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https://issues.apache.org/jira/browse/BUILDR-27?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12563415#action_12563415
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Assaf Arkin commented on BUILDR-27:
-----------------------------------

With a variant of this fix in SVN, I got JRuby to build and run tests on both 
Linux and OS/X.  Can you confirm on your end?

> java_test_frameworks.rb failingto run JUnit on JRuby 
> -----------------------------------------------------
>
>                 Key: BUILDR-27
>                 URL: https://issues.apache.org/jira/browse/BUILDR-27
>             Project: Buildr
>          Issue Type: Bug
>          Components: JRuby, Test frameworks
>    Affects Versions: 1.3
>            Reporter: Victor Hugo Borja
>            Assignee: Assaf Arkin
>             Fix For: 1.3
>
>         Attachments: 
> 0001-Modified-Java.load-to-add-jars-to-systemClassLoader.patch
>
>
> Assaf, does jruby -S spec spec/java_test_frameworks.rb goes green for you? 
> java_test_frameworks.rb was failing for me when running with JRuby, printing 
> the following stacktrace for each spec example:
> org.apache.tools.ant.BuildException: Errors while applying transformations: 
> Fatal error during transformation
> AggregateTransformer.java:266:in 
> `org.apache.tools.ant.taskdefs.optional.junit.AggregateTransformer.transform'
> XMLResultAggregator.java:158:in 
> `org.apache.tools.ant.taskdefs.optional.junit.XMLResultAggregator.execute'
> UnknownElement.java:288:in `org.apache.tools.ant.UnknownElement.execute'
> NativeMethodAccessorImpl.java:-2:in 
> `sun.reflect.NativeMethodAccessorImpl.invoke0'
> NativeMethodAccessorImpl.java:39:in 
> `sun.reflect.NativeMethodAccessorImpl.invoke'
> DelegatingMethodAccessorImpl.java:25:in 
> `sun.reflect.DelegatingMethodAccessorImpl.invoke'
> Method.java:597:in `java.lang.reflect.Method.invoke'
> JavaMethod.java:199:in 
> `org.jruby.javasupport.JavaMethod.invokeWithExceptionHandling'
> JavaMethod.java:175:in `org.jruby.javasupport.JavaMethod.invoke'
> JavaClass.java:405:in 
> `org.jruby.javasupport.JavaClass$InstanceMethodInvoker.execute'
> SimpleCallbackMethod.java:70:in 
> `org.jruby.internal.runtime.methods.SimpleCallbackMethod.call'
> CallSite.java:167:in `org.jruby.runtime.CallSite$ICNonBlockCallSite.call'
> I managed to get it working by adding the classpath jars to the 
> systemClassLoader instead of using the jrubyClassLoader, I don't know if this 
> is the best solution, anyway I've attached the patch that makes it work for 
> me.

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