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

Comparing jsr166/src/test/tck/CopyOnWriteArraySetTest.java (file contents):
Revision 1.13 by jsr166, Sat Nov 21 17:38:05 2009 UTC vs.
Revision 1.28 by jsr166, Wed Dec 31 19:05:42 2014 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.Collections;
13	>	import java.util.Iterator;
14	>	import java.util.NoSuchElementException;
15	>	import java.util.Set;
16	>	import java.util.Vector;
17	>	import java.util.concurrent.CopyOnWriteArraySet;
18	>
19	>	import junit.framework.Test;
20	>	import junit.framework.TestSuite;
21
22		public class CopyOnWriteArraySetTest extends JSR166TestCase {
23		public static void main(String[] args) {
24	<	junit.textui.TestRunner.run (suite());
24	>	junit.textui.TestRunner.run(suite());
25		}
26		public static Test suite() {
27		return new TestSuite(CopyOnWriteArraySetTest.class);
28		}
29
30	<	static CopyOnWriteArraySet populatedSet(int n) {
31	<	CopyOnWriteArraySet a = new CopyOnWriteArraySet();
30	>	static CopyOnWriteArraySet<Integer> populatedSet(int n) {
31	>	CopyOnWriteArraySet<Integer> a = new CopyOnWriteArraySet<Integer>();
32		assertTrue(a.isEmpty());
33	<	for (int i = 0; i < n; ++i)
34	<	a.add(new Integer(i));
33	>	for (int i = 0; i < n; i++)
34	>	a.add(i);
35		assertFalse(a.isEmpty());
36		assertEquals(n, a.size());
37		return a;
38		}
39
40	+	static CopyOnWriteArraySet populatedSet(Integer[] elements) {
41	+	CopyOnWriteArraySet<Integer> a = new CopyOnWriteArraySet<Integer>();
42	+	assertTrue(a.isEmpty());
43	+	for (int i = 0; i < elements.length; i++)
44	+	a.add(elements[i]);
45	+	assertFalse(a.isEmpty());
46	+	assertEquals(elements.length, a.size());
47	+	return a;
48	+	}
49	+
50		/**
51		* Default-constructed set is empty
52		*/
#	Line 49 | Line 67 | public class CopyOnWriteArraySetTest ext
67		assertTrue(a.contains(ints[i]));
68		}
69
52	–
70		/**
71	<	*  addAll adds each element from the given collection
71	>	* addAll adds each element from the given collection
72		*/
73		public void testAddAll() {
74		CopyOnWriteArraySet full = populatedSet(3);
#	Line 64 | Line 81 | public class CopyOnWriteArraySetTest ext
81		}
82
83		/**
84	<	*  addAll adds each element from the given collection that did not
85	<	*  already exist in the set
84	>	* addAll adds each element from the given collection that did not
85	>	* already exist in the set
86		*/
87		public void testAddAll2() {
88		CopyOnWriteArraySet full = populatedSet(3);
#	Line 78 | Line 95 | public class CopyOnWriteArraySetTest ext
95		}
96
97		/**
98	<	*  add will not add the element if it already exists in the set
98	>	* add will not add the element if it already exists in the set
99		*/
100		public void testAdd2() {
101		CopyOnWriteArraySet full = populatedSet(3);
#	Line 87 | Line 104 | public class CopyOnWriteArraySetTest ext
104		}
105
106		/**
107	<	*  add  adds the element when it does not exist
91	<	*  in the set
107	>	* add adds the element when it does not exist in the set
108		*/
109		public void testAdd3() {
110		CopyOnWriteArraySet full = populatedSet(3);
#	Line 97 | Line 113 | public class CopyOnWriteArraySetTest ext
113		}
114
115		/**
116	<	*  clear removes all elements from the set
116	>	* clear removes all elements from the set
117		*/
118		public void testClear() {
119		CopyOnWriteArraySet full = populatedSet(3);
#	Line 106 | Line 122 | public class CopyOnWriteArraySetTest ext
122		}
123
124		/**
125	<	*   contains returns true for added elements
125	>	* contains returns true for added elements
126		*/
127		public void testContains() {
128		CopyOnWriteArraySet full = populatedSet(3);
#	Line 132 | Line 148 | public class CopyOnWriteArraySetTest ext
148		assertEquals(a.hashCode(), b.hashCode());
149		}
150
135	–
151		/**
152	<	*  containsAll returns true for collections with subset of elements
152	>	* containsAll returns true for collections with subset of elements
153		*/
154		public void testContainsAll() {
155		CopyOnWriteArraySet full = populatedSet(3);
#	Line 147 | Line 162 | public class CopyOnWriteArraySetTest ext
162		}
163
164		/**
165	<	*  isEmpty is true when empty, else false
165	>	* isEmpty is true when empty, else false
166		*/
167		public void testIsEmpty() {
168		CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
#	Line 157 | Line 172 | public class CopyOnWriteArraySetTest ext
172		}
173
174		/**
175	<	*  iterator() returns an iterator containing the elements of the set
175	>	* iterator() returns an iterator containing the elements of the
176	>	* set in insertion order
177		*/
178		public void testIterator() {
179	<	CopyOnWriteArraySet full = populatedSet(3);
180	<	Iterator i = full.iterator();
181	<	int j;
182	<	for (j = 0; i.hasNext(); j++)
183	<	assertEquals(j, ((Integer)i.next()).intValue());
184	<	assertEquals(3, j);
179	>	Collection empty = new CopyOnWriteArraySet();
180	>	assertFalse(empty.iterator().hasNext());
181	>	try {
182	>	empty.iterator().next();
183	>	shouldThrow();
184	>	} catch (NoSuchElementException success) {}
185	>
186	>	Integer[] elements = new Integer[SIZE];
187	>	for (int i = 0; i < SIZE; i++)
188	>	elements[i] = i;
189	>	Collections.shuffle(Arrays.asList(elements));
190	>	Collection<Integer> full = populatedSet(elements);
191	>
192	>	Iterator it = full.iterator();
193	>	for (int j = 0; j < SIZE; j++) {
194	>	assertTrue(it.hasNext());
195	>	assertEquals(elements[j], it.next());
196	>	}
197	>	assertFalse(it.hasNext());
198	>	try {
199	>	it.next();
200	>	shouldThrow();
201	>	} catch (NoSuchElementException success) {}
202		}
203
204		/**
205		* iterator remove is unsupported
206		*/
207	<	public void testIteratorRemove () {
207	>	public void testIteratorRemove() {
208		CopyOnWriteArraySet full = populatedSet(3);
209		Iterator it = full.iterator();
210		it.next();
#	Line 185 | Line 218 | public class CopyOnWriteArraySetTest ext
218		* toString holds toString of elements
219		*/
220		public void testToString() {
221	+	assertEquals("[]", new CopyOnWriteArraySet().toString());
222		CopyOnWriteArraySet full = populatedSet(3);
223		String s = full.toString();
224	<	for (int i = 0; i < 3; ++i) {
225	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
226	<	}
224	>	for (int i = 0; i < 3; ++i)
225	>	assertTrue(s.contains(String.valueOf(i)));
226	>	assertEquals(new ArrayList(full).toString(),
227	>	full.toString());
228		}
229
195	–
230		/**
231	<	*  removeAll  removes all elements from the given collection
231	>	* removeAll removes all elements from the given collection
232		*/
233		public void testRemoveAll() {
234		CopyOnWriteArraySet full = populatedSet(3);
#	Line 205 | Line 239 | public class CopyOnWriteArraySetTest ext
239		assertEquals(1, full.size());
240		}
241
208	–
242		/**
243		* remove removes an element
244		*/
#	Line 217 | Line 250 | public class CopyOnWriteArraySetTest ext
250		}
251
252		/**
253	<	*  size returns the number of elements
253	>	* size returns the number of elements
254		*/
255		public void testSize() {
256		CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
#	Line 227 | Line 260 | public class CopyOnWriteArraySetTest ext
260		}
261
262		/**
263	<	*  toArray returns an Object array containing all elements from the set
263	>	* toArray() returns an Object array containing all elements from
264	>	* the set in insertion order
265		*/
266		public void testToArray() {
267	<	CopyOnWriteArraySet full = populatedSet(3);
268	<	Object[] o = full.toArray();
269	<	assertEquals(3, o.length);
270	<	assertEquals(0, ((Integer)o[0]).intValue());
271	<	assertEquals(1, ((Integer)o[1]).intValue());
272	<	assertEquals(2, ((Integer)o[2]).intValue());
267	>	Object[] a = new CopyOnWriteArraySet().toArray();
268	>	assertTrue(Arrays.equals(new Object[0], a));
269	>	assertSame(Object[].class, a.getClass());
270	>
271	>	Integer[] elements = new Integer[SIZE];
272	>	for (int i = 0; i < SIZE; i++)
273	>	elements[i] = i;
274	>	Collections.shuffle(Arrays.asList(elements));
275	>	Collection<Integer> full = populatedSet(elements);
276	>
277	>	assertTrue(Arrays.equals(elements, full.toArray()));
278	>	assertSame(Object[].class, full.toArray().getClass());
279		}
280
281		/**
282	<	*  toArray returns an Integer array containing all elements from
283	<	*  the set
282	>	* toArray(Integer array) returns an Integer array containing all
283	>	* elements from the set in insertion order
284		*/
285		public void testToArray2() {
286	<	CopyOnWriteArraySet full = populatedSet(3);
287	<	Integer[] i = new Integer[3];
248	<	i = (Integer[])full.toArray(i);
249	<	assertEquals(3, i.length);
250	<	assertEquals(0, i[0].intValue());
251	<	assertEquals(1, i[1].intValue());
252	<	assertEquals(2, i[2].intValue());
253	<	}
286	>	Collection empty = new CopyOnWriteArraySet();
287	>	Integer[] a;
288
289	+	a = new Integer[0];
290	+	assertSame(a, empty.toArray(a));
291	+
292	+	a = new Integer[SIZE/2];
293	+	Arrays.fill(a, 42);
294	+	assertSame(a, empty.toArray(a));
295	+	assertNull(a[0]);
296	+	for (int i = 1; i < a.length; i++)
297	+	assertEquals(42, (int) a[i]);
298	+
299	+	Integer[] elements = new Integer[SIZE];
300	+	for (int i = 0; i < SIZE; i++)
301	+	elements[i] = i;
302	+	Collections.shuffle(Arrays.asList(elements));
303	+	Collection<Integer> full = populatedSet(elements);
304	+
305	+	Arrays.fill(a, 42);
306	+	assertTrue(Arrays.equals(elements, full.toArray(a)));
307	+	for (int i = 0; i < a.length; i++)
308	+	assertEquals(42, (int) a[i]);
309	+	assertSame(Integer[].class, full.toArray(a).getClass());
310	+
311	+	a = new Integer[SIZE];
312	+	Arrays.fill(a, 42);
313	+	assertSame(a, full.toArray(a));
314	+	assertTrue(Arrays.equals(elements, a));
315	+
316	+	a = new Integer[2*SIZE];
317	+	Arrays.fill(a, 42);
318	+	assertSame(a, full.toArray(a));
319	+	assertTrue(Arrays.equals(elements, Arrays.copyOf(a, SIZE)));
320	+	assertNull(a[SIZE]);
321	+	for (int i = SIZE + 1; i < a.length; i++)
322	+	assertEquals(42, (int) a[i]);
323	+	}
324
325		/**
326	<	*  toArray throws an ArrayStoreException when the given array can
327	<	*  not store the objects inside the set
326	>	* toArray throws an ArrayStoreException when the given array can
327	>	* not store the objects inside the set
328		*/
329		public void testToArray_ArrayStoreException() {
330		try {
#	Line 271 | Line 340 | public class CopyOnWriteArraySetTest ext
340		* A deserialized serialized set is equal
341		*/
342		public void testSerialization() throws Exception {
343	<	CopyOnWriteArraySet q = populatedSet(SIZE);
343	>	Set x = populatedSet(SIZE);
344	>	Set y = serialClone(x);
345
346	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
347	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
348	<	out.writeObject(q);
349	<	out.close();
350	<
351	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
352	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
353	<	CopyOnWriteArraySet r = (CopyOnWriteArraySet)in.readObject();
354	<	assertEquals(q.size(), r.size());
355	<	assertTrue(q.equals(r));
356	<	assertTrue(r.equals(q));
346	>	assertNotSame(y, x);
347	>	assertEquals(x.size(), y.size());
348	>	assertEquals(x.toString(), y.toString());
349	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
350	>	assertEquals(x, y);
351	>	assertEquals(y, x);
352	>	}
353	>
354	>	/**
355	>	* addAll is idempotent
356	>	*/
357	>	public void testAddAll_idempotent() throws Exception {
358	>	Set x = populatedSet(SIZE);
359	>	Set y = new CopyOnWriteArraySet(x);
360	>	y.addAll(x);
361	>	assertEquals(x, y);
362	>	assertEquals(y, x);
363		}
364
365		}

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