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
#	User	Rev	Content
1	dl	1.1	/*
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	dl	1.2	import java.io.*;
12	dl	1.1
13	dl	1.3	public class CopyOnWriteArraySetTest extends JSR166TestCase {
14	dl	1.1
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	dl	1.3	static CopyOnWriteArraySet populatedSet(int n){
24	dl	1.1	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	dl	1.3	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	dl	1.1	/**
49	dl	1.3	* addAll correctly adds each element from the given collection
50	dl	1.1	*/
51			public void testAddAll(){
52	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
53	dl	1.1	Vector v = new Vector();
54	dl	1.3	v.add(three);
55			v.add(four);
56			v.add(five);
57	dl	1.1	full.addAll(v);
58			assertEquals(6, full.size());
59			}
60
61			/**
62	dl	1.3	* addAllAbsent adds each element from the given collection that did not
63	dl	1.1	* already exist in the List
64			*/
65			public void testAddAll2(){
66	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
67	dl	1.1	Vector v = new Vector();
68	dl	1.3	v.add(three);
69			v.add(four);
70			v.add(one); // will not add this element
71	dl	1.1	full.addAll(v);
72			assertEquals(5, full.size());
73			}
74
75			/**
76	dl	1.3	* addIfAbsent will not add the element if it already exists in the list
77	dl	1.1	*/
78			public void testAdd2(){
79	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
80			full.add(one);
81	dl	1.1	assertEquals(3, full.size());
82			}
83
84			/**
85	dl	1.3	* addIfAbsent correctly adds the element when it does not exist in the list
86	dl	1.1	*/
87			public void testAdd3(){
88	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
89			full.add(three);
90			assertTrue(full.contains(three));
91	dl	1.1	}
92
93			/**
94	dl	1.3	* clear correctly removes all elements from the list
95	dl	1.1	*/
96			public void testClear(){
97	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
98	dl	1.1	full.clear();
99			assertEquals(0, full.size());
100			}
101
102			/**
103	dl	1.3	* contains returns the correct values
104	dl	1.1	*/
105			public void testContains(){
106	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
107			assertTrue(full.contains(one));
108			assertFalse(full.contains(five));
109	dl	1.1	}
110
111			public void testEquals() {
112	dl	1.3	CopyOnWriteArraySet a = populatedSet(3);
113			CopyOnWriteArraySet b = populatedSet(3);
114	dl	1.1	assertTrue(a.equals(b));
115			assertTrue(b.equals(a));
116			assertEquals(a.hashCode(), b.hashCode());
117	dl	1.3	a.add(m1);
118	dl	1.1	assertFalse(a.equals(b));
119			assertFalse(b.equals(a));
120	dl	1.3	b.add(m1);
121	dl	1.1	assertTrue(a.equals(b));
122			assertTrue(b.equals(a));
123			assertEquals(a.hashCode(), b.hashCode());
124			}
125
126
127			/**
128	dl	1.3	* containsAll returns the correct values
129	dl	1.1	*/
130			public void testContainsAll(){
131	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
132	dl	1.1	Vector v = new Vector();
133	dl	1.3	v.add(one);
134			v.add(two);
135	dl	1.1	assertTrue(full.containsAll(v));
136	dl	1.3	v.add(six);
137	dl	1.1	assertFalse(full.containsAll(v));
138			}
139
140			/**
141	dl	1.3	* isEmpty returns the correct values
142	dl	1.1	*/
143			public void testIsEmpty(){
144			CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
145	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
146	dl	1.1	assertTrue(empty.isEmpty());
147			assertFalse(full.isEmpty());
148			}
149
150			/**
151	dl	1.3	* iterator() returns an iterator containing the elements of the list
152	dl	1.1	*/
153			public void testIterator(){
154	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
155	dl	1.1	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	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
164	dl	1.1	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	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
175	dl	1.1	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	dl	1.3	* removeAll correctly removes all elements from the given collection
184	dl	1.1	*/
185			public void testRemoveAll(){
186	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
187	dl	1.1	Vector v = new Vector();
188	dl	1.3	v.add(one);
189			v.add(two);
190	dl	1.1	full.removeAll(v);
191			assertEquals(1, full.size());
192			}
193
194
195			public void testRemove(){
196	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
197			full.remove(one);
198			assertFalse(full.contains(one));
199	dl	1.1	assertEquals(2, full.size());
200			}
201
202			/**
203	dl	1.3	* size returns the correct values
204	dl	1.1	*/
205			public void testSize(){
206			CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
207	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
208	dl	1.1	assertEquals(3, full.size());
209			assertEquals(0, empty.size());
210			}
211
212			/**
213	dl	1.3	* toArray returns an Object array containing all elements from the list
214	dl	1.1	*/
215			public void testToArray(){
216	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
217	dl	1.1	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	dl	1.3	* toArray returns an Integer array containing all elements from the list
226	dl	1.1	*/
227			public void testToArray2(){
228	dl	1.3	CopyOnWriteArraySet full = populatedSet(3);
229	dl	1.1	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	dl	1.3	* toArray throws an ArrayStoreException when the given array
243	dl	1.1	* 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	dl	1.2	}
254
255			public void testSerialization() {
256	dl	1.3	CopyOnWriteArraySet q = populatedSet(SIZE);
257	dl	1.2
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	dl	1.1	}
275
276			}