removed meta classes from registry on tearDown to improve mem consumption

git-svn-id: https://svn.codehaus.org/grails/trunk@6805 1cfb16fd-6d17-0410-8ff1-b7e8e1e2867d

Author: graeme

test/persistence/org/codehaus/groovy/grails/orm/hibernate/AbstractGrailsHibernateTests.java

@@ -133,7 +133,13 @@ protected void onSetUp() throws Exception {}
     protected final void tearDown() throws Exception {
         ConfigurationHolder.setConfig(null);
         ApplicationHolder.setApplication(null);
-        GroovySystem.getMetaClassRegistry().setMetaClassCreationHandle(new MetaClassRegistry.MetaClassCreationHandle());
+        MetaClassRegistry metaClassRegistry = GroovySystem.getMetaClassRegistry();
+        Class[] loadedClasses = gcl.getLoadedClasses();
+        for (int i = 0; i < loadedClasses.length; i++) {
+            Class loadedClass = loadedClasses[i];
+            metaClassRegistry.removeMetaClass(loadedClass);
+        }
+        metaClassRegistry.setMetaClassCreationHandle(new MetaClassRegistry.MetaClassCreationHandle());
         PluginManagerHolder.setPluginManager(null);
         if(TransactionSynchronizationManager.hasResource(this.sessionFactory)) {
 		    SessionHolder holder = (SessionHolder) TransactionSynchronizationManager.getResource(this.sessionFactory);