1 /* 2 * Written by Doug Lea with assistance from members of JCP JSR-166 3 * Expert Group and released to the public domain, as explained at 4 * http://creativecommons.org/publicdomain/zero/1.0/ 5 * Other contributors include Andrew Wright, Jeffrey Hayes, 6 * Pat Fisher, Mike Judd. 7 */ 8 9 package jsr166; 10 11 import junit.framework.*; 12 13 public class ThreadTest extends JSR166TestCase { 14 15 static class MyHandler implements Thread.UncaughtExceptionHandler { 16 public void uncaughtException(Thread t, Throwable e) { 17 e.printStackTrace(); 18 } 19 } 20 21 /** 22 * getUncaughtExceptionHandler returns ThreadGroup unless set, 23 * otherwise returning value of last setUncaughtExceptionHandler. 24 */ 25 public void testGetAndSetUncaughtExceptionHandler() { 26 // these must be done all at once to avoid state 27 // dependencies across tests 28 Thread current = Thread.currentThread(); 29 ThreadGroup tg = current.getThreadGroup(); 30 MyHandler eh = new MyHandler(); 31 assertEquals(tg, current.getUncaughtExceptionHandler()); 32 current.setUncaughtExceptionHandler(eh); 33 assertEquals(eh, current.getUncaughtExceptionHandler()); 34 current.setUncaughtExceptionHandler(null); 35 assertEquals(tg, current.getUncaughtExceptionHandler()); 36 } 37 38 /** 39 * getDefaultUncaughtExceptionHandler returns value of last 40 * setDefaultUncaughtExceptionHandler. 41 */ 42 public void testGetAndSetDefaultUncaughtExceptionHandler() { 43 // BEGIN android-remove (when running as cts the RuntimeInit will 44 // set a default handler) 45 // assertEquals(null, Thread.getDefaultUncaughtExceptionHandler()); 46 // END android-remove 47 48 // failure due to securityException is OK. 49 // Would be nice to explicitly test both ways, but cannot yet. 50 try { 51 Thread current = Thread.currentThread(); 52 ThreadGroup tg = current.getThreadGroup(); 53 MyHandler eh = new MyHandler(); 54 Thread.setDefaultUncaughtExceptionHandler(eh); 55 assertEquals(eh, Thread.getDefaultUncaughtExceptionHandler()); 56 Thread.setDefaultUncaughtExceptionHandler(null); 57 } 58 catch (SecurityException ok) { 59 } 60 assertEquals(null, Thread.getDefaultUncaughtExceptionHandler()); 61 } 62 63 // How to test actually using UEH within junit? 64 65 } 66
