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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 1.27 by jsr166, Fri May 27 19:14:39 2011 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/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
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) {
27	<	LinkedList q = new LinkedList();
26	>	private LinkedList<Integer> populatedQueue(int n) {
27	>	LinkedList<Integer> q = new LinkedList<Integer>();
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){
228	<	}
229	<	}
230	<
231	<	public void testRemoveElement(){
232	<	LinkedList q = fullQueue(N);
233	<	for (int i = 1; i < N; i+=2) {
234	<	assertTrue(q.remove(new Integer(i)));
235	<	}
236	<	for (int i = 0; i < N; i+=2) {
237	<	assertTrue(q.remove(new Integer(i)));
238	<	assertFalse(q.remove(new Integer(i+1)));
239	<	}
240	<	assert(q.isEmpty());
241	<	}
242	<
243	<	public void testContains(){
244	<	LinkedList q = fullQueue(N);
245	<	for (int i = 0; i < N; ++i) {
226	>	shouldThrow();
227	>	} catch (NoSuchElementException success) {}
228	>	}
229	>
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.contains(i));
237	>	assertTrue(q.remove((Integer)i));
238	>	assertFalse(q.contains(i));
239	>	assertTrue(q.contains(i-1));
240	>	}
241	>	for (int i = 0; i < SIZE; i+=2) {
242	>	assertTrue(q.contains(i));
243	>	assertTrue(q.remove((Integer)i));
244	>	assertFalse(q.contains(i));
245	>	assertFalse(q.remove((Integer)(i+1)));
246	>	assertFalse(q.contains(i+1));
247	>	}
248	>	assertTrue(q.isEmpty());
249	>	}
250	>
251	>	/**
252	>	* contains(x) reports true when elements added but not yet removed
253	>	*/
254	>	public void testContains() {
255	>	LinkedList q = populatedQueue(SIZE);
256	>	for (int i = 0; i < SIZE; ++i) {
257		assertTrue(q.contains(new Integer(i)));
258		q.poll();
259		assertFalse(q.contains(new Integer(i)));
260		}
261		}
262
263	<	public void testClear(){
264	<	LinkedList q = fullQueue(N);
263	>	/**
264	>	* clear removes all elements
265	>	*/
266	>	public void testClear() {
267	>	LinkedList q = populatedQueue(SIZE);
268		q.clear();
269		assertTrue(q.isEmpty());
270		assertEquals(0, q.size());
271	<	q.add(new Integer(1));
271	>	assertTrue(q.add(new Integer(1)));
272		assertFalse(q.isEmpty());
273		q.clear();
274		assertTrue(q.isEmpty());
275		}
276
277	<	public void testContainsAll(){
278	<	LinkedList q = fullQueue(N);
277	>	/**
278	>	* containsAll(c) is true when c contains a subset of elements
279	>	*/
280	>	public void testContainsAll() {
281	>	LinkedList q = populatedQueue(SIZE);
282		LinkedList p = new LinkedList();
283	<	for (int i = 0; i < N; ++i) {
283	>	for (int i = 0; i < SIZE; ++i) {
284		assertTrue(q.containsAll(p));
285		assertFalse(p.containsAll(q));
286	<	p.add(new Integer(i));
286	>	assertTrue(p.add(new Integer(i)));
287		}
288		assertTrue(p.containsAll(q));
289		}
290
291	<	public void testRetainAll(){
292	<	LinkedList q = fullQueue(N);
293	<	LinkedList p = fullQueue(N);
294	<	for (int i = 0; i < N; ++i) {
291	>	/**
292	>	* retainAll(c) retains only those elements of c and reports true if changed
293	>	*/
294	>	public void testRetainAll() {
295	>	LinkedList q = populatedQueue(SIZE);
296	>	LinkedList p = populatedQueue(SIZE);
297	>	for (int i = 0; i < SIZE; ++i) {
298		boolean changed = q.retainAll(p);
299		if (i == 0)
300		assertFalse(changed);
#	Line 230 | Line 302 | public class LinkedListTest extends Test
302		assertTrue(changed);
303
304		assertTrue(q.containsAll(p));
305	<	assertEquals(N-i, q.size());
305	>	assertEquals(SIZE-i, q.size());
306		p.remove();
307		}
308		}
309
310	<	public void testRemoveAll(){
311	<	for (int i = 1; i < N; ++i) {
312	<	LinkedList q = fullQueue(N);
313	<	LinkedList p = fullQueue(i);
310	>	/**
311	>	* removeAll(c) removes only those elements of c and reports true if changed
312	>	*/
313	>	public void testRemoveAll() {
314	>	for (int i = 1; i < SIZE; ++i) {
315	>	LinkedList q = populatedQueue(SIZE);
316	>	LinkedList p = populatedQueue(i);
317		assertTrue(q.removeAll(p));
318	<	assertEquals(N-i, q.size());
318	>	assertEquals(SIZE-i, q.size());
319		for (int j = 0; j < i; ++j) {
320		Integer I = (Integer)(p.remove());
321		assertFalse(q.contains(I));
#	Line 248 | Line 323 | public class LinkedListTest extends Test
323		}
324		}
325
326	<	public void testToArray(){
327	<	LinkedList q = fullQueue(N);
328	<	Object[] o = q.toArray();
329	<	Arrays.sort(o);
330	<	for(int i = 0; i < o.length; i++)
331	<	assertEquals(o[i], q.poll());
326	>	/**
327	>	* toArray contains all elements in FIFO order
328	>	*/
329	>	public void testToArray() {
330	>	LinkedList q = populatedQueue(SIZE);
331	>	Object[] o = q.toArray();
332	>	for (int i = 0; i < o.length; i++)
333	>	assertSame(o[i], q.poll());
334		}
335
336	<	public void testToArray2(){
337	<	LinkedList q = fullQueue(N);
338	<	Integer[] ints = new Integer[N];
339	<	ints = (Integer[])q.toArray(ints);
340	<	Arrays.sort(ints);
341	<	for(int i = 0; i < ints.length; i++)
342	<	assertEquals(ints[i], q.poll());
336	>	/**
337	>	* toArray(a) contains all elements in FIFO order
338	>	*/
339	>	public void testToArray2() {
340	>	LinkedList<Integer> q = populatedQueue(SIZE);
341	>	Integer[] ints = new Integer[SIZE];
342	>	Integer[] array = q.toArray(ints);
343	>	assertSame(ints, array);
344	>	for (int i = 0; i < ints.length; i++)
345	>	assertSame(ints[i], q.poll());
346		}
347	<
348	<	public void testIterator(){
349	<	LinkedList q = fullQueue(N);
347	>
348	>	/**
349	>	* toArray(null) throws NullPointerException
350	>	*/
351	>	public void testToArray_NullArg() {
352	>	LinkedList l = new LinkedList();
353	>	l.add(new Object());
354	>	try {
355	>	l.toArray(null);
356	>	shouldThrow();
357	>	} catch (NullPointerException success) {}
358	>	}
359	>
360	>	/**
361	>	* toArray(incompatible array type) throws ArrayStoreException
362	>	*/
363	>	public void testToArray1_BadArg() {
364	>	LinkedList l = new LinkedList();
365	>	l.add(new Integer(5));
366	>	try {
367	>	l.toArray(new String[10]);
368	>	shouldThrow();
369	>	} catch (ArrayStoreException success) {}
370	>	}
371	>
372	>	/**
373	>	* iterator iterates through all elements
374	>	*/
375	>	public void testIterator() {
376	>	LinkedList q = populatedQueue(SIZE);
377		int i = 0;
378	<	Iterator it = q.iterator();
379	<	while(it.hasNext()) {
378	>	Iterator it = q.iterator();
379	>	while (it.hasNext()) {
380		assertTrue(q.contains(it.next()));
381		++i;
382		}
383	<	assertEquals(i, N);
383	>	assertEquals(i, SIZE);
384		}
385
386	+	/**
387	+	* iterator ordering is FIFO
388	+	*/
389		public void testIteratorOrdering() {
280	–
390		final LinkedList q = new LinkedList();
282	–
391		q.add(new Integer(1));
392		q.add(new Integer(2));
393		q.add(new Integer(3));
286	–
394		int k = 0;
395		for (Iterator it = q.iterator(); it.hasNext();) {
396	<	int i = ((Integer)(it.next())).intValue();
290	<	assertEquals("items should come out in order", ++k, i);
396	>	assertEquals(++k, it.next());
397		}
398
399	<	assertEquals("should go through 3 elements", 3, k);
399	>	assertEquals(3, k);
400		}
401
402	<	public void testIteratorRemove () {
402	>	/**
403	>	* iterator.remove removes current element
404	>	*/
405	>	public void testIteratorRemove() {
406		final LinkedList q = new LinkedList();
298	–
407		q.add(new Integer(1));
408		q.add(new Integer(2));
409		q.add(new Integer(3));
302	–
410		Iterator it = q.iterator();
411	<	it.next();
411	>	assertEquals(it.next(), 1);
412		it.remove();
306	–
413		it = q.iterator();
414	<	assertEquals(it.next(), new Integer(2));
415	<	assertEquals(it.next(), new Integer(3));
414	>	assertEquals(it.next(), 2);
415	>	assertEquals(it.next(), 3);
416		assertFalse(it.hasNext());
417		}
418
419	+	/**
420	+	* Descending iterator iterates through all elements
421	+	*/
422	+	public void testDescendingIterator() {
423	+	LinkedList q = populatedQueue(SIZE);
424	+	int i = 0;
425	+	Iterator it = q.descendingIterator();
426	+	while (it.hasNext()) {
427	+	assertTrue(q.contains(it.next()));
428	+	++i;
429	+	}
430	+	assertEquals(i, SIZE);
431	+	assertFalse(it.hasNext());
432	+	try {
433	+	it.next();
434	+	shouldThrow();
435	+	} catch (NoSuchElementException success) {}
436	+	}
437	+
438	+	/**
439	+	* Descending iterator ordering is reverse FIFO
440	+	*/
441	+	public void testDescendingIteratorOrdering() {
442	+	final LinkedList q = new LinkedList();
443	+	q.add(new Integer(3));
444	+	q.add(new Integer(2));
445	+	q.add(new Integer(1));
446	+	int k = 0;
447	+	for (Iterator it = q.descendingIterator(); it.hasNext();) {
448	+	assertEquals(++k, it.next());
449	+	}
450	+
451	+	assertEquals(3, k);
452	+	}
453	+
454	+	/**
455	+	* descendingIterator.remove removes current element
456	+	*/
457	+	public void testDescendingIteratorRemove() {
458	+	final LinkedList q = new LinkedList();
459	+	q.add(three);
460	+	q.add(two);
461	+	q.add(one);
462	+	Iterator it = q.descendingIterator();
463	+	it.next();
464	+	it.remove();
465	+	it = q.descendingIterator();
466	+	assertSame(it.next(), two);
467	+	assertSame(it.next(), three);
468	+	assertFalse(it.hasNext());
469	+	}
470
471	<	public void testToString(){
472	<	LinkedList q = fullQueue(N);
471	>	/**
472	>	* toString contains toStrings of elements
473	>	*/
474	>	public void testToString() {
475	>	LinkedList q = populatedQueue(SIZE);
476		String s = q.toString();
477	<	for (int i = 0; i < N; ++i) {
478	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
477	>	for (int i = 0; i < SIZE; ++i) {
478	>	assertTrue(s.contains(String.valueOf(i)));
479		}
480	<	}
480	>	}
481
482	<	public void testAddFirst(){
483	<	LinkedList q = fullQueue(3);
484	<	q.addFirst(new Integer(4));
485	<	assertEquals(new Integer(4),q.get(0));
486	<	}
487	<
488	<	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"));
482	>	/**
483	>	* peek returns element inserted with addFirst
484	>	*/
485	>	public void testAddFirst() {
486	>	LinkedList q = populatedQueue(3);
487	>	q.addFirst(four);
488	>	assertSame(four, q.peek());
489		}
490
491	<	public void testLastIndexOf(){
492	<	LinkedList q = fullQueue(3);
493	<	q.add(new Integer(2));
494	<	assertEquals(3,q.lastIndexOf(new Integer(2)));
495	<	assertEquals(-1, q.lastIndexOf("not there"));
491	>	/**
492	>	* peekFirst returns element inserted with push
493	>	*/
494	>	public void testPush() {
495	>	LinkedList q = populatedQueue(3);
496	>	q.push(four);
497	>	assertSame(four, q.peekFirst());
498		}
499	<
500	<	public void testSet(){
501	<	LinkedList q = fullQueue(3);
502	<	q.set(0,(new Integer(1)));
503	<	assertFalse(q.contains(new Integer(0)));
504	<	assertEquals(new Integer(1), q.get(0));
505	<	}
506	<
507	<
508	<	public void testGetFirst_NoSuchElementException(){
509	<	try {
510	<	LinkedList l = new LinkedList();
511	<	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) {}
499	>
500	>	/**
501	>	* pop removes next element, or throws NSEE if empty
502	>	*/
503	>	public void testPop() {
504	>	LinkedList q = populatedQueue(SIZE);
505	>	for (int i = 0; i < SIZE; ++i) {
506	>	assertEquals(i, q.pop());
507	>	}
508	>	try {
509	>	q.pop();
510	>	shouldThrow();
511	>	} catch (NoSuchElementException success) {}
512		}
513	<
514	<
515	<	public void testAddAll2_IndexOutOfBoundsException() {
516	<	try {
517	<	LinkedList l = new LinkedList();
518	<	l.add(new Object());
519	<	LinkedList m = new LinkedList();
520	<	m.add(new Object());
430	<	l.addAll(4,m);
431	<	fail("Add All Failed " + l.size());
432	<	}catch(IndexOutOfBoundsException  success) {}
513	>
514	>	/**
515	>	* OfferFirst succeeds
516	>	*/
517	>	public void testOfferFirst() {
518	>	LinkedList q = new LinkedList();
519	>	assertTrue(q.offerFirst(new Integer(0)));
520	>	assertTrue(q.offerFirst(new Integer(1)));
521		}
522
523	<	public void testAddAll4_BadIndex() {
524	<	try {
525	<	LinkedList l = new LinkedList();
526	<	l.add(new Object());
527	<	LinkedList m = new LinkedList();
528	<	m.add(new Object());
529	<	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){}
554	<	}
555	<
556	<	public void testToArray_BadArg() {
557	<	try {
558	<	LinkedList l = new LinkedList();
559	<	l.add(new Object());
560	<	Object o[] = l.toArray(null);
561	<	fail("l.toArray(null) did not throw an exception");
562	<	}catch(NullPointerException success){}
523	>	/**
524	>	* OfferLast succeeds
525	>	*/
526	>	public void testOfferLast() {
527	>	LinkedList q = new LinkedList();
528	>	assertTrue(q.offerLast(new Integer(0)));
529	>	assertTrue(q.offerLast(new Integer(1)));
530		}
531
532	<	public void testToArray1_BadArg() {
533	<	try {
534	<	LinkedList l = new LinkedList();
535	<	l.add(new Integer(5));
536	<	Object o[] = l.toArray(new String[10] );
537	<	fail("l.toArray(String[] f) did not throw an exception, an Integer was added");
538	<	}catch(ArrayStoreException  success){}
532	>	/**
533	>	* pollLast succeeds unless empty
534	>	*/
535	>	public void testPollLast() {
536	>	LinkedList q = populatedQueue(SIZE);
537	>	for (int i = SIZE-1; i >= 0; --i) {
538	>	assertEquals(i, q.pollLast());
539	>	}
540	>	assertNull(q.pollLast());
541	>	}
542	>
543	>	/**
544	>	* peekFirst returns next element, or null if empty
545	>	*/
546	>	public void testPeekFirst() {
547	>	LinkedList q = populatedQueue(SIZE);
548	>	for (int i = 0; i < SIZE; ++i) {
549	>	assertEquals(i, q.peekFirst());
550	>	assertEquals(i, q.pollFirst());
551	>	assertTrue(q.peekFirst() == null ||
552	>	!q.peekFirst().equals(i));
553	>	}
554	>	assertNull(q.peekFirst());
555	>	}
556	>
557	>	/**
558	>	* peekLast returns next element, or null if empty
559	>	*/
560	>	public void testPeekLast() {
561	>	LinkedList q = populatedQueue(SIZE);
562	>	for (int i = SIZE-1; i >= 0; --i) {
563	>	assertEquals(i, q.peekLast());
564	>	assertEquals(i, q.pollLast());
565	>	assertTrue(q.peekLast() == null ||
566	>	!q.peekLast().equals(i));
567	>	}
568	>	assertNull(q.peekLast());
569	>	}
570	>
571	>	public void testFirstElement() {
572	>	LinkedList q = populatedQueue(SIZE);
573	>	for (int i = 0; i < SIZE; ++i) {
574	>	assertEquals(i, q.getFirst());
575	>	assertEquals(i, q.pollFirst());
576	>	}
577	>	try {
578	>	q.getFirst();
579	>	shouldThrow();
580	>	} catch (NoSuchElementException success) {}
581	>	}
582	>
583	>	/**
584	>	* getLast returns next element, or throws NSEE if empty
585	>	*/
586	>	public void testLastElement() {
587	>	LinkedList q = populatedQueue(SIZE);
588	>	for (int i = SIZE-1; i >= 0; --i) {
589	>	assertEquals(i, q.getLast());
590	>	assertEquals(i, q.pollLast());
591	>	}
592	>	try {
593	>	q.getLast();
594	>	shouldThrow();
595	>	} catch (NoSuchElementException success) {}
596	>	assertNull(q.peekLast());
597	>	}
598	>
599	>	/**
600	>	* removeFirstOccurrence(x) removes x and returns true if present
601	>	*/
602	>	public void testRemoveFirstOccurrence() {
603	>	LinkedList q = populatedQueue(SIZE);
604	>	for (int i = 1; i < SIZE; i+=2) {
605	>	assertTrue(q.removeFirstOccurrence(new Integer(i)));
606	>	}
607	>	for (int i = 0; i < SIZE; i+=2) {
608	>	assertTrue(q.removeFirstOccurrence(new Integer(i)));
609	>	assertFalse(q.removeFirstOccurrence(new Integer(i+1)));
610	>	}
611	>	assertTrue(q.isEmpty());
612	>	}
613	>
614	>	/**
615	>	* removeLastOccurrence(x) removes x and returns true if present
616	>	*/
617	>	public void testRemoveLastOccurrence() {
618	>	LinkedList q = populatedQueue(SIZE);
619	>	for (int i = 1; i < SIZE; i+=2) {
620	>	assertTrue(q.removeLastOccurrence(new Integer(i)));
621	>	}
622	>	for (int i = 0; i < SIZE; i+=2) {
623	>	assertTrue(q.removeLastOccurrence(new Integer(i)));
624	>	assertFalse(q.removeLastOccurrence(new Integer(i+1)));
625	>	}
626	>	assertTrue(q.isEmpty());
627		}
628
629		}

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