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
#	User	Rev	Content
1	dl	1.1	/*
2	dl	1.8	* 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	dl	1.1	*/
8
9			import junit.framework.*;
10
11	dl	1.3	public class ThreadTest extends JSR166TestCase {
12	dl	1.1	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	dl	1.5	/**
27	dl	1.6	* getUncaughtExceptionHandler returns ThreadGroup unless set,
28	dl	1.9	* otherwise returning value of last setUncaughtExceptionHandler.
29	dl	1.5	*/
30	dl	1.1	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	dl	1.4
43	dl	1.5	/**
44	dl	1.6	* getDefaultUncaughtExceptionHandler returns value of last
45			* setDefaultUncaughtExceptionHandler.
46	dl	1.5	*/
47	dl	1.4	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	dl	1.6	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	dl	1.1
65			// How to test actually using UEH within junit?
66
67			}
68