test/tck/ThreadTest.java

/*
 * Written by members of JCP JSR-166 Expert Group and released to the
 * public domain. Use, modify, and redistribute this code in any way
 * without acknowledgement. Other contributors include Andrew Wright,
 * Jeffrey Hayes, Pat Fischer, 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();
        }
    }
    
    /**
     *
     */
    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());
    }

    /**
     *
     */
    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();
            assertEquals(tg, current.getUncaughtExceptionHandler());
            Thread.setDefaultUncaughtExceptionHandler(eh);
            Thread.setDefaultUncaughtExceptionHandler(null);
            assertEquals(tg, current.getUncaughtExceptionHandler());
        }
        catch(SecurityException ok) {
        }
        assertEquals(null, Thread.getDefaultUncaughtExceptionHandler());
    }
    
    // How to test actually using UEH within junit?

}

Revision:	1.5
Committed:	Sat Sep 20 18:20:08 2003 UTC (20 years, 7 months ago) by dl
Branch:	MAIN
Changes since 1.4:	+6 -0 lines
Log Message:	Documentation scaffolding
#	Content
1	/*
2	* Written by members of JCP JSR-166 Expert Group and released to the
3	* public domain. Use, modify, and redistribute this code in any way
4	* without acknowledgement. Other contributors include Andrew Wright,
5	* Jeffrey Hayes, Pat Fischer, Mike Judd.
6	*/
7
8	import junit.framework.*;
9
10	public class ThreadTest extends JSR166TestCase {
11	public static void main(String[] args) {
12	junit.textui.TestRunner.run(suite());
13	}
14
15	public static Test suite() {
16	return new TestSuite(ThreadTest.class);
17	}
18
19	static class MyHandler implements Thread.UncaughtExceptionHandler {
20	public void uncaughtException(Thread t, Throwable e) {
21	e.printStackTrace();
22	}
23	}
24
25	/**
26	*
27	*/
28	public void testGetAndSetUncaughtExceptionHandler() {
29	// these must be done all at once to avoid state
30	// dependencies across tests
31	Thread current = Thread.currentThread();
32	ThreadGroup tg = current.getThreadGroup();
33	MyHandler eh = new MyHandler();
34	assertEquals(tg, current.getUncaughtExceptionHandler());
35	current.setUncaughtExceptionHandler(eh);
36	assertEquals(eh, current.getUncaughtExceptionHandler());
37	current.setUncaughtExceptionHandler(null);
38	assertEquals(tg, current.getUncaughtExceptionHandler());
39	}
40
41	/**
42	*
43	*/
44	public void testGetAndSetDefaultUncaughtExceptionHandler() {
45	assertEquals(null, Thread.getDefaultUncaughtExceptionHandler());
46	// failure due to securityException is OK.
47	// Would be nice to explicitly test both ways, but cannot yet.
48	try {
49	Thread current = Thread.currentThread();
50	ThreadGroup tg = current.getThreadGroup();
51	MyHandler eh = new MyHandler();
52	assertEquals(tg, current.getUncaughtExceptionHandler());
53	Thread.setDefaultUncaughtExceptionHandler(eh);
54	Thread.setDefaultUncaughtExceptionHandler(null);
55	assertEquals(tg, current.getUncaughtExceptionHandler());
56	}
57	catch(SecurityException ok) {
58	}
59	assertEquals(null, Thread.getDefaultUncaughtExceptionHandler());
60	}
61
62	// How to test actually using UEH within junit?
63
64	}
65