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From "Marcin Skladaniec (JIRA)" <...@cayenne.apache.org>
Subject [JIRA] Created: (CAY-862) Simplify (junit) testing in cayenne
Date Wed, 05 Sep 2007 01:55:51 GMT
Simplify (junit) testing in cayenne
-----------------------------------

                 Key: CAY-862
                 URL: https://issues.apache.org/cayenne/browse/CAY-862
             Project: Cayenne
          Issue Type: New Feature
          Components: Cayenne Core Library
    Affects Versions: 3.0
         Environment: All
            Reporter: Marcin Skladaniec
            Assignee: Andrus Adamchik


Junit tests are becoming very important once the project reaches a certain point. Cayenne
has dozens of junit tests but writing a junit test for cayenne based application is not easy
at all. 

For me the main trouble is when there is no need to fetch or commit something (like testing
GUI or lifecycle events). I tried to reproduce the tests found in cayenne,but always ended
up with problems with mocking up the context, datachannel, entityResolver,  altering the configuration
to point to different db etc. 

To solve that my idea was that one might specify a package in the CayenneModeler, this package
will than be populated with generated a set of _MockupXXX extends XXX (like _MockupArtist
extends Artist, _MockupPainting extends Painting etc.) and a MockupDataContext etc. There
could be a second set of _MockupEntities for ROP client. 

Another thing is to specify the testing environment with ease. I think there should be also
a possibility to create a "testing" DataNode pointing to a different database than deployment,
and for the DataMap could be related to the real or testing DataNode at the same time. To
choose the testing environment a system param like -Dcayenne.testing=TRUE could be utilised.
I might have missed something here: is there a simply way of having two DataNodes for one
DataMap ?

I think that simplified testcase writing feature would be a great advantage for Cayenne over
any other ORM.

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