test/tck/CancellableTaskTest.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.*;
import java.util.*;
import java.util.concurrent.*;

public class CancellableTaskTest extends JSR166TestCase {
    public static void main(String[] args) {
        junit.textui.TestRunner.run (suite());  
    }
    public static Test suite() {
        return new TestSuite(CancellableTaskTest.class);
    }

    /**
     * Subclass to expose protected methods
     */
    static class PublicCancellableTask extends CancellableTask {
        public PublicCancellableTask() {}
        public PublicCancellableTask(Runnable r) { super(r); }
        public boolean reset() { return super.reset(); }
        public Runnable getRunnable() { return super.getRunnable(); }
        public void setRunnable(Runnable r) { super.setRunnable(r); }
        public void setCancelled() { super.setCancelled(); }
        public void setDone() { super.setDone(); }
    }

    /**
     * creating task with null runnable throws NPE
     */
    public void testConstructor(){
        try {
            CancellableTask task = new CancellableTask(null);
            shouldThrow();
        }
        catch(NullPointerException success) {
        }
    }
    
    /**
     * isDone is true after task is run
     */
    public void testIsDone(){
        CancellableTask task = new CancellableTask(new NoOpRunnable());
        task.run();
        assertTrue(task.isDone());
        assertFalse(task.isCancelled());
    }

    /**
     * Cancelling before running succeeds
     */
    public void testCancelBeforeRun() {
        CancellableTask task = new CancellableTask(new NoOpRunnable());
        assertTrue(task.cancel(false));
        task.run();
        assertTrue(task.isDone());
        assertTrue(task.isCancelled());
    }

    /**
     * reset of a done task succeeds and changes status to not done
     */
    public void testReset(){
        PublicCancellableTask task = new PublicCancellableTask(new NoOpRunnable());
        task.run();
        assertTrue(task.isDone());
        assertTrue(task.reset());
        assertFalse(task.isDone());
    }

    /**
     * Resetting after cancellation fails
     */
    public void testResetAfterCancel() {
        PublicCancellableTask task = new PublicCancellableTask(new NoOpRunnable());
        assertTrue(task.cancel(false));
        task.run();
        assertTrue(task.isDone());
        assertTrue(task.isCancelled());
        assertFalse(task.reset());
    }

    /**
     * Setting the runnable causes it to be used
     */
    public void testSetRunnable() {
        PublicCancellableTask task = new PublicCancellableTask();
        assertNull(task.getRunnable());
        Runnable r = new NoOpRunnable();
        task.setRunnable(r);
        assertEquals(r, task.getRunnable());
        assertTrue(task.cancel(false));
        task.run();
        assertTrue(task.isDone());
        assertTrue(task.isCancelled());
        assertFalse(task.reset());
    }

    /**
     * setDone of new task causes isDone to be true
     */
    public void testSetDone() {
        PublicCancellableTask task = new PublicCancellableTask(new NoOpRunnable());
        task.setDone();
        assertTrue(task.isDone());
        assertFalse(task.isCancelled());
    }

    /**
     * setCancelled of a new task causes isCancelled to be true
     */
    public void testSetCancelled() {
        PublicCancellableTask task = new PublicCancellableTask(new NoOpRunnable());
        assertTrue(task.cancel(false));
        task.setCancelled();
        assertTrue(task.isDone());
        assertTrue(task.isCancelled());
    }

    /**
     * Cancel(true) before run succeeds
     */
    public void testCancelBeforeRun2() {
        CancellableTask task = new CancellableTask(new NoOpRunnable());
        assertTrue(task.cancel(true));
        task.run();
        assertTrue(task.isDone());
        assertTrue(task.isCancelled());
    }

    /**
     * cancel of a completed task fails
     */
    public void testCancelAfterRun() {
        CancellableTask task = new CancellableTask(new NoOpRunnable());
        task.run();
        assertFalse(task.cancel(false));
        assertTrue(task.isDone());
        assertFalse(task.isCancelled());
    }

    /**
     * cancel(true) interrupts a running task
     */
    public void testCancelInterrupt(){
        CancellableTask task = new CancellableTask(new SmallInterruptedRunnable());
        Thread t = new  Thread(task);
        
        try{
            t.start();
            Thread.sleep(SHORT_DELAY_MS);
            assertTrue(task.cancel(true));
            t.join();
            assertTrue(task.isDone());
            assertTrue(task.isCancelled());
        } catch(InterruptedException e){
            unexpectedException();
        }
    }


    /**
     * cancel(false) does not interrupt a running task
     */
    public void testCancelNoInterrupt(){
        CancellableTask task = new CancellableTask(new SmallRunnable());
        Thread t = new  Thread(task);
        try{
            t.start();
            Thread.sleep(SHORT_DELAY_MS);
            assertTrue(task.cancel(false));
            t.join();
            assertTrue(task.isDone());
            assertTrue(task.isCancelled());
        } catch(InterruptedException e){
            unexpectedException();
        }
    }


}
Revision:	1.7
Committed:	Thu Dec 4 20:54:46 2003 UTC (20 years, 5 months ago) by dl
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.6:	+0 -0 lines
State:	*FILE REMOVED*
Log Message:	Collapsed Cancellable and Future
#	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	import java.util.*;
10	import java.util.concurrent.*;
11
12	public class CancellableTaskTest extends JSR166TestCase {
13	public static void main(String[] args) {
14	junit.textui.TestRunner.run (suite());
15	}
16	public static Test suite() {
17	return new TestSuite(CancellableTaskTest.class);
18	}
19
20	/**
21	* Subclass to expose protected methods
22	*/
23	static class PublicCancellableTask extends CancellableTask {
24	public PublicCancellableTask() {}
25	public PublicCancellableTask(Runnable r) { super(r); }
26	public boolean reset() { return super.reset(); }
27	public Runnable getRunnable() { return super.getRunnable(); }
28	public void setRunnable(Runnable r) { super.setRunnable(r); }
29	public void setCancelled() { super.setCancelled(); }
30	public void setDone() { super.setDone(); }
31	}
32
33	/**
34	* creating task with null runnable throws NPE
35	*/
36	public void testConstructor(){
37	try {
38	CancellableTask task = new CancellableTask(null);
39	shouldThrow();
40	}
41	catch(NullPointerException success) {
42	}
43	}
44
45	/**
46	* isDone is true after task is run
47	*/
48	public void testIsDone(){
49	CancellableTask task = new CancellableTask(new NoOpRunnable());
50	task.run();
51	assertTrue(task.isDone());
52	assertFalse(task.isCancelled());
53	}
54
55	/**
56	* Cancelling before running succeeds
57	*/
58	public void testCancelBeforeRun() {
59	CancellableTask task = new CancellableTask(new NoOpRunnable());
60	assertTrue(task.cancel(false));
61	task.run();
62	assertTrue(task.isDone());
63	assertTrue(task.isCancelled());
64	}
65
66	/**
67	* reset of a done task succeeds and changes status to not done
68	*/
69	public void testReset(){
70	PublicCancellableTask task = new PublicCancellableTask(new NoOpRunnable());
71	task.run();
72	assertTrue(task.isDone());
73	assertTrue(task.reset());
74	assertFalse(task.isDone());
75	}
76
77	/**
78	* Resetting after cancellation fails
79	*/
80	public void testResetAfterCancel() {
81	PublicCancellableTask task = new PublicCancellableTask(new NoOpRunnable());
82	assertTrue(task.cancel(false));
83	task.run();
84	assertTrue(task.isDone());
85	assertTrue(task.isCancelled());
86	assertFalse(task.reset());
87	}
88
89	/**
90	* Setting the runnable causes it to be used
91	*/
92	public void testSetRunnable() {
93	PublicCancellableTask task = new PublicCancellableTask();
94	assertNull(task.getRunnable());
95	Runnable r = new NoOpRunnable();
96	task.setRunnable(r);
97	assertEquals(r, task.getRunnable());
98	assertTrue(task.cancel(false));
99	task.run();
100	assertTrue(task.isDone());
101	assertTrue(task.isCancelled());
102	assertFalse(task.reset());
103	}
104
105	/**
106	* setDone of new task causes isDone to be true
107	*/
108	public void testSetDone() {
109	PublicCancellableTask task = new PublicCancellableTask(new NoOpRunnable());
110	task.setDone();
111	assertTrue(task.isDone());
112	assertFalse(task.isCancelled());
113	}
114
115	/**
116	* setCancelled of a new task causes isCancelled to be true
117	*/
118	public void testSetCancelled() {
119	PublicCancellableTask task = new PublicCancellableTask(new NoOpRunnable());
120	assertTrue(task.cancel(false));
121	task.setCancelled();
122	assertTrue(task.isDone());
123	assertTrue(task.isCancelled());
124	}
125
126	/**
127	* Cancel(true) before run succeeds
128	*/
129	public void testCancelBeforeRun2() {
130	CancellableTask task = new CancellableTask(new NoOpRunnable());
131	assertTrue(task.cancel(true));
132	task.run();
133	assertTrue(task.isDone());
134	assertTrue(task.isCancelled());
135	}
136
137	/**
138	* cancel of a completed task fails
139	*/
140	public void testCancelAfterRun() {
141	CancellableTask task = new CancellableTask(new NoOpRunnable());
142	task.run();
143	assertFalse(task.cancel(false));
144	assertTrue(task.isDone());
145	assertFalse(task.isCancelled());
146	}
147
148	/**
149	* cancel(true) interrupts a running task
150	*/
151	public void testCancelInterrupt(){
152	CancellableTask task = new CancellableTask(new SmallInterruptedRunnable());
153	Thread t = new Thread(task);
154
155	try{
156	t.start();
157	Thread.sleep(SHORT_DELAY_MS);
158	assertTrue(task.cancel(true));
159	t.join();
160	assertTrue(task.isDone());
161	assertTrue(task.isCancelled());
162	} catch(InterruptedException e){
163	unexpectedException();
164	}
165	}
166
167
168	/**
169	* cancel(false) does not interrupt a running task
170	*/
171	public void testCancelNoInterrupt(){
172	CancellableTask task = new CancellableTask(new SmallRunnable());
173	Thread t = new Thread(task);
174	try{
175	t.start();
176	Thread.sleep(SHORT_DELAY_MS);
177	assertTrue(task.cancel(false));
178	t.join();
179	assertTrue(task.isDone());
180	assertTrue(task.isCancelled());
181	} catch(InterruptedException e){
182	unexpectedException();
183	}
184	}
185
186
187	}