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:	1.12
Committed:	Sat Nov 21 02:07:27 2009 UTC (14 years, 5 months ago) by jsr166
Branch:	MAIN
Changes since 1.11:	+5 -5 lines
Log Message:	untabify
#	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	jsr166	1.10	* 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	jsr166	1.12	junit.textui.TestRunner.run(suite());
14	dl	1.1	}
15	jsr166	1.10
16	dl	1.1	public static Test suite() {
17	jsr166	1.12	return new TestSuite(ThreadTest.class);
18	dl	1.1	}
19
20			static class MyHandler implements Thread.UncaughtExceptionHandler {
21			public void uncaughtException(Thread t, Throwable e) {
22			e.printStackTrace();
23			}
24			}
25	jsr166	1.10
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	jsr166	1.12	assertEquals(tg, current.getUncaughtExceptionHandler());
37	dl	1.1	current.setUncaughtExceptionHandler(eh);
38	jsr166	1.12	assertEquals(eh, current.getUncaughtExceptionHandler());
39	dl	1.1	current.setUncaughtExceptionHandler(null);
40	jsr166	1.12	assertEquals(tg, current.getUncaughtExceptionHandler());
41	dl	1.1	}
42	dl	1.4
43	dl	1.5	/**
44	dl	1.6	* getDefaultUncaughtExceptionHandler returns value of last
45	jsr166	1.10	* 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	jsr166	1.11	catch (SecurityException ok) {
60	dl	1.6	}
61			assertEquals(null, Thread.getDefaultUncaughtExceptionHandler());
62			}
63
64	jsr166	1.10
65	dl	1.1	// How to test actually using UEH within junit?
66
67			}