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

Comparing jsr166/src/test/tck/CopyOnWriteArrayListTest.java (file contents):
Revision 1.31 by jsr166, Wed Dec 31 19:05:42 2014 UTC vs.
Revision 1.48 by jsr166, Tue Apr 3 00:58:28 2018 UTC

#	Line 11 | Line 11 | import java.util.Arrays;
11		import java.util.Collection;
12		import java.util.Collections;
13		import java.util.Iterator;
14	–	import java.util.LinkedList;
14		import java.util.List;
15		import java.util.ListIterator;
16		import java.util.NoSuchElementException;
18	–	import java.util.Vector;
17		import java.util.concurrent.CopyOnWriteArrayList;
18	+	import java.util.concurrent.ThreadLocalRandom;
19
20		import junit.framework.Test;
22	–	import junit.framework.TestSuite;
21
22		public class CopyOnWriteArrayListTest extends JSR166TestCase {
23
24		public static void main(String[] args) {
25	<	junit.textui.TestRunner.run(suite());
25	>	main(suite(), args);
26		}
27
28		public static Test suite() {
29	<	return new TestSuite(CopyOnWriteArrayListTest.class);
29	>	class Implementation implements CollectionImplementation {
30	>	public Class<?> klazz() { return CopyOnWriteArrayList.class; }
31	>	public List emptyCollection() { return new CopyOnWriteArrayList(); }
32	>	public Object makeElement(int i) { return i; }
33	>	public boolean isConcurrent() { return true; }
34	>	public boolean permitsNulls() { return true; }
35	>	}
36	>	class SubListImplementation extends Implementation {
37	>	public List emptyCollection() {
38	>	return super.emptyCollection().subList(0, 0);
39	>	}
40	>	}
41	>	return newTestSuite(
42	>	CopyOnWriteArrayListTest.class,
43	>	CollectionTest.testSuite(new Implementation()),
44	>	CollectionTest.testSuite(new SubListImplementation()));
45		}
46
47	<	static CopyOnWriteArrayList<Integer> populatedArray(int n) {
48	<	CopyOnWriteArrayList<Integer> a = new CopyOnWriteArrayList<Integer>();
49	<	assertTrue(a.isEmpty());
47	>	static CopyOnWriteArrayList<Integer> populatedList(int n) {
48	>	CopyOnWriteArrayList<Integer> list = new CopyOnWriteArrayList<>();
49	>	assertTrue(list.isEmpty());
50		for (int i = 0; i < n; i++)
51	<	a.add(i);
52	<	assertFalse(a.isEmpty());
53	<	assertEquals(n, a.size());
54	<	return a;
51	>	list.add(i);
52	>	assertEquals(n <= 0, list.isEmpty());
53	>	assertEquals(n, list.size());
54	>	return list;
55		}
56
57	<	static CopyOnWriteArrayList<Integer> populatedArray(Integer[] elements) {
58	<	CopyOnWriteArrayList<Integer> a = new CopyOnWriteArrayList<Integer>();
59	<	assertTrue(a.isEmpty());
60	<	for (int i = 0; i < elements.length; i++)
61	<	a.add(elements[i]);
62	<	assertFalse(a.isEmpty());
63	<	assertEquals(elements.length, a.size());
64	<	return a;
57	>	static CopyOnWriteArrayList<Integer> populatedList(Integer[] elements) {
58	>	CopyOnWriteArrayList<Integer> list = new CopyOnWriteArrayList<>();
59	>	assertTrue(list.isEmpty());
60	>	for (Integer element : elements)
61	>	list.add(element);
62	>	assertFalse(list.isEmpty());
63	>	assertEquals(elements.length, list.size());
64	>	return list;
65		}
66
67		/**
68		* a new list is empty
69		*/
70		public void testConstructor() {
71	<	CopyOnWriteArrayList a = new CopyOnWriteArrayList();
72	<	assertTrue(a.isEmpty());
71	>	List list = new CopyOnWriteArrayList();
72	>	assertTrue(list.isEmpty());
73		}
74
75		/**
76		* new list contains all elements of initializing array
77		*/
78		public void testConstructor2() {
79	<	Integer[] ints = new Integer[SIZE];
80	<	for (int i = 0; i < SIZE-1; ++i)
81	<	ints[i] = new Integer(i);
82	<	CopyOnWriteArrayList a = new CopyOnWriteArrayList(ints);
79	>	Integer[] elts = new Integer[SIZE];
80	>	for (int i = 0; i < SIZE - 1; ++i)
81	>	elts[i] = i;
82	>	List list = new CopyOnWriteArrayList(elts);
83		for (int i = 0; i < SIZE; ++i)
84	<	assertEquals(ints[i], a.get(i));
84	>	assertEquals(elts[i], list.get(i));
85		}
86
87		/**
88		* new list contains all elements of initializing collection
89		*/
90		public void testConstructor3() {
91	<	Integer[] ints = new Integer[SIZE];
92	<	for (int i = 0; i < SIZE-1; ++i)
93	<	ints[i] = new Integer(i);
94	<	CopyOnWriteArrayList a = new CopyOnWriteArrayList(Arrays.asList(ints));
91	>	Integer[] elts = new Integer[SIZE];
92	>	for (int i = 0; i < SIZE - 1; ++i)
93	>	elts[i] = i;
94	>	List list = new CopyOnWriteArrayList(Arrays.asList(elts));
95		for (int i = 0; i < SIZE; ++i)
96	<	assertEquals(ints[i], a.get(i));
96	>	assertEquals(elts[i], list.get(i));
97		}
98
99		/**
100	<	* addAll adds each element from the given collection
100	>	* addAll adds each element from the given collection, including duplicates
101		*/
102		public void testAddAll() {
103	<	CopyOnWriteArrayList full = populatedArray(3);
104	<	Vector v = new Vector();
105	<	v.add(three);
106	<	v.add(four);
107	<	v.add(five);
95	<	full.addAll(v);
96	<	assertEquals(6, full.size());
103	>	List list = populatedList(3);
104	>	assertTrue(list.addAll(Arrays.asList(three, four, five)));
105	>	assertEquals(6, list.size());
106	>	assertTrue(list.addAll(Arrays.asList(three, four, five)));
107	>	assertEquals(9, list.size());
108		}
109
110		/**
#	Line 101 | Line 112 | public class CopyOnWriteArrayListTest ex
112		* already exist in the List
113		*/
114		public void testAddAllAbsent() {
115	<	CopyOnWriteArrayList full = populatedArray(3);
116	<	Vector v = new Vector();
117	<	v.add(three);
118	<	v.add(four);
119	<	v.add(one); // will not add this element
120	<	full.addAllAbsent(v);
110	<	assertEquals(5, full.size());
115	>	CopyOnWriteArrayList list = populatedList(3);
116	>	// "one" is duplicate and will not be added
117	>	assertEquals(2, list.addAllAbsent(Arrays.asList(three, four, one)));
118	>	assertEquals(5, list.size());
119	>	assertEquals(0, list.addAllAbsent(Arrays.asList(three, four, one)));
120	>	assertEquals(5, list.size());
121		}
122
123		/**
124		* addIfAbsent will not add the element if it already exists in the list
125		*/
126		public void testAddIfAbsent() {
127	<	CopyOnWriteArrayList full = populatedArray(SIZE);
128	<	full.addIfAbsent(one);
129	<	assertEquals(SIZE, full.size());
127	>	CopyOnWriteArrayList list = populatedList(SIZE);
128	>	list.addIfAbsent(one);
129	>	assertEquals(SIZE, list.size());
130		}
131
132		/**
133		* addIfAbsent adds the element when it does not exist in the list
134		*/
135		public void testAddIfAbsent2() {
136	<	CopyOnWriteArrayList full = populatedArray(SIZE);
137	<	full.addIfAbsent(three);
138	<	assertTrue(full.contains(three));
136	>	CopyOnWriteArrayList list = populatedList(SIZE);
137	>	list.addIfAbsent(three);
138	>	assertTrue(list.contains(three));
139		}
140
141		/**
142		* clear removes all elements from the list
143		*/
144		public void testClear() {
145	<	CopyOnWriteArrayList full = populatedArray(SIZE);
146	<	full.clear();
147	<	assertEquals(0, full.size());
145	>	List list = populatedList(SIZE);
146	>	list.clear();
147	>	assertEquals(0, list.size());
148		}
149
150		/**
151		* Cloned list is equal
152		*/
153		public void testClone() {
154	<	CopyOnWriteArrayList l1 = populatedArray(SIZE);
154	>	CopyOnWriteArrayList l1 = populatedList(SIZE);
155		CopyOnWriteArrayList l2 = (CopyOnWriteArrayList)(l1.clone());
156		assertEquals(l1, l2);
157		l1.clear();
#	Line 152 | Line 162 | public class CopyOnWriteArrayListTest ex
162		* contains is true for added elements
163		*/
164		public void testContains() {
165	<	CopyOnWriteArrayList full = populatedArray(3);
166	<	assertTrue(full.contains(one));
167	<	assertFalse(full.contains(five));
165	>	List list = populatedList(3);
166	>	assertTrue(list.contains(one));
167	>	assertFalse(list.contains(five));
168		}
169
170		/**
171		* adding at an index places it in the indicated index
172		*/
173		public void testAddIndex() {
174	<	CopyOnWriteArrayList full = populatedArray(3);
175	<	full.add(0, m1);
176	<	assertEquals(4, full.size());
177	<	assertEquals(m1, full.get(0));
178	<	assertEquals(zero, full.get(1));
179	<
180	<	full.add(2, m2);
181	<	assertEquals(5, full.size());
182	<	assertEquals(m2, full.get(2));
183	<	assertEquals(two, full.get(4));
174	>	List list = populatedList(3);
175	>	list.add(0, m1);
176	>	assertEquals(4, list.size());
177	>	assertEquals(m1, list.get(0));
178	>	assertEquals(zero, list.get(1));
179	>
180	>	list.add(2, m2);
181	>	assertEquals(5, list.size());
182	>	assertEquals(m2, list.get(2));
183	>	assertEquals(two, list.get(4));
184		}
185
186		/**
187		* lists with same elements are equal and have same hashCode
188		*/
189		public void testEquals() {
190	<	CopyOnWriteArrayList a = populatedArray(3);
191	<	CopyOnWriteArrayList b = populatedArray(3);
190	>	List a = populatedList(3);
191	>	List b = populatedList(3);
192		assertTrue(a.equals(b));
193		assertTrue(b.equals(a));
194	+	assertTrue(a.containsAll(b));
195	+	assertTrue(b.containsAll(a));
196		assertEquals(a.hashCode(), b.hashCode());
197		a.add(m1);
198		assertFalse(a.equals(b));
199		assertFalse(b.equals(a));
200	+	assertTrue(a.containsAll(b));
201	+	assertFalse(b.containsAll(a));
202		b.add(m1);
203		assertTrue(a.equals(b));
204		assertTrue(b.equals(a));
205	+	assertTrue(a.containsAll(b));
206	+	assertTrue(b.containsAll(a));
207		assertEquals(a.hashCode(), b.hashCode());
208	+
209	+	assertFalse(a.equals(null));
210		}
211
212		/**
213	<	* containsAll returns true for collection with subset of elements
213	>	* containsAll returns true for collections with subset of elements
214		*/
215		public void testContainsAll() {
216	<	CopyOnWriteArrayList full = populatedArray(3);
217	<	Vector v = new Vector();
218	<	v.add(one);
219	<	v.add(two);
220	<	assertTrue(full.containsAll(v));
221	<	v.add(six);
222	<	assertFalse(full.containsAll(v));
216	>	List list = populatedList(3);
217	>	assertTrue(list.containsAll(Arrays.asList()));
218	>	assertTrue(list.containsAll(Arrays.asList(one)));
219	>	assertTrue(list.containsAll(Arrays.asList(one, two)));
220	>	assertFalse(list.containsAll(Arrays.asList(one, two, six)));
221	>	assertFalse(list.containsAll(Arrays.asList(six)));
222	>
223	>	try {
224	>	list.containsAll(null);
225	>	shouldThrow();
226	>	} catch (NullPointerException success) {}
227		}
228
229		/**
230		* get returns the value at the given index
231		*/
232		public void testGet() {
233	<	CopyOnWriteArrayList full = populatedArray(3);
234	<	assertEquals(0, full.get(0));
233	>	List list = populatedList(3);
234	>	assertEquals(0, list.get(0));
235		}
236
237		/**
238	<	* indexOf gives the index for the given object
238	>	* indexOf(Object) returns the index of the first occurrence of the
239	>	* specified element in this list, or -1 if this list does not
240	>	* contain the element
241		*/
242		public void testIndexOf() {
243	<	CopyOnWriteArrayList full = populatedArray(3);
244	<	assertEquals(1, full.indexOf(one));
245	<	assertEquals(-1, full.indexOf("puppies"));
243	>	List list = populatedList(3);
244	>	assertEquals(-1, list.indexOf(-42));
245	>	int size = list.size();
246	>	for (int i = 0; i < size; i++) {
247	>	assertEquals(i, list.indexOf(i));
248	>	assertEquals(i, list.subList(0, size).indexOf(i));
249	>	assertEquals(i, list.subList(0, i + 1).indexOf(i));
250	>	assertEquals(-1, list.subList(0, i).indexOf(i));
251	>	assertEquals(0, list.subList(i, size).indexOf(i));
252	>	assertEquals(-1, list.subList(i + 1, size).indexOf(i));
253	>	}
254	>
255	>	list.add(1);
256	>	assertEquals(1, list.indexOf(1));
257	>	assertEquals(1, list.subList(0, size + 1).indexOf(1));
258	>	assertEquals(0, list.subList(1, size + 1).indexOf(1));
259	>	assertEquals(size - 2, list.subList(2, size + 1).indexOf(1));
260	>	assertEquals(0, list.subList(size, size + 1).indexOf(1));
261	>	assertEquals(-1, list.subList(size + 1, size + 1).indexOf(1));
262		}
263
264		/**
265	<	* indexOf gives the index based on the given index
266	<	* at which to start searching
265	>	* indexOf(E, int) returns the index of the first occurrence of the
266	>	* specified element in this list, searching forwards from index,
267	>	* or returns -1 if the element is not found
268		*/
269		public void testIndexOf2() {
270	<	CopyOnWriteArrayList full = populatedArray(3);
271	<	assertEquals(1, full.indexOf(one, 0));
272	<	assertEquals(-1, full.indexOf(one, 2));
270	>	CopyOnWriteArrayList list = populatedList(3);
271	>	int size = list.size();
272	>	assertEquals(-1, list.indexOf(-42, 0));
273	>
274	>	// we might expect IOOBE, but spec says otherwise
275	>	assertEquals(-1, list.indexOf(0, size));
276	>	assertEquals(-1, list.indexOf(0, Integer.MAX_VALUE));
277	>
278	>	assertThrows(
279	>	IndexOutOfBoundsException.class,
280	>	() -> list.indexOf(0, -1),
281	>	() -> list.indexOf(0, Integer.MIN_VALUE));
282	>
283	>	for (int i = 0; i < size; i++) {
284	>	assertEquals(i, list.indexOf(i, 0));
285	>	assertEquals(i, list.indexOf(i, i));
286	>	assertEquals(-1, list.indexOf(i, i + 1));
287	>	}
288	>
289	>	list.add(1);
290	>	assertEquals(1, list.indexOf(1, 0));
291	>	assertEquals(1, list.indexOf(1, 1));
292	>	assertEquals(size, list.indexOf(1, 2));
293	>	assertEquals(size, list.indexOf(1, size));
294		}
295
296		/**
297		* isEmpty returns true when empty, else false
298		*/
299		public void testIsEmpty() {
300	<	CopyOnWriteArrayList empty = new CopyOnWriteArrayList();
239	<	CopyOnWriteArrayList full = populatedArray(SIZE);
300	>	List empty = new CopyOnWriteArrayList();
301		assertTrue(empty.isEmpty());
302	+	assertTrue(empty.subList(0, 0).isEmpty());
303	+
304	+	List full = populatedList(SIZE);
305		assertFalse(full.isEmpty());
306	+	assertTrue(full.subList(0, 0).isEmpty());
307	+	assertTrue(full.subList(SIZE, SIZE).isEmpty());
308		}
309
310		/**
#	Line 256 | Line 322 | public class CopyOnWriteArrayListTest ex
322		Integer[] elements = new Integer[SIZE];
323		for (int i = 0; i < SIZE; i++)
324		elements[i] = i;
325	<	Collections.shuffle(Arrays.asList(elements));
326	<	Collection<Integer> full = populatedArray(elements);
325	>	shuffle(elements);
326	>	Collection<Integer> full = populatedList(elements);
327
328		Iterator it = full.iterator();
329		for (int j = 0; j < SIZE; j++) {
330		assertTrue(it.hasNext());
331		assertEquals(elements[j], it.next());
332		}
333	<	assertFalse(it.hasNext());
334	<	try {
335	<	it.next();
336	<	shouldThrow();
337	<	} catch (NoSuchElementException success) {}
333	>	assertIteratorExhausted(it);
334	>	}
335	>
336	>	/**
337	>	* iterator of empty collection has no elements
338	>	*/
339	>	public void testEmptyIterator() {
340	>	Collection c = new CopyOnWriteArrayList();
341	>	assertIteratorExhausted(c.iterator());
342		}
343
344		/**
345		* iterator.remove throws UnsupportedOperationException
346		*/
347		public void testIteratorRemove() {
348	<	CopyOnWriteArrayList full = populatedArray(SIZE);
349	<	Iterator it = full.iterator();
348	>	CopyOnWriteArrayList list = populatedList(SIZE);
349	>	Iterator it = list.iterator();
350		it.next();
351		try {
352		it.remove();
#	Line 289 | Line 359 | public class CopyOnWriteArrayListTest ex
359		*/
360		public void testToString() {
361		assertEquals("[]", new CopyOnWriteArrayList().toString());
362	<	CopyOnWriteArrayList full = populatedArray(3);
363	<	String s = full.toString();
362	>	List list = populatedList(3);
363	>	String s = list.toString();
364		for (int i = 0; i < 3; ++i)
365		assertTrue(s.contains(String.valueOf(i)));
366	<	assertEquals(new ArrayList(full).toString(),
367	<	full.toString());
366	>	assertEquals(new ArrayList(list).toString(),
367	>	list.toString());
368		}
369
370		/**
371	<	* lastIndexOf returns the index for the given object
371	>	* lastIndexOf(Object) returns the index of the last occurrence of
372	>	* the specified element in this list, or -1 if this list does not
373	>	* contain the element
374		*/
375		public void testLastIndexOf1() {
376	<	CopyOnWriteArrayList full = populatedArray(3);
377	<	full.add(one);
378	<	full.add(three);
379	<	assertEquals(3, full.lastIndexOf(one));
380	<	assertEquals(-1, full.lastIndexOf(six));
376	>	List list = populatedList(3);
377	>	assertEquals(-1, list.lastIndexOf(-42));
378	>	int size = list.size();
379	>	for (int i = 0; i < size; i++) {
380	>	assertEquals(i, list.lastIndexOf(i));
381	>	assertEquals(i, list.subList(0, size).lastIndexOf(i));
382	>	assertEquals(i, list.subList(0, i + 1).lastIndexOf(i));
383	>	assertEquals(-1, list.subList(0, i).lastIndexOf(i));
384	>	assertEquals(0, list.subList(i, size).lastIndexOf(i));
385	>	assertEquals(-1, list.subList(i + 1, size).lastIndexOf(i));
386	>	}
387	>
388	>	list.add(1);
389	>	assertEquals(size, list.lastIndexOf(1));
390	>	assertEquals(size, list.subList(0, size + 1).lastIndexOf(1));
391	>	assertEquals(1, list.subList(0, size).lastIndexOf(1));
392	>	assertEquals(0, list.subList(1, 2).lastIndexOf(1));
393	>	assertEquals(-1, list.subList(0, 1).indexOf(1));
394		}
395
396		/**
397	<	* lastIndexOf returns the index from the given starting point
397	>	* lastIndexOf(E, int) returns the index of the last occurrence of the
398	>	* specified element in this list, searching backwards from index, or
399	>	* returns -1 if the element is not found
400		*/
401		public void testLastIndexOf2() {
402	<	CopyOnWriteArrayList full = populatedArray(3);
403	<	full.add(one);
404	<	full.add(three);
405	<	assertEquals(3, full.lastIndexOf(one, 4));
406	<	assertEquals(-1, full.lastIndexOf(three, 3));
402	>	CopyOnWriteArrayList list = populatedList(3);
403	>
404	>	// we might expect IOOBE, but spec says otherwise
405	>	assertEquals(-1, list.lastIndexOf(0, -1));
406	>
407	>	int size = list.size();
408	>	assertThrows(
409	>	IndexOutOfBoundsException.class,
410	>	() -> list.lastIndexOf(0, size),
411	>	() -> list.lastIndexOf(0, Integer.MAX_VALUE));
412	>
413	>	for (int i = 0; i < size; i++) {
414	>	assertEquals(i, list.lastIndexOf(i, i));
415	>	assertEquals(list.indexOf(i), list.lastIndexOf(i, i));
416	>	if (i > 0)
417	>	assertEquals(-1, list.lastIndexOf(i, i - 1));
418	>	}
419	>	list.add(one);
420	>	list.add(three);
421	>	assertEquals(1, list.lastIndexOf(one, 1));
422	>	assertEquals(1, list.lastIndexOf(one, 2));
423	>	assertEquals(3, list.lastIndexOf(one, 3));
424	>	assertEquals(3, list.lastIndexOf(one, 4));
425	>	assertEquals(-1, list.lastIndexOf(three, 3));
426		}
427
428		/**
429		* listIterator traverses all elements
430		*/
431		public void testListIterator1() {
432	<	CopyOnWriteArrayList full = populatedArray(SIZE);
433	<	ListIterator i = full.listIterator();
432	>	List list = populatedList(SIZE);
433	>	ListIterator i = list.listIterator();
434		int j;
435		for (j = 0; i.hasNext(); j++)
436		assertEquals(j, i.next());
#	Line 335 | Line 441 | public class CopyOnWriteArrayListTest ex
441		* listIterator only returns those elements after the given index
442		*/
443		public void testListIterator2() {
444	<	CopyOnWriteArrayList full = populatedArray(3);
445	<	ListIterator i = full.listIterator(1);
444	>	List list = populatedList(3);
445	>	ListIterator i = list.listIterator(1);
446		int j;
447		for (j = 0; i.hasNext(); j++)
448	<	assertEquals(j+1, i.next());
448	>	assertEquals(j + 1, i.next());
449		assertEquals(2, j);
450		}
451
#	Line 349 | Line 455 | public class CopyOnWriteArrayListTest ex
455		public void testRemove_int() {
456		int SIZE = 3;
457		for (int i = 0; i < SIZE; i++) {
458	<	CopyOnWriteArrayList full = populatedArray(SIZE);
459	<	assertEquals(i, full.remove(i));
460	<	assertEquals(SIZE - 1, full.size());
461	<	assertFalse(full.contains(new Integer(i)));
458	>	List list = populatedList(SIZE);
459	>	assertEquals(i, list.remove(i));
460	>	assertEquals(SIZE - 1, list.size());
461	>	assertFalse(list.contains(new Integer(i)));
462		}
463		}
464
#	Line 362 | Line 468 | public class CopyOnWriteArrayListTest ex
468		public void testRemove_Object() {
469		int SIZE = 3;
470		for (int i = 0; i < SIZE; i++) {
471	<	CopyOnWriteArrayList full = populatedArray(SIZE);
472	<	assertFalse(full.remove(new Integer(-42)));
473	<	assertTrue(full.remove(new Integer(i)));
474	<	assertEquals(SIZE - 1, full.size());
475	<	assertFalse(full.contains(new Integer(i)));
471	>	List list = populatedList(SIZE);
472	>	assertFalse(list.remove(new Integer(-42)));
473	>	assertTrue(list.remove(new Integer(i)));
474	>	assertEquals(SIZE - 1, list.size());
475	>	assertFalse(list.contains(new Integer(i)));
476		}
477		CopyOnWriteArrayList x = new CopyOnWriteArrayList(Arrays.asList(4, 5, 6));
478		assertTrue(x.remove(new Integer(6)));
#	Line 382 | Line 488 | public class CopyOnWriteArrayListTest ex
488		* removeAll removes all elements from the given collection
489		*/
490		public void testRemoveAll() {
491	<	CopyOnWriteArrayList full = populatedArray(3);
492	<	Vector v = new Vector();
493	<	v.add(one);
494	<	v.add(two);
495	<	full.removeAll(v);
390	<	assertEquals(1, full.size());
491	>	List list = populatedList(3);
492	>	assertTrue(list.removeAll(Arrays.asList(one, two)));
493	>	assertEquals(1, list.size());
494	>	assertFalse(list.removeAll(Arrays.asList(one, two)));
495	>	assertEquals(1, list.size());
496		}
497
498		/**
499		* set changes the element at the given index
500		*/
501		public void testSet() {
502	<	CopyOnWriteArrayList full = populatedArray(3);
503	<	assertEquals(2, full.set(2, four));
504	<	assertEquals(4, full.get(2));
502	>	List list = populatedList(3);
503	>	assertEquals(2, list.set(2, four));
504	>	assertEquals(4, list.get(2));
505		}
506
507		/**
508		* size returns the number of elements
509		*/
510		public void testSize() {
511	<	CopyOnWriteArrayList empty = new CopyOnWriteArrayList();
407	<	CopyOnWriteArrayList full = populatedArray(SIZE);
408	<	assertEquals(SIZE, full.size());
511	>	List empty = new CopyOnWriteArrayList();
512		assertEquals(0, empty.size());
513	+	assertEquals(0, empty.subList(0, 0).size());
514	+
515	+	List full = populatedList(SIZE);
516	+	assertEquals(SIZE, full.size());
517	+	assertEquals(0, full.subList(0, 0).size());
518	+	assertEquals(0, full.subList(SIZE, SIZE).size());
519		}
520
521		/**
#	Line 421 | Line 530 | public class CopyOnWriteArrayListTest ex
530		Integer[] elements = new Integer[SIZE];
531		for (int i = 0; i < SIZE; i++)
532		elements[i] = i;
533	<	Collections.shuffle(Arrays.asList(elements));
534	<	Collection<Integer> full = populatedArray(elements);
533	>	shuffle(elements);
534	>	Collection<Integer> full = populatedList(elements);
535
536		assertTrue(Arrays.equals(elements, full.toArray()));
537		assertSame(Object[].class, full.toArray().getClass());
#	Line 439 | Line 548 | public class CopyOnWriteArrayListTest ex
548		a = new Integer[0];
549		assertSame(a, empty.toArray(a));
550
551	<	a = new Integer[SIZE/2];
551	>	a = new Integer[SIZE / 2];
552		Arrays.fill(a, 42);
553		assertSame(a, empty.toArray(a));
554		assertNull(a[0]);
#	Line 449 | Line 558 | public class CopyOnWriteArrayListTest ex
558		Integer[] elements = new Integer[SIZE];
559		for (int i = 0; i < SIZE; i++)
560		elements[i] = i;
561	<	Collections.shuffle(Arrays.asList(elements));
562	<	Collection<Integer> full = populatedArray(elements);
561	>	shuffle(elements);
562	>	Collection<Integer> full = populatedList(elements);
563
564		Arrays.fill(a, 42);
565		assertTrue(Arrays.equals(elements, full.toArray(a)));
#	Line 463 | Line 572 | public class CopyOnWriteArrayListTest ex
572		assertSame(a, full.toArray(a));
573		assertTrue(Arrays.equals(elements, a));
574
575	<	a = new Integer[2*SIZE];
575	>	a = new Integer[2 * SIZE];
576		Arrays.fill(a, 42);
577		assertSame(a, full.toArray(a));
578		assertTrue(Arrays.equals(elements, Arrays.copyOf(a, SIZE)));
#	Line 476 | Line 585 | public class CopyOnWriteArrayListTest ex
585		* sublists contains elements at indexes offset from their base
586		*/
587		public void testSubList() {
588	<	CopyOnWriteArrayList a = populatedArray(10);
588	>	List a = populatedList(10);
589		assertTrue(a.subList(1,1).isEmpty());
590		for (int j = 0; j < 9; ++j) {
591		for (int i = j ; i < 10; ++i) {
#	Line 493 | Line 602 | public class CopyOnWriteArrayListTest ex
602		assertEquals(a.get(4), m1);
603		s.clear();
604		assertEquals(7, a.size());
605	+
606	+	assertThrows(
607	+	IndexOutOfBoundsException.class,
608	+	() -> s.get(0),
609	+	() -> s.set(0, 42));
610		}
611
612		// Exception tests
#	Line 502 | Line 616 | public class CopyOnWriteArrayListTest ex
616		* can not store the objects inside the list
617		*/
618		public void testToArray_ArrayStoreException() {
619	<	CopyOnWriteArrayList c = new CopyOnWriteArrayList();
620	<	c.add("zfasdfsdf");
621	<	c.add("asdadasd");
622	<	try {
623	<	c.toArray(new Long[5]);
624	<	shouldThrow();
625	<	} catch (ArrayStoreException success) {}
626	<	}
627	<
628	<	/**
629	<	* get throws an IndexOutOfBoundsException on a negative index
630	<	*/
631	<	public void testGet1_IndexOutOfBoundsException() {
632	<	CopyOnWriteArrayList c = populatedArray(5);
633	<	List[] lists = { c, c.subList(1, c.size() - 1) };
634	<	for (List list : lists) {
635	<	try {
636	<	list.get(-1);
637	<	shouldThrow();
638	<	} catch (IndexOutOfBoundsException success) {}
639	<	}
640	<	}
641	<
642	<	/**
643	<	* get throws an IndexOutOfBoundsException on a too high index
644	<	*/
645	<	public void testGet2_IndexOutOfBoundsException() {
646	<	CopyOnWriteArrayList c = populatedArray(5);
647	<	List[] lists = { c, c.subList(1, c.size() - 1) };
648	<	for (List list : lists) {
649	<	try {
650	<	list.get(list.size());
651	<	shouldThrow();
652	<	} catch (IndexOutOfBoundsException success) {}
653	<	}
654	<	}
655	<
656	<	/**
657	<	* set throws an IndexOutOfBoundsException on a negative index
658	<	*/
659	<	public void testSet1_IndexOutOfBoundsException() {
660	<	CopyOnWriteArrayList c = populatedArray(5);
547	<	List[] lists = { c, c.subList(1, c.size() - 1) };
548	<	for (List list : lists) {
549	<	try {
550	<	list.set(-1, "qwerty");
551	<	shouldThrow();
552	<	} catch (IndexOutOfBoundsException success) {}
553	<	}
554	<	}
555	<
556	<	/**
557	<	* set throws an IndexOutOfBoundsException on a too high index
558	<	*/
559	<	public void testSet2() {
560	<	CopyOnWriteArrayList c = populatedArray(5);
561	<	List[] lists = { c, c.subList(1, c.size() - 1) };
562	<	for (List list : lists) {
563	<	try {
564	<	list.set(list.size(), "qwerty");
565	<	shouldThrow();
566	<	} catch (IndexOutOfBoundsException success) {}
567	<	}
568	<	}
569	<
570	<	/**
571	<	* add throws an IndexOutOfBoundsException on a negative index
572	<	*/
573	<	public void testAdd1_IndexOutOfBoundsException() {
574	<	CopyOnWriteArrayList c = populatedArray(5);
575	<	List[] lists = { c, c.subList(1, c.size() - 1) };
576	<	for (List list : lists) {
577	<	try {
578	<	list.add(-1, "qwerty");
579	<	shouldThrow();
580	<	} catch (IndexOutOfBoundsException success) {}
581	<	}
582	<	}
583	<
584	<	/**
585	<	* add throws an IndexOutOfBoundsException on a too high index
586	<	*/
587	<	public void testAdd2_IndexOutOfBoundsException() {
588	<	CopyOnWriteArrayList c = populatedArray(5);
589	<	List[] lists = { c, c.subList(1, c.size() - 1) };
590	<	for (List list : lists) {
591	<	try {
592	<	list.add(list.size() + 1, "qwerty");
593	<	shouldThrow();
594	<	} catch (IndexOutOfBoundsException success) {}
595	<	}
596	<	}
597	<
598	<	/**
599	<	* remove throws an IndexOutOfBoundsException on a negative index
600	<	*/
601	<	public void testRemove1_IndexOutOfBounds() {
602	<	CopyOnWriteArrayList c = populatedArray(5);
603	<	List[] lists = { c, c.subList(1, c.size() - 1) };
604	<	for (List list : lists) {
605	<	try {
606	<	list.remove(-1);
607	<	shouldThrow();
608	<	} catch (IndexOutOfBoundsException success) {}
609	<	}
610	<	}
611	<
612	<	/**
613	<	* remove throws an IndexOutOfBoundsException on a too high index
614	<	*/
615	<	public void testRemove2_IndexOutOfBounds() {
616	<	CopyOnWriteArrayList c = populatedArray(5);
617	<	List[] lists = { c, c.subList(1, c.size() - 1) };
618	<	for (List list : lists) {
619	<	try {
620	<	list.remove(list.size());
621	<	shouldThrow();
622	<	} catch (IndexOutOfBoundsException success) {}
623	<	}
624	<	}
625	<
626	<	/**
627	<	* addAll throws an IndexOutOfBoundsException on a negative index
628	<	*/
629	<	public void testAddAll1_IndexOutOfBoundsException() {
630	<	CopyOnWriteArrayList c = populatedArray(5);
631	<	List[] lists = { c, c.subList(1, c.size() - 1) };
632	<	for (List list : lists) {
633	<	try {
634	<	list.addAll(-1, new LinkedList());
635	<	shouldThrow();
636	<	} catch (IndexOutOfBoundsException success) {}
637	<	}
638	<	}
639	<
640	<	/**
641	<	* addAll throws an IndexOutOfBoundsException on a too high index
642	<	*/
643	<	public void testAddAll2_IndexOutOfBoundsException() {
644	<	CopyOnWriteArrayList c = populatedArray(5);
645	<	List[] lists = { c, c.subList(1, c.size() - 1) };
646	<	for (List list : lists) {
647	<	try {
648	<	list.addAll(list.size() + 1, new LinkedList());
649	<	shouldThrow();
650	<	} catch (IndexOutOfBoundsException success) {}
651	<	}
652	<	}
653	<
654	<	/**
655	<	* listIterator throws an IndexOutOfBoundsException on a negative index
656	<	*/
657	<	public void testListIterator1_IndexOutOfBoundsException() {
658	<	CopyOnWriteArrayList c = populatedArray(5);
659	<	List[] lists = { c, c.subList(1, c.size() - 1) };
660	<	for (List list : lists) {
661	<	try {
662	<	list.listIterator(-1);
663	<	shouldThrow();
664	<	} catch (IndexOutOfBoundsException success) {}
665	<	}
666	<	}
667	<
668	<	/**
669	<	* listIterator throws an IndexOutOfBoundsException on a too high index
670	<	*/
671	<	public void testListIterator2_IndexOutOfBoundsException() {
672	<	CopyOnWriteArrayList c = populatedArray(5);
673	<	List[] lists = { c, c.subList(1, c.size() - 1) };
674	<	for (List list : lists) {
675	<	try {
676	<	list.listIterator(list.size() + 1);
677	<	shouldThrow();
678	<	} catch (IndexOutOfBoundsException success) {}
679	<	}
619	>	List list = new CopyOnWriteArrayList();
620	>	// Integers are not auto-converted to Longs
621	>	list.add(86);
622	>	list.add(99);
623	>	assertThrows(
624	>	ArrayStoreException.class,
625	>	() -> list.toArray(new Long[0]),
626	>	() -> list.toArray(new Long[5]));
627	>	}
628	>
629	>	void testIndexOutOfBoundsException(List list) {
630	>	int size = list.size();
631	>	assertThrows(
632	>	IndexOutOfBoundsException.class,
633	>	() -> list.get(-1),
634	>	() -> list.get(size),
635	>	() -> list.set(-1, "qwerty"),
636	>	() -> list.set(size, "qwerty"),
637	>	() -> list.add(-1, "qwerty"),
638	>	() -> list.add(size + 1, "qwerty"),
639	>	() -> list.remove(-1),
640	>	() -> list.remove(size),
641	>	() -> list.addAll(-1, Collections.emptyList()),
642	>	() -> list.addAll(size + 1, Collections.emptyList()),
643	>	() -> list.listIterator(-1),
644	>	() -> list.listIterator(size + 1),
645	>	() -> list.subList(-1, size),
646	>	() -> list.subList(0, size + 1));
647	>
648	>	// Conversely, operations that must not throw
649	>	list.addAll(0, Collections.emptyList());
650	>	list.addAll(size, Collections.emptyList());
651	>	list.add(0, "qwerty");
652	>	list.add(list.size(), "qwerty");
653	>	list.get(0);
654	>	list.get(list.size() - 1);
655	>	list.set(0, "azerty");
656	>	list.set(list.size() - 1, "azerty");
657	>	list.listIterator(0);
658	>	list.listIterator(list.size());
659	>	list.subList(0, list.size());
660	>	list.remove(list.size() - 1);
661		}
662
663		/**
664	<	* subList throws an IndexOutOfBoundsException on a negative index
665	<	*/
666	<	public void testSubList1_IndexOutOfBoundsException() {
667	<	CopyOnWriteArrayList c = populatedArray(5);
668	<	List[] lists = { c, c.subList(1, c.size() - 1) };
669	<	for (List list : lists) {
670	<	try {
671	<	list.subList(-1, list.size());
672	<	shouldThrow();
673	<	} catch (IndexOutOfBoundsException success) {}
674	<	}
675	<	}
676	<
677	<	/**
697	<	* subList throws an IndexOutOfBoundsException on a too high index
698	<	*/
699	<	public void testSubList2_IndexOutOfBoundsException() {
700	<	CopyOnWriteArrayList c = populatedArray(5);
701	<	List[] lists = { c, c.subList(1, c.size() - 1) };
702	<	for (List list : lists) {
703	<	try {
704	<	list.subList(0, list.size() + 1);
705	<	shouldThrow();
706	<	} catch (IndexOutOfBoundsException success) {}
707	<	}
708	<	}
709	<
710	<	/**
711	<	* subList throws IndexOutOfBoundsException when the second index
712	<	* is lower then the first
713	<	*/
714	<	public void testSubList3_IndexOutOfBoundsException() {
715	<	CopyOnWriteArrayList c = populatedArray(5);
716	<	List[] lists = { c, c.subList(1, c.size() - 1) };
717	<	for (List list : lists) {
718	<	try {
719	<	list.subList(list.size() - 1, 1);
720	<	shouldThrow();
721	<	} catch (IndexOutOfBoundsException success) {}
722	<	}
664	>	* IndexOutOfBoundsException is thrown when specified
665	>	*/
666	>	public void testIndexOutOfBoundsException() {
667	>	ThreadLocalRandom rnd = ThreadLocalRandom.current();
668	>	List x = populatedList(rnd.nextInt(5));
669	>	testIndexOutOfBoundsException(x);
670	>
671	>	int start = rnd.nextInt(x.size() + 1);
672	>	int end = rnd.nextInt(start, x.size() + 1);
673	>	assertThrows(
674	>	IndexOutOfBoundsException.class,
675	>	() -> x.subList(start, start - 1));
676	>	List subList = x.subList(start, end);
677	>	testIndexOutOfBoundsException(x);
678		}
679
680		/**
681	<	* a deserialized serialized list is equal
681	>	* a deserialized/reserialized list equals original
682		*/
683		public void testSerialization() throws Exception {
684	<	List x = populatedArray(SIZE);
684	>	List x = populatedList(SIZE);
685		List y = serialClone(x);
686
687		assertNotSame(x, y);

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