edu.rice.cs.drjava.model
Class MultiThreadedTestCase.ExceptionHandler

java.lang.Object
  edu.rice.cs.drjava.model.MultiThreadedTestCase.ExceptionHandler

All Implemented Interfaces:

Thread.UncaughtExceptionHandler

Enclosing class:

MultiThreadedTestCase

private static class MultiThreadedTestCase.ExceptionHandler
extends Object
implements Thread.UncaughtExceptionHandler

Class that stores exceptions thrown in other threads so they can be rethrown in the main thread. AssertionFailedErrors thrown in other threads do not count as AssertionFailedErrors in the main class, i.e. if an assertion fails in a thread that is not the main thread, the unit test will not fail!

Field Summary

private Throwable	_e Stored throwable, or null if nothing stored.
private Thread	_mainThread Thread that spawns the other threads.
private Thread	_t Stored thread that threw or null if none.
static MultiThreadedTestCase.ExceptionHandler	ONLY Singleton instance.

Constructor Summary

private

MultiThreadedTestCase.ExceptionHandler() Singleton constructor.

Method Summary

boolean	exceptionOccurred() Returns true if an exception has occurred.
Throwable	getException()
Thread	getThread()
void	reset() Reset the stored exception and thread.
void	rethrow() Rethrow the exception, if one was stored.
void	setMainThread(Thread mainThread) Set the thread that spawns the other threads.
void	uncaughtException(Thread t, Throwable e) Gets called if an uncaught exception occurs in a thread.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_e

private volatile Throwable _e

Stored throwable, or null if nothing stored.

_t

private volatile Thread _t

Stored thread that threw or null if none.

_mainThread

private volatile Thread _mainThread

Thread that spawns the other threads.

ONLY

public static final MultiThreadedTestCase.ExceptionHandler ONLY

Singleton instance.

Constructor Detail

MultiThreadedTestCase.ExceptionHandler

private MultiThreadedTestCase.ExceptionHandler()

Singleton constructor.

Method Detail

uncaughtException

public void uncaughtException(Thread t,
                              Throwable e)

Gets called if an uncaught exception occurs in a thread.

Specified by:

uncaughtException in interface Thread.UncaughtExceptionHandler

Parameters:

t - the thread

e - the uncaught exception

reset

public void reset()

Reset the stored exception and thread.

rethrow

public void rethrow()

Rethrow the exception, if one was stored.

exceptionOccurred

public boolean exceptionOccurred()

Returns true if an exception has occurred.

Returns:

true if exception has occurred

getException

public Throwable getException()

getThread

public Thread getThread()

setMainThread

public void setMainThread(Thread mainThread)

Set the thread that spawns the other threads.