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/publicdomain/zero/1.0/ |
5 |
*/ |
6 |
|
7 |
import java.util.Arrays; |
8 |
import java.util.Comparator; |
9 |
import java.util.Iterator; |
10 |
import java.util.NavigableSet; |
11 |
import java.util.SortedSet; |
12 |
import java.util.concurrent.ConcurrentSkipListSet; |
13 |
|
14 |
import junit.framework.Test; |
15 |
import junit.framework.TestSuite; |
16 |
|
17 |
public class ConcurrentSkipListSubSetTest extends JSR166TestCase { |
18 |
public static void main(String[] args) { |
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main(suite(), args); |
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} |
21 |
public static Test suite() { |
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return new TestSuite(ConcurrentSkipListSubSetTest.class); |
23 |
} |
24 |
|
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static class MyReverseComparator implements Comparator { |
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public int compare(Object x, Object y) { |
27 |
return ((Comparable)y).compareTo(x); |
28 |
} |
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} |
30 |
|
31 |
/** |
32 |
* Returns a new set of given size containing consecutive |
33 |
* Integers 0 ... n - 1. |
34 |
*/ |
35 |
private static NavigableSet<Integer> populatedSet(int n) { |
36 |
ConcurrentSkipListSet<Integer> q = new ConcurrentSkipListSet<>(); |
37 |
assertTrue(q.isEmpty()); |
38 |
|
39 |
for (int i = n - 1; i >= 0; i -= 2) |
40 |
assertTrue(q.add(new Integer(i))); |
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for (int i = (n & 1); i < n; i += 2) |
42 |
assertTrue(q.add(new Integer(i))); |
43 |
assertTrue(q.add(new Integer(-n))); |
44 |
assertTrue(q.add(new Integer(n))); |
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NavigableSet s = q.subSet(new Integer(0), true, new Integer(n), false); |
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assertFalse(s.isEmpty()); |
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assertEquals(n, s.size()); |
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return s; |
49 |
} |
50 |
|
51 |
/** |
52 |
* Returns a new set of first 5 ints. |
53 |
*/ |
54 |
private static NavigableSet set5() { |
55 |
ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
56 |
assertTrue(q.isEmpty()); |
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q.add(one); |
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q.add(two); |
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q.add(three); |
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q.add(four); |
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q.add(five); |
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q.add(zero); |
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q.add(seven); |
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NavigableSet s = q.subSet(one, true, seven, false); |
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assertEquals(5, s.size()); |
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return s; |
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} |
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|
69 |
/** |
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* Returns a new set of first 5 negative ints. |
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*/ |
72 |
private static NavigableSet dset5() { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
74 |
assertTrue(q.isEmpty()); |
75 |
q.add(m1); |
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q.add(m2); |
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q.add(m3); |
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q.add(m4); |
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q.add(m5); |
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NavigableSet s = q.descendingSet(); |
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assertEquals(5, s.size()); |
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return s; |
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} |
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|
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private static NavigableSet set0() { |
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ConcurrentSkipListSet set = new ConcurrentSkipListSet(); |
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assertTrue(set.isEmpty()); |
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return set.tailSet(m1, true); |
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} |
90 |
|
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private static NavigableSet dset0() { |
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ConcurrentSkipListSet set = new ConcurrentSkipListSet(); |
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assertTrue(set.isEmpty()); |
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return set; |
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} |
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|
97 |
/** |
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* A new set has unbounded capacity |
99 |
*/ |
100 |
public void testConstructor1() { |
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assertEquals(0, set0().size()); |
102 |
} |
103 |
|
104 |
/** |
105 |
* isEmpty is true before add, false after |
106 |
*/ |
107 |
public void testEmpty() { |
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NavigableSet q = set0(); |
109 |
assertTrue(q.isEmpty()); |
110 |
q.add(new Integer(1)); |
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assertFalse(q.isEmpty()); |
112 |
q.add(new Integer(2)); |
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q.pollFirst(); |
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q.pollFirst(); |
115 |
assertTrue(q.isEmpty()); |
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} |
117 |
|
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/** |
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* size changes when elements added and removed |
120 |
*/ |
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public void testSize() { |
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NavigableSet q = populatedSet(SIZE); |
123 |
for (int i = 0; i < SIZE; ++i) { |
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assertEquals(SIZE - i, q.size()); |
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q.pollFirst(); |
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} |
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for (int i = 0; i < SIZE; ++i) { |
128 |
assertEquals(i, q.size()); |
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q.add(new Integer(i)); |
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} |
131 |
} |
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|
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/** |
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* add(null) throws NPE |
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*/ |
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public void testAddNull() { |
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NavigableSet q = set0(); |
138 |
try { |
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q.add(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
143 |
|
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/** |
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* Add of comparable element succeeds |
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*/ |
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public void testAdd() { |
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NavigableSet q = set0(); |
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assertTrue(q.add(six)); |
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} |
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|
152 |
/** |
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* Add of duplicate element fails |
154 |
*/ |
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public void testAddDup() { |
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NavigableSet q = set0(); |
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assertTrue(q.add(six)); |
158 |
assertFalse(q.add(six)); |
159 |
} |
160 |
|
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/** |
162 |
* Add of non-Comparable throws CCE |
163 |
*/ |
164 |
public void testAddNonComparable() { |
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NavigableSet q = set0(); |
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try { |
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q.add(new Object()); |
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q.add(new Object()); |
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shouldThrow(); |
170 |
} catch (ClassCastException success) {} |
171 |
} |
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|
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/** |
174 |
* addAll(null) throws NPE |
175 |
*/ |
176 |
public void testAddAll1() { |
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NavigableSet q = set0(); |
178 |
try { |
179 |
q.addAll(null); |
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shouldThrow(); |
181 |
} catch (NullPointerException success) {} |
182 |
} |
183 |
|
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/** |
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* addAll of a collection with null elements throws NPE |
186 |
*/ |
187 |
public void testAddAll2() { |
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NavigableSet q = set0(); |
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Integer[] ints = new Integer[SIZE]; |
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try { |
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q.addAll(Arrays.asList(ints)); |
192 |
shouldThrow(); |
193 |
} catch (NullPointerException success) {} |
194 |
} |
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|
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/** |
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* addAll of a collection with any null elements throws NPE after |
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* possibly adding some elements |
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*/ |
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public void testAddAll3() { |
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NavigableSet q = set0(); |
202 |
Integer[] ints = new Integer[SIZE]; |
203 |
for (int i = 0; i < SIZE - 1; ++i) |
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ints[i] = new Integer(i + SIZE); |
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try { |
206 |
q.addAll(Arrays.asList(ints)); |
207 |
shouldThrow(); |
208 |
} catch (NullPointerException success) {} |
209 |
} |
210 |
|
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/** |
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* Set contains all elements of successful addAll |
213 |
*/ |
214 |
public void testAddAll5() { |
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Integer[] empty = new Integer[0]; |
216 |
Integer[] ints = new Integer[SIZE]; |
217 |
for (int i = 0; i < SIZE; ++i) |
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ints[i] = new Integer(SIZE - 1 - i); |
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NavigableSet q = set0(); |
220 |
assertFalse(q.addAll(Arrays.asList(empty))); |
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assertTrue(q.addAll(Arrays.asList(ints))); |
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for (int i = 0; i < SIZE; ++i) |
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assertEquals(new Integer(i), q.pollFirst()); |
224 |
} |
225 |
|
226 |
/** |
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* poll succeeds unless empty |
228 |
*/ |
229 |
public void testPoll() { |
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NavigableSet q = populatedSet(SIZE); |
231 |
for (int i = 0; i < SIZE; ++i) { |
232 |
assertEquals(i, q.pollFirst()); |
233 |
} |
234 |
assertNull(q.pollFirst()); |
235 |
} |
236 |
|
237 |
/** |
238 |
* remove(x) removes x and returns true if present |
239 |
*/ |
240 |
public void testRemoveElement() { |
241 |
NavigableSet q = populatedSet(SIZE); |
242 |
for (int i = 1; i < SIZE; i += 2) { |
243 |
assertTrue(q.contains(i)); |
244 |
assertTrue(q.remove(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(i)); |
251 |
assertFalse(q.contains(i)); |
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assertFalse(q.remove(i + 1)); |
253 |
assertFalse(q.contains(i + 1)); |
254 |
} |
255 |
assertTrue(q.isEmpty()); |
256 |
} |
257 |
|
258 |
/** |
259 |
* contains(x) reports true when elements added but not yet removed |
260 |
*/ |
261 |
public void testContains() { |
262 |
NavigableSet q = populatedSet(SIZE); |
263 |
for (int i = 0; i < SIZE; ++i) { |
264 |
assertTrue(q.contains(new Integer(i))); |
265 |
q.pollFirst(); |
266 |
assertFalse(q.contains(new Integer(i))); |
267 |
} |
268 |
} |
269 |
|
270 |
/** |
271 |
* clear removes all elements |
272 |
*/ |
273 |
public void testClear() { |
274 |
NavigableSet q = populatedSet(SIZE); |
275 |
q.clear(); |
276 |
assertTrue(q.isEmpty()); |
277 |
assertEquals(0, q.size()); |
278 |
q.add(new Integer(1)); |
279 |
assertFalse(q.isEmpty()); |
280 |
q.clear(); |
281 |
assertTrue(q.isEmpty()); |
282 |
} |
283 |
|
284 |
/** |
285 |
* containsAll(c) is true when c contains a subset of elements |
286 |
*/ |
287 |
public void testContainsAll() { |
288 |
NavigableSet q = populatedSet(SIZE); |
289 |
NavigableSet p = set0(); |
290 |
for (int i = 0; i < SIZE; ++i) { |
291 |
assertTrue(q.containsAll(p)); |
292 |
assertFalse(p.containsAll(q)); |
293 |
p.add(new Integer(i)); |
294 |
} |
295 |
assertTrue(p.containsAll(q)); |
296 |
} |
297 |
|
298 |
/** |
299 |
* retainAll(c) retains only those elements of c and reports true if changed |
300 |
*/ |
301 |
public void testRetainAll() { |
302 |
NavigableSet q = populatedSet(SIZE); |
303 |
NavigableSet p = populatedSet(SIZE); |
304 |
for (int i = 0; i < SIZE; ++i) { |
305 |
boolean changed = q.retainAll(p); |
306 |
if (i == 0) |
307 |
assertFalse(changed); |
308 |
else |
309 |
assertTrue(changed); |
310 |
|
311 |
assertTrue(q.containsAll(p)); |
312 |
assertEquals(SIZE - i, q.size()); |
313 |
p.pollFirst(); |
314 |
} |
315 |
} |
316 |
|
317 |
/** |
318 |
* removeAll(c) removes only those elements of c and reports true if changed |
319 |
*/ |
320 |
public void testRemoveAll() { |
321 |
for (int i = 1; i < SIZE; ++i) { |
322 |
NavigableSet q = populatedSet(SIZE); |
323 |
NavigableSet p = populatedSet(i); |
324 |
assertTrue(q.removeAll(p)); |
325 |
assertEquals(SIZE - i, q.size()); |
326 |
for (int j = 0; j < i; ++j) { |
327 |
Integer x = (Integer)(p.pollFirst()); |
328 |
assertFalse(q.contains(x)); |
329 |
} |
330 |
} |
331 |
} |
332 |
|
333 |
/** |
334 |
* lower returns preceding element |
335 |
*/ |
336 |
public void testLower() { |
337 |
NavigableSet q = set5(); |
338 |
Object e1 = q.lower(three); |
339 |
assertEquals(two, e1); |
340 |
|
341 |
Object e2 = q.lower(six); |
342 |
assertEquals(five, e2); |
343 |
|
344 |
Object e3 = q.lower(one); |
345 |
assertNull(e3); |
346 |
|
347 |
Object e4 = q.lower(zero); |
348 |
assertNull(e4); |
349 |
} |
350 |
|
351 |
/** |
352 |
* higher returns next element |
353 |
*/ |
354 |
public void testHigher() { |
355 |
NavigableSet q = set5(); |
356 |
Object e1 = q.higher(three); |
357 |
assertEquals(four, e1); |
358 |
|
359 |
Object e2 = q.higher(zero); |
360 |
assertEquals(one, e2); |
361 |
|
362 |
Object e3 = q.higher(five); |
363 |
assertNull(e3); |
364 |
|
365 |
Object e4 = q.higher(six); |
366 |
assertNull(e4); |
367 |
} |
368 |
|
369 |
/** |
370 |
* floor returns preceding element |
371 |
*/ |
372 |
public void testFloor() { |
373 |
NavigableSet q = set5(); |
374 |
Object e1 = q.floor(three); |
375 |
assertEquals(three, e1); |
376 |
|
377 |
Object e2 = q.floor(six); |
378 |
assertEquals(five, e2); |
379 |
|
380 |
Object e3 = q.floor(one); |
381 |
assertEquals(one, e3); |
382 |
|
383 |
Object e4 = q.floor(zero); |
384 |
assertNull(e4); |
385 |
} |
386 |
|
387 |
/** |
388 |
* ceiling returns next element |
389 |
*/ |
390 |
public void testCeiling() { |
391 |
NavigableSet q = set5(); |
392 |
Object e1 = q.ceiling(three); |
393 |
assertEquals(three, e1); |
394 |
|
395 |
Object e2 = q.ceiling(zero); |
396 |
assertEquals(one, e2); |
397 |
|
398 |
Object e3 = q.ceiling(five); |
399 |
assertEquals(five, e3); |
400 |
|
401 |
Object e4 = q.ceiling(six); |
402 |
assertNull(e4); |
403 |
} |
404 |
|
405 |
/** |
406 |
* toArray contains all elements in sorted order |
407 |
*/ |
408 |
public void testToArray() { |
409 |
NavigableSet q = populatedSet(SIZE); |
410 |
Object[] o = q.toArray(); |
411 |
for (int i = 0; i < o.length; i++) |
412 |
assertSame(o[i], q.pollFirst()); |
413 |
} |
414 |
|
415 |
/** |
416 |
* toArray(a) contains all elements in sorted order |
417 |
*/ |
418 |
public void testToArray2() { |
419 |
NavigableSet<Integer> q = populatedSet(SIZE); |
420 |
Integer[] ints = new Integer[SIZE]; |
421 |
Integer[] array = q.toArray(ints); |
422 |
assertSame(ints, array); |
423 |
for (int i = 0; i < ints.length; i++) |
424 |
assertSame(ints[i], q.pollFirst()); |
425 |
} |
426 |
|
427 |
/** |
428 |
* iterator iterates through all elements |
429 |
*/ |
430 |
public void testIterator() { |
431 |
NavigableSet q = populatedSet(SIZE); |
432 |
Iterator it = q.iterator(); |
433 |
int i; |
434 |
for (i = 0; it.hasNext(); i++) |
435 |
assertTrue(q.contains(it.next())); |
436 |
assertEquals(i, SIZE); |
437 |
assertIteratorExhausted(it); |
438 |
} |
439 |
|
440 |
/** |
441 |
* iterator of empty set has no elements |
442 |
*/ |
443 |
public void testEmptyIterator() { |
444 |
assertIteratorExhausted(set0().iterator()); |
445 |
} |
446 |
|
447 |
/** |
448 |
* iterator.remove removes current element |
449 |
*/ |
450 |
public void testIteratorRemove() { |
451 |
final NavigableSet q = set0(); |
452 |
q.add(new Integer(2)); |
453 |
q.add(new Integer(1)); |
454 |
q.add(new Integer(3)); |
455 |
|
456 |
Iterator it = q.iterator(); |
457 |
it.next(); |
458 |
it.remove(); |
459 |
|
460 |
it = q.iterator(); |
461 |
assertEquals(it.next(), new Integer(2)); |
462 |
assertEquals(it.next(), new Integer(3)); |
463 |
assertFalse(it.hasNext()); |
464 |
} |
465 |
|
466 |
/** |
467 |
* toString contains toStrings of elements |
468 |
*/ |
469 |
public void testToString() { |
470 |
NavigableSet q = populatedSet(SIZE); |
471 |
String s = q.toString(); |
472 |
for (int i = 0; i < SIZE; ++i) { |
473 |
assertTrue(s.contains(String.valueOf(i))); |
474 |
} |
475 |
} |
476 |
|
477 |
/** |
478 |
* A deserialized/reserialized set equals original |
479 |
*/ |
480 |
public void testSerialization() throws Exception { |
481 |
NavigableSet x = populatedSet(SIZE); |
482 |
NavigableSet y = serialClone(x); |
483 |
|
484 |
assertNotSame(y, x); |
485 |
assertEquals(x.size(), y.size()); |
486 |
assertEquals(x, y); |
487 |
assertEquals(y, x); |
488 |
while (!x.isEmpty()) { |
489 |
assertFalse(y.isEmpty()); |
490 |
assertEquals(x.pollFirst(), y.pollFirst()); |
491 |
} |
492 |
assertTrue(y.isEmpty()); |
493 |
} |
494 |
|
495 |
/** |
496 |
* subSet returns set with keys in requested range |
497 |
*/ |
498 |
public void testSubSetContents() { |
499 |
NavigableSet set = set5(); |
500 |
SortedSet sm = set.subSet(two, four); |
501 |
assertEquals(two, sm.first()); |
502 |
assertEquals(three, sm.last()); |
503 |
assertEquals(2, sm.size()); |
504 |
assertFalse(sm.contains(one)); |
505 |
assertTrue(sm.contains(two)); |
506 |
assertTrue(sm.contains(three)); |
507 |
assertFalse(sm.contains(four)); |
508 |
assertFalse(sm.contains(five)); |
509 |
Iterator i = sm.iterator(); |
510 |
Object k; |
511 |
k = (Integer)(i.next()); |
512 |
assertEquals(two, k); |
513 |
k = (Integer)(i.next()); |
514 |
assertEquals(three, k); |
515 |
assertFalse(i.hasNext()); |
516 |
Iterator j = sm.iterator(); |
517 |
j.next(); |
518 |
j.remove(); |
519 |
assertFalse(set.contains(two)); |
520 |
assertEquals(4, set.size()); |
521 |
assertEquals(1, sm.size()); |
522 |
assertEquals(three, sm.first()); |
523 |
assertEquals(three, sm.last()); |
524 |
assertTrue(sm.remove(three)); |
525 |
assertTrue(sm.isEmpty()); |
526 |
assertEquals(3, set.size()); |
527 |
} |
528 |
|
529 |
public void testSubSetContents2() { |
530 |
NavigableSet set = set5(); |
531 |
SortedSet sm = set.subSet(two, three); |
532 |
assertEquals(1, sm.size()); |
533 |
assertEquals(two, sm.first()); |
534 |
assertEquals(two, sm.last()); |
535 |
assertFalse(sm.contains(one)); |
536 |
assertTrue(sm.contains(two)); |
537 |
assertFalse(sm.contains(three)); |
538 |
assertFalse(sm.contains(four)); |
539 |
assertFalse(sm.contains(five)); |
540 |
Iterator i = sm.iterator(); |
541 |
Object k; |
542 |
k = (Integer)(i.next()); |
543 |
assertEquals(two, k); |
544 |
assertFalse(i.hasNext()); |
545 |
Iterator j = sm.iterator(); |
546 |
j.next(); |
547 |
j.remove(); |
548 |
assertFalse(set.contains(two)); |
549 |
assertEquals(4, set.size()); |
550 |
assertEquals(0, sm.size()); |
551 |
assertTrue(sm.isEmpty()); |
552 |
assertFalse(sm.remove(three)); |
553 |
assertEquals(4, set.size()); |
554 |
} |
555 |
|
556 |
/** |
557 |
* headSet returns set with keys in requested range |
558 |
*/ |
559 |
public void testHeadSetContents() { |
560 |
NavigableSet set = set5(); |
561 |
SortedSet sm = set.headSet(four); |
562 |
assertTrue(sm.contains(one)); |
563 |
assertTrue(sm.contains(two)); |
564 |
assertTrue(sm.contains(three)); |
565 |
assertFalse(sm.contains(four)); |
566 |
assertFalse(sm.contains(five)); |
567 |
Iterator i = sm.iterator(); |
568 |
Object k; |
569 |
k = (Integer)(i.next()); |
570 |
assertEquals(one, k); |
571 |
k = (Integer)(i.next()); |
572 |
assertEquals(two, k); |
573 |
k = (Integer)(i.next()); |
574 |
assertEquals(three, k); |
575 |
assertFalse(i.hasNext()); |
576 |
sm.clear(); |
577 |
assertTrue(sm.isEmpty()); |
578 |
assertEquals(2, set.size()); |
579 |
assertEquals(four, set.first()); |
580 |
} |
581 |
|
582 |
/** |
583 |
* tailSet returns set with keys in requested range |
584 |
*/ |
585 |
public void testTailSetContents() { |
586 |
NavigableSet set = set5(); |
587 |
SortedSet sm = set.tailSet(two); |
588 |
assertFalse(sm.contains(one)); |
589 |
assertTrue(sm.contains(two)); |
590 |
assertTrue(sm.contains(three)); |
591 |
assertTrue(sm.contains(four)); |
592 |
assertTrue(sm.contains(five)); |
593 |
Iterator i = sm.iterator(); |
594 |
Object k; |
595 |
k = (Integer)(i.next()); |
596 |
assertEquals(two, k); |
597 |
k = (Integer)(i.next()); |
598 |
assertEquals(three, k); |
599 |
k = (Integer)(i.next()); |
600 |
assertEquals(four, k); |
601 |
k = (Integer)(i.next()); |
602 |
assertEquals(five, k); |
603 |
assertFalse(i.hasNext()); |
604 |
|
605 |
SortedSet ssm = sm.tailSet(four); |
606 |
assertEquals(four, ssm.first()); |
607 |
assertEquals(five, ssm.last()); |
608 |
assertTrue(ssm.remove(four)); |
609 |
assertEquals(1, ssm.size()); |
610 |
assertEquals(3, sm.size()); |
611 |
assertEquals(4, set.size()); |
612 |
} |
613 |
|
614 |
/** |
615 |
* size changes when elements added and removed |
616 |
*/ |
617 |
public void testDescendingSize() { |
618 |
NavigableSet q = populatedSet(SIZE); |
619 |
for (int i = 0; i < SIZE; ++i) { |
620 |
assertEquals(SIZE - i, q.size()); |
621 |
q.pollFirst(); |
622 |
} |
623 |
for (int i = 0; i < SIZE; ++i) { |
624 |
assertEquals(i, q.size()); |
625 |
q.add(new Integer(i)); |
626 |
} |
627 |
} |
628 |
|
629 |
/** |
630 |
* add(null) throws NPE |
631 |
*/ |
632 |
public void testDescendingAddNull() { |
633 |
NavigableSet q = dset0(); |
634 |
try { |
635 |
q.add(null); |
636 |
shouldThrow(); |
637 |
} catch (NullPointerException success) {} |
638 |
} |
639 |
|
640 |
/** |
641 |
* Add of comparable element succeeds |
642 |
*/ |
643 |
public void testDescendingAdd() { |
644 |
NavigableSet q = dset0(); |
645 |
assertTrue(q.add(m6)); |
646 |
} |
647 |
|
648 |
/** |
649 |
* Add of duplicate element fails |
650 |
*/ |
651 |
public void testDescendingAddDup() { |
652 |
NavigableSet q = dset0(); |
653 |
assertTrue(q.add(m6)); |
654 |
assertFalse(q.add(m6)); |
655 |
} |
656 |
|
657 |
/** |
658 |
* Add of non-Comparable throws CCE |
659 |
*/ |
660 |
public void testDescendingAddNonComparable() { |
661 |
NavigableSet q = dset0(); |
662 |
try { |
663 |
q.add(new Object()); |
664 |
q.add(new Object()); |
665 |
shouldThrow(); |
666 |
} catch (ClassCastException success) {} |
667 |
} |
668 |
|
669 |
/** |
670 |
* addAll(null) throws NPE |
671 |
*/ |
672 |
public void testDescendingAddAll1() { |
673 |
NavigableSet q = dset0(); |
674 |
try { |
675 |
q.addAll(null); |
676 |
shouldThrow(); |
677 |
} catch (NullPointerException success) {} |
678 |
} |
679 |
|
680 |
/** |
681 |
* addAll of a collection with null elements throws NPE |
682 |
*/ |
683 |
public void testDescendingAddAll2() { |
684 |
NavigableSet q = dset0(); |
685 |
Integer[] ints = new Integer[SIZE]; |
686 |
try { |
687 |
q.addAll(Arrays.asList(ints)); |
688 |
shouldThrow(); |
689 |
} catch (NullPointerException success) {} |
690 |
} |
691 |
|
692 |
/** |
693 |
* addAll of a collection with any null elements throws NPE after |
694 |
* possibly adding some elements |
695 |
*/ |
696 |
public void testDescendingAddAll3() { |
697 |
NavigableSet q = dset0(); |
698 |
Integer[] ints = new Integer[SIZE]; |
699 |
for (int i = 0; i < SIZE - 1; ++i) |
700 |
ints[i] = new Integer(i + SIZE); |
701 |
try { |
702 |
q.addAll(Arrays.asList(ints)); |
703 |
shouldThrow(); |
704 |
} catch (NullPointerException success) {} |
705 |
} |
706 |
|
707 |
/** |
708 |
* Set contains all elements of successful addAll |
709 |
*/ |
710 |
public void testDescendingAddAll5() { |
711 |
Integer[] empty = new Integer[0]; |
712 |
Integer[] ints = new Integer[SIZE]; |
713 |
for (int i = 0; i < SIZE; ++i) |
714 |
ints[i] = new Integer(SIZE - 1 - i); |
715 |
NavigableSet q = dset0(); |
716 |
assertFalse(q.addAll(Arrays.asList(empty))); |
717 |
assertTrue(q.addAll(Arrays.asList(ints))); |
718 |
for (int i = 0; i < SIZE; ++i) |
719 |
assertEquals(new Integer(i), q.pollFirst()); |
720 |
} |
721 |
|
722 |
/** |
723 |
* poll succeeds unless empty |
724 |
*/ |
725 |
public void testDescendingPoll() { |
726 |
NavigableSet q = populatedSet(SIZE); |
727 |
for (int i = 0; i < SIZE; ++i) { |
728 |
assertEquals(i, q.pollFirst()); |
729 |
} |
730 |
assertNull(q.pollFirst()); |
731 |
} |
732 |
|
733 |
/** |
734 |
* remove(x) removes x and returns true if present |
735 |
*/ |
736 |
public void testDescendingRemoveElement() { |
737 |
NavigableSet q = populatedSet(SIZE); |
738 |
for (int i = 1; i < SIZE; i += 2) { |
739 |
assertTrue(q.remove(new Integer(i))); |
740 |
} |
741 |
for (int i = 0; i < SIZE; i += 2 ) { |
742 |
assertTrue(q.remove(new Integer(i))); |
743 |
assertFalse(q.remove(new Integer(i + 1))); |
744 |
} |
745 |
assertTrue(q.isEmpty()); |
746 |
} |
747 |
|
748 |
/** |
749 |
* contains(x) reports true when elements added but not yet removed |
750 |
*/ |
751 |
public void testDescendingContains() { |
752 |
NavigableSet q = populatedSet(SIZE); |
753 |
for (int i = 0; i < SIZE; ++i) { |
754 |
assertTrue(q.contains(new Integer(i))); |
755 |
q.pollFirst(); |
756 |
assertFalse(q.contains(new Integer(i))); |
757 |
} |
758 |
} |
759 |
|
760 |
/** |
761 |
* clear removes all elements |
762 |
*/ |
763 |
public void testDescendingClear() { |
764 |
NavigableSet q = populatedSet(SIZE); |
765 |
q.clear(); |
766 |
assertTrue(q.isEmpty()); |
767 |
assertEquals(0, q.size()); |
768 |
q.add(new Integer(1)); |
769 |
assertFalse(q.isEmpty()); |
770 |
q.clear(); |
771 |
assertTrue(q.isEmpty()); |
772 |
} |
773 |
|
774 |
/** |
775 |
* containsAll(c) is true when c contains a subset of elements |
776 |
*/ |
777 |
public void testDescendingContainsAll() { |
778 |
NavigableSet q = populatedSet(SIZE); |
779 |
NavigableSet p = dset0(); |
780 |
for (int i = 0; i < SIZE; ++i) { |
781 |
assertTrue(q.containsAll(p)); |
782 |
assertFalse(p.containsAll(q)); |
783 |
p.add(new Integer(i)); |
784 |
} |
785 |
assertTrue(p.containsAll(q)); |
786 |
} |
787 |
|
788 |
/** |
789 |
* retainAll(c) retains only those elements of c and reports true if changed |
790 |
*/ |
791 |
public void testDescendingRetainAll() { |
792 |
NavigableSet q = populatedSet(SIZE); |
793 |
NavigableSet p = populatedSet(SIZE); |
794 |
for (int i = 0; i < SIZE; ++i) { |
795 |
boolean changed = q.retainAll(p); |
796 |
if (i == 0) |
797 |
assertFalse(changed); |
798 |
else |
799 |
assertTrue(changed); |
800 |
|
801 |
assertTrue(q.containsAll(p)); |
802 |
assertEquals(SIZE - i, q.size()); |
803 |
p.pollFirst(); |
804 |
} |
805 |
} |
806 |
|
807 |
/** |
808 |
* removeAll(c) removes only those elements of c and reports true if changed |
809 |
*/ |
810 |
public void testDescendingRemoveAll() { |
811 |
for (int i = 1; i < SIZE; ++i) { |
812 |
NavigableSet q = populatedSet(SIZE); |
813 |
NavigableSet p = populatedSet(i); |
814 |
assertTrue(q.removeAll(p)); |
815 |
assertEquals(SIZE - i, q.size()); |
816 |
for (int j = 0; j < i; ++j) { |
817 |
Integer x = (Integer)(p.pollFirst()); |
818 |
assertFalse(q.contains(x)); |
819 |
} |
820 |
} |
821 |
} |
822 |
|
823 |
/** |
824 |
* lower returns preceding element |
825 |
*/ |
826 |
public void testDescendingLower() { |
827 |
NavigableSet q = dset5(); |
828 |
Object e1 = q.lower(m3); |
829 |
assertEquals(m2, e1); |
830 |
|
831 |
Object e2 = q.lower(m6); |
832 |
assertEquals(m5, e2); |
833 |
|
834 |
Object e3 = q.lower(m1); |
835 |
assertNull(e3); |
836 |
|
837 |
Object e4 = q.lower(zero); |
838 |
assertNull(e4); |
839 |
} |
840 |
|
841 |
/** |
842 |
* higher returns next element |
843 |
*/ |
844 |
public void testDescendingHigher() { |
845 |
NavigableSet q = dset5(); |
846 |
Object e1 = q.higher(m3); |
847 |
assertEquals(m4, e1); |
848 |
|
849 |
Object e2 = q.higher(zero); |
850 |
assertEquals(m1, e2); |
851 |
|
852 |
Object e3 = q.higher(m5); |
853 |
assertNull(e3); |
854 |
|
855 |
Object e4 = q.higher(m6); |
856 |
assertNull(e4); |
857 |
} |
858 |
|
859 |
/** |
860 |
* floor returns preceding element |
861 |
*/ |
862 |
public void testDescendingFloor() { |
863 |
NavigableSet q = dset5(); |
864 |
Object e1 = q.floor(m3); |
865 |
assertEquals(m3, e1); |
866 |
|
867 |
Object e2 = q.floor(m6); |
868 |
assertEquals(m5, e2); |
869 |
|
870 |
Object e3 = q.floor(m1); |
871 |
assertEquals(m1, e3); |
872 |
|
873 |
Object e4 = q.floor(zero); |
874 |
assertNull(e4); |
875 |
} |
876 |
|
877 |
/** |
878 |
* ceiling returns next element |
879 |
*/ |
880 |
public void testDescendingCeiling() { |
881 |
NavigableSet q = dset5(); |
882 |
Object e1 = q.ceiling(m3); |
883 |
assertEquals(m3, e1); |
884 |
|
885 |
Object e2 = q.ceiling(zero); |
886 |
assertEquals(m1, e2); |
887 |
|
888 |
Object e3 = q.ceiling(m5); |
889 |
assertEquals(m5, e3); |
890 |
|
891 |
Object e4 = q.ceiling(m6); |
892 |
assertNull(e4); |
893 |
} |
894 |
|
895 |
/** |
896 |
* toArray contains all elements |
897 |
*/ |
898 |
public void testDescendingToArray() { |
899 |
NavigableSet q = populatedSet(SIZE); |
900 |
Object[] o = q.toArray(); |
901 |
Arrays.sort(o); |
902 |
for (int i = 0; i < o.length; i++) |
903 |
assertEquals(o[i], q.pollFirst()); |
904 |
} |
905 |
|
906 |
/** |
907 |
* toArray(a) contains all elements |
908 |
*/ |
909 |
public void testDescendingToArray2() { |
910 |
NavigableSet q = populatedSet(SIZE); |
911 |
Integer[] ints = new Integer[SIZE]; |
912 |
assertSame(ints, q.toArray(ints)); |
913 |
Arrays.sort(ints); |
914 |
for (int i = 0; i < ints.length; i++) |
915 |
assertEquals(ints[i], q.pollFirst()); |
916 |
} |
917 |
|
918 |
/** |
919 |
* iterator iterates through all elements |
920 |
*/ |
921 |
public void testDescendingIterator() { |
922 |
NavigableSet q = populatedSet(SIZE); |
923 |
int i = 0; |
924 |
Iterator it = q.iterator(); |
925 |
while (it.hasNext()) { |
926 |
assertTrue(q.contains(it.next())); |
927 |
++i; |
928 |
} |
929 |
assertEquals(i, SIZE); |
930 |
} |
931 |
|
932 |
/** |
933 |
* iterator of empty set has no elements |
934 |
*/ |
935 |
public void testDescendingEmptyIterator() { |
936 |
NavigableSet q = dset0(); |
937 |
int i = 0; |
938 |
Iterator it = q.iterator(); |
939 |
while (it.hasNext()) { |
940 |
assertTrue(q.contains(it.next())); |
941 |
++i; |
942 |
} |
943 |
assertEquals(0, i); |
944 |
} |
945 |
|
946 |
/** |
947 |
* iterator.remove removes current element |
948 |
*/ |
949 |
public void testDescendingIteratorRemove() { |
950 |
final NavigableSet q = dset0(); |
951 |
q.add(new Integer(2)); |
952 |
q.add(new Integer(1)); |
953 |
q.add(new Integer(3)); |
954 |
|
955 |
Iterator it = q.iterator(); |
956 |
it.next(); |
957 |
it.remove(); |
958 |
|
959 |
it = q.iterator(); |
960 |
assertEquals(it.next(), new Integer(2)); |
961 |
assertEquals(it.next(), new Integer(3)); |
962 |
assertFalse(it.hasNext()); |
963 |
} |
964 |
|
965 |
/** |
966 |
* toString contains toStrings of elements |
967 |
*/ |
968 |
public void testDescendingToString() { |
969 |
NavigableSet q = populatedSet(SIZE); |
970 |
String s = q.toString(); |
971 |
for (int i = 0; i < SIZE; ++i) { |
972 |
assertTrue(s.contains(String.valueOf(i))); |
973 |
} |
974 |
} |
975 |
|
976 |
/** |
977 |
* A deserialized/reserialized set equals original |
978 |
*/ |
979 |
public void testDescendingSerialization() throws Exception { |
980 |
NavigableSet x = dset5(); |
981 |
NavigableSet y = serialClone(x); |
982 |
|
983 |
assertNotSame(y, x); |
984 |
assertEquals(x.size(), y.size()); |
985 |
assertEquals(x, y); |
986 |
assertEquals(y, x); |
987 |
while (!x.isEmpty()) { |
988 |
assertFalse(y.isEmpty()); |
989 |
assertEquals(x.pollFirst(), y.pollFirst()); |
990 |
} |
991 |
assertTrue(y.isEmpty()); |
992 |
} |
993 |
|
994 |
/** |
995 |
* subSet returns set with keys in requested range |
996 |
*/ |
997 |
public void testDescendingSubSetContents() { |
998 |
NavigableSet set = dset5(); |
999 |
SortedSet sm = set.subSet(m2, m4); |
1000 |
assertEquals(m2, sm.first()); |
1001 |
assertEquals(m3, sm.last()); |
1002 |
assertEquals(2, sm.size()); |
1003 |
assertFalse(sm.contains(m1)); |
1004 |
assertTrue(sm.contains(m2)); |
1005 |
assertTrue(sm.contains(m3)); |
1006 |
assertFalse(sm.contains(m4)); |
1007 |
assertFalse(sm.contains(m5)); |
1008 |
Iterator i = sm.iterator(); |
1009 |
Object k; |
1010 |
k = (Integer)(i.next()); |
1011 |
assertEquals(m2, k); |
1012 |
k = (Integer)(i.next()); |
1013 |
assertEquals(m3, k); |
1014 |
assertFalse(i.hasNext()); |
1015 |
Iterator j = sm.iterator(); |
1016 |
j.next(); |
1017 |
j.remove(); |
1018 |
assertFalse(set.contains(m2)); |
1019 |
assertEquals(4, set.size()); |
1020 |
assertEquals(1, sm.size()); |
1021 |
assertEquals(m3, sm.first()); |
1022 |
assertEquals(m3, sm.last()); |
1023 |
assertTrue(sm.remove(m3)); |
1024 |
assertTrue(sm.isEmpty()); |
1025 |
assertEquals(3, set.size()); |
1026 |
} |
1027 |
|
1028 |
public void testDescendingSubSetContents2() { |
1029 |
NavigableSet set = dset5(); |
1030 |
SortedSet sm = set.subSet(m2, m3); |
1031 |
assertEquals(1, sm.size()); |
1032 |
assertEquals(m2, sm.first()); |
1033 |
assertEquals(m2, sm.last()); |
1034 |
assertFalse(sm.contains(m1)); |
1035 |
assertTrue(sm.contains(m2)); |
1036 |
assertFalse(sm.contains(m3)); |
1037 |
assertFalse(sm.contains(m4)); |
1038 |
assertFalse(sm.contains(m5)); |
1039 |
Iterator i = sm.iterator(); |
1040 |
Object k; |
1041 |
k = (Integer)(i.next()); |
1042 |
assertEquals(m2, k); |
1043 |
assertFalse(i.hasNext()); |
1044 |
Iterator j = sm.iterator(); |
1045 |
j.next(); |
1046 |
j.remove(); |
1047 |
assertFalse(set.contains(m2)); |
1048 |
assertEquals(4, set.size()); |
1049 |
assertEquals(0, sm.size()); |
1050 |
assertTrue(sm.isEmpty()); |
1051 |
assertFalse(sm.remove(m3)); |
1052 |
assertEquals(4, set.size()); |
1053 |
} |
1054 |
|
1055 |
/** |
1056 |
* headSet returns set with keys in requested range |
1057 |
*/ |
1058 |
public void testDescendingHeadSetContents() { |
1059 |
NavigableSet set = dset5(); |
1060 |
SortedSet sm = set.headSet(m4); |
1061 |
assertTrue(sm.contains(m1)); |
1062 |
assertTrue(sm.contains(m2)); |
1063 |
assertTrue(sm.contains(m3)); |
1064 |
assertFalse(sm.contains(m4)); |
1065 |
assertFalse(sm.contains(m5)); |
1066 |
Iterator i = sm.iterator(); |
1067 |
Object k; |
1068 |
k = (Integer)(i.next()); |
1069 |
assertEquals(m1, k); |
1070 |
k = (Integer)(i.next()); |
1071 |
assertEquals(m2, k); |
1072 |
k = (Integer)(i.next()); |
1073 |
assertEquals(m3, k); |
1074 |
assertFalse(i.hasNext()); |
1075 |
sm.clear(); |
1076 |
assertTrue(sm.isEmpty()); |
1077 |
assertEquals(2, set.size()); |
1078 |
assertEquals(m4, set.first()); |
1079 |
} |
1080 |
|
1081 |
/** |
1082 |
* tailSet returns set with keys in requested range |
1083 |
*/ |
1084 |
public void testDescendingTailSetContents() { |
1085 |
NavigableSet set = dset5(); |
1086 |
SortedSet sm = set.tailSet(m2); |
1087 |
assertFalse(sm.contains(m1)); |
1088 |
assertTrue(sm.contains(m2)); |
1089 |
assertTrue(sm.contains(m3)); |
1090 |
assertTrue(sm.contains(m4)); |
1091 |
assertTrue(sm.contains(m5)); |
1092 |
Iterator i = sm.iterator(); |
1093 |
Object k; |
1094 |
k = (Integer)(i.next()); |
1095 |
assertEquals(m2, k); |
1096 |
k = (Integer)(i.next()); |
1097 |
assertEquals(m3, k); |
1098 |
k = (Integer)(i.next()); |
1099 |
assertEquals(m4, k); |
1100 |
k = (Integer)(i.next()); |
1101 |
assertEquals(m5, k); |
1102 |
assertFalse(i.hasNext()); |
1103 |
|
1104 |
SortedSet ssm = sm.tailSet(m4); |
1105 |
assertEquals(m4, ssm.first()); |
1106 |
assertEquals(m5, ssm.last()); |
1107 |
assertTrue(ssm.remove(m4)); |
1108 |
assertEquals(1, ssm.size()); |
1109 |
assertEquals(3, sm.size()); |
1110 |
assertEquals(4, set.size()); |
1111 |
} |
1112 |
|
1113 |
} |