No Classloader Found for Plug-in XXX
If you get this error while you are trying to run JUnit plugin tests in Eclipse, you are missing the required JUnit plugins from your environment.
In your run configuration, go into the 'Plug-ins' tab and add (at the very least) the following plugins (discussion):
If this is part of the failure message, you may be having a problem with bug 307076: the bundle you are trying to run actually has unresolved dependencies. Make sure all dependencies are available, have no errors (including files out-of-sync) and available in the classpath.