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

Comparing jsr166/src/test/tck/CopyOnWriteArraySetTest.java (file contents):
Revision 1.12 by jsr166, Sat Nov 21 10:25:05 2009 UTC vs.
Revision 1.27 by jsr166, Thu May 30 03:28:55 2013 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.*;
10	>	import java.util.ArrayList;
11	>	import java.util.Arrays;
12	>	import java.util.Collection;
13	>	import java.util.Collections;
14	>	import java.util.Iterator;
15	>	import java.util.NoSuchElementException;
16	>	import java.util.Set;
17	>	import java.util.Vector;
18	>	import java.util.concurrent.CopyOnWriteArraySet;
19
20		public class CopyOnWriteArraySetTest extends JSR166TestCase {
21		public static void main(String[] args) {
22	<	junit.textui.TestRunner.run (suite());
22	>	junit.textui.TestRunner.run(suite());
23		}
24		public static Test suite() {
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<Integer>();
30		assertTrue(a.isEmpty());
31	<	for (int i = 0; i < n; ++i)
32	<	a.add(new Integer(i));
31	>	for (int i = 0; i < n; i++)
32	>	a.add(i);
33		assertFalse(a.isEmpty());
34		assertEquals(n, a.size());
35		return a;
36		}
37
38	+	static CopyOnWriteArraySet populatedSet(Integer[] elements) {
39	+	CopyOnWriteArraySet<Integer> a = new CopyOnWriteArraySet<Integer>();
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		*/
#	Line 49 | Line 65 | public class CopyOnWriteArraySetTest ext
65		assertTrue(a.contains(ints[i]));
66		}
67
52	–
68		/**
69	<	*  addAll adds each element from the given collection
69	>	* addAll adds each element from the given collection
70		*/
71		public void testAddAll() {
72		CopyOnWriteArraySet full = populatedSet(3);
#	Line 64 | Line 79 | public class CopyOnWriteArraySetTest ext
79		}
80
81		/**
82	<	*  addAll adds each element from the given collection that did not
83	<	*  already exist in the set
82	>	* addAll adds each element from the given collection that did not
83	>	* already exist in the set
84		*/
85		public void testAddAll2() {
86		CopyOnWriteArraySet full = populatedSet(3);
#	Line 78 | Line 93 | public class CopyOnWriteArraySetTest ext
93		}
94
95		/**
96	<	*  add will not add the element if it already exists in the set
96	>	* add will not add the element if it already exists in the set
97		*/
98		public void testAdd2() {
99		CopyOnWriteArraySet full = populatedSet(3);
#	Line 87 | Line 102 | public class CopyOnWriteArraySetTest ext
102		}
103
104		/**
105	<	*  add  adds the element when it does not exist
91	<	*  in the set
105	>	* add adds the element when it does not exist in the set
106		*/
107		public void testAdd3() {
108		CopyOnWriteArraySet full = populatedSet(3);
#	Line 97 | Line 111 | public class CopyOnWriteArraySetTest ext
111		}
112
113		/**
114	<	*  clear removes all elements from the set
114	>	* clear removes all elements from the set
115		*/
116		public void testClear() {
117		CopyOnWriteArraySet full = populatedSet(3);
#	Line 106 | Line 120 | public class CopyOnWriteArraySetTest ext
120		}
121
122		/**
123	<	*   contains returns true for added elements
123	>	* contains returns true for added elements
124		*/
125		public void testContains() {
126		CopyOnWriteArraySet full = populatedSet(3);
#	Line 132 | Line 146 | public class CopyOnWriteArraySetTest ext
146		assertEquals(a.hashCode(), b.hashCode());
147		}
148
135	–
149		/**
150	<	*  containsAll returns true for collections with subset of elements
150	>	* containsAll returns true for collections with subset of elements
151		*/
152		public void testContainsAll() {
153		CopyOnWriteArraySet full = populatedSet(3);
#	Line 147 | Line 160 | public class CopyOnWriteArraySetTest ext
160		}
161
162		/**
163	<	*  isEmpty is true when empty, else false
163	>	* isEmpty is true when empty, else false
164		*/
165		public void testIsEmpty() {
166		CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
#	Line 157 | Line 170 | public class CopyOnWriteArraySetTest ext
170		}
171
172		/**
173	<	*  iterator() returns an iterator containing the elements of the set
173	>	* iterator() returns an iterator containing the elements of the
174	>	* set in insertion order
175		*/
176		public void testIterator() {
177	<	CopyOnWriteArraySet full = populatedSet(3);
178	<	Iterator i = full.iterator();
179	<	int j;
180	<	for (j = 0; i.hasNext(); j++)
181	<	assertEquals(j, ((Integer)i.next()).intValue());
182	<	assertEquals(3, j);
177	>	Collection empty = new CopyOnWriteArraySet();
178	>	assertFalse(empty.iterator().hasNext());
179	>	try {
180	>	empty.iterator().next();
181	>	shouldThrow();
182	>	} catch (NoSuchElementException success) {}
183	>
184	>	Integer[] elements = new Integer[SIZE];
185	>	for (int i = 0; i < SIZE; i++)
186	>	elements[i] = i;
187	>	Collections.shuffle(Arrays.asList(elements));
188	>	Collection<Integer> full = populatedSet(elements);
189	>
190	>	Iterator it = full.iterator();
191	>	for (int j = 0; j < SIZE; j++) {
192	>	assertTrue(it.hasNext());
193	>	assertEquals(elements[j], it.next());
194	>	}
195	>	assertFalse(it.hasNext());
196	>	try {
197	>	it.next();
198	>	shouldThrow();
199	>	} catch (NoSuchElementException success) {}
200		}
201
202		/**
203		* iterator remove is unsupported
204		*/
205	<	public void testIteratorRemove () {
205	>	public void testIteratorRemove() {
206		CopyOnWriteArraySet full = populatedSet(3);
207		Iterator it = full.iterator();
208		it.next();
#	Line 185 | Line 216 | public class CopyOnWriteArraySetTest ext
216		* toString holds toString of elements
217		*/
218		public void testToString() {
219	+	assertEquals("[]", new CopyOnWriteArraySet().toString());
220		CopyOnWriteArraySet full = populatedSet(3);
221		String s = full.toString();
222	<	for (int i = 0; i < 3; ++i) {
223	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
224	<	}
222	>	for (int i = 0; i < 3; ++i)
223	>	assertTrue(s.contains(String.valueOf(i)));
224	>	assertEquals(new ArrayList(full).toString(),
225	>	full.toString());
226		}
227
195	–
228		/**
229	<	*  removeAll  removes all elements from the given collection
229	>	* removeAll removes all elements from the given collection
230		*/
231		public void testRemoveAll() {
232		CopyOnWriteArraySet full = populatedSet(3);
#	Line 205 | Line 237 | public class CopyOnWriteArraySetTest ext
237		assertEquals(1, full.size());
238		}
239
208	–
240		/**
241		* remove removes an element
242		*/
#	Line 217 | Line 248 | public class CopyOnWriteArraySetTest ext
248		}
249
250		/**
251	<	*  size returns the number of elements
251	>	* size returns the number of elements
252		*/
253		public void testSize() {
254		CopyOnWriteArraySet empty = new CopyOnWriteArraySet();
#	Line 227 | Line 258 | public class CopyOnWriteArraySetTest ext
258		}
259
260		/**
261	<	*  toArray returns an Object array containing all elements from the set
261	>	* toArray() returns an Object array containing all elements from
262	>	* the set in insertion order
263		*/
264		public void testToArray() {
265	<	CopyOnWriteArraySet full = populatedSet(3);
266	<	Object[] o = full.toArray();
267	<	assertEquals(3, o.length);
268	<	assertEquals(0, ((Integer)o[0]).intValue());
269	<	assertEquals(1, ((Integer)o[1]).intValue());
270	<	assertEquals(2, ((Integer)o[2]).intValue());
265	>	Object[] a = new CopyOnWriteArraySet().toArray();
266	>	assertTrue(Arrays.equals(new Object[0], a));
267	>	assertSame(Object[].class, a.getClass());
268	>
269	>	Integer[] elements = new Integer[SIZE];
270	>	for (int i = 0; i < SIZE; i++)
271	>	elements[i] = i;
272	>	Collections.shuffle(Arrays.asList(elements));
273	>	Collection<Integer> full = populatedSet(elements);
274	>
275	>	assertTrue(Arrays.equals(elements, full.toArray()));
276	>	assertSame(Object[].class, full.toArray().getClass());
277		}
278
279		/**
280	<	*  toArray returns an Integer array containing all elements from
281	<	*  the set
280	>	* toArray(Integer array) returns an Integer array containing all
281	>	* elements from the set in insertion order
282		*/
283		public void testToArray2() {
284	<	CopyOnWriteArraySet full = populatedSet(3);
285	<	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	<	}
284	>	Collection empty = new CopyOnWriteArraySet();
285	>	Integer[] a;
286
287	+	a = new Integer[0];
288	+	assertSame(a, empty.toArray(a));
289	+
290	+	a = new Integer[SIZE/2];
291	+	Arrays.fill(a, 42);
292	+	assertSame(a, empty.toArray(a));
293	+	assertNull(a[0]);
294	+	for (int i = 1; i < a.length; i++)
295	+	assertEquals(42, (int) a[i]);
296	+
297	+	Integer[] elements = new Integer[SIZE];
298	+	for (int i = 0; i < SIZE; i++)
299	+	elements[i] = i;
300	+	Collections.shuffle(Arrays.asList(elements));
301	+	Collection<Integer> full = populatedSet(elements);
302	+
303	+	Arrays.fill(a, 42);
304	+	assertTrue(Arrays.equals(elements, full.toArray(a)));
305	+	for (int i = 0; i < a.length; i++)
306	+	assertEquals(42, (int) a[i]);
307	+	assertSame(Integer[].class, full.toArray(a).getClass());
308	+
309	+	a = new Integer[SIZE];
310	+	Arrays.fill(a, 42);
311	+	assertSame(a, full.toArray(a));
312	+	assertTrue(Arrays.equals(elements, a));
313	+
314	+	a = new Integer[2*SIZE];
315	+	Arrays.fill(a, 42);
316	+	assertSame(a, full.toArray(a));
317	+	assertTrue(Arrays.equals(elements, Arrays.copyOf(a, SIZE)));
318	+	assertNull(a[SIZE]);
319	+	for (int i = SIZE + 1; i < a.length; i++)
320	+	assertEquals(42, (int) a[i]);
321	+	}
322
323		/**
324	<	*  toArray throws an ArrayStoreException when the given array can
325	<	*  not store the objects inside the set
324	>	* toArray throws an ArrayStoreException when the given array can
325	>	* not store the objects inside the set
326		*/
327		public void testToArray_ArrayStoreException() {
328		try {
#	Line 264 | Line 331 | public class CopyOnWriteArraySetTest ext
331		c.add("asdadasd");
332		c.toArray(new Long[5]);
333		shouldThrow();
334	<	} catch (ArrayStoreException e) {}
334	>	} catch (ArrayStoreException success) {}
335		}
336
337		/**
338		* A deserialized serialized set is equal
339		*/
340		public void testSerialization() throws Exception {
341	<	CopyOnWriteArraySet q = populatedSet(SIZE);
341	>	Set x = populatedSet(SIZE);
342	>	Set y = serialClone(x);
343
344	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
345	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
346	<	out.writeObject(q);
347	<	out.close();
348	<
349	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
350	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
351	<	CopyOnWriteArraySet r = (CopyOnWriteArraySet)in.readObject();
352	<	assertEquals(q.size(), r.size());
353	<	assertTrue(q.equals(r));
354	<	assertTrue(r.equals(q));
344	>	assertNotSame(y, x);
345	>	assertEquals(x.size(), y.size());
346	>	assertEquals(x.toString(), y.toString());
347	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
348	>	assertEquals(x, y);
349	>	assertEquals(y, x);
350	>	}
351	>
352	>	/**
353	>	* addAll is idempotent
354	>	*/
355	>	public void testAddAll_idempotent() throws Exception {
356	>	Set x = populatedSet(SIZE);
357	>	Set y = new CopyOnWriteArraySet(x);
358	>	y.addAll(x);
359	>	assertEquals(x, y);
360	>	assertEquals(y, x);
361		}
362
363		}

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