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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* This file is available under and governed by the GNU General Public
* License version 2 only, as published by the Free Software Foundation.
* However, the following notice accompanied the original version of this
* file:
*
* Written by Doug Lea with assistance from members of JCP JSR-166
* Expert Group and released to the public domain, as explained at
* http://creativecommons.org/publicdomain/zero/1.0/
* Other contributors include Andrew Wright, Jeffrey Hayes,
* Pat Fisher, Mike Judd.
*/
import junit.framework.Test;
import junit.framework.TestSuite;
public class ThreadTest extends JSR166TestCase {
public static void main(String[] args) {
main(suite(), args);
}
public static Test suite() {
return new TestSuite(ThreadTest.class);
}
static class MyHandler implements Thread.UncaughtExceptionHandler {
public void uncaughtException(Thread t, Throwable e) {
e.printStackTrace();
}
}
/**
* getUncaughtExceptionHandler returns ThreadGroup unless set,
* otherwise returning value of last setUncaughtExceptionHandler.
*/
public void testGetAndSetUncaughtExceptionHandler() {
// these must be done all at once to avoid state
// dependencies across tests
Thread current = Thread.currentThread();
ThreadGroup tg = current.getThreadGroup();
MyHandler eh = new MyHandler();
assertSame(tg, current.getUncaughtExceptionHandler());
current.setUncaughtExceptionHandler(eh);
try {
assertSame(eh, current.getUncaughtExceptionHandler());
} finally {
current.setUncaughtExceptionHandler(null);
}
assertSame(tg, current.getUncaughtExceptionHandler());
}
/**
* getDefaultUncaughtExceptionHandler returns value of last
* setDefaultUncaughtExceptionHandler.
*/
public void testGetAndSetDefaultUncaughtExceptionHandler() {
assertNull(Thread.getDefaultUncaughtExceptionHandler());
// failure due to SecurityException is OK.
// Would be nice to explicitly test both ways, but cannot yet.
Thread.UncaughtExceptionHandler defaultHandler
= Thread.getDefaultUncaughtExceptionHandler();
MyHandler eh = new MyHandler();
try {
Thread.setDefaultUncaughtExceptionHandler(eh);
try {
assertSame(eh, Thread.getDefaultUncaughtExceptionHandler());
} finally {
Thread.setDefaultUncaughtExceptionHandler(defaultHandler);
}
} catch (SecurityException ok) {
assertNotNull(System.getSecurityManager());
}
assertSame(defaultHandler, Thread.getDefaultUncaughtExceptionHandler());
}
// How to test actually using UEH within junit?
}
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