I'm running Hibernate 2.1 and I'm having problems when I run tests using JUnit 3.8.1. I use the UI-test runner and I always get the following exception:

net.sf.hibernate.HibernateException: could not instantiate CacheProvider: net.sf.ehcache.hibernate.Provider
at net.sf.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:115)
at net.sf.hibernate.cfg.Configuration.buildSettings(Configuration.java:1072)
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:718)
at no.nr.pl.server.DatabaseManager.getSession(DatabaseManager.java:76)
(snip)

If I uncheck the "Reload classes every run" box it works fine. I have also tried to modify the excluded.properties inside junit.jar by adding net.sf.ehcache to it, but that doesn't help.

I don't have any setting for caching in hibernate.cfg.xml.

Any ideas on how I can fix this?

Thanks
Per Thomas

add ehcache in your CP

The ehcache.jar is already in the classpath when I start JUnit. I think the problem is the special JUnit classloader. When I disable it, the class is found. After reading the JUnit FAQ the problem should be solved by adding net.sf.ehcache.* to a list of excluded classes. But that doesn't work either.

Any other ideas?

Per Thomas

The problem solved itself by upgrading to Hibernate 2.1.1.

i'm getting this EXACT same problem, only in the latest hibernate version. My junit test is failing (see stack trace below) if i run it from ant, but if i run the test from my IDE or if i uncheck the 'reload classes every run' in junit, it passes. clearly this is some kind of crazy classloader problem. I have the ehchache.jar file in my CP, and i have updated the excluded.properties file in my junit jar. anyone got any other ideas? this is killing me since i know the test passes!

[junit] net.sf.hibernate.HibernateException: could not instantiate CacheProvider: net.sf.ehcache.hibernate.Provider
[junit] at net.sf.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:133)
[junit] at net.sf.hibernate.cfg.Configuration.buildSettings(Configuration.java:1132)
[junit] at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:766)
[junit] at store.HibernateProfileStore.initConfig(HibernateProfileStore.java:38)
[junit] at store.HibernateProfileStore.saveProfile(HibernateProfileStore.java:163)
[junit] at store.test.HibernateProfileStoreTest.testGetAndSave(HibernateProfileStoreTest.java:40)
[junit] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[junit] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[junit] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[junit] at java.lang.reflect.Method.invoke(Method.java:324)
[junit] at junit.framework.TestCase.runTest(TestCase.java:154)
[junit] at junit.framework.TestCase.runBare(TestCase.java:127)
[junit] at junit.framework.TestResult$1.protect(TestResult.java:106)
[junit] at junit.framework.TestResult.runProtected(TestResult.java:124)
[junit] at junit.framework.TestResult.run(TestResult.java:109)
[junit] at junit.framework.TestCase.run(TestCase.java:118)
[junit] at junit.framework.TestSuite.runTest(TestSuite.java:208)
[junit] at junit.framework.TestSuite.run(TestSuite.java:203)
[junit] at junit.swingui.TestRunner$16.run(TestRunner.java:623)
[junit] Caused by: java.lang.ClassCastException
[junit] java.lang.NullPointerException
[junit] at net.sf.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:130)
[junit] ... 18 more
[junit] at store.HibernateProfileStore.saveProfile(HibernateProfileStore.java:186)
[junit] at store.test.HibernateProfileStoreTest.testGetAndSave(HibernateProfileStoreTest.java:40)
[junit] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[junit] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[junit] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[junit] at java.lang.reflect.Method.invoke(Method.java:324)
[junit] at junit.framework.TestCase.runTest(TestCase.java:154)
[junit] at junit.framework.TestCase.runBare(TestCase.java:127)
[junit] at junit.framework.TestResult$1.protect(TestResult.java:106)
[junit] at junit.framework.TestResult.runProtected(TestResult.java:124)
[junit] at junit.framework.TestResult.run(TestResult.java:109)
[junit] at junit.framework.TestCase.run(TestCase.java:118)
[junit] at junit.framework.TestSuite.runTest(TestSuite.java:208)
[junit] at junit.framework.TestSuite.run(TestSuite.java:203)
[junit] at junit.swingui.TestRunner$16.run(TestRunner.java:623)
[junit] Jun 20, 2004 10:22:19 PM net.sf.hibernate.connection.DriverManagerConnectionProvider close
[junit] INFO: cleaning up connection pool: jdbc:oracle:thin:@localhost:1521:test