/*
* 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.
*/
package jsr166;
import junit.framework.*;
public class ThreadTest extends JSR166TestCase {
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();
assertEquals(tg, current.getUncaughtExceptionHandler());
current.setUncaughtExceptionHandler(eh);
assertEquals(eh, current.getUncaughtExceptionHandler());
current.setUncaughtExceptionHandler(null);
assertEquals(tg, current.getUncaughtExceptionHandler());
}
/**
* getDefaultUncaughtExceptionHandler returns value of last
* setDefaultUncaughtExceptionHandler.
*/
public void testGetAndSetDefaultUncaughtExceptionHandler() {
// BEGIN android-remove (when running as cts the RuntimeInit will
// set a default handler)
// assertEquals(null, Thread.getDefaultUncaughtExceptionHandler());
// END android-remove
// failure due to securityException is OK.
// Would be nice to explicitly test both ways, but cannot yet.
try {
Thread current = Thread.currentThread();
ThreadGroup tg = current.getThreadGroup();
MyHandler eh = new MyHandler();
Thread.setDefaultUncaughtExceptionHandler(eh);
assertEquals(eh, Thread.getDefaultUncaughtExceptionHandler());
Thread.setDefaultUncaughtExceptionHandler(null);
}
catch (SecurityException ok) {
}
assertEquals(null, Thread.getDefaultUncaughtExceptionHandler());
}
// How to test actually using UEH within junit?
}