Re: Unit testing question

[Sebastien Sahuc]

I'm not surprised to hear your singleton class is being instanciated 
more than once. This is due to the fact the maven create a separate 
classloader for each TestCase it finds and executes. There is two way 
to quickly solve your problem. First would be to aggregate all test 
cases that use the singleton service into a single test suite and have 
maven run only the test suite and rule out all independent test cases. 
The second solution is simply to fork the junit JVM with the property 
maven.junit.fork=true.

Sebastien

On Feb 17, 2004, at 1:16 PM, Marco Tedone wrote:

Please find in the attached picture the architecture of my unit 
testings.
Basically, I created two unit test classes which extend and 
AbstractTest
class which, in turn, extends the JUnit TestCase class.

Both classes retrieve a logger from a class implemented as Singleton
(therefore only one instance should be created). I put a log message 
in the
the constructor to see how many times the constructor gets invoked (and
actually it is invoked twice while it should be invoked only once as 
this is
a singleton).

Attached you will find the unit test classes, logger factory and a PDF 
with
the dump of the unit test activity, showing the message logged from the
Singleton constructor. For simplicity, the diagram doesn't show the 
package
hierarchy, which is available on request.

If you really want to run the application, you may want to download it 
and
the logging framework, following the instructions at the following 
site:

http://www.jemos.org

Best Regards,

Marco

----- Original Message -----
From: "Charles Daniels" <    >
To: "Maven-users" <[EMAIL PROTECTED]>
Sent: Tuesday, February 17, 2004 7:21 AM
Subject: Re: Unit testing question

This sounds more like a problem with the way you have implemented your
unit tests, not a problem
with Maven.  Can you provide more details on how you have written your
test classes?
--- Marco Tedone <[EMAIL PROTECTED]> wrote:
Hi, I build my projects using maven. Maven executes automatically 
junit
tests. I've got more
than one test. Both of those tests use the services offered by a 
class,
which I've implemented
as a Singleton. The class is created after each test class has
completed, thus my singleton is
like as it doesn't exist.

Is there a solution to this problem?

Marco


---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]

---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]


---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]