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

Comparing jsr166/src/test/tck/LinkedListTest.java (file contents):
Revision 1.1 by dl, Sun Aug 31 19:24:55 2003 UTC vs.
Revision 1.16 by jsr166, Sun Nov 22 18:57:17 2009 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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
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
13	<	public class LinkedListTest extends TestCase {
13	<
14	<	private static final int N = 10;
15	<	private static final long SHORT_DELAY_MS = 100;
16	<	private static final long MEDIUM_DELAY_MS = 1000;
17	<	private static final long LONG_DELAY_MS = 10000;
18	<
13	>	public class LinkedListTest extends JSR166TestCase {
14		public static void main(String[] args) {
15	<	junit.textui.TestRunner.run (suite());
15	>	junit.textui.TestRunner.run (suite());
16		}
17
18		public static Test suite() {
19	<	return new TestSuite(LinkedListTest.class);
19	>	return new TestSuite(LinkedListTest.class);
20		}
21
22		/**
23		* Create a queue of given size containing consecutive
24		* Integers 0 ... n.
25		*/
26	<	private LinkedList fullQueue(int n) {
26	>	private LinkedList populatedQueue(int n) {
27		LinkedList q = new LinkedList();
28		assertTrue(q.isEmpty());
29	<	for(int i = 0; i < n; ++i)
30	<	assertTrue(q.offer(new Integer(i)));
29	>	for (int i = 0; i < n; ++i)
30	>	assertTrue(q.offer(new Integer(i)));
31		assertFalse(q.isEmpty());
32	<	assertEquals(n, q.size());
32	>	assertEquals(n, q.size());
33		return q;
34		}
35	<
36	<	public void testConstructor1(){
35	>
36	>	/**
37	>	* new queue is empty
38	>	*/
39	>	public void testConstructor1() {
40		assertEquals(0, new LinkedList().size());
41		}
42
43	+	/**
44	+	* Initializing from null Collection throws NPE
45	+	*/
46		public void testConstructor3() {
47		try {
48		LinkedList q = new LinkedList((Collection)null);
49	<	fail("Cannot make from null collection");
50	<	}
50	<	catch (NullPointerException success) {}
49	>	shouldThrow();
50	>	} catch (NullPointerException success) {}
51		}
52
53	<	public void testConstructor6(){
54	<	try {
55	<	Integer[] ints = new Integer[N];
56	<	for (int i = 0; i < N; ++i)
57	<	ints[i] = new Integer(i);
58	<	LinkedList q = new LinkedList(Arrays.asList(ints));
59	<	for (int i = 0; i < N; ++i)
60	<	assertEquals(ints[i], q.poll());
61	<	}
62	<	finally {}
53	>	/**
54	>	* Queue contains all elements of collection used to initialize
55	>	*/
56	>	public void testConstructor6() {
57	>	Integer[] ints = new Integer[SIZE];
58	>	for (int i = 0; i < SIZE; ++i)
59	>	ints[i] = i;
60	>	LinkedList q = new LinkedList(Arrays.asList(ints));
61	>	for (int i = 0; i < SIZE; ++i)
62	>	assertEquals(ints[i], q.poll());
63		}
64
65	+	/**
66	+	* isEmpty is true before add, false after
67	+	*/
68		public void testEmpty() {
69		LinkedList q = new LinkedList();
70		assertTrue(q.isEmpty());
#	Line 73 | Line 76 | public class LinkedListTest extends Test
76		assertTrue(q.isEmpty());
77		}
78
79	+	/**
80	+	* size changes when elements added and removed
81	+	*/
82		public void testSize() {
83	<	LinkedList q = fullQueue(N);
84	<	for (int i = 0; i < N; ++i) {
85	<	assertEquals(N-i, q.size());
83	>	LinkedList q = populatedQueue(SIZE);
84	>	for (int i = 0; i < SIZE; ++i) {
85	>	assertEquals(SIZE-i, q.size());
86		q.remove();
87		}
88	<	for (int i = 0; i < N; ++i) {
88	>	for (int i = 0; i < SIZE; ++i) {
89		assertEquals(i, q.size());
90		q.add(new Integer(i));
91		}
92		}
93
94	<	public void testOfferNull(){
95	<	try {
96	<	LinkedList q = new LinkedList();
97	<	q.offer(null);
98	<	} catch (NullPointerException ie) {
99	<	fail("should not throw NPE");
94	<	}
94	>	/**
95	>	* offer(null) succeeds
96	>	*/
97	>	public void testOfferNull() {
98	>	LinkedList q = new LinkedList();
99	>	q.offer(null);
100		}
101
102	+	/**
103	+	* Offer succeeds
104	+	*/
105		public void testOffer() {
106		LinkedList q = new LinkedList();
107		assertTrue(q.offer(new Integer(0)));
108		assertTrue(q.offer(new Integer(1)));
109		}
110
111	<	public void testAdd(){
111	>	/**
112	>	* add succeeds
113	>	*/
114	>	public void testAdd() {
115		LinkedList q = new LinkedList();
116	<	for (int i = 0; i < N; ++i) {
116	>	for (int i = 0; i < SIZE; ++i) {
117		assertEquals(i, q.size());
118		assertTrue(q.add(new Integer(i)));
119		}
120		}
121
122	<	public void testAddAll1(){
122	>	/**
123	>	* addAll(null) throws NPE
124	>	*/
125	>	public void testAddAll1() {
126		try {
127		LinkedList q = new LinkedList();
128		q.addAll(null);
129	<	fail("Cannot add null collection");
130	<	}
131	<	catch (NullPointerException success) {}
129	>	shouldThrow();
130	>	} catch (NullPointerException success) {}
131	>	}
132	>
133	>	/**
134	>	* Queue contains all elements, in traversal order, of successful addAll
135	>	*/
136	>	public void testAddAll5() {
137	>	Integer[] empty = new Integer[0];
138	>	Integer[] ints = new Integer[SIZE];
139	>	for (int i = 0; i < SIZE; ++i)
140	>	ints[i] = i;
141	>	LinkedList q = new LinkedList();
142	>	assertFalse(q.addAll(Arrays.asList(empty)));
143	>	assertTrue(q.addAll(Arrays.asList(ints)));
144	>	for (int i = 0; i < SIZE; ++i)
145	>	assertEquals(ints[i], q.poll());
146	>	}
147	>
148	>	/**
149	>	* addAll with too large an index throws IOOBE
150	>	*/
151	>	public void testAddAll2_IndexOutOfBoundsException() {
152	>	LinkedList l = new LinkedList();
153	>	l.add(new Object());
154	>	LinkedList m = new LinkedList();
155	>	m.add(new Object());
156	>	try {
157	>	l.addAll(4,m);
158	>	shouldThrow();
159	>	} catch (IndexOutOfBoundsException success) {}
160		}
161
162	<	public void testAddAll5(){
162	>	/**
163	>	* addAll with negative index throws IOOBE
164	>	*/
165	>	public void testAddAll4_BadIndex() {
166	>	LinkedList l = new LinkedList();
167	>	l.add(new Object());
168	>	LinkedList m = new LinkedList();
169	>	m.add(new Object());
170		try {
171	<	Integer[] empty = new Integer[0];
172	<	Integer[] ints = new Integer[N];
173	<	for (int i = 0; i < N; ++i)
125	<	ints[i] = new Integer(i);
126	<	LinkedList q = new LinkedList();
127	<	assertFalse(q.addAll(Arrays.asList(empty)));
128	<	assertTrue(q.addAll(Arrays.asList(ints)));
129	<	for (int i = 0; i < N; ++i)
130	<	assertEquals(ints[i], q.poll());
131	<	}
132	<	finally {}
171	>	l.addAll(-1,m);
172	>	shouldThrow();
173	>	} catch (IndexOutOfBoundsException success) {}
174		}
175
176	<	public void testPoll(){
177	<	LinkedList q = fullQueue(N);
178	<	for (int i = 0; i < N; ++i) {
179	<	assertEquals(i, ((Integer)q.poll()).intValue());
176	>	/**
177	>	*  poll succeeds unless empty
178	>	*/
179	>	public void testPoll() {
180	>	LinkedList q = populatedQueue(SIZE);
181	>	for (int i = 0; i < SIZE; ++i) {
182	>	assertEquals(i, q.poll());
183		}
184	<	assertNull(q.poll());
184	>	assertNull(q.poll());
185		}
186
187	<	public void testPeek(){
188	<	LinkedList q = fullQueue(N);
189	<	for (int i = 0; i < N; ++i) {
190	<	assertEquals(i, ((Integer)q.peek()).intValue());
191	<	q.poll();
187	>	/**
188	>	*  peek returns next element, or null if empty
189	>	*/
190	>	public void testPeek() {
191	>	LinkedList q = populatedQueue(SIZE);
192	>	for (int i = 0; i < SIZE; ++i) {
193	>	assertEquals(i, q.peek());
194	>	assertEquals(i, q.poll());
195		assertTrue(q.peek() == null ||
196	<	i != ((Integer)q.peek()).intValue());
196	>	!q.peek().equals(i));
197		}
198	<	assertNull(q.peek());
198	>	assertNull(q.peek());
199		}
200
201	<	public void testElement(){
202	<	LinkedList q = fullQueue(N);
203	<	for (int i = 0; i < N; ++i) {
204	<	assertEquals(i, ((Integer)q.element()).intValue());
205	<	q.poll();
201	>	/**
202	>	* element returns next element, or throws NSEE if empty
203	>	*/
204	>	public void testElement() {
205	>	LinkedList q = populatedQueue(SIZE);
206	>	for (int i = 0; i < SIZE; ++i) {
207	>	assertEquals(i, q.element());
208	>	assertEquals(i, q.poll());
209		}
210		try {
211		q.element();
212	<	fail("no such element");
213	<	}
164	<	catch (NoSuchElementException success) {}
212	>	shouldThrow();
213	>	} catch (NoSuchElementException success) {}
214		}
215
216	<	public void testRemove(){
217	<	LinkedList q = fullQueue(N);
218	<	for (int i = 0; i < N; ++i) {
219	<	assertEquals(i, ((Integer)q.remove()).intValue());
216	>	/**
217	>	*  remove removes next element, or throws NSEE if empty
218	>	*/
219	>	public void testRemove() {
220	>	LinkedList q = populatedQueue(SIZE);
221	>	for (int i = 0; i < SIZE; ++i) {
222	>	assertEquals(i, q.remove());
223		}
224		try {
225		q.remove();
226	<	fail("remove should throw");
227	<	} catch (NoSuchElementException success){
176	<	}
226	>	shouldThrow();
227	>	} catch (NoSuchElementException success) {}
228		}
229
230	<	public void testRemoveElement(){
231	<	LinkedList q = fullQueue(N);
232	<	for (int i = 1; i < N; i+=2) {
230	>	/**
231	>	* remove(x) removes x and returns true if present
232	>	*/
233	>	public void testRemoveElement() {
234	>	LinkedList q = populatedQueue(SIZE);
235	>	for (int i = 1; i < SIZE; i+=2) {
236		assertTrue(q.remove(new Integer(i)));
237		}
238	<	for (int i = 0; i < N; i+=2) {
238	>	for (int i = 0; i < SIZE; i+=2) {
239		assertTrue(q.remove(new Integer(i)));
240		assertFalse(q.remove(new Integer(i+1)));
241		}
242	<	assert(q.isEmpty());
242	>	assertTrue(q.isEmpty());
243		}
244	<
245	<	public void testContains(){
246	<	LinkedList q = fullQueue(N);
247	<	for (int i = 0; i < N; ++i) {
244	>
245	>	/**
246	>	* contains(x) reports true when elements added but not yet removed
247	>	*/
248	>	public void testContains() {
249	>	LinkedList q = populatedQueue(SIZE);
250	>	for (int i = 0; i < SIZE; ++i) {
251		assertTrue(q.contains(new Integer(i)));
252		q.poll();
253		assertFalse(q.contains(new Integer(i)));
254		}
255		}
256
257	<	public void testClear(){
258	<	LinkedList q = fullQueue(N);
257	>	/**
258	>	* clear removes all elements
259	>	*/
260	>	public void testClear() {
261	>	LinkedList q = populatedQueue(SIZE);
262		q.clear();
263		assertTrue(q.isEmpty());
264		assertEquals(0, q.size());
265	<	q.add(new Integer(1));
265	>	assertTrue(q.add(new Integer(1)));
266		assertFalse(q.isEmpty());
267		q.clear();
268		assertTrue(q.isEmpty());
269		}
270
271	<	public void testContainsAll(){
272	<	LinkedList q = fullQueue(N);
271	>	/**
272	>	* containsAll(c) is true when c contains a subset of elements
273	>	*/
274	>	public void testContainsAll() {
275	>	LinkedList q = populatedQueue(SIZE);
276		LinkedList p = new LinkedList();
277	<	for (int i = 0; i < N; ++i) {
277	>	for (int i = 0; i < SIZE; ++i) {
278		assertTrue(q.containsAll(p));
279		assertFalse(p.containsAll(q));
280	<	p.add(new Integer(i));
280	>	assertTrue(p.add(new Integer(i)));
281		}
282		assertTrue(p.containsAll(q));
283		}
284
285	<	public void testRetainAll(){
286	<	LinkedList q = fullQueue(N);
287	<	LinkedList p = fullQueue(N);
288	<	for (int i = 0; i < N; ++i) {
285	>	/**
286	>	* retainAll(c) retains only those elements of c and reports true if changed
287	>	*/
288	>	public void testRetainAll() {
289	>	LinkedList q = populatedQueue(SIZE);
290	>	LinkedList p = populatedQueue(SIZE);
291	>	for (int i = 0; i < SIZE; ++i) {
292		boolean changed = q.retainAll(p);
293		if (i == 0)
294		assertFalse(changed);
#	Line 230 | Line 296 | public class LinkedListTest extends Test
296		assertTrue(changed);
297
298		assertTrue(q.containsAll(p));
299	<	assertEquals(N-i, q.size());
299	>	assertEquals(SIZE-i, q.size());
300		p.remove();
301		}
302		}
303
304	<	public void testRemoveAll(){
305	<	for (int i = 1; i < N; ++i) {
306	<	LinkedList q = fullQueue(N);
307	<	LinkedList p = fullQueue(i);
304	>	/**
305	>	* removeAll(c) removes only those elements of c and reports true if changed
306	>	*/
307	>	public void testRemoveAll() {
308	>	for (int i = 1; i < SIZE; ++i) {
309	>	LinkedList q = populatedQueue(SIZE);
310	>	LinkedList p = populatedQueue(i);
311		assertTrue(q.removeAll(p));
312	<	assertEquals(N-i, q.size());
312	>	assertEquals(SIZE-i, q.size());
313		for (int j = 0; j < i; ++j) {
314		Integer I = (Integer)(p.remove());
315		assertFalse(q.contains(I));
#	Line 248 | Line 317 | public class LinkedListTest extends Test
317		}
318		}
319
320	<	public void testToArray(){
321	<	LinkedList q = fullQueue(N);
322	<	Object[] o = q.toArray();
320	>	/**
321	>	*  toArray contains all elements
322	>	*/
323	>	public void testToArray() {
324	>	LinkedList q = populatedQueue(SIZE);
325	>	Object[] o = q.toArray();
326		Arrays.sort(o);
327	<	for(int i = 0; i < o.length; i++)
328	<	assertEquals(o[i], q.poll());
327	>	for (int i = 0; i < o.length; i++)
328	>	assertEquals(o[i], q.poll());
329		}
330
331	<	public void testToArray2(){
332	<	LinkedList q = fullQueue(N);
333	<	Integer[] ints = new Integer[N];
334	<	ints = (Integer[])q.toArray(ints);
331	>	/**
332	>	*  toArray(a) contains all elements
333	>	*/
334	>	public void testToArray2() {
335	>	LinkedList q = populatedQueue(SIZE);
336	>	Integer[] ints = new Integer[SIZE];
337	>	ints = (Integer[])q.toArray(ints);
338		Arrays.sort(ints);
339	<	for(int i = 0; i < ints.length; i++)
339	>	for (int i = 0; i < ints.length; i++)
340		assertEquals(ints[i], q.poll());
341		}
342	<
343	<	public void testIterator(){
344	<	LinkedList q = fullQueue(N);
342	>
343	>	/**
344	>	* toArray(null) throws NPE
345	>	*/
346	>	public void testToArray_BadArg() {
347	>	LinkedList l = new LinkedList();
348	>	l.add(new Object());
349	>	try {
350	>	Object o[] = l.toArray(null);
351	>	shouldThrow();
352	>	} catch (NullPointerException success) {}
353	>	}
354	>
355	>	/**
356	>	* toArray with incompatable aray type throws CCE
357	>	*/
358	>	public void testToArray1_BadArg() {
359	>	LinkedList l = new LinkedList();
360	>	l.add(new Integer(5));
361	>	try {
362	>	Object o[] = l.toArray(new String[10]);
363	>	shouldThrow();
364	>	} catch (ArrayStoreException success) {}
365	>	}
366	>
367	>	/**
368	>	*  iterator iterates through all elements
369	>	*/
370	>	public void testIterator() {
371	>	LinkedList q = populatedQueue(SIZE);
372		int i = 0;
373	<	Iterator it = q.iterator();
374	<	while(it.hasNext()) {
373	>	Iterator it = q.iterator();
374	>	while (it.hasNext()) {
375		assertTrue(q.contains(it.next()));
376		++i;
377		}
378	<	assertEquals(i, N);
378	>	assertEquals(i, SIZE);
379		}
380
381	+	/**
382	+	*  iterator ordering is FIFO
383	+	*/
384		public void testIteratorOrdering() {
280	–
385		final LinkedList q = new LinkedList();
282	–
386		q.add(new Integer(1));
387		q.add(new Integer(2));
388		q.add(new Integer(3));
286	–
389		int k = 0;
390		for (Iterator it = q.iterator(); it.hasNext();) {
391	<	int i = ((Integer)(it.next())).intValue();
290	<	assertEquals("items should come out in order", ++k, i);
391	>	assertEquals(++k, it.next());
392		}
393
394	<	assertEquals("should go through 3 elements", 3, k);
394	>	assertEquals(3, k);
395		}
396
397	+	/**
398	+	* iterator.remove removes current element
399	+	*/
400		public void testIteratorRemove () {
401		final LinkedList q = new LinkedList();
298	–
402		q.add(new Integer(1));
403		q.add(new Integer(2));
404		q.add(new Integer(3));
302	–
405		Iterator it = q.iterator();
406	<	it.next();
406	>	assertEquals(it.next(), 1);
407		it.remove();
306	–
408		it = q.iterator();
409	<	assertEquals(it.next(), new Integer(2));
410	<	assertEquals(it.next(), new Integer(3));
409	>	assertEquals(it.next(), 2);
410	>	assertEquals(it.next(), 3);
411		assertFalse(it.hasNext());
412		}
413
414	+	/**
415	+	*  Descending iterator iterates through all elements
416	+	*/
417	+	public void testDescendingIterator() {
418	+	LinkedList q = populatedQueue(SIZE);
419	+	int i = 0;
420	+	Iterator it = q.descendingIterator();
421	+	while (it.hasNext()) {
422	+	assertTrue(q.contains(it.next()));
423	+	++i;
424	+	}
425	+	assertEquals(i, SIZE);
426	+	assertFalse(it.hasNext());
427	+	try {
428	+	it.next();
429	+	shouldThrow();
430	+	} catch (NoSuchElementException success) {}
431	+	}
432
433	<	public void testToString(){
434	<	LinkedList q = fullQueue(N);
433	>	/**
434	>	*  Descending iterator ordering is reverse FIFO
435	>	*/
436	>	public void testDescendingIteratorOrdering() {
437	>	final LinkedList q = new LinkedList();
438	>	q.add(new Integer(3));
439	>	q.add(new Integer(2));
440	>	q.add(new Integer(1));
441	>	int k = 0;
442	>	for (Iterator it = q.descendingIterator(); it.hasNext();) {
443	>	assertEquals(++k, it.next());
444	>	}
445	>
446	>	assertEquals(3, k);
447	>	}
448	>
449	>	/**
450	>	* descendingIterator.remove removes current element
451	>	*/
452	>	public void testDescendingIteratorRemove () {
453	>	final LinkedList q = new LinkedList();
454	>	q.add(new Integer(3));
455	>	q.add(new Integer(2));
456	>	q.add(new Integer(1));
457	>	Iterator it = q.descendingIterator();
458	>	it.next();
459	>	it.remove();
460	>	it = q.descendingIterator();
461	>	assertEquals(it.next(), 2);
462	>	assertEquals(it.next(), 3);
463	>	assertFalse(it.hasNext());
464	>	}
465	>
466	>
467	>	/**
468	>	* toString contains toStrings of elements
469	>	*/
470	>	public void testToString() {
471	>	LinkedList q = populatedQueue(SIZE);
472		String s = q.toString();
473	<	for (int i = 0; i < N; ++i) {
473	>	for (int i = 0; i < SIZE; ++i) {
474		assertTrue(s.indexOf(String.valueOf(i)) >= 0);
475		}
476	<	}
476	>	}
477
478	<	public void testAddFirst(){
479	<	LinkedList q = fullQueue(3);
480	<	q.addFirst(new Integer(4));
481	<	assertEquals(new Integer(4),q.get(0));
482	<	}
483	<
484	<	public void testAddLast(){
329	<	LinkedList q = fullQueue(3);
330	<	q.addLast(new Integer(3));
331	<	assertEquals(new Integer(3),q.get(3));
332	<	}
333	<
334	<	public void testGetFirst() {
335	<	LinkedList q = fullQueue(3);
336	<	assertEquals(new Integer(0),q.getFirst());
337	<	}
338	<
339	<	public void testGetLast() {
340	<	LinkedList q = fullQueue(3);
341	<	assertEquals(new Integer(2),q.getLast());
342	<	}
343	<
344	<	public void testIndexOf(){
345	<	LinkedList q = fullQueue(3);
346	<	assertEquals(0,q.indexOf(new Integer(0)));
347	<	assertEquals(1,q.indexOf(new Integer(1)));
348	<	assertEquals(2,q.indexOf(new Integer(2)));
349	<	assertEquals(-1, q.indexOf("not there"));
478	>	/**
479	>	* peek returns element inserted with addFirst
480	>	*/
481	>	public void testAddFirst() {
482	>	LinkedList q = populatedQueue(3);
483	>	q.addFirst(four);
484	>	assertEquals(four,q.peek());
485		}
486
487	<	public void testLastIndexOf(){
488	<	LinkedList q = fullQueue(3);
489	<	q.add(new Integer(2));
490	<	assertEquals(3,q.lastIndexOf(new Integer(2)));
491	<	assertEquals(-1, q.lastIndexOf("not there"));
487	>	/**
488	>	* peekFirst returns element inserted with push
489	>	*/
490	>	public void testPush() {
491	>	LinkedList q = populatedQueue(3);
492	>	q.pollLast();
493	>	q.push(four);
494	>	assertEquals(four,q.peekFirst());
495		}
496	<
497	<	public void testSet(){
498	<	LinkedList q = fullQueue(3);
499	<	q.set(0,(new Integer(1)));
500	<	assertFalse(q.contains(new Integer(0)));
501	<	assertEquals(new Integer(1), q.get(0));
502	<	}
503	<
504	<
505	<	public void testGetFirst_NoSuchElementException(){
506	<	try {
507	<	LinkedList l = new LinkedList();
508	<	l.getFirst();
371	<	fail("First Element");
372	<	}
373	<	catch(NoSuchElementException success) {}
374	<	}
375	<
376	<	public void testRemoveFirst() {
377	<	try {
378	<	LinkedList l = new LinkedList();
379	<	l.removeFirst();
380	<	fail("R: First Element");
381	<	}
382	<	catch(NoSuchElementException success) {}
383	<	}
384	<
385	<	public void testRemoveLast() {
386	<	try {
387	<	LinkedList l = new LinkedList();
388	<	l.removeLast();
389	<	fail("R: Last Element");
390	<	}
391	<	catch(NoSuchElementException success) {}
392	<	}
393	<
394	<	public void testGetLast_NoSuchElementException(){
395	<	try {
396	<	LinkedList l = new LinkedList();
397	<	l.getLast();
398	<	fail("Last Element");
399	<	}
400	<	catch(NoSuchElementException success) {}
401	<	}
402	<
403	<
404	<	public void testAddAll_NullPointerException(){
405	<	try {
406	<	LinkedList l = new LinkedList();
407	<	l.addAll((Collection)null);
408	<	fail("Add All Failed");
409	<	}
410	<	catch(NullPointerException success){}
411	<	}
412	<
413	<
414	<	public void testAddAll1_OutOfBounds() {
415	<	try {
416	<	LinkedList l = new LinkedList();
417	<	l.addAll(4,new LinkedList());
418	<	fail("boolean addAll(int, Collection) should throw IndexOutOfBoundsException");
419	<	}
420	<	catch(IndexOutOfBoundsException  success) {}
496	>
497	>	/**
498	>	*  pop removes next element, or throws NSEE if empty
499	>	*/
500	>	public void testPop() {
501	>	LinkedList q = populatedQueue(SIZE);
502	>	for (int i = 0; i < SIZE; ++i) {
503	>	assertEquals(i, q.pop());
504	>	}
505	>	try {
506	>	q.pop();
507	>	shouldThrow();
508	>	} catch (NoSuchElementException success) {}
509		}
510	<
511	<
512	<	public void testAddAll2_IndexOutOfBoundsException() {
513	<	try {
514	<	LinkedList l = new LinkedList();
515	<	l.add(new Object());
516	<	LinkedList m = new LinkedList();
517	<	m.add(new Object());
430	<	l.addAll(4,m);
431	<	fail("Add All Failed " + l.size());
432	<	}catch(IndexOutOfBoundsException  success) {}
510	>
511	>	/**
512	>	* OfferFirst succeeds
513	>	*/
514	>	public void testOfferFirst() {
515	>	LinkedList q = new LinkedList();
516	>	assertTrue(q.offerFirst(new Integer(0)));
517	>	assertTrue(q.offerFirst(new Integer(1)));
518		}
519
520	<	public void testAddAll4_BadIndex() {
521	<	try {
522	<	LinkedList l = new LinkedList();
523	<	l.add(new Object());
524	<	LinkedList m = new LinkedList();
525	<	m.add(new Object());
526	<	l.addAll(-1,m);
442	<	fail("Add All Failed " + l.size());
443	<	}catch(IndexOutOfBoundsException  success){}
444	<	}
445	<
446	<	public void testget1() {
447	<	try {
448	<	LinkedList l = new LinkedList();
449	<	l.add(new Object());
450	<	l.get(-1);
451	<	fail("get Failed - l.get(-1)");
452	<	}catch(IndexOutOfBoundsException  success) {}
453	<	}
454	<
455	<	public void testget2() {
456	<	try {
457	<	LinkedList l = new LinkedList();
458	<	l.add(new Object());
459	<	l.get(5);
460	<	fail("get Failed - l.get(5) l.size(): " + l.size());
461	<	}catch(IndexOutOfBoundsException  success){}
462	<	}
463	<
464	<	public void testset1() {
465	<	try {
466	<	LinkedList l = new LinkedList();
467	<	l.add(new Object());
468	<	l.set(-1,new Object());
469	<	fail("set failed - l.set(-1,...)" + l.size());
470	<	}catch(IndexOutOfBoundsException  success){}
471	<	}
472	<
473	<	public void testset2() {
474	<	try {
475	<	LinkedList l = new LinkedList();
476	<	l.add(new Object());
477	<	l.set(5,new Object());
478	<	fail("set failed = l.set(5,..) l.size():" + l.size());
479	<	}catch(IndexOutOfBoundsException  success){}
480	<	}
481	<
482	<	public void testadd1() {
483	<	try {
484	<	LinkedList l = new LinkedList();
485	<	l.add(new Object());
486	<	l.add(-1,new Object());
487	<	fail("Add Failed - l.add(-1) l.size(): " + l.size());
488	<	}catch(IndexOutOfBoundsException  success){}
489	<	}
490	<
491	<	public void add2(){
492	<	try {
493	<	LinkedList l = new LinkedList();
494	<	l.add(new Object());
495	<	l.add(5,new Object());
496	<	fail("Add Failed  l.add(f,...)");
497	<	}catch(IndexOutOfBoundsException  success) {}
498	<	}
499	<
500	<	public void testremove(){
501	<	try {
502	<	LinkedList l = new LinkedList();
503	<	l.add(new Object());
504	<	l.remove(-1);
505	<	fail("Remove Failed l.remove(-1); l.size():" + l.size());
506	<	}catch(IndexOutOfBoundsException  success){}
507	<	}
508	<
509	<	public void testremove1(){
510	<	try {
511	<	LinkedList l = new LinkedList();
512	<	l.add(new Object());
513	<	l.remove(5);
514	<	fail("Remove Failed l.remove(5); l.size():" + l.size());
515	<	}catch(IndexOutOfBoundsException  success){}
516	<	}
517	<
518	<
519	<	public void testremove2(){
520	<	try{
521	<	LinkedList l = new LinkedList();
522	<	l.remove();
523	<	fail("LinkedList - Object remove() should throw a NoSuchElementException");
524	<	}catch(NoSuchElementException e){}
525	<	}
526	<
527	<	public void testlistIt1() {
528	<	try {
529	<	LinkedList l = new LinkedList();
530	<	l.add(new Object());
531	<	l.listIterator(5);
532	<	fail("l.listIterator(5) l.size():" + l.size());
533	<	}catch(IndexOutOfBoundsException  success){}
534	<	}
535	<
536	<	public void testlistIt2() {
537	<	try {
538	<	LinkedList l = new LinkedList();
539	<	l.add(new Object());
540	<	l.listIterator(-1);
541	<	fail("l.listIterator(-1) l.size():" + l.size());
542	<	}catch(IndexOutOfBoundsException  success){}
543	<	}
544	<
545	<	public void testlistIt3() {
546	<	try {
547	<	LinkedList l = new LinkedList();
548	<	l.add(new Object());
549	<	ListIterator a = l.listIterator(0);
550	<	l.removeFirst();
551	<	a.next();
552	<	fail("l.listIterator(-1) l.size():" + l.size());
553	<	}catch(ConcurrentModificationException success){}
520	>	/**
521	>	* OfferLast succeeds
522	>	*/
523	>	public void testOfferLast() {
524	>	LinkedList q = new LinkedList();
525	>	assertTrue(q.offerLast(new Integer(0)));
526	>	assertTrue(q.offerLast(new Integer(1)));
527		}
528
529	<	public void testToArray_BadArg() {
530	<	try {
531	<	LinkedList l = new LinkedList();
532	<	l.add(new Object());
533	<	Object o[] = l.toArray(null);
534	<	fail("l.toArray(null) did not throw an exception");
535	<	}catch(NullPointerException success){}
529	>	/**
530	>	*  pollLast succeeds unless empty
531	>	*/
532	>	public void testPollLast() {
533	>	LinkedList q = populatedQueue(SIZE);
534	>	for (int i = SIZE-1; i >= 0; --i) {
535	>	assertEquals(i, q.pollLast());
536	>	}
537	>	assertNull(q.pollLast());
538		}
539
540	<	public void testToArray1_BadArg() {
541	<	try {
542	<	LinkedList l = new LinkedList();
543	<	l.add(new Integer(5));
544	<	Object o[] = l.toArray(new String[10] );
545	<	fail("l.toArray(String[] f) did not throw an exception, an Integer was added");
546	<	}catch(ArrayStoreException  success){}
540	>	/**
541	>	*  peekFirst returns next element, or null if empty
542	>	*/
543	>	public void testPeekFirst() {
544	>	LinkedList q = populatedQueue(SIZE);
545	>	for (int i = 0; i < SIZE; ++i) {
546	>	assertEquals(i, q.peekFirst());
547	>	assertEquals(i, q.pollFirst());
548	>	assertTrue(q.peekFirst() == null ||
549	>	!q.peekFirst().equals(i));
550	>	}
551	>	assertNull(q.peekFirst());
552	>	}
553	>
554	>
555	>	/**
556	>	*  peekLast returns next element, or null if empty
557	>	*/
558	>	public void testPeekLast() {
559	>	LinkedList q = populatedQueue(SIZE);
560	>	for (int i = SIZE-1; i >= 0; --i) {
561	>	assertEquals(i, q.peekLast());
562	>	assertEquals(i, q.pollLast());
563	>	assertTrue(q.peekLast() == null ||
564	>	!q.peekLast().equals(i));
565	>	}
566	>	assertNull(q.peekLast());
567	>	}
568	>
569	>	public void testFirstElement() {
570	>	LinkedList q = populatedQueue(SIZE);
571	>	for (int i = 0; i < SIZE; ++i) {
572	>	assertEquals(i, q.getFirst());
573	>	assertEquals(i, q.pollFirst());
574	>	}
575	>	try {
576	>	q.getFirst();
577	>	shouldThrow();
578	>	} catch (NoSuchElementException success) {}
579	>	}
580	>
581	>	/**
582	>	*  getLast returns next element, or throws NSEE if empty
583	>	*/
584	>	public void testLastElement() {
585	>	LinkedList q = populatedQueue(SIZE);
586	>	for (int i = SIZE-1; i >= 0; --i) {
587	>	assertEquals(i, q.getLast());
588	>	assertEquals(i, q.pollLast());
589	>	}
590	>	try {
591	>	q.getLast();
592	>	shouldThrow();
593	>	} catch (NoSuchElementException success) {}
594	>	assertNull(q.peekLast());
595	>	}
596	>
597	>	/**
598	>	* removeFirstOccurrence(x) removes x and returns true if present
599	>	*/
600	>	public void testRemoveFirstOccurrence() {
601	>	LinkedList q = populatedQueue(SIZE);
602	>	for (int i = 1; i < SIZE; i+=2) {
603	>	assertTrue(q.removeFirstOccurrence(new Integer(i)));
604	>	}
605	>	for (int i = 0; i < SIZE; i+=2) {
606	>	assertTrue(q.removeFirstOccurrence(new Integer(i)));
607	>	assertFalse(q.removeFirstOccurrence(new Integer(i+1)));
608	>	}
609	>	assertTrue(q.isEmpty());
610	>	}
611	>
612	>	/**
613	>	* removeLastOccurrence(x) removes x and returns true if present
614	>	*/
615	>	public void testRemoveLastOccurrence() {
616	>	LinkedList q = populatedQueue(SIZE);
617	>	for (int i = 1; i < SIZE; i+=2) {
618	>	assertTrue(q.removeLastOccurrence(new Integer(i)));
619	>	}
620	>	for (int i = 0; i < SIZE; i+=2) {
621	>	assertTrue(q.removeLastOccurrence(new Integer(i)));
622	>	assertFalse(q.removeLastOccurrence(new Integer(i+1)));
623	>	}
624	>	assertTrue(q.isEmpty());
625		}
626
627		}

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