-387) Unit testing main methods is hard

Chris Riccomini created SAMZA-387:
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             Summary: Unit testing main methods is hard
                 Key: SAMZA-387
                 URL: https://issues.apache.org/jira/browse/SAMZA-387
             Project: Samza
          Issue Type: Bug
          Components: container, yarn
    Affects Versions: 0.8.0
            Reporter: Chris Riccomini


Both SamzaAppMaster and SamzaContainer are hard to unit test. I ran into this as part of SAMZA-382, but it's a recurring problem. The issue is that we have a lot of logic in the main() method that's not mockable.

I think a good solution would be to write a helper class for things like environment variable, JmxServer, etc, and manage them all cleanly in an object that we can test, rather than in the main() method.



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