Jose Martinez commented on SAMZA-681:

Yes, I'm interested in this patch and I think it's valuable for everybody 
trying to implement unit tests for stream tasks.
It would be great if it could be included in the next release, 0.11.0.

Thanks Navina!

> Create a unit test harness to easily test samza tasks
> -----------------------------------------------------
>                 Key: SAMZA-681
>                 URL: https://issues.apache.org/jira/browse/SAMZA-681
>             Project: Samza
>          Issue Type: Test
>          Components: test
>    Affects Versions: 0.9.0
>            Reporter: Luis De Pombo
>         Attachments: SAMZA-381.patch
> We don't have a standardized test framework for unit testing samza tasks. 
> Currently, in order to test the proper functionality of a task we have to 
> bring up the system (kafka) and its dependencies (zk). 
> Goals:
> - The harness should abstract several notions around the system and its 
> partitions, without mocking them, and hold task context and state in memory. 
> - The harness should let you inject several <key,value> pairs that would 
> normally be passed in by the `SystemStream` provided in `tasks.input`. 
> - The same harness should offer an interface to visualize all the 
> corresponding <key,value> pairs collected in the message `Collector`, which 
> are the output of the `process`ed or `window`ed input <key,value> pairs 
> previously injected.

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