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();
        }
    }
    
    /**
     * getUncaughtExceptionHandler returns ThreadGroup unless set,
     * otherwise returning vlaue 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:	1.7
Committed:	Sat Nov 1 18:37:02 2003 UTC (20 years, 6 months ago) by dl
Branch:	MAIN
CVS Tags:	JSR166_NOV3_FREEZE, JSR166_DEC9_PRE_ES_SUBMIT, JSR166_DEC9_POST_ES_SUBMIT
Changes since 1.6:	+0 -22 lines
Log Message:	Revised and added tests for revised PFT
#	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	* getUncaughtExceptionHandler returns ThreadGroup unless set,
27	* otherwise returning vlaue of last setUncaughtExceptionHandler.
28	*/
29	public void testGetAndSetUncaughtExceptionHandler() {
30	// these must be done all at once to avoid state
31	// dependencies across tests
32	Thread current = Thread.currentThread();
33	ThreadGroup tg = current.getThreadGroup();
34	MyHandler eh = new MyHandler();
35	assertEquals(tg, current.getUncaughtExceptionHandler());
36	current.setUncaughtExceptionHandler(eh);
37	assertEquals(eh, current.getUncaughtExceptionHandler());
38	current.setUncaughtExceptionHandler(null);
39	assertEquals(tg, current.getUncaughtExceptionHandler());
40	}
41
42	/**
43	* getDefaultUncaughtExceptionHandler returns value of last
44	* setDefaultUncaughtExceptionHandler.
45	*/
46	public void testGetAndSetDefaultUncaughtExceptionHandler() {
47	assertEquals(null, Thread.getDefaultUncaughtExceptionHandler());
48	// failure due to securityException is OK.
49	// Would be nice to explicitly test both ways, but cannot yet.
50	try {
51	Thread current = Thread.currentThread();
52	ThreadGroup tg = current.getThreadGroup();
53	MyHandler eh = new MyHandler();
54	Thread.setDefaultUncaughtExceptionHandler(eh);
55	assertEquals(eh, Thread.getDefaultUncaughtExceptionHandler());
56	Thread.setDefaultUncaughtExceptionHandler(null);
57	}
58	catch(SecurityException ok) {
59	}
60	assertEquals(null, Thread.getDefaultUncaughtExceptionHandler());
61	}
62
63
64	// How to test actually using UEH within junit?
65
66	}
67