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root/jsr166/jsr166/src/test/tck/CopyOnWriteArraySetTest.java

Comparing jsr166/src/test/tck/CopyOnWriteArraySetTest.java (file contents):
Revision 1.3 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.34 by jsr166, Sat May 23 00:53:08 2015 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.Collections;
13	>	import java.util.Iterator;
14	>	import java.util.NoSuchElementException;
15	>	import java.util.Set;
16	>	import java.util.concurrent.CopyOnWriteArraySet;
17	>
18	>	import junit.framework.Test;
19	>	import junit.framework.TestSuite;
20
21		public class CopyOnWriteArraySetTest extends JSR166TestCase {
14	–
22		public static void main(String[] args) {
23	<	junit.textui.TestRunner.run (suite());
23	>	main(suite(), args);
24		}
18	–
25		public static Test suite() {
26	<	return new TestSuite(CopyOnWriteArraySetTest.class);
26	>	return new TestSuite(CopyOnWriteArraySetTest.class);
27		}
28
29	<	static CopyOnWriteArraySet populatedSet(int n){
30	<	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
29	>	static CopyOnWriteArraySet<Integer> populatedSet(int n) {
30	>	CopyOnWriteArraySet<Integer> a = new CopyOnWriteArraySet<Integer>();
31		assertTrue(a.isEmpty());
32	<	for (int i = 0; i < n; ++i)
33	<	a.add(new Integer(i));
34	<	assertFalse(a.isEmpty());
32	>	for (int i = 0; i < n; i++)
33	>	a.add(i);
34	>	assertEquals(n == 0, a.isEmpty());
35		assertEquals(n, a.size());
36		return a;
37		}
38
39	+	static CopyOnWriteArraySet populatedSet(Integer[] elements) {
40	+	CopyOnWriteArraySet<Integer> a = new CopyOnWriteArraySet<Integer>();
41	+	assertTrue(a.isEmpty());
42	+	for (int i = 0; i < elements.length; i++)
43	+	a.add(elements[i]);
44	+	assertFalse(a.isEmpty());
45	+	assertEquals(elements.length, a.size());
46	+	return a;
47	+	}
48	+
49	+	/**
50	+	* Default-constructed set is empty
51	+	*/
52		public void testConstructor() {
53	<	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
53	>	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
54		assertTrue(a.isEmpty());
55		}
56
57	+	/**
58	+	* Collection-constructed set holds all of its elements
59	+	*/
60		public void testConstructor3() {
61		Integer[] ints = new Integer[SIZE];
62	<	for (int i = 0; i < SIZE-1; ++i)
62	>	for (int i = 0; i < SIZE - 1; ++i)
63		ints[i] = new Integer(i);
64	<	CopyOnWriteArraySet a = new CopyOnWriteArraySet(Arrays.asList(ints));
65	<	for (int i = 0; i < SIZE; ++i)
64	>	CopyOnWriteArraySet a = new CopyOnWriteArraySet(Arrays.asList(ints));
65	>	for (int i = 0; i < SIZE; ++i)
66		assertTrue(a.contains(ints[i]));
67		}
46	–
68
69		/**
70	<	*   addAll correctly adds each element from the given collection
70	>	* addAll adds each non-duplicate element from the given collection
71		*/
72	<	public void testAddAll(){
73	<	CopyOnWriteArraySet full = populatedSet(3);
74	<	Vector v = new Vector();
75	<	v.add(three);
76	<	v.add(four);
77	<	v.add(five);
57	<	full.addAll(v);
58	<	assertEquals(6, full.size());
72	>	public void testAddAll() {
73	>	Set full = populatedSet(3);
74	>	assertTrue(full.addAll(Arrays.asList(three, four, five)));
75	>	assertEquals(6, full.size());
76	>	assertFalse(full.addAll(Arrays.asList(three, four, five)));
77	>	assertEquals(6, full.size());
78		}
79
80		/**
81	<	*   addAllAbsent adds each element from the given collection that did not
63	<	*  already exist in the List
81	>	* addAll adds each non-duplicate element from the given collection
82		*/
83	<	public void testAddAll2(){
84	<	CopyOnWriteArraySet full = populatedSet(3);
85	<	Vector v = new Vector();
86	<	v.add(three);
87	<	v.add(four);
88	<	v.add(one); // will not add this element
89	<	full.addAll(v);
72	<	assertEquals(5, full.size());
83	>	public void testAddAll2() {
84	>	Set full = populatedSet(3);
85	>	// "one" is duplicate and will not be added
86	>	assertTrue(full.addAll(Arrays.asList(three, four, one)));
87	>	assertEquals(5, full.size());
88	>	assertFalse(full.addAll(Arrays.asList(three, four, one)));
89	>	assertEquals(5, full.size());
90		}
91
92		/**
93	<	*   addIfAbsent will not add the element if it already exists in the list
93	>	* add will not add the element if it already exists in the set
94		*/
95	<	public void testAdd2(){
96	<	CopyOnWriteArraySet full = populatedSet(3);
97	<	full.add(one);
98	<	assertEquals(3, full.size());
95	>	public void testAdd2() {
96	>	Set full = populatedSet(3);
97	>	full.add(one);
98	>	assertEquals(3, full.size());
99		}
100
101		/**
102	<	*   addIfAbsent correctly adds the element when it does not exist in the list
102	>	* add adds the element when it does not exist in the set
103		*/
104	<	public void testAdd3(){
105	<	CopyOnWriteArraySet full = populatedSet(3);
104	>	public void testAdd3() {
105	>	Set full = populatedSet(3);
106		full.add(three);
107		assertTrue(full.contains(three));
108		}
109
110		/**
111	<	*   clear correctly removes all elements from the list
111	>	* clear removes all elements from the set
112		*/
113	<	public void testClear(){
114	<	CopyOnWriteArraySet full = populatedSet(3);
115	<	full.clear();
116	<	assertEquals(0, full.size());
113	>	public void testClear() {
114	>	Collection full = populatedSet(3);
115	>	full.clear();
116	>	assertEquals(0, full.size());
117	>	assertTrue(full.isEmpty());
118		}
119
120		/**
121	<	*   contains returns the correct values
121	>	* contains returns true for added elements
122		*/
123	<	public void testContains(){
124	<	CopyOnWriteArraySet full = populatedSet(3);
125	<	assertTrue(full.contains(one));
126	<	assertFalse(full.contains(five));
123	>	public void testContains() {
124	>	Collection full = populatedSet(3);
125	>	assertTrue(full.contains(one));
126	>	assertFalse(full.contains(five));
127		}
128
129	+	/**
130	+	* Sets with equal elements are equal
131	+	*/
132		public void testEquals() {
133	<	CopyOnWriteArraySet a = populatedSet(3);
134	<	CopyOnWriteArraySet b = populatedSet(3);
133	>	CopyOnWriteArraySet a = populatedSet(3);
134	>	CopyOnWriteArraySet b = populatedSet(3);
135		assertTrue(a.equals(b));
136		assertTrue(b.equals(a));
137		assertEquals(a.hashCode(), b.hashCode());
#	Line 123 | Line 144 | public class CopyOnWriteArraySetTest ext
144		assertEquals(a.hashCode(), b.hashCode());
145		}
146
126	–
147		/**
148	<	*   containsAll returns the correct values
148	>	* containsAll returns true for collections with subset of elements
149	>	*/
150	>	public void testContainsAll() {
151	>	Collection full = populatedSet(3);
152	>	assertTrue(full.containsAll(Arrays.asList()));
153	>	assertTrue(full.containsAll(Arrays.asList(one)));
154	>	assertTrue(full.containsAll(Arrays.asList(one, two)));
155	>	assertFalse(full.containsAll(Arrays.asList(one, two, six)));
156	>	assertFalse(full.containsAll(Arrays.asList(six)));
157	>	}
158	>
159	>	/**
160	>	* isEmpty is true when empty, else false
161		*/
162	<	public void testContainsAll(){
163	<	CopyOnWriteArraySet full = populatedSet(3);
164	<	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));
162	>	public void testIsEmpty() {
163	>	assertTrue(populatedSet(0).isEmpty());
164	>	assertFalse(populatedSet(3).isEmpty());
165		}
166
167		/**
168	<	*   isEmpty returns the correct values
168	>	* iterator() returns an iterator containing the elements of the
169	>	* set in insertion order
170		*/
171	<	public void testIsEmpty(){
172	<	CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
173	<	CopyOnWriteArraySet full = populatedSet(3);
174	<	assertTrue(empty.isEmpty());
175	<	assertFalse(full.isEmpty());
171	>	public void testIterator() {
172	>	Collection empty = new CopyOnWriteArraySet();
173	>	assertFalse(empty.iterator().hasNext());
174	>	try {
175	>	empty.iterator().next();
176	>	shouldThrow();
177	>	} catch (NoSuchElementException success) {}
178	>
179	>	Integer[] elements = new Integer[SIZE];
180	>	for (int i = 0; i < SIZE; i++)
181	>	elements[i] = i;
182	>	Collections.shuffle(Arrays.asList(elements));
183	>	Collection<Integer> full = populatedSet(elements);
184	>
185	>	Iterator it = full.iterator();
186	>	for (int j = 0; j < SIZE; j++) {
187	>	assertTrue(it.hasNext());
188	>	assertEquals(elements[j], it.next());
189	>	}
190	>	assertIteratorExhausted(it);
191		}
192
193		/**
194	<	*   iterator() returns an iterator containing the elements of the list
194	>	* iterator of empty collection has no elements
195		*/
196	<	public void testIterator(){
197	<	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);
196	>	public void testEmptyIterator() {
197	>	assertIteratorExhausted(new CopyOnWriteArraySet().iterator());
198		}
199
200	<	public void testIteratorRemove () {
201	<	CopyOnWriteArraySet full = populatedSet(3);
200	>	/**
201	>	* iterator remove is unsupported
202	>	*/
203	>	public void testIteratorRemove() {
204	>	Collection full = populatedSet(3);
205		Iterator it = full.iterator();
206		it.next();
207		try {
208		it.remove();
209	<	fail("should throw");
210	<	}
170	<	catch (UnsupportedOperationException success) {}
209	>	shouldThrow();
210	>	} catch (UnsupportedOperationException success) {}
211		}
212
213	<	public void testToString(){
214	<	CopyOnWriteArraySet full = populatedSet(3);
213	>	/**
214	>	* toString holds toString of elements
215	>	*/
216	>	public void testToString() {
217	>	assertEquals("[]", new CopyOnWriteArraySet().toString());
218	>	Collection full = populatedSet(3);
219		String s = full.toString();
220	<	for (int i = 0; i < 3; ++i) {
221	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
222	<	}
223	<	}
224	<
220	>	for (int i = 0; i < 3; ++i)
221	>	assertTrue(s.contains(String.valueOf(i)));
222	>	assertEquals(new ArrayList(full).toString(),
223	>	full.toString());
224	>	}
225
226		/**
227	<	*   removeAll correctly removes all elements from the given collection
227	>	* removeAll removes all elements from the given collection
228		*/
229	<	public void testRemoveAll(){
230	<	CopyOnWriteArraySet full = populatedSet(3);
231	<	Vector v = new Vector();
232	<	v.add(one);
233	<	v.add(two);
234	<	full.removeAll(v);
191	<	assertEquals(1, full.size());
229	>	public void testRemoveAll() {
230	>	Set full = populatedSet(3);
231	>	assertTrue(full.removeAll(Arrays.asList(one, two)));
232	>	assertEquals(1, full.size());
233	>	assertFalse(full.removeAll(Arrays.asList(one, two)));
234	>	assertEquals(1, full.size());
235		}
236
237	<
238	<	public void testRemove(){
239	<	CopyOnWriteArraySet full = populatedSet(3);
240	<	full.remove(one);
237	>	/**
238	>	* remove removes an element
239	>	*/
240	>	public void testRemove() {
241	>	Collection full = populatedSet(3);
242	>	full.remove(one);
243		assertFalse(full.contains(one));
244	<	assertEquals(2, full.size());
244	>	assertEquals(2, full.size());
245		}
246
247		/**
248	<	*   size returns the correct values
248	>	* size returns the number of elements
249		*/
250	<	public void testSize(){
251	<	CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
252	<	CopyOnWriteArraySet full = populatedSet(3);
253	<	assertEquals(3, full.size());
254	<	assertEquals(0, empty.size());
250	>	public void testSize() {
251	>	Collection empty = new CopyOnWriteArraySet();
252	>	Collection full = populatedSet(3);
253	>	assertEquals(3, full.size());
254	>	assertEquals(0, empty.size());
255		}
256
257		/**
258	<	*   toArray returns an Object array containing all elements from the list
258	>	* toArray() returns an Object array containing all elements from
259	>	* the set in insertion order
260		*/
261	<	public void testToArray(){
262	<	CopyOnWriteArraySet full = populatedSet(3);
263	<	Object[] o = full.toArray();
264	<	assertEquals(3, o.length);
265	<	assertEquals(0, ((Integer)o[0]).intValue());
266	<	assertEquals(1, ((Integer)o[1]).intValue());
267	<	assertEquals(2, ((Integer)o[2]).intValue());
261	>	public void testToArray() {
262	>	Object[] a = new CopyOnWriteArraySet().toArray();
263	>	assertTrue(Arrays.equals(new Object[0], a));
264	>	assertSame(Object[].class, a.getClass());
265	>
266	>	Integer[] elements = new Integer[SIZE];
267	>	for (int i = 0; i < SIZE; i++)
268	>	elements[i] = i;
269	>	Collections.shuffle(Arrays.asList(elements));
270	>	Collection<Integer> full = populatedSet(elements);
271	>
272	>	assertTrue(Arrays.equals(elements, full.toArray()));
273	>	assertSame(Object[].class, full.toArray().getClass());
274		}
275
276		/**
277	<	*   toArray returns an Integer array containing all elements from the list
277	>	* toArray(Integer array) returns an Integer array containing all
278	>	* elements from the set in insertion order
279		*/
280	<	public void testToArray2(){
281	<	CopyOnWriteArraySet full = populatedSet(3);
282	<	Integer[] i = new Integer[3];
283	<	i = (Integer[])full.toArray(i);
284	<	assertEquals(3, i.length);
285	<	assertEquals(0, i[0].intValue());
233	<	assertEquals(1, i[1].intValue());
234	<	assertEquals(2, i[2].intValue());
235	<	}
280	>	public void testToArray2() {
281	>	Collection empty = new CopyOnWriteArraySet();
282	>	Integer[] a;
283	>
284	>	a = new Integer[0];
285	>	assertSame(a, empty.toArray(a));
286
287	+	a = new Integer[SIZE / 2];
288	+	Arrays.fill(a, 42);
289	+	assertSame(a, empty.toArray(a));
290	+	assertNull(a[0]);
291	+	for (int i = 1; i < a.length; i++)
292	+	assertEquals(42, (int) a[i]);
293
294	+	Integer[] elements = new Integer[SIZE];
295	+	for (int i = 0; i < SIZE; i++)
296	+	elements[i] = i;
297	+	Collections.shuffle(Arrays.asList(elements));
298	+	Collection<Integer> full = populatedSet(elements);
299
300	<	// Exception tests
300	>	Arrays.fill(a, 42);
301	>	assertTrue(Arrays.equals(elements, full.toArray(a)));
302	>	for (int i = 0; i < a.length; i++)
303	>	assertEquals(42, (int) a[i]);
304	>	assertSame(Integer[].class, full.toArray(a).getClass());
305	>
306	>	a = new Integer[SIZE];
307	>	Arrays.fill(a, 42);
308	>	assertSame(a, full.toArray(a));
309	>	assertTrue(Arrays.equals(elements, a));
310	>
311	>	a = new Integer[2 * SIZE];
312	>	Arrays.fill(a, 42);
313	>	assertSame(a, full.toArray(a));
314	>	assertTrue(Arrays.equals(elements, Arrays.copyOf(a, SIZE)));
315	>	assertNull(a[SIZE]);
316	>	for (int i = SIZE + 1; i < a.length; i++)
317	>	assertEquals(42, (int) a[i]);
318	>	}
319
320		/**
321	<	*   toArray throws an ArrayStoreException when the given array
322	<	*  can not store the objects inside the list
321	>	* toArray throws an ArrayStoreException when the given array can
322	>	* not store the objects inside the set
323		*/
324	<	public void testToArray_ArrayStoreException(){
325	<	try{
326	<	CopyOnWriteArraySet c = new CopyOnWriteArraySet();
327	<	c.add("zfasdfsdf");
328	<	c.add("asdadasd");
324	>	public void testToArray_ArrayStoreException() {
325	>	CopyOnWriteArraySet c = new CopyOnWriteArraySet();
326	>	c.add("zfasdfsdf");
327	>	c.add("asdadasd");
328	>	try {
329		c.toArray(new Long[5]);
330	<	fail("Object[] toArray(Object[]) should throw ArrayStoreException");
331	<	}catch(ArrayStoreException e){}
330	>	shouldThrow();
331	>	} catch (ArrayStoreException success) {}
332		}
333
334	<	public void testSerialization() {
335	<	CopyOnWriteArraySet q = populatedSet(SIZE);
334	>	/**
335	>	* A deserialized serialized set is equal
336	>	*/
337	>	public void testSerialization() throws Exception {
338	>	Set x = populatedSet(SIZE);
339	>	Set y = serialClone(x);
340	>
341	>	assertNotSame(y, x);
342	>	assertEquals(x.size(), y.size());
343	>	assertEquals(x.toString(), y.toString());
344	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
345	>	assertEquals(x, y);
346	>	assertEquals(y, x);
347	>	}
348
349	<	try {
350	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
351	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
352	<	out.writeObject(q);
353	<	out.close();
354	<
355	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
356	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
357	<	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	<	}
349	>	/**
350	>	* addAll is idempotent
351	>	*/
352	>	public void testAddAll_idempotent() throws Exception {
353	>	Set x = populatedSet(SIZE);
354	>	Set y = new CopyOnWriteArraySet(x);
355	>	y.addAll(x);
356	>	assertEquals(x, y);
357	>	assertEquals(y, x);
358		}
359
360		}

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