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From "Éric Daigneault" <>
Subject Re: multi-module unit testing
Date Mon, 01 Oct 2007 22:38:20 GMT
Hi Pierre,

The way I solved this for myself was to create a test project and put all
the common test code in it (as normal stuff, not as test stuff) then I used
the test project in all other projects as a dependency.  This way I have
access to the common test stuff.  then to ensure that the extra project
(jar) does not make it in the final package I declared it as test in it`s
dependency scope.

Extending the above principle I usually have two such jars for my projects,
one that is all the common code used in all tests, there I place all the
generic stuff that can be reusable and is not specific.  Another  I will put
all the mocks stubs and other such classes that are specific to the high
level project.  This way all modules will have access to them and I only
code my stuff once.  Great thing about this is that I can then code unit
tests on the test classes.  May sound a bit excessive but when people lives
depend on the code you produce a bit of paranoia actually help to protect
ones sanity.

Of course for the stubs parts, to prevent circular dependencies you may have
to separate the interface for your library from the implementation, which in
time makes for more stable code.  The downside is the multiplication of

I hope this helps

Éric :D.

On 10/1/07, Awaragi <> wrote:
> Hi All,
> i hope that this question was not asked before as I am new to maven and to
> this forum. I am trying to build a multi-module project with three
> modules:
> libraries A and B and application C which depends on A and B. Libraries A
> and B have their unit testing classes which use a setup class to load
> testing resources, setup database connection, etc. This works all fine and
> nice for A and B. Now I am in the process of writting unit tests for
> application module C and i don't want to do copy/paste of the setup
> classes
> of A and B but I cannot find a way to make unit test classes of C to
> depend
> on unit test classes of A and B.
> I thought of moving some of these setup classes to main as a workaround
> but
> then i have to add quite a few test libraries to these modules and to the
> web-inf/lib folder of the final war file. Including a database jdbc driver
> is not acceptable so this workaround is not the way to go.
> Can anyone please help me with this setup?
> Pierre
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