package org.eclipse.ui.tests.concurrency;

import java.lang.reflect.InvocationTargetException;

import junit.framework.TestCase;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.jface.operation.IThreadListener;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.PlatformUI;

/**
 * Makes ModalContext thread crash and hang the IDE
 */
public class ModalContextCrashTest extends TestCase {

	public void testCrash() throws Exception {
		IRunnableWithProgress operation = new CrashingRunnable();
		try{
			PlatformUI.getWorkbench().getActiveWorkbenchWindow().run(true, false, operation);
			fail("Should have an invocation target exception");
		}
		catch (InvocationTargetException e){
			//We should get this
		}
	}

	private static final class CrashingRunnable implements IRunnableWithProgress, IThreadListener {

		public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
		}

		public void threadChange(Thread thread) {
			// only throw the exception in the finally block 
			// of ModalContextThread
			if (Display.findDisplay(thread) != null)
				throw new RuntimeException("Simulated exception during threadChange");
		}
	}

}