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https://issues.apache.org/jira/browse/MRUNIT-97?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dave Beech updated MRUNIT-97:
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Attachment: MRUNIT-97.patch
Hi. I've created a patch which addresses the NullPointerException problem - it
simply adds an extra stubbed method call on MockMapContextWrapper which returns
an instance of MockInputSplit when getInputSplit() is called.
This could be further extended - maybe you'd want to specify in your test what
the file path / length of the input split should be? At the moment these values
are hardcoded but this could easily be changed.
As for testing DistributedCache, I think this would be more difficult since
these are mostly static methods and cannot be mocked by Mockito. However, I
believe there are other mocking frameworks that can do this (PowerMock for
instance). Has anyone else got experience here?
> Can't use MRunit if Context and DistributedCache class is used in mapreduce
> job
> -------------------------------------------------------------------------------
>
> Key: MRUNIT-97
> URL: https://issues.apache.org/jira/browse/MRUNIT-97
> Project: MRUnit
> Issue Type: Bug
> Affects Versions: 0.8.0
> Reporter: Ajay Srivastava
> Attachments: MRUNIT-97.patch
>
>
> I believe that you can't test input split filename and distributed cache at
> the moment.
> If you could file a JIRA on https://issues.apache.org/jira/browse/MRUNIT, I'm
> sure that someone would look on that sooner or later.
> Jarcec
> On Apr 11, 2012, at 7:53 AM, Ajay Srivastava wrote:
> Hi,
> I am planning to use mrunit in one of the projects and written some test
> cases. These test cases run fine for simple map reduce jobs but give error
> for most of the others.
> For an example, in one of the map reduce job I have following code in setup
> method of Mapper class.
> context.getInputSplit()).getPath();
> I get null pointer exception at above statement. Is there a way that I can
> set this context in test code ? If not, how can this kind of mrjobs be tested.
> Similarly we are using DistributedCache in some of our mr jobs. How can I
> test such jobs? Is there a mockup available for DistributedCache class in
> mrunit.
> Regards,
> Ajay Srivastava
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