DbUnit testing a PostgreSQL database using JPA without Hibernate or Spring

I'm trying to write a Java EE 6 application using JPA but without using Hibernate or Spring. I used Netbeans to generate the JPA classes, and I created the tables in Postgres, but I am not able to run DbUnit tests in those JPA classes.

I have tried to base my test unit on the example described in this site: http://www.roseindia.net/testingtools/DbUnit/gettingstarted.shtml but it does not work. I keep getting a "java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory" even though I added slf4j to the project libraries in the IDE.

One thing that I find rather odd about the roseindia site example is that it does not seem to have a caller object for the test object created. I am not sure if a caller object is even needed (complete n00b in Java开发者_StackOverflow中文版EE programming, and kind of lost still).

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If you choose to use entities (java classes annotated with @Entity, representing database records), you have to use some JPA provider. You are not restricted to Hibernate, though.

If you're frightened by JPA, your other option is to use plain JDBC. It is far easier to understand, if it's your learning-exercise application, it might be a good idea to try and see how it works. JPA is built on top of JDBC, so when you think you're ready for it, you'll have a solid knowledge base.