Simplify (junit) testing in cayenne
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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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