unit testing dao with actual postgre db settings

the environment is netbeans 6.5 ide, postgre db, junit for unit testing..

when i try to execute unit tests over postgre, i get the following error:

3196 [main] FATAL org.hibernate.connection.DatasourceConnectionProvider  - Could not find datasource: blshilaltarakci

javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial

        at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:645)

        at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)

....

i think the reason for this is the lack of jndi properties file. when the project is deployed to any server, the server mostly already has a jndi properties file and this is not a problem..  ( i think..) in my case, there is no jndi properties file in classpath, since the (dao) project is not deployed to server in the time of testing.. 

so, i moved back to unit testing using an in memory database..

Edit on 05/11/2009 at 10:27 : Sometimes, the reason the error does not disappear is badly formed named queries..