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
#	User	Rev	Content
1	dl	1.1	/*
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	dl	1.3	public class ThreadTest extends JSR166TestCase {
11	dl	1.1	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	dl	1.5	/**
26			*
27			*/
28	dl	1.1	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	dl	1.4
41	dl	1.5	/**
42			*
43			*/
44	dl	1.4	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	dl	1.1
62			// How to test actually using UEH within junit?
63
64			}
65