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Comparing jsr166/src/test/tck/TreeSubSetTest.java (file contents):
Revision 1.6 by jsr166, Mon Nov 16 05:30:08 2009 UTC vs.
Revision 1.27 by jsr166, Wed Dec 31 20:09:09 2014 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		*/
6
7	<	import junit.framework.*;
8	<	import java.util.*;
9	<	import java.util.concurrent.*;
10	<	import java.io.*;
7	>	import java.util.Arrays;
8	>	import java.util.Comparator;
9	>	import java.util.Iterator;
10	>	import java.util.NavigableSet;
11	>	import java.util.Set;
12	>	import java.util.SortedSet;
13	>	import java.util.TreeSet;
14	>
15	>	import junit.framework.Test;
16	>	import junit.framework.TestSuite;
17
18		public class TreeSubSetTest extends JSR166TestCase {
19		public static void main(String[] args) {
20	<	junit.textui.TestRunner.run (suite());
20	>	junit.textui.TestRunner.run(suite());
21		}
22		public static Test suite() {
23	<	return new TestSuite(TreeSubSetTest.class);
23	>	return new TestSuite(TreeSubSetTest.class);
24		}
25
26		static class MyReverseComparator implements Comparator {
27		public int compare(Object x, Object y) {
28	<	int i = ((Integer)x).intValue();
23	<	int j = ((Integer)y).intValue();
24	<	if (i < j) return 1;
25	<	if (i > j) return -1;
26	<	return 0;
28	>	return ((Comparable)y).compareTo(x);
29		}
30		}
31
32		/**
33	<	* Create a set of given size containing consecutive
33	>	* Returns a new set of given size containing consecutive
34		* Integers 0 ... n.
35		*/
36	<	private NavigableSet populatedSet(int n) {
37	<	TreeSet q = new TreeSet();
36	>	private NavigableSet<Integer> populatedSet(int n) {
37	>	TreeSet<Integer> q = new TreeSet<Integer>();
38		assertTrue(q.isEmpty());
39
40	<	for (int i = n-1; i >= 0; i-=2)
41	<	assertTrue(q.add(new Integer(i)));
42	<	for (int i = (n & 1); i < n; i+=2)
43	<	assertTrue(q.add(new Integer(i)));
40	>	for (int i = n-1; i >= 0; i -= 2)
41	>	assertTrue(q.add(new Integer(i)));
42	>	for (int i = (n & 1); i < n; i += 2)
43	>	assertTrue(q.add(new Integer(i)));
44		assertTrue(q.add(new Integer(-n)));
45		assertTrue(q.add(new Integer(n)));
46		NavigableSet s = q.subSet(new Integer(0), true, new Integer(n), false);
47		assertFalse(s.isEmpty());
48	<	assertEquals(n, s.size());
48	>	assertEquals(n, s.size());
49		return s;
50		}
51
52		/**
53	<	* Create set of first 5 ints
53	>	* Returns a new set of first 5 ints.
54		*/
55		private NavigableSet set5() {
56		TreeSet q = new TreeSet();
#	Line 61 | Line 63 | public class TreeSubSetTest extends JSR1
63		q.add(zero);
64		q.add(seven);
65		NavigableSet s = q.subSet(one, true, seven, false);
66	<	assertEquals(5, s.size());
66	>	assertEquals(5, s.size());
67		return s;
68		}
69
#	Line 74 | Line 76 | public class TreeSubSetTest extends JSR1
76		q.add(m4);
77		q.add(m5);
78		NavigableSet s = q.descendingSet();
79	<	assertEquals(5, s.size());
79	>	assertEquals(5, s.size());
80		return s;
81		}
82
83		private static NavigableSet set0() {
84	<	TreeSet set = new TreeSet();
84	>	TreeSet set = new TreeSet();
85		assertTrue(set.isEmpty());
86		return set.tailSet(m1, false);
87		}
88
89		private static NavigableSet dset0() {
90	<	TreeSet set = new TreeSet();
90	>	TreeSet set = new TreeSet();
91		assertTrue(set.isEmpty());
92		return set;
93		}
#	Line 97 | Line 99 | public class TreeSubSetTest extends JSR1
99		assertEquals(0, set0().size());
100		}
101
100	–
102		/**
103		* isEmpty is true before add, false after
104		*/
105		public void testEmpty() {
106		NavigableSet q = set0();
107		assertTrue(q.isEmpty());
108	<	q.add(new Integer(1));
108	>	assertTrue(q.add(new Integer(1)));
109		assertFalse(q.isEmpty());
110	<	q.add(new Integer(2));
110	>	assertTrue(q.add(new Integer(2)));
111		q.pollFirst();
112		q.pollFirst();
113		assertTrue(q.isEmpty());
#	Line 131 | Line 132 | public class TreeSubSetTest extends JSR1
132		* add(null) throws NPE
133		*/
134		public void testAddNull() {
135	<	try {
135	>	try {
136		NavigableSet q = set0();
137		q.add(null);
138		shouldThrow();
139	<	} catch (NullPointerException success) { }
139	>	} catch (NullPointerException success) {}
140		}
141
142		/**
#	Line 165 | Line 166 | public class TreeSubSetTest extends JSR1
166		q.add(new Object());
167		q.add(new Object());
168		shouldThrow();
169	<	}
169	<	catch (ClassCastException success) {}
169	>	} catch (ClassCastException success) {}
170		}
171
172	–
172		/**
173		* addAll(null) throws NPE
174		*/
#	Line 178 | Line 177 | public class TreeSubSetTest extends JSR1
177		NavigableSet q = set0();
178		q.addAll(null);
179		shouldThrow();
180	<	}
182	<	catch (NullPointerException success) {}
180	>	} catch (NullPointerException success) {}
181		}
182	+
183		/**
184		* addAll of a collection with null elements throws NPE
185		*/
#	Line 190 | Line 189 | public class TreeSubSetTest extends JSR1
189		Integer[] ints = new Integer[SIZE];
190		q.addAll(Arrays.asList(ints));
191		shouldThrow();
192	<	}
194	<	catch (NullPointerException success) {}
192	>	} catch (NullPointerException success) {}
193		}
194	+
195		/**
196		* addAll of a collection with any null elements throws NPE after
197		* possibly adding some elements
#	Line 205 | Line 204 | public class TreeSubSetTest extends JSR1
204		ints[i] = new Integer(i+SIZE);
205		q.addAll(Arrays.asList(ints));
206		shouldThrow();
207	<	}
209	<	catch (NullPointerException success) {}
207	>	} catch (NullPointerException success) {}
208		}
209
210		/**
211		* Set contains all elements of successful addAll
212		*/
213		public void testAddAll5() {
214	<	try {
215	<	Integer[] empty = new Integer[0];
216	<	Integer[] ints = new Integer[SIZE];
217	<	for (int i = 0; i < SIZE; ++i)
218	<	ints[i] = new Integer(SIZE-1- i);
219	<	NavigableSet q = set0();
220	<	assertFalse(q.addAll(Arrays.asList(empty)));
221	<	assertTrue(q.addAll(Arrays.asList(ints)));
222	<	for (int i = 0; i < SIZE; ++i)
225	<	assertEquals(new Integer(i), q.pollFirst());
226	<	}
227	<	finally {}
214	>	Integer[] empty = new Integer[0];
215	>	Integer[] ints = new Integer[SIZE];
216	>	for (int i = 0; i < SIZE; ++i)
217	>	ints[i] = new Integer(SIZE-1- i);
218	>	NavigableSet q = set0();
219	>	assertFalse(q.addAll(Arrays.asList(empty)));
220	>	assertTrue(q.addAll(Arrays.asList(ints)));
221	>	for (int i = 0; i < SIZE; ++i)
222	>	assertEquals(new Integer(i), q.pollFirst());
223		}
224
225		/**
#	Line 233 | Line 228 | public class TreeSubSetTest extends JSR1
228		public void testPoll() {
229		NavigableSet q = populatedSet(SIZE);
230		for (int i = 0; i < SIZE; ++i) {
231	<	assertEquals(i, ((Integer)q.pollFirst()).intValue());
231	>	assertEquals(i, q.pollFirst());
232		}
233	<	assertNull(q.pollFirst());
233	>	assertNull(q.pollFirst());
234		}
235
236		/**
#	Line 243 | Line 238 | public class TreeSubSetTest extends JSR1
238		*/
239		public void testRemoveElement() {
240		NavigableSet q = populatedSet(SIZE);
241	<	for (int i = 1; i < SIZE; i+=2) {
242	<	assertTrue(q.remove(new Integer(i)));
243	<	}
244	<	for (int i = 0; i < SIZE; i+=2) {
245	<	assertTrue(q.remove(new Integer(i)));
246	<	assertFalse(q.remove(new Integer(i+1)));
241	>	for (int i = 1; i < SIZE; i += 2) {
242	>	assertTrue(q.contains(i));
243	>	assertTrue(q.remove(i));
244	>	assertFalse(q.contains(i));
245	>	assertTrue(q.contains(i-1));
246	>	}
247	>	for (int i = 0; i < SIZE; i += 2) {
248	>	assertTrue(q.contains(i));
249	>	assertTrue(q.remove(i));
250	>	assertFalse(q.contains(i));
251	>	assertFalse(q.remove(i+1));
252	>	assertFalse(q.contains(i+1));
253		}
254		assertTrue(q.isEmpty());
255		}
#	Line 273 | Line 274 | public class TreeSubSetTest extends JSR1
274		q.clear();
275		assertTrue(q.isEmpty());
276		assertEquals(0, q.size());
277	<	q.add(new Integer(1));
277	>	assertTrue(q.add(new Integer(1)));
278		assertFalse(q.isEmpty());
279		q.clear();
280		assertTrue(q.isEmpty());
#	Line 328 | Line 329 | public class TreeSubSetTest extends JSR1
329		}
330		}
331
331	–
332	–
332		/**
333		* lower returns preceding element
334		*/
#	Line 346 | Line 345 | public class TreeSubSetTest extends JSR1
345
346		Object e4 = q.lower(zero);
347		assertNull(e4);
349	–
348		}
349
350		/**
#	Line 365 | Line 363 | public class TreeSubSetTest extends JSR1
363
364		Object e4 = q.higher(six);
365		assertNull(e4);
368	–
366		}
367
368		/**
#	Line 384 | Line 381 | public class TreeSubSetTest extends JSR1
381
382		Object e4 = q.floor(zero);
383		assertNull(e4);
387	–
384		}
385
386		/**
#	Line 403 | Line 399 | public class TreeSubSetTest extends JSR1
399
400		Object e4 = q.ceiling(six);
401		assertNull(e4);
406	–
402		}
403
404		/**
405	<	* toArray contains all elements
405	>	* toArray contains all elements in sorted order
406		*/
407		public void testToArray() {
408		NavigableSet q = populatedSet(SIZE);
409	<	Object[] o = q.toArray();
410	<	Arrays.sort(o);
411	<	for (int i = 0; i < o.length; i++)
417	<	assertEquals(o[i], q.pollFirst());
409	>	Object[] o = q.toArray();
410	>	for (int i = 0; i < o.length; i++)
411	>	assertSame(o[i], q.pollFirst());
412		}
413
414		/**
415	<	* toArray(a) contains all elements
415	>	* toArray(a) contains all elements in sorted order
416		*/
417		public void testToArray2() {
418	<	NavigableSet q = populatedSet(SIZE);
419	<	Integer[] ints = new Integer[SIZE];
420	<	ints = (Integer[])q.toArray(ints);
421	<	Arrays.sort(ints);
418	>	NavigableSet<Integer> q = populatedSet(SIZE);
419	>	Integer[] ints = new Integer[SIZE];
420	>	Integer[] array = q.toArray(ints);
421	>	assertSame(ints, array);
422		for (int i = 0; i < ints.length; i++)
423	<	assertEquals(ints[i], q.pollFirst());
423	>	assertSame(ints[i], q.pollFirst());
424		}
425
426		/**
#	Line 435 | Line 429 | public class TreeSubSetTest extends JSR1
429		public void testIterator() {
430		NavigableSet q = populatedSet(SIZE);
431		int i = 0;
432	<	Iterator it = q.iterator();
432	>	Iterator it = q.iterator();
433		while (it.hasNext()) {
434		assertTrue(q.contains(it.next()));
435		++i;
#	Line 449 | Line 443 | public class TreeSubSetTest extends JSR1
443		public void testEmptyIterator() {
444		NavigableSet q = set0();
445		int i = 0;
446	<	Iterator it = q.iterator();
446	>	Iterator it = q.iterator();
447		while (it.hasNext()) {
448		assertTrue(q.contains(it.next()));
449		++i;
450		}
451	<	assertEquals(i, 0);
451	>	assertEquals(0, i);
452		}
453
454		/**
455		* iterator.remove removes current element
456		*/
457	<	public void testIteratorRemove () {
457	>	public void testIteratorRemove() {
458		final NavigableSet q = set0();
459		q.add(new Integer(2));
460		q.add(new Integer(1));
#	Line 471 | Line 465 | public class TreeSubSetTest extends JSR1
465		it.remove();
466
467		it = q.iterator();
468	<	assertEquals(it.next(), new Integer(2));
469	<	assertEquals(it.next(), new Integer(3));
468	>	assertEquals(2, it.next());
469	>	assertEquals(3, it.next());
470		assertFalse(it.hasNext());
471		}
472
479	–
473		/**
474		* toString contains toStrings of elements
475		*/
#	Line 484 | Line 477 | public class TreeSubSetTest extends JSR1
477		NavigableSet q = populatedSet(SIZE);
478		String s = q.toString();
479		for (int i = 0; i < SIZE; ++i) {
480	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
480	>	assertTrue(s.contains(String.valueOf(i)));
481		}
482		}
483
484		/**
485		* A deserialized serialized set has same elements
486		*/
487	<	public void testSerialization() {
488	<	NavigableSet q = populatedSet(SIZE);
489	<	try {
490	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
491	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
492	<	out.writeObject(q);
493	<	out.close();
494	<
495	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
496	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
497	<	NavigableSet r = (NavigableSet)in.readObject();
505	<	assertEquals(q.size(), r.size());
506	<	while (!q.isEmpty())
507	<	assertEquals(q.pollFirst(), r.pollFirst());
508	<	} catch (Exception e) {
509	<	e.printStackTrace();
510	<	unexpectedException();
487	>	public void testSerialization() throws Exception {
488	>	NavigableSet x = populatedSet(SIZE);
489	>	NavigableSet y = serialClone(x);
490	>
491	>	assertNotSame(x, y);
492	>	assertEquals(x.size(), y.size());
493	>	assertEquals(x, y);
494	>	assertEquals(y, x);
495	>	while (!x.isEmpty()) {
496	>	assertFalse(y.isEmpty());
497	>	assertEquals(x.pollFirst(), y.pollFirst());
498		}
499	+	assertTrue(y.isEmpty());
500		}
501
502		/**
#	Line 672 | Line 660 | public class TreeSubSetTest extends JSR1
660		q.add(new Object());
661		q.add(new Object());
662		shouldThrow();
663	<	}
676	<	catch (ClassCastException success) {}
663	>	} catch (ClassCastException success) {}
664		}
665
679	–
666		/**
667		* addAll(null) throws NPE
668		*/
#	Line 685 | Line 671 | public class TreeSubSetTest extends JSR1
671		NavigableSet q = dset0();
672		q.addAll(null);
673		shouldThrow();
674	<	}
689	<	catch (NullPointerException success) {}
674	>	} catch (NullPointerException success) {}
675		}
676	+
677		/**
678		* addAll of a collection with null elements throws NPE
679		*/
#	Line 697 | Line 683 | public class TreeSubSetTest extends JSR1
683		Integer[] ints = new Integer[SIZE];
684		q.addAll(Arrays.asList(ints));
685		shouldThrow();
686	<	}
701	<	catch (NullPointerException success) {}
686	>	} catch (NullPointerException success) {}
687		}
688	+
689		/**
690		* addAll of a collection with any null elements throws NPE after
691		* possibly adding some elements
#	Line 712 | Line 698 | public class TreeSubSetTest extends JSR1
698		ints[i] = new Integer(i+SIZE);
699		q.addAll(Arrays.asList(ints));
700		shouldThrow();
701	<	}
716	<	catch (NullPointerException success) {}
701	>	} catch (NullPointerException success) {}
702		}
703
704		/**
705		* Set contains all elements of successful addAll
706		*/
707		public void testDescendingAddAll5() {
708	<	try {
709	<	Integer[] empty = new Integer[0];
710	<	Integer[] ints = new Integer[SIZE];
711	<	for (int i = 0; i < SIZE; ++i)
712	<	ints[i] = new Integer(SIZE-1- i);
713	<	NavigableSet q = dset0();
714	<	assertFalse(q.addAll(Arrays.asList(empty)));
715	<	assertTrue(q.addAll(Arrays.asList(ints)));
716	<	for (int i = 0; i < SIZE; ++i)
732	<	assertEquals(new Integer(i), q.pollFirst());
733	<	}
734	<	finally {}
708	>	Integer[] empty = new Integer[0];
709	>	Integer[] ints = new Integer[SIZE];
710	>	for (int i = 0; i < SIZE; ++i)
711	>	ints[i] = new Integer(SIZE-1- i);
712	>	NavigableSet q = dset0();
713	>	assertFalse(q.addAll(Arrays.asList(empty)));
714	>	assertTrue(q.addAll(Arrays.asList(ints)));
715	>	for (int i = 0; i < SIZE; ++i)
716	>	assertEquals(new Integer(i), q.pollFirst());
717		}
718
719		/**
#	Line 740 | Line 722 | public class TreeSubSetTest extends JSR1
722		public void testDescendingPoll() {
723		NavigableSet q = populatedSet(SIZE);
724		for (int i = 0; i < SIZE; ++i) {
725	<	assertEquals(i, ((Integer)q.pollFirst()).intValue());
725	>	assertEquals(i, q.pollFirst());
726		}
727	<	assertNull(q.pollFirst());
727	>	assertNull(q.pollFirst());
728		}
729
730		/**
#	Line 750 | Line 732 | public class TreeSubSetTest extends JSR1
732		*/
733		public void testDescendingRemoveElement() {
734		NavigableSet q = populatedSet(SIZE);
735	<	for (int i = 1; i < SIZE; i+=2) {
735	>	for (int i = 1; i < SIZE; i += 2) {
736		assertTrue(q.remove(new Integer(i)));
737		}
738	<	for (int i = 0; i < SIZE; i+=2) {
738	>	for (int i = 0; i < SIZE; i += 2) {
739		assertTrue(q.remove(new Integer(i)));
740		assertFalse(q.remove(new Integer(i+1)));
741		}
#	Line 780 | Line 762 | public class TreeSubSetTest extends JSR1
762		q.clear();
763		assertTrue(q.isEmpty());
764		assertEquals(0, q.size());
765	<	q.add(new Integer(1));
765	>	assertTrue(q.add(new Integer(1)));
766		assertFalse(q.isEmpty());
767		q.clear();
768		assertTrue(q.isEmpty());
#	Line 835 | Line 817 | public class TreeSubSetTest extends JSR1
817		}
818		}
819
838	–
839	–
820		/**
821		* lower returns preceding element
822		*/
#	Line 853 | Line 833 | public class TreeSubSetTest extends JSR1
833
834		Object e4 = q.lower(zero);
835		assertNull(e4);
856	–
836		}
837
838		/**
#	Line 872 | Line 851 | public class TreeSubSetTest extends JSR1
851
852		Object e4 = q.higher(m6);
853		assertNull(e4);
875	–
854		}
855
856		/**
#	Line 891 | Line 869 | public class TreeSubSetTest extends JSR1
869
870		Object e4 = q.floor(zero);
871		assertNull(e4);
894	–
872		}
873
874		/**
#	Line 910 | Line 887 | public class TreeSubSetTest extends JSR1
887
888		Object e4 = q.ceiling(m6);
889		assertNull(e4);
913	–
890		}
891
892		/**
#	Line 918 | Line 894 | public class TreeSubSetTest extends JSR1
894		*/
895		public void testDescendingToArray() {
896		NavigableSet q = populatedSet(SIZE);
897	<	Object[] o = q.toArray();
897	>	Object[] o = q.toArray();
898		Arrays.sort(o);
899	<	for (int i = 0; i < o.length; i++)
900	<	assertEquals(o[i], q.pollFirst());
899	>	for (int i = 0; i < o.length; i++)
900	>	assertEquals(o[i], q.pollFirst());
901		}
902
903		/**
#	Line 929 | Line 905 | public class TreeSubSetTest extends JSR1
905		*/
906		public void testDescendingToArray2() {
907		NavigableSet q = populatedSet(SIZE);
908	<	Integer[] ints = new Integer[SIZE];
909	<	ints = (Integer[])q.toArray(ints);
908	>	Integer[] ints = new Integer[SIZE];
909	>	assertSame(ints, q.toArray(ints));
910		Arrays.sort(ints);
911		for (int i = 0; i < ints.length; i++)
912		assertEquals(ints[i], q.pollFirst());
#	Line 942 | Line 918 | public class TreeSubSetTest extends JSR1
918		public void testDescendingIterator() {
919		NavigableSet q = populatedSet(SIZE);
920		int i = 0;
921	<	Iterator it = q.iterator();
921	>	Iterator it = q.iterator();
922		while (it.hasNext()) {
923		assertTrue(q.contains(it.next()));
924		++i;
#	Line 956 | Line 932 | public class TreeSubSetTest extends JSR1
932		public void testDescendingEmptyIterator() {
933		NavigableSet q = dset0();
934		int i = 0;
935	<	Iterator it = q.iterator();
935	>	Iterator it = q.iterator();
936		while (it.hasNext()) {
937		assertTrue(q.contains(it.next()));
938		++i;
939		}
940	<	assertEquals(i, 0);
940	>	assertEquals(0, i);
941		}
942
943		/**
944		* iterator.remove removes current element
945		*/
946	<	public void testDescendingIteratorRemove () {
946	>	public void testDescendingIteratorRemove() {
947		final NavigableSet q = dset0();
948		q.add(new Integer(2));
949		q.add(new Integer(1));
#	Line 978 | Line 954 | public class TreeSubSetTest extends JSR1
954		it.remove();
955
956		it = q.iterator();
957	<	assertEquals(it.next(), new Integer(2));
958	<	assertEquals(it.next(), new Integer(3));
957	>	assertEquals(2, it.next());
958	>	assertEquals(3, it.next());
959		assertFalse(it.hasNext());
960		}
961
986	–
962		/**
963		* toString contains toStrings of elements
964		*/
#	Line 991 | Line 966 | public class TreeSubSetTest extends JSR1
966		NavigableSet q = populatedSet(SIZE);
967		String s = q.toString();
968		for (int i = 0; i < SIZE; ++i) {
969	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
969	>	assertTrue(s.contains(String.valueOf(i)));
970		}
971		}
972
973		/**
974		* A deserialized serialized set has same elements
975		*/
976	<	public void testDescendingSerialization() {
977	<	NavigableSet q = populatedSet(SIZE);
978	<	try {
979	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
980	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
981	<	out.writeObject(q);
982	<	out.close();
983	<
984	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
985	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
986	<	NavigableSet r = (NavigableSet)in.readObject();
987	<	assertEquals(q.size(), r.size());
1013	<	while (!q.isEmpty())
1014	<	assertEquals(q.pollFirst(), r.pollFirst());
1015	<	} catch (Exception e) {
1016	<	e.printStackTrace();
1017	<	unexpectedException();
976	>	public void testDescendingSerialization() throws Exception {
977	>	NavigableSet x = dset5();
978	>	NavigableSet y = serialClone(x);
979	>
980	>	assertNotSame(x, y);
981	>	assertEquals(x.size(), y.size());
982	>	assertEquals(x.toString(), y.toString());
983	>	assertEquals(x, y);
984	>	assertEquals(y, x);
985	>	while (!x.isEmpty()) {
986	>	assertFalse(y.isEmpty());
987	>	assertEquals(x.pollFirst(), y.pollFirst());
988		}
989	+	assertTrue(y.isEmpty());
990		}
991
992		/**
#	Line 1137 | Line 1108 | public class TreeSubSetTest extends JSR1
1108		assertEquals(4, set.size());
1109		}
1110
1111	+	/**
1112	+	* addAll is idempotent
1113	+	*/
1114	+	public void testAddAll_idempotent() throws Exception {
1115	+	Set x = populatedSet(SIZE);
1116	+	Set y = new TreeSet(x);
1117	+	y.addAll(x);
1118	+	assertEquals(x, y);
1119	+	assertEquals(y, x);
1120	+	}
1121	+
1122		}

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