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Comparing jsr166/src/test/tck/CopyOnWriteArraySetTest.java (file contents):
Revision 1.18 by jsr166, Fri May 27 19:26:42 2011 UTC vs.
Revision 1.40 by jsr166, Thu Apr 5 02:20:21 2018 UTC

#	Line 6 | Line 6
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 {
21		public static void main(String[] args) {
22	<	junit.textui.TestRunner.run(suite());
22	>	main(suite(), args);
23		}
24		public static Test suite() {
25	<	return new TestSuite(CopyOnWriteArraySetTest.class);
25	>	class Implementation implements CollectionImplementation {
26	>	public Class<?> klazz() { return CopyOnWriteArraySet.class; }
27	>	public Set emptyCollection() { return new CopyOnWriteArraySet(); }
28	>	public Object makeElement(int i) { return i; }
29	>	public boolean isConcurrent() { return true; }
30	>	public boolean permitsNulls() { return true; }
31	>	}
32	>	return newTestSuite(
33	>	CopyOnWriteArraySetTest.class,
34	>	CollectionTest.testSuite(new Implementation()));
35		}
36
37	<	static CopyOnWriteArraySet populatedSet(int n) {
38	<	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
37	>	static CopyOnWriteArraySet<Integer> populatedSet(int n) {
38	>	CopyOnWriteArraySet<Integer> a = new CopyOnWriteArraySet<>();
39		assertTrue(a.isEmpty());
40	<	for (int i = 0; i < n; ++i)
41	<	a.add(new Integer(i));
42	<	assertFalse(a.isEmpty());
40	>	for (int i = 0; i < n; i++)
41	>	a.add(i);
42	>	assertEquals(n == 0, a.isEmpty());
43		assertEquals(n, a.size());
44		return a;
45		}
46
47	+	static CopyOnWriteArraySet populatedSet(Integer[] elements) {
48	+	CopyOnWriteArraySet<Integer> a = new CopyOnWriteArraySet<>();
49	+	assertTrue(a.isEmpty());
50	+	for (int i = 0; i < elements.length; i++)
51	+	a.add(elements[i]);
52	+	assertFalse(a.isEmpty());
53	+	assertEquals(elements.length, a.size());
54	+	return a;
55	+	}
56	+
57		/**
58		* Default-constructed set is empty
59		*/
#	Line 42 | Line 67 | public class CopyOnWriteArraySetTest ext
67		*/
68		public void testConstructor3() {
69		Integer[] ints = new Integer[SIZE];
70	<	for (int i = 0; i < SIZE-1; ++i)
70	>	for (int i = 0; i < SIZE - 1; ++i)
71		ints[i] = new Integer(i);
72		CopyOnWriteArraySet a = new CopyOnWriteArraySet(Arrays.asList(ints));
73		for (int i = 0; i < SIZE; ++i)
#	Line 50 | Line 75 | public class CopyOnWriteArraySetTest ext
75		}
76
77		/**
78	<	* addAll adds each element from the given collection
78	>	* addAll adds each non-duplicate element from the given collection
79		*/
80		public void testAddAll() {
81	<	CopyOnWriteArraySet full = populatedSet(3);
82	<	Vector v = new Vector();
83	<	v.add(three);
84	<	v.add(four);
60	<	v.add(five);
61	<	full.addAll(v);
81	>	Set full = populatedSet(3);
82	>	assertTrue(full.addAll(Arrays.asList(three, four, five)));
83	>	assertEquals(6, full.size());
84	>	assertFalse(full.addAll(Arrays.asList(three, four, five)));
85		assertEquals(6, full.size());
86		}
87
88		/**
89	<	* addAll adds each element from the given collection that did not
67	<	* already exist in the set
89	>	* addAll adds each non-duplicate element from the given collection
90		*/
91		public void testAddAll2() {
92	<	CopyOnWriteArraySet full = populatedSet(3);
93	<	Vector v = new Vector();
94	<	v.add(three);
95	<	v.add(four);
96	<	v.add(one); // will not add this element
75	<	full.addAll(v);
92	>	Set full = populatedSet(3);
93	>	// "one" is duplicate and will not be added
94	>	assertTrue(full.addAll(Arrays.asList(three, four, one)));
95	>	assertEquals(5, full.size());
96	>	assertFalse(full.addAll(Arrays.asList(three, four, one)));
97		assertEquals(5, full.size());
98		}
99
#	Line 80 | Line 101 | public class CopyOnWriteArraySetTest ext
101		* add will not add the element if it already exists in the set
102		*/
103		public void testAdd2() {
104	<	CopyOnWriteArraySet full = populatedSet(3);
104	>	Set full = populatedSet(3);
105		full.add(one);
106		assertEquals(3, full.size());
107		}
#	Line 89 | Line 110 | public class CopyOnWriteArraySetTest ext
110		* add adds the element when it does not exist in the set
111		*/
112		public void testAdd3() {
113	<	CopyOnWriteArraySet full = populatedSet(3);
113	>	Set full = populatedSet(3);
114		full.add(three);
115		assertTrue(full.contains(three));
116		}
#	Line 98 | Line 119 | public class CopyOnWriteArraySetTest ext
119		* clear removes all elements from the set
120		*/
121		public void testClear() {
122	<	CopyOnWriteArraySet full = populatedSet(3);
122	>	Collection full = populatedSet(3);
123		full.clear();
124		assertEquals(0, full.size());
125	+	assertTrue(full.isEmpty());
126		}
127
128		/**
129		* contains returns true for added elements
130		*/
131		public void testContains() {
132	<	CopyOnWriteArraySet full = populatedSet(3);
132	>	Collection full = populatedSet(3);
133		assertTrue(full.contains(one));
134		assertFalse(full.contains(five));
135		}
#	Line 120 | Line 142 | public class CopyOnWriteArraySetTest ext
142		CopyOnWriteArraySet b = populatedSet(3);
143		assertTrue(a.equals(b));
144		assertTrue(b.equals(a));
145	+	assertTrue(a.containsAll(b));
146	+	assertTrue(b.containsAll(a));
147		assertEquals(a.hashCode(), b.hashCode());
148	+	assertEquals(a.size(), b.size());
149	+
150		a.add(m1);
151		assertFalse(a.equals(b));
152		assertFalse(b.equals(a));
153	+	assertTrue(a.containsAll(b));
154	+	assertFalse(b.containsAll(a));
155		b.add(m1);
156		assertTrue(a.equals(b));
157		assertTrue(b.equals(a));
158	+	assertTrue(a.containsAll(b));
159	+	assertTrue(b.containsAll(a));
160		assertEquals(a.hashCode(), b.hashCode());
161	+
162	+	Object x = a.iterator().next();
163	+	a.remove(x);
164	+	assertFalse(a.equals(b));
165	+	assertFalse(b.equals(a));
166	+	assertFalse(a.containsAll(b));
167	+	assertTrue(b.containsAll(a));
168	+	a.add(x);
169	+	assertTrue(a.equals(b));
170	+	assertTrue(b.equals(a));
171	+	assertTrue(a.containsAll(b));
172	+	assertTrue(b.containsAll(a));
173	+	assertEquals(a.hashCode(), b.hashCode());
174	+	assertEquals(a.size(), b.size());
175	+
176	+	CopyOnWriteArraySet empty1 = new CopyOnWriteArraySet(Arrays.asList());
177	+	CopyOnWriteArraySet empty2 = new CopyOnWriteArraySet(Arrays.asList());
178	+	assertTrue(empty1.equals(empty1));
179	+	assertTrue(empty1.equals(empty2));
180	+
181	+	assertFalse(empty1.equals(a));
182	+	assertFalse(a.equals(empty1));
183	+
184	+	assertFalse(a.equals(null));
185		}
186
187		/**
188		* containsAll returns true for collections with subset of elements
189		*/
190		public void testContainsAll() {
191	<	CopyOnWriteArraySet full = populatedSet(3);
192	<	Vector v = new Vector();
193	<	v.add(one);
194	<	v.add(two);
195	<	assertTrue(full.containsAll(v));
196	<	v.add(six);
197	<	assertFalse(full.containsAll(v));
191	>	Collection full = populatedSet(3);
192	>	assertTrue(full.containsAll(full));
193	>	assertTrue(full.containsAll(Arrays.asList()));
194	>	assertTrue(full.containsAll(Arrays.asList(one)));
195	>	assertTrue(full.containsAll(Arrays.asList(one, two)));
196	>	assertFalse(full.containsAll(Arrays.asList(one, two, six)));
197	>	assertFalse(full.containsAll(Arrays.asList(six)));
198	>
199	>	CopyOnWriteArraySet empty1 = new CopyOnWriteArraySet(Arrays.asList());
200	>	CopyOnWriteArraySet empty2 = new CopyOnWriteArraySet(Arrays.asList());
201	>	assertTrue(empty1.containsAll(empty2));
202	>	assertTrue(empty1.containsAll(empty1));
203	>	assertFalse(empty1.containsAll(full));
204	>	assertTrue(full.containsAll(empty1));
205	>
206	>	try {
207	>	full.containsAll(null);
208	>	shouldThrow();
209	>	} catch (NullPointerException success) {}
210		}
211
212		/**
213		* isEmpty is true when empty, else false
214		*/
215		public void testIsEmpty() {
216	<	CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
217	<	CopyOnWriteArraySet full = populatedSet(3);
152	<	assertTrue(empty.isEmpty());
153	<	assertFalse(full.isEmpty());
216	>	assertTrue(populatedSet(0).isEmpty());
217	>	assertFalse(populatedSet(3).isEmpty());
218		}
219
220		/**
221	<	* iterator() returns an iterator containing the elements of the set
221	>	* iterator() returns an iterator containing the elements of the
222	>	* set in insertion order
223		*/
224		public void testIterator() {
225	<	CopyOnWriteArraySet full = populatedSet(3);
226	<	Iterator i = full.iterator();
227	<	int j;
228	<	for (j = 0; i.hasNext(); j++)
229	<	assertEquals(j, i.next());
230	<	assertEquals(3, j);
225	>	Collection empty = new CopyOnWriteArraySet();
226	>	assertFalse(empty.iterator().hasNext());
227	>	try {
228	>	empty.iterator().next();
229	>	shouldThrow();
230	>	} catch (NoSuchElementException success) {}
231	>
232	>	Integer[] elements = new Integer[SIZE];
233	>	for (int i = 0; i < SIZE; i++)
234	>	elements[i] = i;
235	>	shuffle(elements);
236	>	Collection<Integer> full = populatedSet(elements);
237	>
238	>	Iterator it = full.iterator();
239	>	for (int j = 0; j < SIZE; j++) {
240	>	assertTrue(it.hasNext());
241	>	assertEquals(elements[j], it.next());
242	>	}
243	>	assertIteratorExhausted(it);
244	>	}
245	>
246	>	/**
247	>	* iterator of empty collection has no elements
248	>	*/
249	>	public void testEmptyIterator() {
250	>	assertIteratorExhausted(new CopyOnWriteArraySet().iterator());
251		}
252
253		/**
254		* iterator remove is unsupported
255		*/
256		public void testIteratorRemove() {
257	<	CopyOnWriteArraySet full = populatedSet(3);
257	>	Collection full = populatedSet(3);
258		Iterator it = full.iterator();
259		it.next();
260		try {
#	Line 182 | Line 267 | public class CopyOnWriteArraySetTest ext
267		* toString holds toString of elements
268		*/
269		public void testToString() {
270	<	CopyOnWriteArraySet full = populatedSet(3);
270	>	assertEquals("[]", new CopyOnWriteArraySet().toString());
271	>	Collection full = populatedSet(3);
272		String s = full.toString();
273	<	for (int i = 0; i < 3; ++i) {
273	>	for (int i = 0; i < 3; ++i)
274		assertTrue(s.contains(String.valueOf(i)));
275	<	}
275	>	assertEquals(new ArrayList(full).toString(),
276	>	full.toString());
277		}
278
279		/**
280		* removeAll removes all elements from the given collection
281		*/
282		public void testRemoveAll() {
283	<	CopyOnWriteArraySet full = populatedSet(3);
284	<	Vector v = new Vector();
285	<	v.add(one);
286	<	v.add(two);
200	<	full.removeAll(v);
283	>	Set full = populatedSet(3);
284	>	assertTrue(full.removeAll(Arrays.asList(one, two)));
285	>	assertEquals(1, full.size());
286	>	assertFalse(full.removeAll(Arrays.asList(one, two)));
287		assertEquals(1, full.size());
288		}
289
#	Line 205 | Line 291 | public class CopyOnWriteArraySetTest ext
291		* remove removes an element
292		*/
293		public void testRemove() {
294	<	CopyOnWriteArraySet full = populatedSet(3);
294	>	Collection full = populatedSet(3);
295		full.remove(one);
296		assertFalse(full.contains(one));
297		assertEquals(2, full.size());
#	Line 215 | Line 301 | public class CopyOnWriteArraySetTest ext
301		* size returns the number of elements
302		*/
303		public void testSize() {
304	<	CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
305	<	CopyOnWriteArraySet full = populatedSet(3);
304	>	Collection empty = new CopyOnWriteArraySet();
305	>	Collection full = populatedSet(3);
306		assertEquals(3, full.size());
307		assertEquals(0, empty.size());
308		}
309
310		/**
311	<	* toArray returns an Object array containing all elements from the set
311	>	* toArray() returns an Object array containing all elements from
312	>	* the set in insertion order
313		*/
314		public void testToArray() {
315	<	CopyOnWriteArraySet full = populatedSet(3);
316	<	Object[] o = full.toArray();
317	<	assertEquals(3, o.length);
318	<	assertEquals(0, o[0]);
319	<	assertEquals(1, o[1]);
320	<	assertEquals(2, o[2]);
315	>	Object[] a = new CopyOnWriteArraySet().toArray();
316	>	assertTrue(Arrays.equals(new Object[0], a));
317	>	assertSame(Object[].class, a.getClass());
318	>
319	>	Integer[] elements = new Integer[SIZE];
320	>	for (int i = 0; i < SIZE; i++)
321	>	elements[i] = i;
322	>	shuffle(elements);
323	>	Collection<Integer> full = populatedSet(elements);
324	>
325	>	assertTrue(Arrays.equals(elements, full.toArray()));
326	>	assertSame(Object[].class, full.toArray().getClass());
327		}
328
329		/**
330	<	* toArray returns an Integer array containing all elements from
331	<	* the set
330	>	* toArray(Integer array) returns an Integer array containing all
331	>	* elements from the set in insertion order
332		*/
333		public void testToArray2() {
334	<	CopyOnWriteArraySet full = populatedSet(3);
335	<	Integer[] i = new Integer[3];
336	<	i = (Integer[])full.toArray(i);
337	<	assertEquals(3, i.length);
338	<	assertEquals(0, (int) i[0]);
339	<	assertEquals(1, (int) i[1]);
340	<	assertEquals(2, (int) i[2]);
334	>	Collection empty = new CopyOnWriteArraySet();
335	>	Integer[] a;
336	>
337	>	a = new Integer[0];
338	>	assertSame(a, empty.toArray(a));
339	>
340	>	a = new Integer[SIZE / 2];
341	>	Arrays.fill(a, 42);
342	>	assertSame(a, empty.toArray(a));
343	>	assertNull(a[0]);
344	>	for (int i = 1; i < a.length; i++)
345	>	assertEquals(42, (int) a[i]);
346	>
347	>	Integer[] elements = new Integer[SIZE];
348	>	for (int i = 0; i < SIZE; i++)
349	>	elements[i] = i;
350	>	shuffle(elements);
351	>	Collection<Integer> full = populatedSet(elements);
352	>
353	>	Arrays.fill(a, 42);
354	>	assertTrue(Arrays.equals(elements, full.toArray(a)));
355	>	for (int i = 0; i < a.length; i++)
356	>	assertEquals(42, (int) a[i]);
357	>	assertSame(Integer[].class, full.toArray(a).getClass());
358	>
359	>	a = new Integer[SIZE];
360	>	Arrays.fill(a, 42);
361	>	assertSame(a, full.toArray(a));
362	>	assertTrue(Arrays.equals(elements, a));
363	>
364	>	a = new Integer[2 * SIZE];
365	>	Arrays.fill(a, 42);
366	>	assertSame(a, full.toArray(a));
367	>	assertTrue(Arrays.equals(elements, Arrays.copyOf(a, SIZE)));
368	>	assertNull(a[SIZE]);
369	>	for (int i = SIZE + 1; i < a.length; i++)
370	>	assertEquals(42, (int) a[i]);
371		}
372
373		/**
#	Line 252 | Line 375 | public class CopyOnWriteArraySetTest ext
375		* not store the objects inside the set
376		*/
377		public void testToArray_ArrayStoreException() {
378	+	CopyOnWriteArraySet c = new CopyOnWriteArraySet();
379	+	c.add("zfasdfsdf");
380	+	c.add("asdadasd");
381		try {
256	–	CopyOnWriteArraySet c = new CopyOnWriteArraySet();
257	–	c.add("zfasdfsdf");
258	–	c.add("asdadasd");
382		c.toArray(new Long[5]);
383		shouldThrow();
384		} catch (ArrayStoreException success) {}
385		}
386
387		/**
388	<	* A deserialized serialized set is equal
388	>	* A deserialized/reserialized set equals original
389		*/
390		public void testSerialization() throws Exception {
391	<	CopyOnWriteArraySet q = populatedSet(SIZE);
391	>	Set x = populatedSet(SIZE);
392	>	Set y = serialClone(x);
393
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));
394	>	assertNotSame(y, x);
395	>	assertEquals(x.size(), y.size());
396	>	assertEquals(x.toString(), y.toString());
397	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
398	>	assertEquals(x, y);
399	>	assertEquals(y, x);
400	>	}
401	>
402	>	/**
403	>	* addAll is idempotent
404	>	*/
405	>	public void testAddAll_idempotent() throws Exception {
406	>	Set x = populatedSet(SIZE);
407	>	Set y = new CopyOnWriteArraySet(x);
408	>	y.addAll(x);
409	>	assertEquals(x, y);
410	>	assertEquals(y, x);
411		}
412
413		}

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