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Comparing jsr166/src/test/tck/CopyOnWriteArraySetTest.java (file contents):
Revision 1.3 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.38 by jsr166, Wed Jan 4 06:09:58 2017 UTC

#	Line 1 | Line 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.
2	>	* 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/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
9	>	import java.util.ArrayList;
10	>	import java.util.Arrays;
11	>	import java.util.Collection;
12	>	import java.util.Iterator;
13	>	import java.util.NoSuchElementException;
14	>	import java.util.Set;
15	>	import java.util.concurrent.CopyOnWriteArraySet;
16	>
17	>	import junit.framework.Test;
18	>	import junit.framework.TestSuite;
19
20		public class CopyOnWriteArraySetTest extends JSR166TestCase {
14	–
21		public static void main(String[] args) {
22	<	junit.textui.TestRunner.run (suite());
22	>	main(suite(), args);
23		}
18	–
24		public static Test suite() {
25	<	return new TestSuite(CopyOnWriteArraySetTest.class);
25	>	return new TestSuite(CopyOnWriteArraySetTest.class);
26		}
27
28	<	static CopyOnWriteArraySet populatedSet(int n){
29	<	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
28	>	static CopyOnWriteArraySet<Integer> populatedSet(int n) {
29	>	CopyOnWriteArraySet<Integer> a = new CopyOnWriteArraySet<>();
30		assertTrue(a.isEmpty());
31	<	for (int i = 0; i < n; ++i)
32	<	a.add(new Integer(i));
33	<	assertFalse(a.isEmpty());
31	>	for (int i = 0; i < n; i++)
32	>	a.add(i);
33	>	assertEquals(n == 0, a.isEmpty());
34		assertEquals(n, a.size());
35		return a;
36		}
37
38	+	static CopyOnWriteArraySet populatedSet(Integer[] elements) {
39	+	CopyOnWriteArraySet<Integer> a = new CopyOnWriteArraySet<>();
40	+	assertTrue(a.isEmpty());
41	+	for (int i = 0; i < elements.length; i++)
42	+	a.add(elements[i]);
43	+	assertFalse(a.isEmpty());
44	+	assertEquals(elements.length, a.size());
45	+	return a;
46	+	}
47	+
48	+	/**
49	+	* Default-constructed set is empty
50	+	*/
51		public void testConstructor() {
52	<	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
52	>	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
53		assertTrue(a.isEmpty());
54		}
55
56	+	/**
57	+	* Collection-constructed set holds all of its elements
58	+	*/
59		public void testConstructor3() {
60		Integer[] ints = new Integer[SIZE];
61	<	for (int i = 0; i < SIZE-1; ++i)
61	>	for (int i = 0; i < SIZE - 1; ++i)
62		ints[i] = new Integer(i);
63	<	CopyOnWriteArraySet a = new CopyOnWriteArraySet(Arrays.asList(ints));
64	<	for (int i = 0; i < SIZE; ++i)
63	>	CopyOnWriteArraySet a = new CopyOnWriteArraySet(Arrays.asList(ints));
64	>	for (int i = 0; i < SIZE; ++i)
65		assertTrue(a.contains(ints[i]));
66		}
46	–
67
68		/**
69	<	*   addAll correctly adds each element from the given collection
69	>	* addAll adds each non-duplicate element from the given collection
70		*/
71	<	public void testAddAll(){
72	<	CopyOnWriteArraySet full = populatedSet(3);
73	<	Vector v = new Vector();
74	<	v.add(three);
75	<	v.add(four);
76	<	v.add(five);
57	<	full.addAll(v);
58	<	assertEquals(6, full.size());
71	>	public void testAddAll() {
72	>	Set full = populatedSet(3);
73	>	assertTrue(full.addAll(Arrays.asList(three, four, five)));
74	>	assertEquals(6, full.size());
75	>	assertFalse(full.addAll(Arrays.asList(three, four, five)));
76	>	assertEquals(6, full.size());
77		}
78
79		/**
80	<	*   addAllAbsent adds each element from the given collection that did not
63	<	*  already exist in the List
80	>	* addAll adds each non-duplicate element from the given collection
81		*/
82	<	public void testAddAll2(){
83	<	CopyOnWriteArraySet full = populatedSet(3);
84	<	Vector v = new Vector();
85	<	v.add(three);
86	<	v.add(four);
87	<	v.add(one); // will not add this element
88	<	full.addAll(v);
72	<	assertEquals(5, full.size());
82	>	public void testAddAll2() {
83	>	Set full = populatedSet(3);
84	>	// "one" is duplicate and will not be added
85	>	assertTrue(full.addAll(Arrays.asList(three, four, one)));
86	>	assertEquals(5, full.size());
87	>	assertFalse(full.addAll(Arrays.asList(three, four, one)));
88	>	assertEquals(5, full.size());
89		}
90
91		/**
92	<	*   addIfAbsent will not add the element if it already exists in the list
92	>	* add will not add the element if it already exists in the set
93		*/
94	<	public void testAdd2(){
95	<	CopyOnWriteArraySet full = populatedSet(3);
96	<	full.add(one);
97	<	assertEquals(3, full.size());
94	>	public void testAdd2() {
95	>	Set full = populatedSet(3);
96	>	full.add(one);
97	>	assertEquals(3, full.size());
98		}
99
100		/**
101	<	*   addIfAbsent correctly adds the element when it does not exist in the list
101	>	* add adds the element when it does not exist in the set
102		*/
103	<	public void testAdd3(){
104	<	CopyOnWriteArraySet full = populatedSet(3);
103	>	public void testAdd3() {
104	>	Set full = populatedSet(3);
105		full.add(three);
106		assertTrue(full.contains(three));
107		}
108
109		/**
110	<	*   clear correctly removes all elements from the list
110	>	* clear removes all elements from the set
111		*/
112	<	public void testClear(){
113	<	CopyOnWriteArraySet full = populatedSet(3);
114	<	full.clear();
115	<	assertEquals(0, full.size());
112	>	public void testClear() {
113	>	Collection full = populatedSet(3);
114	>	full.clear();
115	>	assertEquals(0, full.size());
116	>	assertTrue(full.isEmpty());
117		}
118
119		/**
120	<	*   contains returns the correct values
120	>	* contains returns true for added elements
121		*/
122	<	public void testContains(){
123	<	CopyOnWriteArraySet full = populatedSet(3);
124	<	assertTrue(full.contains(one));
125	<	assertFalse(full.contains(five));
122	>	public void testContains() {
123	>	Collection full = populatedSet(3);
124	>	assertTrue(full.contains(one));
125	>	assertFalse(full.contains(five));
126		}
127
128	+	/**
129	+	* Sets with equal elements are equal
130	+	*/
131		public void testEquals() {
132	<	CopyOnWriteArraySet a = populatedSet(3);
133	<	CopyOnWriteArraySet b = populatedSet(3);
132	>	CopyOnWriteArraySet a = populatedSet(3);
133	>	CopyOnWriteArraySet b = populatedSet(3);
134		assertTrue(a.equals(b));
135		assertTrue(b.equals(a));
136	+	assertTrue(a.containsAll(b));
137	+	assertTrue(b.containsAll(a));
138		assertEquals(a.hashCode(), b.hashCode());
139	+	assertEquals(a.size(), b.size());
140	+
141		a.add(m1);
142		assertFalse(a.equals(b));
143		assertFalse(b.equals(a));
144	+	assertTrue(a.containsAll(b));
145	+	assertFalse(b.containsAll(a));
146		b.add(m1);
147		assertTrue(a.equals(b));
148		assertTrue(b.equals(a));
149	+	assertTrue(a.containsAll(b));
150	+	assertTrue(b.containsAll(a));
151		assertEquals(a.hashCode(), b.hashCode());
152	+
153	+	Object x = a.iterator().next();
154	+	a.remove(x);
155	+	assertFalse(a.equals(b));
156	+	assertFalse(b.equals(a));
157	+	assertFalse(a.containsAll(b));
158	+	assertTrue(b.containsAll(a));
159	+	a.add(x);
160	+	assertTrue(a.equals(b));
161	+	assertTrue(b.equals(a));
162	+	assertTrue(a.containsAll(b));
163	+	assertTrue(b.containsAll(a));
164	+	assertEquals(a.hashCode(), b.hashCode());
165	+	assertEquals(a.size(), b.size());
166	+
167	+	CopyOnWriteArraySet empty1 = new CopyOnWriteArraySet(Arrays.asList());
168	+	CopyOnWriteArraySet empty2 = new CopyOnWriteArraySet(Arrays.asList());
169	+	assertTrue(empty1.equals(empty1));
170	+	assertTrue(empty1.equals(empty2));
171	+
172	+	assertFalse(empty1.equals(a));
173	+	assertFalse(a.equals(empty1));
174	+
175	+	assertFalse(a.equals(null));
176	+	}
177	+
178	+	/**
179	+	* containsAll returns true for collections with subset of elements
180	+	*/
181	+	public void testContainsAll() {
182	+	Collection full = populatedSet(3);
183	+	assertTrue(full.containsAll(full));
184	+	assertTrue(full.containsAll(Arrays.asList()));
185	+	assertTrue(full.containsAll(Arrays.asList(one)));
186	+	assertTrue(full.containsAll(Arrays.asList(one, two)));
187	+	assertFalse(full.containsAll(Arrays.asList(one, two, six)));
188	+	assertFalse(full.containsAll(Arrays.asList(six)));
189	+
190	+	CopyOnWriteArraySet empty1 = new CopyOnWriteArraySet(Arrays.asList());
191	+	CopyOnWriteArraySet empty2 = new CopyOnWriteArraySet(Arrays.asList());
192	+	assertTrue(empty1.containsAll(empty2));
193	+	assertTrue(empty1.containsAll(empty1));
194	+	assertFalse(empty1.containsAll(full));
195	+	assertTrue(full.containsAll(empty1));
196	+
197	+	try {
198	+	full.containsAll(null);
199	+	shouldThrow();
200	+	} catch (NullPointerException success) {}
201		}
202
126	–
203		/**
204	<	*   containsAll returns the correct values
204	>	* isEmpty is true when empty, else false
205		*/
206	<	public void testContainsAll(){
207	<	CopyOnWriteArraySet full = populatedSet(3);
208	<	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));
206	>	public void testIsEmpty() {
207	>	assertTrue(populatedSet(0).isEmpty());
208	>	assertFalse(populatedSet(3).isEmpty());
209		}
210
211		/**
212	<	*   isEmpty returns the correct values
212	>	* iterator() returns an iterator containing the elements of the
213	>	* set in insertion order
214		*/
215	<	public void testIsEmpty(){
216	<	CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
217	<	CopyOnWriteArraySet full = populatedSet(3);
218	<	assertTrue(empty.isEmpty());
219	<	assertFalse(full.isEmpty());
215	>	public void testIterator() {
216	>	Collection empty = new CopyOnWriteArraySet();
217	>	assertFalse(empty.iterator().hasNext());
218	>	try {
219	>	empty.iterator().next();
220	>	shouldThrow();
221	>	} catch (NoSuchElementException success) {}
222	>
223	>	Integer[] elements = new Integer[SIZE];
224	>	for (int i = 0; i < SIZE; i++)
225	>	elements[i] = i;
226	>	shuffle(elements);
227	>	Collection<Integer> full = populatedSet(elements);
228	>
229	>	Iterator it = full.iterator();
230	>	for (int j = 0; j < SIZE; j++) {
231	>	assertTrue(it.hasNext());
232	>	assertEquals(elements[j], it.next());
233	>	}
234	>	assertIteratorExhausted(it);
235		}
236
237		/**
238	<	*   iterator() returns an iterator containing the elements of the list
238	>	* iterator of empty collection has no elements
239		*/
240	<	public void testIterator(){
241	<	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);
240	>	public void testEmptyIterator() {
241	>	assertIteratorExhausted(new CopyOnWriteArraySet().iterator());
242		}
243
244	<	public void testIteratorRemove () {
245	<	CopyOnWriteArraySet full = populatedSet(3);
244	>	/**
245	>	* iterator remove is unsupported
246	>	*/
247	>	public void testIteratorRemove() {
248	>	Collection full = populatedSet(3);
249		Iterator it = full.iterator();
250		it.next();
251		try {
252		it.remove();
253	<	fail("should throw");
254	<	}
170	<	catch (UnsupportedOperationException success) {}
253	>	shouldThrow();
254	>	} catch (UnsupportedOperationException success) {}
255		}
256
257	<	public void testToString(){
258	<	CopyOnWriteArraySet full = populatedSet(3);
257	>	/**
258	>	* toString holds toString of elements
259	>	*/
260	>	public void testToString() {
261	>	assertEquals("[]", new CopyOnWriteArraySet().toString());
262	>	Collection full = populatedSet(3);
263		String s = full.toString();
264	<	for (int i = 0; i < 3; ++i) {
265	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
266	<	}
267	<	}
268	<
264	>	for (int i = 0; i < 3; ++i)
265	>	assertTrue(s.contains(String.valueOf(i)));
266	>	assertEquals(new ArrayList(full).toString(),
267	>	full.toString());
268	>	}
269
270		/**
271	<	*   removeAll correctly removes all elements from the given collection
271	>	* removeAll removes all elements from the given collection
272		*/
273	<	public void testRemoveAll(){
274	<	CopyOnWriteArraySet full = populatedSet(3);
275	<	Vector v = new Vector();
276	<	v.add(one);
277	<	v.add(two);
278	<	full.removeAll(v);
191	<	assertEquals(1, full.size());
273	>	public void testRemoveAll() {
274	>	Set full = populatedSet(3);
275	>	assertTrue(full.removeAll(Arrays.asList(one, two)));
276	>	assertEquals(1, full.size());
277	>	assertFalse(full.removeAll(Arrays.asList(one, two)));
278	>	assertEquals(1, full.size());
279		}
280
281	<
282	<	public void testRemove(){
283	<	CopyOnWriteArraySet full = populatedSet(3);
284	<	full.remove(one);
281	>	/**
282	>	* remove removes an element
283	>	*/
284	>	public void testRemove() {
285	>	Collection full = populatedSet(3);
286	>	full.remove(one);
287		assertFalse(full.contains(one));
288	<	assertEquals(2, full.size());
288	>	assertEquals(2, full.size());
289		}
290
291		/**
292	<	*   size returns the correct values
292	>	* size returns the number of elements
293		*/
294	<	public void testSize(){
295	<	CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
296	<	CopyOnWriteArraySet full = populatedSet(3);
297	<	assertEquals(3, full.size());
298	<	assertEquals(0, empty.size());
294	>	public void testSize() {
295	>	Collection empty = new CopyOnWriteArraySet();
296	>	Collection full = populatedSet(3);
297	>	assertEquals(3, full.size());
298	>	assertEquals(0, empty.size());
299		}
300
301		/**
302	<	*   toArray returns an Object array containing all elements from the list
302	>	* toArray() returns an Object array containing all elements from
303	>	* the set in insertion order
304		*/
305	<	public void testToArray(){
306	<	CopyOnWriteArraySet full = populatedSet(3);
307	<	Object[] o = full.toArray();
308	<	assertEquals(3, o.length);
309	<	assertEquals(0, ((Integer)o[0]).intValue());
310	<	assertEquals(1, ((Integer)o[1]).intValue());
311	<	assertEquals(2, ((Integer)o[2]).intValue());
305	>	public void testToArray() {
306	>	Object[] a = new CopyOnWriteArraySet().toArray();
307	>	assertTrue(Arrays.equals(new Object[0], a));
308	>	assertSame(Object[].class, a.getClass());
309	>
310	>	Integer[] elements = new Integer[SIZE];
311	>	for (int i = 0; i < SIZE; i++)
312	>	elements[i] = i;
313	>	shuffle(elements);
314	>	Collection<Integer> full = populatedSet(elements);
315	>
316	>	assertTrue(Arrays.equals(elements, full.toArray()));
317	>	assertSame(Object[].class, full.toArray().getClass());
318		}
319
320		/**
321	<	*   toArray returns an Integer array containing all elements from the list
321	>	* toArray(Integer array) returns an Integer array containing all
322	>	* elements from the set in insertion order
323		*/
324	<	public void testToArray2(){
325	<	CopyOnWriteArraySet full = populatedSet(3);
326	<	Integer[] i = new Integer[3];
327	<	i = (Integer[])full.toArray(i);
328	<	assertEquals(3, i.length);
329	<	assertEquals(0, i[0].intValue());
330	<	assertEquals(1, i[1].intValue());
331	<	assertEquals(2, i[2].intValue());
332	<	}
324	>	public void testToArray2() {
325	>	Collection empty = new CopyOnWriteArraySet();
326	>	Integer[] a;
327	>
328	>	a = new Integer[0];
329	>	assertSame(a, empty.toArray(a));
330	>
331	>	a = new Integer[SIZE / 2];
332	>	Arrays.fill(a, 42);
333	>	assertSame(a, empty.toArray(a));
334	>	assertNull(a[0]);
335	>	for (int i = 1; i < a.length; i++)
336	>	assertEquals(42, (int) a[i]);
337
338	+	Integer[] elements = new Integer[SIZE];
339	+	for (int i = 0; i < SIZE; i++)
340	+	elements[i] = i;
341	+	shuffle(elements);
342	+	Collection<Integer> full = populatedSet(elements);
343
344	+	Arrays.fill(a, 42);
345	+	assertTrue(Arrays.equals(elements, full.toArray(a)));
346	+	for (int i = 0; i < a.length; i++)
347	+	assertEquals(42, (int) a[i]);
348	+	assertSame(Integer[].class, full.toArray(a).getClass());
349
350	<	// Exception tests
350	>	a = new Integer[SIZE];
351	>	Arrays.fill(a, 42);
352	>	assertSame(a, full.toArray(a));
353	>	assertTrue(Arrays.equals(elements, a));
354	>
355	>	a = new Integer[2 * SIZE];
356	>	Arrays.fill(a, 42);
357	>	assertSame(a, full.toArray(a));
358	>	assertTrue(Arrays.equals(elements, Arrays.copyOf(a, SIZE)));
359	>	assertNull(a[SIZE]);
360	>	for (int i = SIZE + 1; i < a.length; i++)
361	>	assertEquals(42, (int) a[i]);
362	>	}
363
364		/**
365	<	*   toArray throws an ArrayStoreException when the given array
366	<	*  can not store the objects inside the list
365	>	* toArray throws an ArrayStoreException when the given array can
366	>	* not store the objects inside the set
367		*/
368	<	public void testToArray_ArrayStoreException(){
369	<	try{
370	<	CopyOnWriteArraySet c = new CopyOnWriteArraySet();
371	<	c.add("zfasdfsdf");
372	<	c.add("asdadasd");
368	>	public void testToArray_ArrayStoreException() {
369	>	CopyOnWriteArraySet c = new CopyOnWriteArraySet();
370	>	c.add("zfasdfsdf");
371	>	c.add("asdadasd");
372	>	try {
373		c.toArray(new Long[5]);
374	<	fail("Object[] toArray(Object[]) should throw ArrayStoreException");
375	<	}catch(ArrayStoreException e){}
374	>	shouldThrow();
375	>	} catch (ArrayStoreException success) {}
376		}
377
378	<	public void testSerialization() {
379	<	CopyOnWriteArraySet q = populatedSet(SIZE);
378	>	/**
379	>	* A deserialized serialized set is equal
380	>	*/
381	>	public void testSerialization() throws Exception {
382	>	Set x = populatedSet(SIZE);
383	>	Set y = serialClone(x);
384
385	<	try {
386	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
387	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
388	<	out.writeObject(q);
389	<	out.close();
390	<
391	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
392	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
393	<	CopyOnWriteArraySet r = (CopyOnWriteArraySet)in.readObject();
394	<	assertEquals(q.size(), r.size());
395	<	assertTrue(q.equals(r));
396	<	assertTrue(r.equals(q));
397	<	} catch(Exception e){
398	<	e.printStackTrace();
399	<	fail("unexpected exception");
400	<	}
385	>	assertNotSame(y, x);
386	>	assertEquals(x.size(), y.size());
387	>	assertEquals(x.toString(), y.toString());
388	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
389	>	assertEquals(x, y);
390	>	assertEquals(y, x);
391	>	}
392	>
393	>	/**
394	>	* addAll is idempotent
395	>	*/
396	>	public void testAddAll_idempotent() throws Exception {
397	>	Set x = populatedSet(SIZE);
398	>	Set y = new CopyOnWriteArraySet(x);
399	>	y.addAll(x);
400	>	assertEquals(x, y);
401	>	assertEquals(y, x);
402		}
403
404		}

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