test/tck/ThreadTest.java

/*
 * 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/licenses/publicdomain
 * Other contributors include Andrew Wright, Jeffrey Hayes, 
 * Pat Fisher, Mike Judd. 
 */

import junit.framework.*;

public class ThreadTest extends JSR166TestCase {
    public static void main(String[] args) {
        junit.textui.TestRunner.run(suite());   
    }
    
    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();
        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() {
        assertEquals(null, Thread.getDefaultUncaughtExceptionHandler());
        // 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?

}

Revision:	1.9
Committed:	Mon Dec 29 19:05:40 2003 UTC (20 years, 4 months ago) by dl
Branch:	MAIN
CVS Tags:	JSR166_PFD
Changes since 1.8:	+1 -1 lines
Log Message:	spellcheck
#	Content
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/licenses/publicdomain
5	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	* Pat Fisher, Mike Judd.
7	*/
8
9	import junit.framework.*;
10
11	public class ThreadTest extends JSR166TestCase {
12	public static void main(String[] args) {
13	junit.textui.TestRunner.run(suite());
14	}
15
16	public static Test suite() {
17	return new TestSuite(ThreadTest.class);
18	}
19
20	static class MyHandler implements Thread.UncaughtExceptionHandler {
21	public void uncaughtException(Thread t, Throwable e) {
22	e.printStackTrace();
23	}
24	}
25
26	/**
27	* getUncaughtExceptionHandler returns ThreadGroup unless set,
28	* otherwise returning value of last setUncaughtExceptionHandler.
29	*/
30	public void testGetAndSetUncaughtExceptionHandler() {
31	// these must be done all at once to avoid state
32	// dependencies across tests
33	Thread current = Thread.currentThread();
34	ThreadGroup tg = current.getThreadGroup();
35	MyHandler eh = new MyHandler();
36	assertEquals(tg, current.getUncaughtExceptionHandler());
37	current.setUncaughtExceptionHandler(eh);
38	assertEquals(eh, current.getUncaughtExceptionHandler());
39	current.setUncaughtExceptionHandler(null);
40	assertEquals(tg, current.getUncaughtExceptionHandler());
41	}
42
43	/**
44	* getDefaultUncaughtExceptionHandler returns value of last
45	* setDefaultUncaughtExceptionHandler.
46	*/
47	public void testGetAndSetDefaultUncaughtExceptionHandler() {
48	assertEquals(null, Thread.getDefaultUncaughtExceptionHandler());
49	// failure due to securityException is OK.
50	// Would be nice to explicitly test both ways, but cannot yet.
51	try {
52	Thread current = Thread.currentThread();
53	ThreadGroup tg = current.getThreadGroup();
54	MyHandler eh = new MyHandler();
55	Thread.setDefaultUncaughtExceptionHandler(eh);
56	assertEquals(eh, Thread.getDefaultUncaughtExceptionHandler());
57	Thread.setDefaultUncaughtExceptionHandler(null);
58	}
59	catch(SecurityException ok) {
60	}
61	assertEquals(null, Thread.getDefaultUncaughtExceptionHandler());
62	}
63
64
65	// How to test actually using UEH within junit?
66
67	}
68