Strange behavior with JUnit and MVN test in Eclipse

Hi list !

I had a strange situation today that might deserve some more investigation (or at least a warning for those like me...).

Here it goes:

I created a plain service (List/Ordered contribs) via build* method
I created a contribution method to that service (List/Ordered contribs) via contribute* method

userContribution.addInstance("", ...) <<

I wrote a test to start the registry, get an instance of the service, use the service, and check the results.
I run the test and "magically" it worked fine.

The I tried to deploy my artifact via mvn clean ... deploy
This triggered mvn test
And this time I got an exception in building the very same service (see output snippet below).

I am really curios to understand what's going on, and at the same time, I suggest the other "non-black-belts" like me to pay attention to this thing.

Thanks

-- Alessio

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Error invoking service contribution method at.ac.tuwien.dsg.cloud.modules.CloudAppModule.contributeBashUserDataService(OrderedConfiguration): java.lang.AssertionError
2013-11-29 18:42:13,876 [main] ERROR org.apache.tapestry5.ioc.Registry - Operations trace:
2013-11-29 18:42:13,876 [main] ERROR org.apache.tapestry5.ioc.Registry - [ 1] Instantiating service BashUserDataService implementation via at.ac.tuwien.dsg.cloud.modules.CloudAppModule.buildBashUserDataService(Logger, PipelineBuilder, File, List) (at CloudAppModule.java:164)
2013-11-29 18:42:13,876 [main] ERROR org.apache.tapestry5.ioc.Registry - [ 2] Creating plan to invoke public static at.ac.tuwien.dsg.cloud.services.UserDataService at.ac.tuwien.dsg.cloud.modules.CloudAppModule.buildBashUserDataService(org.slf4j.Logger,org.apache.tapestry5.ioc.services.PipelineBuilder,java.io.File,java.util.List)
2013-11-29 18:42:13,876 [main] ERROR org.apache.tapestry5.ioc.Registry - [ 3] Determining injection value for parameter #4 (java.util.List)
2013-11-29 18:42:13,877 [main] ERROR org.apache.tapestry5.ioc.Registry - [ 4] Collecting ordered configuration for service BashUserDataService
2013-11-29 18:42:13,877 [main] ERROR org.apache.tapestry5.ioc.Registry - [ 5] Invoking at.ac.tuwien.dsg.cloud.modules.CloudAppModule.contributeBashUserDataService(OrderedConfiguration) (at CloudAppModule.java:217)
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.993 sec <<< FAILURE!