test/tck/CopyOnWriteArraySetTest.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.*;
import java.io.*;

public class CopyOnWriteArraySetTest extends JSR166TestCase {
    
    public static void main(String[] args) {
        junit.textui.TestRunner.run (suite());  
    }

    public static Test suite() {
        return new TestSuite(CopyOnWriteArraySetTest.class);
    }

    static CopyOnWriteArraySet populatedSet(int n){
        CopyOnWriteArraySet a = new CopyOnWriteArraySet();
        assertTrue(a.isEmpty());
        for (int i = 0; i < n; ++i) 
            a.add(new Integer(i));
        assertFalse(a.isEmpty());
        assertEquals(n, a.size());
        return a;
    }

    public void testConstructor() {
        CopyOnWriteArraySet a = new CopyOnWriteArraySet();
        assertTrue(a.isEmpty());
    }

    public void testConstructor3() {
        Integer[] ints = new Integer[SIZE];
        for (int i = 0; i < SIZE-1; ++i)
            ints[i] = new Integer(i);
        CopyOnWriteArraySet a = new CopyOnWriteArraySet(Arrays.asList(ints));
        for (int i = 0; i < SIZE; ++i) 
            assertTrue(a.contains(ints[i]));
    }
        

    /**
     *   addAll correctly adds each element from the given collection
     */
    public void testAddAll(){
        CopyOnWriteArraySet full = populatedSet(3);
        Vector v = new Vector();
        v.add(three);
        v.add(four);
        v.add(five);
        full.addAll(v);
        assertEquals(6, full.size());
    }

    /**
     *   addAllAbsent adds each element from the given collection that did not
     *  already exist in the List
     */
    public void testAddAll2(){
        CopyOnWriteArraySet full = populatedSet(3);
        Vector v = new Vector();
        v.add(three);
        v.add(four);
        v.add(one); // will not add this element
        full.addAll(v);
        assertEquals(5, full.size());
    }

    /**
     *   addIfAbsent will not add the element if it already exists in the list
     */
    public void testAdd2(){
        CopyOnWriteArraySet full = populatedSet(3);
        full.add(one);
        assertEquals(3, full.size());
    }

    /**
     *   addIfAbsent correctly adds the element when it does not exist in the list
     */
    public void testAdd3(){
        CopyOnWriteArraySet full = populatedSet(3);
        full.add(three);
        assertTrue(full.contains(three));
    }

    /**
     *   clear correctly removes all elements from the list
     */
    public void testClear(){
        CopyOnWriteArraySet full = populatedSet(3);
        full.clear();
        assertEquals(0, full.size());
    }

    /**
     *   contains returns the correct values 
     */
    public void testContains(){
        CopyOnWriteArraySet full = populatedSet(3);
        assertTrue(full.contains(one));
        assertFalse(full.contains(five));
    }

    public void testEquals() {
        CopyOnWriteArraySet a = populatedSet(3);
        CopyOnWriteArraySet b = populatedSet(3);
        assertTrue(a.equals(b));
        assertTrue(b.equals(a));
        assertEquals(a.hashCode(), b.hashCode());
        a.add(m1);
        assertFalse(a.equals(b));
        assertFalse(b.equals(a));
        b.add(m1);
        assertTrue(a.equals(b));
        assertTrue(b.equals(a));
        assertEquals(a.hashCode(), b.hashCode());
    }

    
    /**
     *   containsAll returns the correct values
     */
    public void testContainsAll(){
        CopyOnWriteArraySet full = populatedSet(3);
        Vector v = new Vector();
        v.add(one);
        v.add(two);
        assertTrue(full.containsAll(v));
        v.add(six);
        assertFalse(full.containsAll(v));
    }

    /**
     *   isEmpty returns the correct values
     */
    public void testIsEmpty(){
        CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
        CopyOnWriteArraySet full = populatedSet(3);
        assertTrue(empty.isEmpty());
        assertFalse(full.isEmpty());
    }

    /**
     *   iterator() returns an iterator containing the elements of the list 
     */
    public void testIterator(){
        CopyOnWriteArraySet full = populatedSet(3);
        Iterator i = full.iterator();
        int j;
        for(j = 0; i.hasNext(); j++)
            assertEquals(j, ((Integer)i.next()).intValue());
        assertEquals(3, j);
    }

    public void testIteratorRemove () {
        CopyOnWriteArraySet full = populatedSet(3);
        Iterator it = full.iterator();
        it.next();
        try {
            it.remove();
            fail("should throw");
        }
        catch (UnsupportedOperationException success) {}
    }

    public void testToString(){
        CopyOnWriteArraySet full = populatedSet(3);
        String s = full.toString();
        for (int i = 0; i < 3; ++i) {
            assertTrue(s.indexOf(String.valueOf(i)) >= 0);
        }
    }        


    /**
     *   removeAll correctly removes all elements from the given collection
     */
    public void testRemoveAll(){
        CopyOnWriteArraySet full = populatedSet(3);
        Vector v = new Vector();
        v.add(one);
        v.add(two);
        full.removeAll(v);
        assertEquals(1, full.size());
    }


    public void testRemove(){
        CopyOnWriteArraySet full = populatedSet(3);
        full.remove(one);
        assertFalse(full.contains(one));
        assertEquals(2, full.size());
    }

    /**
     *   size returns the correct values
     */
    public void testSize(){
        CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
        CopyOnWriteArraySet full = populatedSet(3);
        assertEquals(3, full.size());
        assertEquals(0, empty.size());
    }

    /**
     *   toArray returns an Object array containing all elements from the list
     */
    public void testToArray(){
        CopyOnWriteArraySet full = populatedSet(3);
        Object[] o = full.toArray();
        assertEquals(3, o.length);
        assertEquals(0, ((Integer)o[0]).intValue());
        assertEquals(1, ((Integer)o[1]).intValue());
        assertEquals(2, ((Integer)o[2]).intValue());
    }

    /**
     *   toArray returns an Integer array containing all elements from the list
     */
    public void testToArray2(){
        CopyOnWriteArraySet full = populatedSet(3);
        Integer[] i = new Integer[3];
        i = (Integer[])full.toArray(i);
        assertEquals(3, i.length);
        assertEquals(0, i[0].intValue());
        assertEquals(1, i[1].intValue());
        assertEquals(2, i[2].intValue());
    }


    // Exception tests

    /**
     *   toArray throws an ArrayStoreException when the given array
     *  can not store the objects inside the list
     */
    public void testToArray_ArrayStoreException(){
        try{
            CopyOnWriteArraySet c = new CopyOnWriteArraySet();
            c.add("zfasdfsdf");
            c.add("asdadasd");
            c.toArray(new Long[5]);
            fail("Object[] toArray(Object[]) should throw ArrayStoreException");
        }catch(ArrayStoreException e){}
    }

    public void testSerialization() {
        CopyOnWriteArraySet q = populatedSet(SIZE);

        try {
            ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
            ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
            out.writeObject(q);
            out.close();

            ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
            ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
            CopyOnWriteArraySet r = (CopyOnWriteArraySet)in.readObject();
            assertEquals(q.size(), r.size());
            assertTrue(q.equals(r));
            assertTrue(r.equals(q));
        } catch(Exception e){
            e.printStackTrace();
            fail("unexpected exception");
        }
    }

}
Revision:	1.3
Committed:	Sun Sep 14 20:42:40 2003 UTC (20 years, 8 months ago) by dl
Branch:	MAIN
Changes since 1.2:	+70 -55 lines
Log Message:	New base class JSR166TestCase
#	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	import java.io.*;
12
13	public class CopyOnWriteArraySetTest extends JSR166TestCase {
14
15	public static void main(String[] args) {
16	junit.textui.TestRunner.run (suite());
17	}
18
19	public static Test suite() {
20	return new TestSuite(CopyOnWriteArraySetTest.class);
21	}
22
23	static CopyOnWriteArraySet populatedSet(int n){
24	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
25	assertTrue(a.isEmpty());
26	for (int i = 0; i < n; ++i)
27	a.add(new Integer(i));
28	assertFalse(a.isEmpty());
29	assertEquals(n, a.size());
30	return a;
31	}
32
33	public void testConstructor() {
34	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
35	assertTrue(a.isEmpty());
36	}
37
38	public void testConstructor3() {
39	Integer[] ints = new Integer[SIZE];
40	for (int i = 0; i < SIZE-1; ++i)
41	ints[i] = new Integer(i);
42	CopyOnWriteArraySet a = new CopyOnWriteArraySet(Arrays.asList(ints));
43	for (int i = 0; i < SIZE; ++i)
44	assertTrue(a.contains(ints[i]));
45	}
46
47
48	/**
49	* addAll correctly adds each element from the given collection
50	*/
51	public void testAddAll(){
52	CopyOnWriteArraySet full = populatedSet(3);
53	Vector v = new Vector();
54	v.add(three);
55	v.add(four);
56	v.add(five);
57	full.addAll(v);
58	assertEquals(6, full.size());
59	}
60
61	/**
62	* addAllAbsent adds each element from the given collection that did not
63	* already exist in the List
64	*/
65	public void testAddAll2(){
66	CopyOnWriteArraySet full = populatedSet(3);
67	Vector v = new Vector();
68	v.add(three);
69	v.add(four);
70	v.add(one); // will not add this element
71	full.addAll(v);
72	assertEquals(5, full.size());
73	}
74
75	/**
76	* addIfAbsent will not add the element if it already exists in the list
77	*/
78	public void testAdd2(){
79	CopyOnWriteArraySet full = populatedSet(3);
80	full.add(one);
81	assertEquals(3, full.size());
82	}
83
84	/**
85	* addIfAbsent correctly adds the element when it does not exist in the list
86	*/
87	public void testAdd3(){
88	CopyOnWriteArraySet full = populatedSet(3);
89	full.add(three);
90	assertTrue(full.contains(three));
91	}
92
93	/**
94	* clear correctly removes all elements from the list
95	*/
96	public void testClear(){
97	CopyOnWriteArraySet full = populatedSet(3);
98	full.clear();
99	assertEquals(0, full.size());
100	}
101
102	/**
103	* contains returns the correct values
104	*/
105	public void testContains(){
106	CopyOnWriteArraySet full = populatedSet(3);
107	assertTrue(full.contains(one));
108	assertFalse(full.contains(five));
109	}
110
111	public void testEquals() {
112	CopyOnWriteArraySet a = populatedSet(3);
113	CopyOnWriteArraySet b = populatedSet(3);
114	assertTrue(a.equals(b));
115	assertTrue(b.equals(a));
116	assertEquals(a.hashCode(), b.hashCode());
117	a.add(m1);
118	assertFalse(a.equals(b));
119	assertFalse(b.equals(a));
120	b.add(m1);
121	assertTrue(a.equals(b));
122	assertTrue(b.equals(a));
123	assertEquals(a.hashCode(), b.hashCode());
124	}
125
126
127	/**
128	* containsAll returns the correct values
129	*/
130	public void testContainsAll(){
131	CopyOnWriteArraySet full = populatedSet(3);
132	Vector v = new Vector();
133	v.add(one);
134	v.add(two);
135	assertTrue(full.containsAll(v));
136	v.add(six);
137	assertFalse(full.containsAll(v));
138	}
139
140	/**
141	* isEmpty returns the correct values
142	*/
143	public void testIsEmpty(){
144	CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
145	CopyOnWriteArraySet full = populatedSet(3);
146	assertTrue(empty.isEmpty());
147	assertFalse(full.isEmpty());
148	}
149
150	/**
151	* iterator() returns an iterator containing the elements of the list
152	*/
153	public void testIterator(){
154	CopyOnWriteArraySet full = populatedSet(3);
155	Iterator i = full.iterator();
156	int j;
157	for(j = 0; i.hasNext(); j++)
158	assertEquals(j, ((Integer)i.next()).intValue());
159	assertEquals(3, j);
160	}
161
162	public void testIteratorRemove () {
163	CopyOnWriteArraySet full = populatedSet(3);
164	Iterator it = full.iterator();
165	it.next();
166	try {
167	it.remove();
168	fail("should throw");
169	}
170	catch (UnsupportedOperationException success) {}
171	}
172
173	public void testToString(){
174	CopyOnWriteArraySet full = populatedSet(3);
175	String s = full.toString();
176	for (int i = 0; i < 3; ++i) {
177	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
178	}
179	}
180
181
182	/**
183	* removeAll correctly removes all elements from the given collection
184	*/
185	public void testRemoveAll(){
186	CopyOnWriteArraySet full = populatedSet(3);
187	Vector v = new Vector();
188	v.add(one);
189	v.add(two);
190	full.removeAll(v);
191	assertEquals(1, full.size());
192	}
193
194
195	public void testRemove(){
196	CopyOnWriteArraySet full = populatedSet(3);
197	full.remove(one);
198	assertFalse(full.contains(one));
199	assertEquals(2, full.size());
200	}
201
202	/**
203	* size returns the correct values
204	*/
205	public void testSize(){
206	CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
207	CopyOnWriteArraySet full = populatedSet(3);
208	assertEquals(3, full.size());
209	assertEquals(0, empty.size());
210	}
211
212	/**
213	* toArray returns an Object array containing all elements from the list
214	*/
215	public void testToArray(){
216	CopyOnWriteArraySet full = populatedSet(3);
217	Object[] o = full.toArray();
218	assertEquals(3, o.length);
219	assertEquals(0, ((Integer)o[0]).intValue());
220	assertEquals(1, ((Integer)o[1]).intValue());
221	assertEquals(2, ((Integer)o[2]).intValue());
222	}
223
224	/**
225	* toArray returns an Integer array containing all elements from the list
226	*/
227	public void testToArray2(){
228	CopyOnWriteArraySet full = populatedSet(3);
229	Integer[] i = new Integer[3];
230	i = (Integer[])full.toArray(i);
231	assertEquals(3, i.length);
232	assertEquals(0, i[0].intValue());
233	assertEquals(1, i[1].intValue());
234	assertEquals(2, i[2].intValue());
235	}
236
237
238
239	// Exception tests
240
241	/**
242	* toArray throws an ArrayStoreException when the given array
243	* can not store the objects inside the list
244	*/
245	public void testToArray_ArrayStoreException(){
246	try{
247	CopyOnWriteArraySet c = new CopyOnWriteArraySet();
248	c.add("zfasdfsdf");
249	c.add("asdadasd");
250	c.toArray(new Long[5]);
251	fail("Object[] toArray(Object[]) should throw ArrayStoreException");
252	}catch(ArrayStoreException e){}
253	}
254
255	public void testSerialization() {
256	CopyOnWriteArraySet q = populatedSet(SIZE);
257
258	try {
259	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
260	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
261	out.writeObject(q);
262	out.close();
263
264	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
265	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
266	CopyOnWriteArraySet r = (CopyOnWriteArraySet)in.readObject();
267	assertEquals(q.size(), r.size());
268	assertTrue(q.equals(r));
269	assertTrue(r.equals(q));
270	} catch(Exception e){
271	e.printStackTrace();
272	fail("unexpected exception");
273	}
274	}
275
276	}