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

Comparing jsr166/src/test/tck/LinkedListTest.java (file contents):
Revision 1.17 by jsr166, Tue Dec 1 09:56:28 2009 UTC vs.
Revision 1.40 by jsr166, Sun May 24 01:42:14 2015 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.*;
9	>	import java.util.Arrays;
10	>	import java.util.Collection;
11	>	import java.util.Iterator;
12	>	import java.util.LinkedList;
13	>	import java.util.NoSuchElementException;
14	>
15	>	import junit.framework.Test;
16	>	import junit.framework.TestSuite;
17
18		public class LinkedListTest extends JSR166TestCase {
19		public static void main(String[] args) {
20	<	junit.textui.TestRunner.run (suite());
20	>	main(suite(), args);
21		}
22
23		public static Test suite() {
#	Line 20 | Line 25 | public class LinkedListTest extends JSR1
25		}
26
27		/**
28	<	* Create a queue of given size containing consecutive
28	>	* Returns a new queue of given size containing consecutive
29		* Integers 0 ... n.
30		*/
31	<	private LinkedList populatedQueue(int n) {
32	<	LinkedList q = new LinkedList();
31	>	private LinkedList<Integer> populatedQueue(int n) {
32	>	LinkedList<Integer> q = new LinkedList<Integer>();
33		assertTrue(q.isEmpty());
34		for (int i = 0; i < n; ++i)
35		assertTrue(q.offer(new Integer(i)));
#	Line 45 | Line 50 | public class LinkedListTest extends JSR1
50		*/
51		public void testConstructor3() {
52		try {
53	<	LinkedList q = new LinkedList((Collection)null);
53	>	new LinkedList((Collection)null);
54		shouldThrow();
55		} catch (NullPointerException success) {}
56		}
#	Line 82 | Line 87 | public class LinkedListTest extends JSR1
87		public void testSize() {
88		LinkedList q = populatedQueue(SIZE);
89		for (int i = 0; i < SIZE; ++i) {
90	<	assertEquals(SIZE-i, q.size());
90	>	assertEquals(SIZE - i, q.size());
91		q.remove();
92		}
93		for (int i = 0; i < SIZE; ++i) {
#	Line 97 | Line 102 | public class LinkedListTest extends JSR1
102		public void testOfferNull() {
103		LinkedList q = new LinkedList();
104		q.offer(null);
105	+	assertNull(q.get(0));
106	+	assertTrue(q.contains(null));
107		}
108
109		/**
#	Line 123 | Line 130 | public class LinkedListTest extends JSR1
130		* addAll(null) throws NPE
131		*/
132		public void testAddAll1() {
133	+	LinkedList q = new LinkedList();
134		try {
127	–	LinkedList q = new LinkedList();
135		q.addAll(null);
136		shouldThrow();
137		} catch (NullPointerException success) {}
#	Line 174 | Line 181 | public class LinkedListTest extends JSR1
181		}
182
183		/**
184	<	*  poll succeeds unless empty
184	>	* poll succeeds unless empty
185		*/
186		public void testPoll() {
187		LinkedList q = populatedQueue(SIZE);
#	Line 185 | Line 192 | public class LinkedListTest extends JSR1
192		}
193
194		/**
195	<	*  peek returns next element, or null if empty
195	>	* peek returns next element, or null if empty
196		*/
197		public void testPeek() {
198		LinkedList q = populatedQueue(SIZE);
#	Line 214 | Line 221 | public class LinkedListTest extends JSR1
221		}
222
223		/**
224	<	*  remove removes next element, or throws NSEE if empty
224	>	* remove removes next element, or throws NSEE if empty
225		*/
226		public void testRemove() {
227		LinkedList q = populatedQueue(SIZE);
#	Line 232 | Line 239 | public class LinkedListTest extends JSR1
239		*/
240		public void testRemoveElement() {
241		LinkedList q = populatedQueue(SIZE);
242	<	for (int i = 1; i < SIZE; i+=2) {
243	<	assertTrue(q.remove(new Integer(i)));
244	<	}
245	<	for (int i = 0; i < SIZE; i+=2) {
246	<	assertTrue(q.remove(new Integer(i)));
247	<	assertFalse(q.remove(new Integer(i+1)));
242	>	for (int i = 1; i < SIZE; i += 2) {
243	>	assertTrue(q.contains(i));
244	>	assertTrue(q.remove((Integer)i));
245	>	assertFalse(q.contains(i));
246	>	assertTrue(q.contains(i - 1));
247	>	}
248	>	for (int i = 0; i < SIZE; i += 2) {
249	>	assertTrue(q.contains(i));
250	>	assertTrue(q.remove((Integer)i));
251	>	assertFalse(q.contains(i));
252	>	assertFalse(q.remove((Integer)(i + 1)));
253	>	assertFalse(q.contains(i + 1));
254		}
255		assertTrue(q.isEmpty());
256		}
#	Line 296 | Line 309 | public class LinkedListTest extends JSR1
309		assertTrue(changed);
310
311		assertTrue(q.containsAll(p));
312	<	assertEquals(SIZE-i, q.size());
312	>	assertEquals(SIZE - i, q.size());
313		p.remove();
314		}
315		}
#	Line 309 | Line 322 | public class LinkedListTest extends JSR1
322		LinkedList q = populatedQueue(SIZE);
323		LinkedList p = populatedQueue(i);
324		assertTrue(q.removeAll(p));
325	<	assertEquals(SIZE-i, q.size());
325	>	assertEquals(SIZE - i, q.size());
326		for (int j = 0; j < i; ++j) {
327	<	Integer I = (Integer)(p.remove());
328	<	assertFalse(q.contains(I));
327	>	Integer x = (Integer)(p.remove());
328	>	assertFalse(q.contains(x));
329		}
330		}
331		}
332
333		/**
334	<	*  toArray contains all elements
334	>	* toArray contains all elements in FIFO order
335		*/
336		public void testToArray() {
337		LinkedList q = populatedQueue(SIZE);
338		Object[] o = q.toArray();
326	–	Arrays.sort(o);
339		for (int i = 0; i < o.length; i++)
340	<	assertEquals(o[i], q.poll());
340	>	assertSame(o[i], q.poll());
341		}
342
343		/**
344	<	*  toArray(a) contains all elements
344	>	* toArray(a) contains all elements in FIFO order
345		*/
346		public void testToArray2() {
347	<	LinkedList q = populatedQueue(SIZE);
347	>	LinkedList<Integer> q = populatedQueue(SIZE);
348		Integer[] ints = new Integer[SIZE];
349	<	ints = (Integer[])q.toArray(ints);
350	<	Arrays.sort(ints);
349	>	Integer[] array = q.toArray(ints);
350	>	assertSame(ints, array);
351		for (int i = 0; i < ints.length; i++)
352	<	assertEquals(ints[i], q.poll());
352	>	assertSame(ints[i], q.poll());
353		}
354
355		/**
356	<	* toArray(null) throws NPE
356	>	* toArray(null) throws NullPointerException
357		*/
358	<	public void testToArray_BadArg() {
358	>	public void testToArray_NullArg() {
359		LinkedList l = new LinkedList();
360		l.add(new Object());
361		try {
362	<	Object o[] = l.toArray(null);
362	>	l.toArray(null);
363		shouldThrow();
364		} catch (NullPointerException success) {}
365		}
366
367		/**
368	<	* toArray with incompatable aray type throws CCE
368	>	* toArray(incompatible array type) throws ArrayStoreException
369		*/
370		public void testToArray1_BadArg() {
371		LinkedList l = new LinkedList();
372		l.add(new Integer(5));
373		try {
374	<	Object o[] = l.toArray(new String[10]);
374	>	l.toArray(new String[10]);
375		shouldThrow();
376		} catch (ArrayStoreException success) {}
377		}
378
379		/**
380	<	*  iterator iterates through all elements
380	>	* iterator iterates through all elements
381		*/
382		public void testIterator() {
383		LinkedList q = populatedQueue(SIZE);
372	–	int i = 0;
384		Iterator it = q.iterator();
385	<	while (it.hasNext()) {
385	>	int i;
386	>	for (i = 0; it.hasNext(); i++)
387		assertTrue(q.contains(it.next()));
376	–	++i;
377	–	}
388		assertEquals(i, SIZE);
389	+	assertIteratorExhausted(it);
390	+	}
391	+
392	+	/**
393	+	* iterator of empty collection has no elements
394	+	*/
395	+	public void testEmptyIterator() {
396	+	assertIteratorExhausted(new LinkedList().iterator());
397		}
398
399		/**
400	<	*  iterator ordering is FIFO
400	>	* iterator ordering is FIFO
401		*/
402		public void testIteratorOrdering() {
403		final LinkedList q = new LinkedList();
#	Line 397 | Line 415 | public class LinkedListTest extends JSR1
415		/**
416		* iterator.remove removes current element
417		*/
418	<	public void testIteratorRemove () {
418	>	public void testIteratorRemove() {
419		final LinkedList q = new LinkedList();
420		q.add(new Integer(1));
421		q.add(new Integer(2));
422		q.add(new Integer(3));
423		Iterator it = q.iterator();
424	<	assertEquals(it.next(), 1);
424	>	assertEquals(1, it.next());
425		it.remove();
426		it = q.iterator();
427	<	assertEquals(it.next(), 2);
428	<	assertEquals(it.next(), 3);
427	>	assertEquals(2, it.next());
428	>	assertEquals(3, it.next());
429		assertFalse(it.hasNext());
430		}
431
432		/**
433	<	*  Descending iterator iterates through all elements
433	>	* Descending iterator iterates through all elements
434		*/
435		public void testDescendingIterator() {
436		LinkedList q = populatedQueue(SIZE);
#	Line 431 | Line 449 | public class LinkedListTest extends JSR1
449		}
450
451		/**
452	<	*  Descending iterator ordering is reverse FIFO
452	>	* Descending iterator ordering is reverse FIFO
453		*/
454		public void testDescendingIteratorOrdering() {
455		final LinkedList q = new LinkedList();
#	Line 449 | Line 467 | public class LinkedListTest extends JSR1
467		/**
468		* descendingIterator.remove removes current element
469		*/
470	<	public void testDescendingIteratorRemove () {
470	>	public void testDescendingIteratorRemove() {
471		final LinkedList q = new LinkedList();
472		q.add(three);
473		q.add(two);
#	Line 463 | Line 481 | public class LinkedListTest extends JSR1
481		assertFalse(it.hasNext());
482		}
483
466	–
484		/**
485		* toString contains toStrings of elements
486		*/
#	Line 471 | Line 488 | public class LinkedListTest extends JSR1
488		LinkedList q = populatedQueue(SIZE);
489		String s = q.toString();
490		for (int i = 0; i < SIZE; ++i) {
491	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
491	>	assertTrue(s.contains(String.valueOf(i)));
492		}
493		}
494
#	Line 494 | Line 511 | public class LinkedListTest extends JSR1
511		}
512
513		/**
514	<	*  pop removes next element, or throws NSEE if empty
514	>	* pop removes next element, or throws NSEE if empty
515		*/
516		public void testPop() {
517		LinkedList q = populatedQueue(SIZE);
#	Line 526 | Line 543 | public class LinkedListTest extends JSR1
543		}
544
545		/**
546	<	*  pollLast succeeds unless empty
546	>	* pollLast succeeds unless empty
547		*/
548		public void testPollLast() {
549		LinkedList q = populatedQueue(SIZE);
550	<	for (int i = SIZE-1; i >= 0; --i) {
550	>	for (int i = SIZE - 1; i >= 0; --i) {
551		assertEquals(i, q.pollLast());
552		}
553		assertNull(q.pollLast());
554		}
555
556		/**
557	<	*  peekFirst returns next element, or null if empty
557	>	* peekFirst returns next element, or null if empty
558		*/
559		public void testPeekFirst() {
560		LinkedList q = populatedQueue(SIZE);
#	Line 550 | Line 567 | public class LinkedListTest extends JSR1
567		assertNull(q.peekFirst());
568		}
569
553	–
570		/**
571	<	*  peekLast returns next element, or null if empty
571	>	* peekLast returns next element, or null if empty
572		*/
573		public void testPeekLast() {
574		LinkedList q = populatedQueue(SIZE);
575	<	for (int i = SIZE-1; i >= 0; --i) {
575	>	for (int i = SIZE - 1; i >= 0; --i) {
576		assertEquals(i, q.peekLast());
577		assertEquals(i, q.pollLast());
578		assertTrue(q.peekLast() == null ||
#	Line 578 | Line 594 | public class LinkedListTest extends JSR1
594		}
595
596		/**
597	<	*  getLast returns next element, or throws NSEE if empty
597	>	* getLast returns next element, or throws NSEE if empty
598		*/
599		public void testLastElement() {
600		LinkedList q = populatedQueue(SIZE);
601	<	for (int i = SIZE-1; i >= 0; --i) {
601	>	for (int i = SIZE - 1; i >= 0; --i) {
602		assertEquals(i, q.getLast());
603		assertEquals(i, q.pollLast());
604		}
#	Line 598 | Line 614 | public class LinkedListTest extends JSR1
614		*/
615		public void testRemoveFirstOccurrence() {
616		LinkedList q = populatedQueue(SIZE);
617	<	for (int i = 1; i < SIZE; i+=2) {
617	>	for (int i = 1; i < SIZE; i += 2) {
618		assertTrue(q.removeFirstOccurrence(new Integer(i)));
619		}
620	<	for (int i = 0; i < SIZE; i+=2) {
620	>	for (int i = 0; i < SIZE; i += 2) {
621		assertTrue(q.removeFirstOccurrence(new Integer(i)));
622	<	assertFalse(q.removeFirstOccurrence(new Integer(i+1)));
622	>	assertFalse(q.removeFirstOccurrence(new Integer(i + 1)));
623		}
624		assertTrue(q.isEmpty());
625		}
#	Line 613 | Line 629 | public class LinkedListTest extends JSR1
629		*/
630		public void testRemoveLastOccurrence() {
631		LinkedList q = populatedQueue(SIZE);
632	<	for (int i = 1; i < SIZE; i+=2) {
632	>	for (int i = 1; i < SIZE; i += 2) {
633		assertTrue(q.removeLastOccurrence(new Integer(i)));
634		}
635	<	for (int i = 0; i < SIZE; i+=2) {
635	>	for (int i = 0; i < SIZE; i += 2) {
636		assertTrue(q.removeLastOccurrence(new Integer(i)));
637	<	assertFalse(q.removeLastOccurrence(new Integer(i+1)));
637	>	assertFalse(q.removeLastOccurrence(new Integer(i + 1)));
638		}
639		assertTrue(q.isEmpty());
640		}

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