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Comparing jsr166/src/test/tck/CopyOnWriteArraySetTest.java (file contents):
Revision 1.10 by jsr166, Mon Nov 16 05:30:07 2009 UTC vs.
Revision 1.41 by jsr166, Tue May 8 00:25:33 2018 UTC

#	Line 1 | Line 1
1		/*
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/licenses/publicdomain
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
19		public class CopyOnWriteArraySetTest extends JSR166TestCase {
20		public static void main(String[] args) {
21	<	junit.textui.TestRunner.run (suite());
21	>	main(suite(), args);
22		}
23		public static Test suite() {
24	<	return new TestSuite(CopyOnWriteArraySetTest.class);
24	>	class Implementation implements CollectionImplementation {
25	>	public Class<?> klazz() { return CopyOnWriteArraySet.class; }
26	>	public Set emptyCollection() { return new CopyOnWriteArraySet(); }
27	>	public Object makeElement(int i) { return i; }
28	>	public boolean isConcurrent() { return true; }
29	>	public boolean permitsNulls() { return true; }
30	>	}
31	>	return newTestSuite(
32	>	CopyOnWriteArraySetTest.class,
33	>	CollectionTest.testSuite(new Implementation()));
34		}
35
36	<	static CopyOnWriteArraySet populatedSet(int n) {
37	<	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
36	>	static CopyOnWriteArraySet<Integer> populatedSet(int n) {
37	>	CopyOnWriteArraySet<Integer> a = new CopyOnWriteArraySet<>();
38		assertTrue(a.isEmpty());
39	<	for (int i = 0; i < n; ++i)
40	<	a.add(new Integer(i));
41	<	assertFalse(a.isEmpty());
39	>	for (int i = 0; i < n; i++)
40	>	a.add(i);
41	>	assertEquals(n == 0, a.isEmpty());
42		assertEquals(n, a.size());
43		return a;
44		}
45
46	+	static CopyOnWriteArraySet populatedSet(Integer[] elements) {
47	+	CopyOnWriteArraySet<Integer> a = new CopyOnWriteArraySet<>();
48	+	assertTrue(a.isEmpty());
49	+	for (int i = 0; i < elements.length; i++)
50	+	a.add(elements[i]);
51	+	assertFalse(a.isEmpty());
52	+	assertEquals(elements.length, a.size());
53	+	return a;
54	+	}
55	+
56		/**
57		* Default-constructed set is empty
58		*/
59		public void testConstructor() {
60	<	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
60	>	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
61		assertTrue(a.isEmpty());
62		}
63
#	Line 42 | Line 66 | public class CopyOnWriteArraySetTest ext
66		*/
67		public void testConstructor3() {
68		Integer[] ints = new Integer[SIZE];
69	<	for (int i = 0; i < SIZE-1; ++i)
69	>	for (int i = 0; i < SIZE - 1; ++i)
70		ints[i] = new Integer(i);
71	<	CopyOnWriteArraySet a = new CopyOnWriteArraySet(Arrays.asList(ints));
71	>	CopyOnWriteArraySet a = new CopyOnWriteArraySet(Arrays.asList(ints));
72		for (int i = 0; i < SIZE; ++i)
73		assertTrue(a.contains(ints[i]));
74		}
75
52	–
76		/**
77	<	*   addAll  adds each element from the given collection
77	>	* addAll adds each non-duplicate element from the given collection
78		*/
79		public void testAddAll() {
80	<	CopyOnWriteArraySet full = populatedSet(3);
81	<	Vector v = new Vector();
82	<	v.add(three);
83	<	v.add(four);
84	<	v.add(five);
62	<	full.addAll(v);
63	<	assertEquals(6, full.size());
80	>	Set full = populatedSet(3);
81	>	assertTrue(full.addAll(Arrays.asList(three, four, five)));
82	>	assertEquals(6, full.size());
83	>	assertFalse(full.addAll(Arrays.asList(three, four, five)));
84	>	assertEquals(6, full.size());
85		}
86
87		/**
88	<	*   addAll adds each element from the given collection that did not
68	<	*  already exist in the set
88	>	* addAll adds each non-duplicate element from the given collection
89		*/
90		public void testAddAll2() {
91	<	CopyOnWriteArraySet full = populatedSet(3);
92	<	Vector v = new Vector();
93	<	v.add(three);
94	<	v.add(four);
95	<	v.add(one); // will not add this element
96	<	full.addAll(v);
77	<	assertEquals(5, full.size());
91	>	Set full = populatedSet(3);
92	>	// "one" is duplicate and will not be added
93	>	assertTrue(full.addAll(Arrays.asList(three, four, one)));
94	>	assertEquals(5, full.size());
95	>	assertFalse(full.addAll(Arrays.asList(three, four, one)));
96	>	assertEquals(5, full.size());
97		}
98
99		/**
100	<	*   add will not add the element if it already exists in the set
100	>	* add will not add the element if it already exists in the set
101		*/
102		public void testAdd2() {
103	<	CopyOnWriteArraySet full = populatedSet(3);
104	<	full.add(one);
105	<	assertEquals(3, full.size());
103	>	Set full = populatedSet(3);
104	>	full.add(one);
105	>	assertEquals(3, full.size());
106		}
107
108		/**
109	<	*   add  adds the element when it does not exist
91	<	*   in the set
109	>	* add adds the element when it does not exist in the set
110		*/
111		public void testAdd3() {
112	<	CopyOnWriteArraySet full = populatedSet(3);
112	>	Set full = populatedSet(3);
113		full.add(three);
114		assertTrue(full.contains(three));
115		}
116
117		/**
118	<	*   clear  removes all elements from the set
118	>	* clear removes all elements from the set
119		*/
120		public void testClear() {
121	<	CopyOnWriteArraySet full = populatedSet(3);
122	<	full.clear();
123	<	assertEquals(0, full.size());
121	>	Collection full = populatedSet(3);
122	>	full.clear();
123	>	assertEquals(0, full.size());
124	>	assertTrue(full.isEmpty());
125		}
126
127		/**
128	<	*   contains returns true for added elements
128	>	* contains returns true for added elements
129		*/
130		public void testContains() {
131	<	CopyOnWriteArraySet full = populatedSet(3);
132	<	assertTrue(full.contains(one));
133	<	assertFalse(full.contains(five));
131	>	Collection full = populatedSet(3);
132	>	assertTrue(full.contains(one));
133	>	assertFalse(full.contains(five));
134		}
135
136		/**
137		* Sets with equal elements are equal
138		*/
139		public void testEquals() {
140	<	CopyOnWriteArraySet a = populatedSet(3);
141	<	CopyOnWriteArraySet b = populatedSet(3);
140	>	CopyOnWriteArraySet a = populatedSet(3);
141	>	CopyOnWriteArraySet b = populatedSet(3);
142		assertTrue(a.equals(b));
143		assertTrue(b.equals(a));
144	+	assertTrue(a.containsAll(b));
145	+	assertTrue(b.containsAll(a));
146		assertEquals(a.hashCode(), b.hashCode());
147	+	assertEquals(a.size(), b.size());
148	+
149		a.add(m1);
150		assertFalse(a.equals(b));
151		assertFalse(b.equals(a));
152	+	assertTrue(a.containsAll(b));
153	+	assertFalse(b.containsAll(a));
154		b.add(m1);
155		assertTrue(a.equals(b));
156		assertTrue(b.equals(a));
157	+	assertTrue(a.containsAll(b));
158	+	assertTrue(b.containsAll(a));
159		assertEquals(a.hashCode(), b.hashCode());
133	–	}
160
161	+	Object x = a.iterator().next();
162	+	a.remove(x);
163	+	assertFalse(a.equals(b));
164	+	assertFalse(b.equals(a));
165	+	assertFalse(a.containsAll(b));
166	+	assertTrue(b.containsAll(a));
167	+	a.add(x);
168	+	assertTrue(a.equals(b));
169	+	assertTrue(b.equals(a));
170	+	assertTrue(a.containsAll(b));
171	+	assertTrue(b.containsAll(a));
172	+	assertEquals(a.hashCode(), b.hashCode());
173	+	assertEquals(a.size(), b.size());
174	+
175	+	CopyOnWriteArraySet empty1 = new CopyOnWriteArraySet(Arrays.asList());
176	+	CopyOnWriteArraySet empty2 = new CopyOnWriteArraySet(Arrays.asList());
177	+	assertTrue(empty1.equals(empty1));
178	+	assertTrue(empty1.equals(empty2));
179	+
180	+	assertFalse(empty1.equals(a));
181	+	assertFalse(a.equals(empty1));
182	+
183	+	assertFalse(a.equals(null));
184	+	}
185
186		/**
187	<	*   containsAll returns true for collections with subset of elements
187	>	* containsAll returns true for collections with subset of elements
188		*/
189		public void testContainsAll() {
190	<	CopyOnWriteArraySet full = populatedSet(3);
191	<	Vector v = new Vector();
192	<	v.add(one);
193	<	v.add(two);
194	<	assertTrue(full.containsAll(v));
195	<	v.add(six);
196	<	assertFalse(full.containsAll(v));
190	>	Collection full = populatedSet(3);
191	>	assertTrue(full.containsAll(full));
192	>	assertTrue(full.containsAll(Arrays.asList()));
193	>	assertTrue(full.containsAll(Arrays.asList(one)));
194	>	assertTrue(full.containsAll(Arrays.asList(one, two)));
195	>	assertFalse(full.containsAll(Arrays.asList(one, two, six)));
196	>	assertFalse(full.containsAll(Arrays.asList(six)));
197	>
198	>	CopyOnWriteArraySet empty1 = new CopyOnWriteArraySet(Arrays.asList());
199	>	CopyOnWriteArraySet empty2 = new CopyOnWriteArraySet(Arrays.asList());
200	>	assertTrue(empty1.containsAll(empty2));
201	>	assertTrue(empty1.containsAll(empty1));
202	>	assertFalse(empty1.containsAll(full));
203	>	assertTrue(full.containsAll(empty1));
204	>
205	>	try {
206	>	full.containsAll(null);
207	>	shouldThrow();
208	>	} catch (NullPointerException success) {}
209		}
210
211		/**
212	<	*   isEmpty is true when empty, else false
212	>	* isEmpty is true when empty, else false
213		*/
214		public void testIsEmpty() {
215	<	CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
216	<	CopyOnWriteArraySet full = populatedSet(3);
155	<	assertTrue(empty.isEmpty());
156	<	assertFalse(full.isEmpty());
215	>	assertTrue(populatedSet(0).isEmpty());
216	>	assertFalse(populatedSet(3).isEmpty());
217		}
218
219		/**
220	<	*   iterator() returns an iterator containing the elements of the set
220	>	* iterator() returns an iterator containing the elements of the
221	>	* set in insertion order
222		*/
223		public void testIterator() {
224	<	CopyOnWriteArraySet full = populatedSet(3);
225	<	Iterator i = full.iterator();
226	<	int j;
227	<	for (j = 0; i.hasNext(); j++)
228	<	assertEquals(j, ((Integer)i.next()).intValue());
229	<	assertEquals(3, j);
224	>	Collection empty = new CopyOnWriteArraySet();
225	>	assertFalse(empty.iterator().hasNext());
226	>	try {
227	>	empty.iterator().next();
228	>	shouldThrow();
229	>	} catch (NoSuchElementException success) {}
230	>
231	>	Integer[] elements = new Integer[SIZE];
232	>	for (int i = 0; i < SIZE; i++)
233	>	elements[i] = i;
234	>	shuffle(elements);
235	>	Collection<Integer> full = populatedSet(elements);
236	>
237	>	Iterator it = full.iterator();
238	>	for (int j = 0; j < SIZE; j++) {
239	>	assertTrue(it.hasNext());
240	>	assertEquals(elements[j], it.next());
241	>	}
242	>	assertIteratorExhausted(it);
243	>	}
244	>
245	>	/**
246	>	* iterator of empty collection has no elements
247	>	*/
248	>	public void testEmptyIterator() {
249	>	assertIteratorExhausted(new CopyOnWriteArraySet().iterator());
250		}
251
252		/**
253		* iterator remove is unsupported
254		*/
255	<	public void testIteratorRemove () {
256	<	CopyOnWriteArraySet full = populatedSet(3);
255	>	public void testIteratorRemove() {
256	>	Collection full = populatedSet(3);
257		Iterator it = full.iterator();
258		it.next();
259		try {
260		it.remove();
261		shouldThrow();
262	<	}
182	<	catch (UnsupportedOperationException success) {}
262	>	} catch (UnsupportedOperationException success) {}
263		}
264
265		/**
266		* toString holds toString of elements
267		*/
268		public void testToString() {
269	<	CopyOnWriteArraySet full = populatedSet(3);
269	>	assertEquals("[]", new CopyOnWriteArraySet().toString());
270	>	Collection full = populatedSet(3);
271		String s = full.toString();
272	<	for (int i = 0; i < 3; ++i) {
273	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
274	<	}
272	>	for (int i = 0; i < 3; ++i)
273	>	assertTrue(s.contains(String.valueOf(i)));
274	>	assertEquals(new ArrayList(full).toString(),
275	>	full.toString());
276		}
277
196	–
278		/**
279	<	*   removeAll  removes all elements from the given collection
279	>	* removeAll removes all elements from the given collection
280		*/
281		public void testRemoveAll() {
282	<	CopyOnWriteArraySet full = populatedSet(3);
283	<	Vector v = new Vector();
284	<	v.add(one);
285	<	v.add(two);
286	<	full.removeAll(v);
206	<	assertEquals(1, full.size());
282	>	Set full = populatedSet(3);
283	>	assertTrue(full.removeAll(Arrays.asList(one, two)));
284	>	assertEquals(1, full.size());
285	>	assertFalse(full.removeAll(Arrays.asList(one, two)));
286	>	assertEquals(1, full.size());
287		}
288
209	–
289		/**
290		* remove removes an element
291		*/
292		public void testRemove() {
293	<	CopyOnWriteArraySet full = populatedSet(3);
294	<	full.remove(one);
293	>	Collection full = populatedSet(3);
294	>	full.remove(one);
295		assertFalse(full.contains(one));
296	<	assertEquals(2, full.size());
296	>	assertEquals(2, full.size());
297		}
298
299		/**
300	<	*   size returns the number of elements
300	>	* size returns the number of elements
301		*/
302		public void testSize() {
303	<	CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
304	<	CopyOnWriteArraySet full = populatedSet(3);
305	<	assertEquals(3, full.size());
306	<	assertEquals(0, empty.size());
303	>	Collection empty = new CopyOnWriteArraySet();
304	>	Collection full = populatedSet(3);
305	>	assertEquals(3, full.size());
306	>	assertEquals(0, empty.size());
307		}
308
309		/**
310	<	*   toArray returns an Object array containing all elements from the set
310	>	* toArray() returns an Object array containing all elements from
311	>	* the set in insertion order
312		*/
313		public void testToArray() {
314	<	CopyOnWriteArraySet full = populatedSet(3);
315	<	Object[] o = full.toArray();
316	<	assertEquals(3, o.length);
317	<	assertEquals(0, ((Integer)o[0]).intValue());
318	<	assertEquals(1, ((Integer)o[1]).intValue());
319	<	assertEquals(2, ((Integer)o[2]).intValue());
314	>	Object[] a = new CopyOnWriteArraySet().toArray();
315	>	assertTrue(Arrays.equals(new Object[0], a));
316	>	assertSame(Object[].class, a.getClass());
317	>
318	>	Integer[] elements = new Integer[SIZE];
319	>	for (int i = 0; i < SIZE; i++)
320	>	elements[i] = i;
321	>	shuffle(elements);
322	>	Collection<Integer> full = populatedSet(elements);
323	>
324	>	assertTrue(Arrays.equals(elements, full.toArray()));
325	>	assertSame(Object[].class, full.toArray().getClass());
326		}
327
328		/**
329	<	*   toArray returns an Integer array containing all elements from
330	<	*   the set
329	>	* toArray(Integer array) returns an Integer array containing all
330	>	* elements from the set in insertion order
331		*/
332		public void testToArray2() {
333	<	CopyOnWriteArraySet full = populatedSet(3);
334	<	Integer[] i = new Integer[3];
249	<	i = (Integer[])full.toArray(i);
250	<	assertEquals(3, i.length);
251	<	assertEquals(0, i[0].intValue());
252	<	assertEquals(1, i[1].intValue());
253	<	assertEquals(2, i[2].intValue());
254	<	}
333	>	Collection empty = new CopyOnWriteArraySet();
334	>	Integer[] a;
335
336	+	a = new Integer[0];
337	+	assertSame(a, empty.toArray(a));
338	+
339	+	a = new Integer[SIZE / 2];
340	+	Arrays.fill(a, 42);
341	+	assertSame(a, empty.toArray(a));
342	+	assertNull(a[0]);
343	+	for (int i = 1; i < a.length; i++)
344	+	assertEquals(42, (int) a[i]);
345	+
346	+	Integer[] elements = new Integer[SIZE];
347	+	for (int i = 0; i < SIZE; i++)
348	+	elements[i] = i;
349	+	shuffle(elements);
350	+	Collection<Integer> full = populatedSet(elements);
351	+
352	+	Arrays.fill(a, 42);
353	+	assertTrue(Arrays.equals(elements, full.toArray(a)));
354	+	for (int i = 0; i < a.length; i++)
355	+	assertEquals(42, (int) a[i]);
356	+	assertSame(Integer[].class, full.toArray(a).getClass());
357	+
358	+	a = new Integer[SIZE];
359	+	Arrays.fill(a, 42);
360	+	assertSame(a, full.toArray(a));
361	+	assertTrue(Arrays.equals(elements, a));
362	+
363	+	a = new Integer[2 * SIZE];
364	+	Arrays.fill(a, 42);
365	+	assertSame(a, full.toArray(a));
366	+	assertTrue(Arrays.equals(elements, Arrays.copyOf(a, SIZE)));
367	+	assertNull(a[SIZE]);
368	+	for (int i = SIZE + 1; i < a.length; i++)
369	+	assertEquals(42, (int) a[i]);
370	+	}
371
372		/**
373	<	*  toArray throws an ArrayStoreException when the given array can
374	<	*  not store the objects inside the set
373	>	* toArray throws an ArrayStoreException when the given array can
374	>	* not store the objects inside the set
375		*/
376		public void testToArray_ArrayStoreException() {
377	+	CopyOnWriteArraySet c = new CopyOnWriteArraySet();
378	+	c.add("zfasdfsdf");
379	+	c.add("asdadasd");
380		try {
263	–	CopyOnWriteArraySet c = new CopyOnWriteArraySet();
264	–	c.add("zfasdfsdf");
265	–	c.add("asdadasd");
381		c.toArray(new Long[5]);
382	<	shouldThrow();
383	<	} catch (ArrayStoreException e) {}
382	>	shouldThrow();
383	>	} catch (ArrayStoreException success) {}
384		}
385
386		/**
387	<	* A deserialized serialized set is equal
387	>	* A deserialized/reserialized set equals original
388		*/
389	<	public void testSerialization() {
390	<	CopyOnWriteArraySet q = populatedSet(SIZE);
389	>	public void testSerialization() throws Exception {
390	>	Set x = populatedSet(SIZE);
391	>	Set y = serialClone(x);
392
393	<	try {
394	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
395	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
396	<	out.writeObject(q);
397	<	out.close();
398	<
399	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
400	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
401	<	CopyOnWriteArraySet r = (CopyOnWriteArraySet)in.readObject();
402	<	assertEquals(q.size(), r.size());
403	<	assertTrue(q.equals(r));
404	<	assertTrue(r.equals(q));
405	<	} catch (Exception e) {
406	<	unexpectedException();
407	<	}
393	>	assertNotSame(y, x);
394	>	assertEquals(x.size(), y.size());
395	>	assertEquals(x.toString(), y.toString());
396	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
397	>	assertEquals(x, y);
398	>	assertEquals(y, x);
399	>	}
400	>
401	>	/**
402	>	* addAll is idempotent
403	>	*/
404	>	public void testAddAll_idempotent() throws Exception {
405	>	Set x = populatedSet(SIZE);
406	>	Set y = new CopyOnWriteArraySet(x);
407	>	y.addAll(x);
408	>	assertEquals(x, y);
409	>	assertEquals(y, x);
410		}
411
412		}

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