[rules-users] JUnit testing

I am having problems with testing Drools rules; the code is JUnit setup code that is shown below. However, I get a problem that the dialect cannot be opened (see after code). This problem persists whether I tell JUnit to use my core plugin, or if I add every piece of code in the Drools distribution. I added the several lines about Java configuration, and this has made no difference. The crash occurs on the first line invoking Drools routines. I know I am having so much trouble with this code that many readers are tiring of my stupidity, but I just don't get this. The core plugin that I am including in the classpath runs completely well in the standalone RCP. Thanks for any assistance. - Mike @BeforeClass public static void setUp() throws Exception { Reader source; PackageBuilderConfiguration pkgConfig = new PackageBuilderConfiguration(); //CRASH OCCURS IN THIS LINE JavaDialectConfiguration javaDialectConf = (JavaDialectConfiguration) pkgConfig.getDialectConfiguration("java"); javaDialectConf.setCompiler(JavaDialectConfiguration.ECLIPSE); final PackageBuilder builder = new PackageBuilder(pkgConfig); //IF PREVIOUS THREE LINES DELETED SAME CRASH OCCURS HERE boolean exists = (new File("rules/GlucoseDroolRules00.drl")).exists(); if (exists) { builder.addPackageFromDrl(new FileReader( "rules/GlucoseDroolRules00.drl")); System.out.println("Found the file!"); } else { System.out.println("Cannot locate the file - will try as resource"); source = new InputStreamReader(AllDroolsRulesTests.class .getResourceAsStream("rules/GlucoseDroolRules00.drl")); builder.addPackageFromDrl(source); } if (builder.hasErrors()) { System.out.println(builder.getErrors().toString()); } Package pkg = builder.getPackage(); ruleBase = RuleBaseFactory.newRuleBase(); ruleBase.addPackage(pkg); } org.drools.RuntimeDroolsException: Unable to load dialect 'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java' at org .drools .compiler .PackageBuilderConfiguration .addDialect(PackageBuilderConfiguration.java:152) at org .drools .compiler .PackageBuilderConfiguration .buildDialectConfigurationMap(PackageBuilderConfiguration.java:140) at org .drools .compiler .PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:117) at org .drools .compiler .PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:94) at droolsRules.tests.AllDroolsRulesTests.setUp(AllDroolsRulesTests.java:39) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun .reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: 39) at sun .reflect .DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 25) at java.lang.reflect.Method.invoke(Method.java:585) at org .junit .internal .runners.BeforeAndAfterRunner.invokeMethod(BeforeAndAfterRunner.java:74) at org .junit .internal .runners.BeforeAndAfterRunner.runBefores(BeforeAndAfterRunner.java:50) at org .junit .internal .runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:33) at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52) at org .eclipse .jdt .internal .junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38) at org .eclipse .jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org .eclipse .jdt .internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java: 460) at org .eclipse .jdt .internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java: 673) at org .eclipse .jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java: 386) at org .eclipse .jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java: 196) Caused by: java.lang.NullPointerException at org .drools .compiler .PackageBuilderConfiguration .addDialect(PackageBuilderConfiguration.java:146) ... 18 more