| 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 |
| 5 |
*/ |
| 6 |
|
| 7 |
import junit.framework.*; |
| 8 |
import java.util.*; |
| 9 |
import java.util.concurrent.*; |
| 10 |
import java.io.*; |
| 11 |
|
| 12 |
public class ConcurrentSkipListSubSetTest extends JSR166TestCase { |
| 13 |
public static void main(String[] args) { |
| 14 |
junit.textui.TestRunner.run(suite()); |
| 15 |
} |
| 16 |
public static Test suite() { |
| 17 |
return new TestSuite(ConcurrentSkipListSubSetTest.class); |
| 18 |
} |
| 19 |
|
| 20 |
static class MyReverseComparator implements Comparator { |
| 21 |
public int compare(Object x, Object y) { |
| 22 |
return ((Comparable)y).compareTo(x); |
| 23 |
} |
| 24 |
} |
| 25 |
|
| 26 |
/** |
| 27 |
* Create a set of given size containing consecutive |
| 28 |
* Integers 0 ... n. |
| 29 |
*/ |
| 30 |
private NavigableSet populatedSet(int n) { |
| 31 |
ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
| 32 |
assertTrue(q.isEmpty()); |
| 33 |
|
| 34 |
for (int i = n-1; i >= 0; i-=2) |
| 35 |
assertTrue(q.add(new Integer(i))); |
| 36 |
for (int i = (n & 1); i < n; i+=2) |
| 37 |
assertTrue(q.add(new Integer(i))); |
| 38 |
assertTrue(q.add(new Integer(-n))); |
| 39 |
assertTrue(q.add(new Integer(n))); |
| 40 |
NavigableSet s = q.subSet(new Integer(0), true, new Integer(n), false); |
| 41 |
assertFalse(s.isEmpty()); |
| 42 |
assertEquals(n, s.size()); |
| 43 |
return s; |
| 44 |
} |
| 45 |
|
| 46 |
/** |
| 47 |
* Create set of first 5 ints |
| 48 |
*/ |
| 49 |
private NavigableSet set5() { |
| 50 |
ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
| 51 |
assertTrue(q.isEmpty()); |
| 52 |
q.add(one); |
| 53 |
q.add(two); |
| 54 |
q.add(three); |
| 55 |
q.add(four); |
| 56 |
q.add(five); |
| 57 |
q.add(zero); |
| 58 |
q.add(seven); |
| 59 |
NavigableSet s = q.subSet(one, true, seven, false); |
| 60 |
assertEquals(5, s.size()); |
| 61 |
return s; |
| 62 |
} |
| 63 |
|
| 64 |
/** |
| 65 |
* Create set of first 5 negative ints |
| 66 |
*/ |
| 67 |
private NavigableSet dset5() { |
| 68 |
ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
| 69 |
assertTrue(q.isEmpty()); |
| 70 |
q.add(m1); |
| 71 |
q.add(m2); |
| 72 |
q.add(m3); |
| 73 |
q.add(m4); |
| 74 |
q.add(m5); |
| 75 |
NavigableSet s = q.descendingSet(); |
| 76 |
assertEquals(5, s.size()); |
| 77 |
return s; |
| 78 |
} |
| 79 |
|
| 80 |
private static NavigableSet set0() { |
| 81 |
ConcurrentSkipListSet set = new ConcurrentSkipListSet(); |
| 82 |
assertTrue(set.isEmpty()); |
| 83 |
return set.tailSet(m1, true); |
| 84 |
} |
| 85 |
|
| 86 |
private static NavigableSet dset0() { |
| 87 |
ConcurrentSkipListSet set = new ConcurrentSkipListSet(); |
| 88 |
assertTrue(set.isEmpty()); |
| 89 |
return set; |
| 90 |
} |
| 91 |
|
| 92 |
/** |
| 93 |
* A new set has unbounded capacity |
| 94 |
*/ |
| 95 |
public void testConstructor1() { |
| 96 |
assertEquals(0, set0().size()); |
| 97 |
} |
| 98 |
|
| 99 |
|
| 100 |
/** |
| 101 |
* isEmpty is true before add, false after |
| 102 |
*/ |
| 103 |
public void testEmpty() { |
| 104 |
NavigableSet q = set0(); |
| 105 |
assertTrue(q.isEmpty()); |
| 106 |
q.add(new Integer(1)); |
| 107 |
assertFalse(q.isEmpty()); |
| 108 |
q.add(new Integer(2)); |
| 109 |
q.pollFirst(); |
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q.pollFirst(); |
| 111 |
assertTrue(q.isEmpty()); |
| 112 |
} |
| 113 |
|
| 114 |
/** |
| 115 |
* size changes when elements added and removed |
| 116 |
*/ |
| 117 |
public void testSize() { |
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NavigableSet q = populatedSet(SIZE); |
| 119 |
for (int i = 0; i < SIZE; ++i) { |
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assertEquals(SIZE-i, q.size()); |
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q.pollFirst(); |
| 122 |
} |
| 123 |
for (int i = 0; i < SIZE; ++i) { |
| 124 |
assertEquals(i, q.size()); |
| 125 |
q.add(new Integer(i)); |
| 126 |
} |
| 127 |
} |
| 128 |
|
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/** |
| 130 |
* add(null) throws NPE |
| 131 |
*/ |
| 132 |
public void testAddNull() { |
| 133 |
try { |
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NavigableSet q = set0(); |
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q.add(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
| 138 |
} |
| 139 |
|
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/** |
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* Add of comparable element succeeds |
| 142 |
*/ |
| 143 |
public void testAdd() { |
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NavigableSet q = set0(); |
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assertTrue(q.add(six)); |
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} |
| 147 |
|
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/** |
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* Add of duplicate element fails |
| 150 |
*/ |
| 151 |
public void testAddDup() { |
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NavigableSet q = set0(); |
| 153 |
assertTrue(q.add(six)); |
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assertFalse(q.add(six)); |
| 155 |
} |
| 156 |
|
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/** |
| 158 |
* Add of non-Comparable throws CCE |
| 159 |
*/ |
| 160 |
public void testAddNonComparable() { |
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try { |
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NavigableSet q = set0(); |
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q.add(new Object()); |
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q.add(new Object()); |
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q.add(new Object()); |
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shouldThrow(); |
| 167 |
} catch (ClassCastException success) {} |
| 168 |
} |
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|
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|
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/** |
| 172 |
* addAll(null) throws NPE |
| 173 |
*/ |
| 174 |
public void testAddAll1() { |
| 175 |
try { |
| 176 |
NavigableSet q = set0(); |
| 177 |
q.addAll(null); |
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shouldThrow(); |
| 179 |
} catch (NullPointerException success) {} |
| 180 |
} |
| 181 |
/** |
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* addAll of a collection with null elements throws NPE |
| 183 |
*/ |
| 184 |
public void testAddAll2() { |
| 185 |
try { |
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NavigableSet q = set0(); |
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Integer[] ints = new Integer[SIZE]; |
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q.addAll(Arrays.asList(ints)); |
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shouldThrow(); |
| 190 |
} catch (NullPointerException success) {} |
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} |
| 192 |
/** |
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* addAll of a collection with any null elements throws NPE after |
| 194 |
* possibly adding some elements |
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*/ |
| 196 |
public void testAddAll3() { |
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try { |
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NavigableSet q = set0(); |
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Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE-1; ++i) |
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ints[i] = new Integer(i+SIZE); |
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q.addAll(Arrays.asList(ints)); |
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shouldThrow(); |
| 204 |
} catch (NullPointerException success) {} |
| 205 |
} |
| 206 |
|
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/** |
| 208 |
* Set contains all elements of successful addAll |
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*/ |
| 210 |
public void testAddAll5() { |
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Integer[] empty = new Integer[0]; |
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Integer[] ints = new Integer[SIZE]; |
| 213 |
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(); |
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assertFalse(q.addAll(Arrays.asList(empty))); |
| 217 |
assertTrue(q.addAll(Arrays.asList(ints))); |
| 218 |
for (int i = 0; i < SIZE; ++i) |
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assertEquals(new Integer(i), q.pollFirst()); |
| 220 |
} |
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|
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/** |
| 223 |
* poll succeeds unless empty |
| 224 |
*/ |
| 225 |
public void testPoll() { |
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NavigableSet q = populatedSet(SIZE); |
| 227 |
for (int i = 0; i < SIZE; ++i) { |
| 228 |
assertEquals(i, q.pollFirst()); |
| 229 |
} |
| 230 |
assertNull(q.pollFirst()); |
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} |
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|
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/** |
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* remove(x) removes x and returns true if present |
| 235 |
*/ |
| 236 |
public void testRemoveElement() { |
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NavigableSet q = populatedSet(SIZE); |
| 238 |
for (int i = 1; i < SIZE; i+=2) { |
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assertTrue(q.remove(new Integer(i))); |
| 240 |
} |
| 241 |
for (int i = 0; i < SIZE; i+=2) { |
| 242 |
assertTrue(q.remove(new Integer(i))); |
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assertFalse(q.remove(new Integer(i+1))); |
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} |
| 245 |
assertTrue(q.isEmpty()); |
| 246 |
} |
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|
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/** |
| 249 |
* contains(x) reports true when elements added but not yet removed |
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*/ |
| 251 |
public void testContains() { |
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NavigableSet q = populatedSet(SIZE); |
| 253 |
for (int i = 0; i < SIZE; ++i) { |
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assertTrue(q.contains(new Integer(i))); |
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q.pollFirst(); |
| 256 |
assertFalse(q.contains(new Integer(i))); |
| 257 |
} |
| 258 |
} |
| 259 |
|
| 260 |
/** |
| 261 |
* clear removes all elements |
| 262 |
*/ |
| 263 |
public void testClear() { |
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NavigableSet q = populatedSet(SIZE); |
| 265 |
q.clear(); |
| 266 |
assertTrue(q.isEmpty()); |
| 267 |
assertEquals(0, q.size()); |
| 268 |
q.add(new Integer(1)); |
| 269 |
assertFalse(q.isEmpty()); |
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q.clear(); |
| 271 |
assertTrue(q.isEmpty()); |
| 272 |
} |
| 273 |
|
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/** |
| 275 |
* containsAll(c) is true when c contains a subset of elements |
| 276 |
*/ |
| 277 |
public void testContainsAll() { |
| 278 |
NavigableSet q = populatedSet(SIZE); |
| 279 |
NavigableSet p = set0(); |
| 280 |
for (int i = 0; i < SIZE; ++i) { |
| 281 |
assertTrue(q.containsAll(p)); |
| 282 |
assertFalse(p.containsAll(q)); |
| 283 |
p.add(new Integer(i)); |
| 284 |
} |
| 285 |
assertTrue(p.containsAll(q)); |
| 286 |
} |
| 287 |
|
| 288 |
/** |
| 289 |
* retainAll(c) retains only those elements of c and reports true if changed |
| 290 |
*/ |
| 291 |
public void testRetainAll() { |
| 292 |
NavigableSet q = populatedSet(SIZE); |
| 293 |
NavigableSet p = populatedSet(SIZE); |
| 294 |
for (int i = 0; i < SIZE; ++i) { |
| 295 |
boolean changed = q.retainAll(p); |
| 296 |
if (i == 0) |
| 297 |
assertFalse(changed); |
| 298 |
else |
| 299 |
assertTrue(changed); |
| 300 |
|
| 301 |
assertTrue(q.containsAll(p)); |
| 302 |
assertEquals(SIZE-i, q.size()); |
| 303 |
p.pollFirst(); |
| 304 |
} |
| 305 |
} |
| 306 |
|
| 307 |
/** |
| 308 |
* removeAll(c) removes only those elements of c and reports true if changed |
| 309 |
*/ |
| 310 |
public void testRemoveAll() { |
| 311 |
for (int i = 1; i < SIZE; ++i) { |
| 312 |
NavigableSet q = populatedSet(SIZE); |
| 313 |
NavigableSet p = populatedSet(i); |
| 314 |
assertTrue(q.removeAll(p)); |
| 315 |
assertEquals(SIZE-i, q.size()); |
| 316 |
for (int j = 0; j < i; ++j) { |
| 317 |
Integer I = (Integer)(p.pollFirst()); |
| 318 |
assertFalse(q.contains(I)); |
| 319 |
} |
| 320 |
} |
| 321 |
} |
| 322 |
|
| 323 |
|
| 324 |
|
| 325 |
/** |
| 326 |
* lower returns preceding element |
| 327 |
*/ |
| 328 |
public void testLower() { |
| 329 |
NavigableSet q = set5(); |
| 330 |
Object e1 = q.lower(three); |
| 331 |
assertEquals(two, e1); |
| 332 |
|
| 333 |
Object e2 = q.lower(six); |
| 334 |
assertEquals(five, e2); |
| 335 |
|
| 336 |
Object e3 = q.lower(one); |
| 337 |
assertNull(e3); |
| 338 |
|
| 339 |
Object e4 = q.lower(zero); |
| 340 |
assertNull(e4); |
| 341 |
} |
| 342 |
|
| 343 |
/** |
| 344 |
* higher returns next element |
| 345 |
*/ |
| 346 |
public void testHigher() { |
| 347 |
NavigableSet q = set5(); |
| 348 |
Object e1 = q.higher(three); |
| 349 |
assertEquals(four, e1); |
| 350 |
|
| 351 |
Object e2 = q.higher(zero); |
| 352 |
assertEquals(one, e2); |
| 353 |
|
| 354 |
Object e3 = q.higher(five); |
| 355 |
assertNull(e3); |
| 356 |
|
| 357 |
Object e4 = q.higher(six); |
| 358 |
assertNull(e4); |
| 359 |
} |
| 360 |
|
| 361 |
/** |
| 362 |
* floor returns preceding element |
| 363 |
*/ |
| 364 |
public void testFloor() { |
| 365 |
NavigableSet q = set5(); |
| 366 |
Object e1 = q.floor(three); |
| 367 |
assertEquals(three, e1); |
| 368 |
|
| 369 |
Object e2 = q.floor(six); |
| 370 |
assertEquals(five, e2); |
| 371 |
|
| 372 |
Object e3 = q.floor(one); |
| 373 |
assertEquals(one, e3); |
| 374 |
|
| 375 |
Object e4 = q.floor(zero); |
| 376 |
assertNull(e4); |
| 377 |
} |
| 378 |
|
| 379 |
/** |
| 380 |
* ceiling returns next element |
| 381 |
*/ |
| 382 |
public void testCeiling() { |
| 383 |
NavigableSet q = set5(); |
| 384 |
Object e1 = q.ceiling(three); |
| 385 |
assertEquals(three, e1); |
| 386 |
|
| 387 |
Object e2 = q.ceiling(zero); |
| 388 |
assertEquals(one, e2); |
| 389 |
|
| 390 |
Object e3 = q.ceiling(five); |
| 391 |
assertEquals(five, e3); |
| 392 |
|
| 393 |
Object e4 = q.ceiling(six); |
| 394 |
assertNull(e4); |
| 395 |
} |
| 396 |
|
| 397 |
/** |
| 398 |
* toArray contains all elements |
| 399 |
*/ |
| 400 |
public void testToArray() { |
| 401 |
NavigableSet q = populatedSet(SIZE); |
| 402 |
Object[] o = q.toArray(); |
| 403 |
Arrays.sort(o); |
| 404 |
for (int i = 0; i < o.length; i++) |
| 405 |
assertEquals(o[i], q.pollFirst()); |
| 406 |
} |
| 407 |
|
| 408 |
/** |
| 409 |
* toArray(a) contains all elements |
| 410 |
*/ |
| 411 |
public void testToArray2() { |
| 412 |
NavigableSet q = populatedSet(SIZE); |
| 413 |
Integer[] ints = new Integer[SIZE]; |
| 414 |
ints = (Integer[])q.toArray(ints); |
| 415 |
Arrays.sort(ints); |
| 416 |
for (int i = 0; i < ints.length; i++) |
| 417 |
assertEquals(ints[i], q.pollFirst()); |
| 418 |
} |
| 419 |
|
| 420 |
/** |
| 421 |
* iterator iterates through all elements |
| 422 |
*/ |
| 423 |
public void testIterator() { |
| 424 |
NavigableSet q = populatedSet(SIZE); |
| 425 |
int i = 0; |
| 426 |
Iterator it = q.iterator(); |
| 427 |
while (it.hasNext()) { |
| 428 |
assertTrue(q.contains(it.next())); |
| 429 |
++i; |
| 430 |
} |
| 431 |
assertEquals(i, SIZE); |
| 432 |
} |
| 433 |
|
| 434 |
/** |
| 435 |
* iterator of empty set has no elements |
| 436 |
*/ |
| 437 |
public void testEmptyIterator() { |
| 438 |
NavigableSet q = set0(); |
| 439 |
int i = 0; |
| 440 |
Iterator it = q.iterator(); |
| 441 |
while (it.hasNext()) { |
| 442 |
assertTrue(q.contains(it.next())); |
| 443 |
++i; |
| 444 |
} |
| 445 |
assertEquals(i, 0); |
| 446 |
} |
| 447 |
|
| 448 |
/** |
| 449 |
* iterator.remove removes current element |
| 450 |
*/ |
| 451 |
public void testIteratorRemove() { |
| 452 |
final NavigableSet q = set0(); |
| 453 |
q.add(new Integer(2)); |
| 454 |
q.add(new Integer(1)); |
| 455 |
q.add(new Integer(3)); |
| 456 |
|
| 457 |
Iterator it = q.iterator(); |
| 458 |
it.next(); |
| 459 |
it.remove(); |
| 460 |
|
| 461 |
it = q.iterator(); |
| 462 |
assertEquals(it.next(), new Integer(2)); |
| 463 |
assertEquals(it.next(), new Integer(3)); |
| 464 |
assertFalse(it.hasNext()); |
| 465 |
} |
| 466 |
|
| 467 |
|
| 468 |
/** |
| 469 |
* toString contains toStrings of elements |
| 470 |
*/ |
| 471 |
public void testToString() { |
| 472 |
NavigableSet q = populatedSet(SIZE); |
| 473 |
String s = q.toString(); |
| 474 |
for (int i = 0; i < SIZE; ++i) { |
| 475 |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
| 476 |
} |
| 477 |
} |
| 478 |
|
| 479 |
/** |
| 480 |
* A deserialized serialized set has same elements |
| 481 |
*/ |
| 482 |
public void testSerialization() throws Exception { |
| 483 |
NavigableSet q = populatedSet(SIZE); |
| 484 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
| 485 |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
| 486 |
out.writeObject(q); |
| 487 |
out.close(); |
| 488 |
|
| 489 |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
| 490 |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
| 491 |
NavigableSet r = (NavigableSet)in.readObject(); |
| 492 |
assertEquals(q.size(), r.size()); |
| 493 |
while (!q.isEmpty()) |
| 494 |
assertEquals(q.pollFirst(), r.pollFirst()); |
| 495 |
} |
| 496 |
|
| 497 |
/** |
| 498 |
* subSet returns set with keys in requested range |
| 499 |
*/ |
| 500 |
public void testSubSetContents() { |
| 501 |
NavigableSet set = set5(); |
| 502 |
SortedSet sm = set.subSet(two, four); |
| 503 |
assertEquals(two, sm.first()); |
| 504 |
assertEquals(three, sm.last()); |
| 505 |
assertEquals(2, sm.size()); |
| 506 |
assertFalse(sm.contains(one)); |
| 507 |
assertTrue(sm.contains(two)); |
| 508 |
assertTrue(sm.contains(three)); |
| 509 |
assertFalse(sm.contains(four)); |
| 510 |
assertFalse(sm.contains(five)); |
| 511 |
Iterator i = sm.iterator(); |
| 512 |
Object k; |
| 513 |
k = (Integer)(i.next()); |
| 514 |
assertEquals(two, k); |
| 515 |
k = (Integer)(i.next()); |
| 516 |
assertEquals(three, k); |
| 517 |
assertFalse(i.hasNext()); |
| 518 |
Iterator j = sm.iterator(); |
| 519 |
j.next(); |
| 520 |
j.remove(); |
| 521 |
assertFalse(set.contains(two)); |
| 522 |
assertEquals(4, set.size()); |
| 523 |
assertEquals(1, sm.size()); |
| 524 |
assertEquals(three, sm.first()); |
| 525 |
assertEquals(three, sm.last()); |
| 526 |
assertTrue(sm.remove(three)); |
| 527 |
assertTrue(sm.isEmpty()); |
| 528 |
assertEquals(3, set.size()); |
| 529 |
} |
| 530 |
|
| 531 |
public void testSubSetContents2() { |
| 532 |
NavigableSet set = set5(); |
| 533 |
SortedSet sm = set.subSet(two, three); |
| 534 |
assertEquals(1, sm.size()); |
| 535 |
assertEquals(two, sm.first()); |
| 536 |
assertEquals(two, sm.last()); |
| 537 |
assertFalse(sm.contains(one)); |
| 538 |
assertTrue(sm.contains(two)); |
| 539 |
assertFalse(sm.contains(three)); |
| 540 |
assertFalse(sm.contains(four)); |
| 541 |
assertFalse(sm.contains(five)); |
| 542 |
Iterator i = sm.iterator(); |
| 543 |
Object k; |
| 544 |
k = (Integer)(i.next()); |
| 545 |
assertEquals(two, k); |
| 546 |
assertFalse(i.hasNext()); |
| 547 |
Iterator j = sm.iterator(); |
| 548 |
j.next(); |
| 549 |
j.remove(); |
| 550 |
assertFalse(set.contains(two)); |
| 551 |
assertEquals(4, set.size()); |
| 552 |
assertEquals(0, sm.size()); |
| 553 |
assertTrue(sm.isEmpty()); |
| 554 |
assertFalse(sm.remove(three)); |
| 555 |
assertEquals(4, set.size()); |
| 556 |
} |
| 557 |
|
| 558 |
/** |
| 559 |
* headSet returns set with keys in requested range |
| 560 |
*/ |
| 561 |
public void testHeadSetContents() { |
| 562 |
NavigableSet set = set5(); |
| 563 |
SortedSet sm = set.headSet(four); |
| 564 |
assertTrue(sm.contains(one)); |
| 565 |
assertTrue(sm.contains(two)); |
| 566 |
assertTrue(sm.contains(three)); |
| 567 |
assertFalse(sm.contains(four)); |
| 568 |
assertFalse(sm.contains(five)); |
| 569 |
Iterator i = sm.iterator(); |
| 570 |
Object k; |
| 571 |
k = (Integer)(i.next()); |
| 572 |
assertEquals(one, k); |
| 573 |
k = (Integer)(i.next()); |
| 574 |
assertEquals(two, k); |
| 575 |
k = (Integer)(i.next()); |
| 576 |
assertEquals(three, k); |
| 577 |
assertFalse(i.hasNext()); |
| 578 |
sm.clear(); |
| 579 |
assertTrue(sm.isEmpty()); |
| 580 |
assertEquals(2, set.size()); |
| 581 |
assertEquals(four, set.first()); |
| 582 |
} |
| 583 |
|
| 584 |
/** |
| 585 |
* tailSet returns set with keys in requested range |
| 586 |
*/ |
| 587 |
public void testTailSetContents() { |
| 588 |
NavigableSet set = set5(); |
| 589 |
SortedSet sm = set.tailSet(two); |
| 590 |
assertFalse(sm.contains(one)); |
| 591 |
assertTrue(sm.contains(two)); |
| 592 |
assertTrue(sm.contains(three)); |
| 593 |
assertTrue(sm.contains(four)); |
| 594 |
assertTrue(sm.contains(five)); |
| 595 |
Iterator i = sm.iterator(); |
| 596 |
Object k; |
| 597 |
k = (Integer)(i.next()); |
| 598 |
assertEquals(two, k); |
| 599 |
k = (Integer)(i.next()); |
| 600 |
assertEquals(three, k); |
| 601 |
k = (Integer)(i.next()); |
| 602 |
assertEquals(four, k); |
| 603 |
k = (Integer)(i.next()); |
| 604 |
assertEquals(five, k); |
| 605 |
assertFalse(i.hasNext()); |
| 606 |
|
| 607 |
SortedSet ssm = sm.tailSet(four); |
| 608 |
assertEquals(four, ssm.first()); |
| 609 |
assertEquals(five, ssm.last()); |
| 610 |
assertTrue(ssm.remove(four)); |
| 611 |
assertEquals(1, ssm.size()); |
| 612 |
assertEquals(3, sm.size()); |
| 613 |
assertEquals(4, set.size()); |
| 614 |
} |
| 615 |
|
| 616 |
/** |
| 617 |
* size changes when elements added and removed |
| 618 |
*/ |
| 619 |
public void testDescendingSize() { |
| 620 |
NavigableSet q = populatedSet(SIZE); |
| 621 |
for (int i = 0; i < SIZE; ++i) { |
| 622 |
assertEquals(SIZE-i, q.size()); |
| 623 |
q.pollFirst(); |
| 624 |
} |
| 625 |
for (int i = 0; i < SIZE; ++i) { |
| 626 |
assertEquals(i, q.size()); |
| 627 |
q.add(new Integer(i)); |
| 628 |
} |
| 629 |
} |
| 630 |
|
| 631 |
/** |
| 632 |
* add(null) throws NPE |
| 633 |
*/ |
| 634 |
public void testDescendingAddNull() { |
| 635 |
try { |
| 636 |
NavigableSet q = dset0(); |
| 637 |
q.add(null); |
| 638 |
shouldThrow(); |
| 639 |
} catch (NullPointerException success) {} |
| 640 |
} |
| 641 |
|
| 642 |
/** |
| 643 |
* Add of comparable element succeeds |
| 644 |
*/ |
| 645 |
public void testDescendingAdd() { |
| 646 |
NavigableSet q = dset0(); |
| 647 |
assertTrue(q.add(m6)); |
| 648 |
} |
| 649 |
|
| 650 |
/** |
| 651 |
* Add of duplicate element fails |
| 652 |
*/ |
| 653 |
public void testDescendingAddDup() { |
| 654 |
NavigableSet q = dset0(); |
| 655 |
assertTrue(q.add(m6)); |
| 656 |
assertFalse(q.add(m6)); |
| 657 |
} |
| 658 |
|
| 659 |
/** |
| 660 |
* Add of non-Comparable throws CCE |
| 661 |
*/ |
| 662 |
public void testDescendingAddNonComparable() { |
| 663 |
try { |
| 664 |
NavigableSet q = dset0(); |
| 665 |
q.add(new Object()); |
| 666 |
q.add(new Object()); |
| 667 |
q.add(new Object()); |
| 668 |
shouldThrow(); |
| 669 |
} catch (ClassCastException success) {} |
| 670 |
} |
| 671 |
|
| 672 |
|
| 673 |
/** |
| 674 |
* addAll(null) throws NPE |
| 675 |
*/ |
| 676 |
public void testDescendingAddAll1() { |
| 677 |
try { |
| 678 |
NavigableSet q = dset0(); |
| 679 |
q.addAll(null); |
| 680 |
shouldThrow(); |
| 681 |
} catch (NullPointerException success) {} |
| 682 |
} |
| 683 |
/** |
| 684 |
* addAll of a collection with null elements throws NPE |
| 685 |
*/ |
| 686 |
public void testDescendingAddAll2() { |
| 687 |
try { |
| 688 |
NavigableSet q = dset0(); |
| 689 |
Integer[] ints = new Integer[SIZE]; |
| 690 |
q.addAll(Arrays.asList(ints)); |
| 691 |
shouldThrow(); |
| 692 |
} catch (NullPointerException success) {} |
| 693 |
} |
| 694 |
/** |
| 695 |
* addAll of a collection with any null elements throws NPE after |
| 696 |
* possibly adding some elements |
| 697 |
*/ |
| 698 |
public void testDescendingAddAll3() { |
| 699 |
try { |
| 700 |
NavigableSet q = dset0(); |
| 701 |
Integer[] ints = new Integer[SIZE]; |
| 702 |
for (int i = 0; i < SIZE-1; ++i) |
| 703 |
ints[i] = new Integer(i+SIZE); |
| 704 |
q.addAll(Arrays.asList(ints)); |
| 705 |
shouldThrow(); |
| 706 |
} catch (NullPointerException success) {} |
| 707 |
} |
| 708 |
|
| 709 |
/** |
| 710 |
* Set contains all elements of successful addAll |
| 711 |
*/ |
| 712 |
public void testDescendingAddAll5() { |
| 713 |
Integer[] empty = new Integer[0]; |
| 714 |
Integer[] ints = new Integer[SIZE]; |
| 715 |
for (int i = 0; i < SIZE; ++i) |
| 716 |
ints[i] = new Integer(SIZE-1- i); |
| 717 |
NavigableSet q = dset0(); |
| 718 |
assertFalse(q.addAll(Arrays.asList(empty))); |
| 719 |
assertTrue(q.addAll(Arrays.asList(ints))); |
| 720 |
for (int i = 0; i < SIZE; ++i) |
| 721 |
assertEquals(new Integer(i), q.pollFirst()); |
| 722 |
} |
| 723 |
|
| 724 |
/** |
| 725 |
* poll succeeds unless empty |
| 726 |
*/ |
| 727 |
public void testDescendingPoll() { |
| 728 |
NavigableSet q = populatedSet(SIZE); |
| 729 |
for (int i = 0; i < SIZE; ++i) { |
| 730 |
assertEquals(i, q.pollFirst()); |
| 731 |
} |
| 732 |
assertNull(q.pollFirst()); |
| 733 |
} |
| 734 |
|
| 735 |
/** |
| 736 |
* remove(x) removes x and returns true if present |
| 737 |
*/ |
| 738 |
public void testDescendingRemoveElement() { |
| 739 |
NavigableSet q = populatedSet(SIZE); |
| 740 |
for (int i = 1; i < SIZE; i+=2) { |
| 741 |
assertTrue(q.remove(new Integer(i))); |
| 742 |
} |
| 743 |
for (int i = 0; i < SIZE; i+=2) { |
| 744 |
assertTrue(q.remove(new Integer(i))); |
| 745 |
assertFalse(q.remove(new Integer(i+1))); |
| 746 |
} |
| 747 |
assertTrue(q.isEmpty()); |
| 748 |
} |
| 749 |
|
| 750 |
/** |
| 751 |
* contains(x) reports true when elements added but not yet removed |
| 752 |
*/ |
| 753 |
public void testDescendingContains() { |
| 754 |
NavigableSet q = populatedSet(SIZE); |
| 755 |
for (int i = 0; i < SIZE; ++i) { |
| 756 |
assertTrue(q.contains(new Integer(i))); |
| 757 |
q.pollFirst(); |
| 758 |
assertFalse(q.contains(new Integer(i))); |
| 759 |
} |
| 760 |
} |
| 761 |
|
| 762 |
/** |
| 763 |
* clear removes all elements |
| 764 |
*/ |
| 765 |
public void testDescendingClear() { |
| 766 |
NavigableSet q = populatedSet(SIZE); |
| 767 |
q.clear(); |
| 768 |
assertTrue(q.isEmpty()); |
| 769 |
assertEquals(0, q.size()); |
| 770 |
q.add(new Integer(1)); |
| 771 |
assertFalse(q.isEmpty()); |
| 772 |
q.clear(); |
| 773 |
assertTrue(q.isEmpty()); |
| 774 |
} |
| 775 |
|
| 776 |
/** |
| 777 |
* containsAll(c) is true when c contains a subset of elements |
| 778 |
*/ |
| 779 |
public void testDescendingContainsAll() { |
| 780 |
NavigableSet q = populatedSet(SIZE); |
| 781 |
NavigableSet p = dset0(); |
| 782 |
for (int i = 0; i < SIZE; ++i) { |
| 783 |
assertTrue(q.containsAll(p)); |
| 784 |
assertFalse(p.containsAll(q)); |
| 785 |
p.add(new Integer(i)); |
| 786 |
} |
| 787 |
assertTrue(p.containsAll(q)); |
| 788 |
} |
| 789 |
|
| 790 |
/** |
| 791 |
* retainAll(c) retains only those elements of c and reports true if changed |
| 792 |
*/ |
| 793 |
public void testDescendingRetainAll() { |
| 794 |
NavigableSet q = populatedSet(SIZE); |
| 795 |
NavigableSet p = populatedSet(SIZE); |
| 796 |
for (int i = 0; i < SIZE; ++i) { |
| 797 |
boolean changed = q.retainAll(p); |
| 798 |
if (i == 0) |
| 799 |
assertFalse(changed); |
| 800 |
else |
| 801 |
assertTrue(changed); |
| 802 |
|
| 803 |
assertTrue(q.containsAll(p)); |
| 804 |
assertEquals(SIZE-i, q.size()); |
| 805 |
p.pollFirst(); |
| 806 |
} |
| 807 |
} |
| 808 |
|
| 809 |
/** |
| 810 |
* removeAll(c) removes only those elements of c and reports true if changed |
| 811 |
*/ |
| 812 |
public void testDescendingRemoveAll() { |
| 813 |
for (int i = 1; i < SIZE; ++i) { |
| 814 |
NavigableSet q = populatedSet(SIZE); |
| 815 |
NavigableSet p = populatedSet(i); |
| 816 |
assertTrue(q.removeAll(p)); |
| 817 |
assertEquals(SIZE-i, q.size()); |
| 818 |
for (int j = 0; j < i; ++j) { |
| 819 |
Integer I = (Integer)(p.pollFirst()); |
| 820 |
assertFalse(q.contains(I)); |
| 821 |
} |
| 822 |
} |
| 823 |
} |
| 824 |
|
| 825 |
|
| 826 |
|
| 827 |
/** |
| 828 |
* lower returns preceding element |
| 829 |
*/ |
| 830 |
public void testDescendingLower() { |
| 831 |
NavigableSet q = dset5(); |
| 832 |
Object e1 = q.lower(m3); |
| 833 |
assertEquals(m2, e1); |
| 834 |
|
| 835 |
Object e2 = q.lower(m6); |
| 836 |
assertEquals(m5, e2); |
| 837 |
|
| 838 |
Object e3 = q.lower(m1); |
| 839 |
assertNull(e3); |
| 840 |
|
| 841 |
Object e4 = q.lower(zero); |
| 842 |
assertNull(e4); |
| 843 |
} |
| 844 |
|
| 845 |
/** |
| 846 |
* higher returns next element |
| 847 |
*/ |
| 848 |
public void testDescendingHigher() { |
| 849 |
NavigableSet q = dset5(); |
| 850 |
Object e1 = q.higher(m3); |
| 851 |
assertEquals(m4, e1); |
| 852 |
|
| 853 |
Object e2 = q.higher(zero); |
| 854 |
assertEquals(m1, e2); |
| 855 |
|
| 856 |
Object e3 = q.higher(m5); |
| 857 |
assertNull(e3); |
| 858 |
|
| 859 |
Object e4 = q.higher(m6); |
| 860 |
assertNull(e4); |
| 861 |
} |
| 862 |
|
| 863 |
/** |
| 864 |
* floor returns preceding element |
| 865 |
*/ |
| 866 |
public void testDescendingFloor() { |
| 867 |
NavigableSet q = dset5(); |
| 868 |
Object e1 = q.floor(m3); |
| 869 |
assertEquals(m3, e1); |
| 870 |
|
| 871 |
Object e2 = q.floor(m6); |
| 872 |
assertEquals(m5, e2); |
| 873 |
|
| 874 |
Object e3 = q.floor(m1); |
| 875 |
assertEquals(m1, e3); |
| 876 |
|
| 877 |
Object e4 = q.floor(zero); |
| 878 |
assertNull(e4); |
| 879 |
} |
| 880 |
|
| 881 |
/** |
| 882 |
* ceiling returns next element |
| 883 |
*/ |
| 884 |
public void testDescendingCeiling() { |
| 885 |
NavigableSet q = dset5(); |
| 886 |
Object e1 = q.ceiling(m3); |
| 887 |
assertEquals(m3, e1); |
| 888 |
|
| 889 |
Object e2 = q.ceiling(zero); |
| 890 |
assertEquals(m1, e2); |
| 891 |
|
| 892 |
Object e3 = q.ceiling(m5); |
| 893 |
assertEquals(m5, e3); |
| 894 |
|
| 895 |
Object e4 = q.ceiling(m6); |
| 896 |
assertNull(e4); |
| 897 |
} |
| 898 |
|
| 899 |
/** |
| 900 |
* toArray contains all elements |
| 901 |
*/ |
| 902 |
public void testDescendingToArray() { |
| 903 |
NavigableSet q = populatedSet(SIZE); |
| 904 |
Object[] o = q.toArray(); |
| 905 |
Arrays.sort(o); |
| 906 |
for (int i = 0; i < o.length; i++) |
| 907 |
assertEquals(o[i], q.pollFirst()); |
| 908 |
} |
| 909 |
|
| 910 |
/** |
| 911 |
* toArray(a) contains all elements |
| 912 |
*/ |
| 913 |
public void testDescendingToArray2() { |
| 914 |
NavigableSet q = populatedSet(SIZE); |
| 915 |
Integer[] ints = new Integer[SIZE]; |
| 916 |
ints = (Integer[])q.toArray(ints); |
| 917 |
Arrays.sort(ints); |
| 918 |
for (int i = 0; i < ints.length; i++) |
| 919 |
assertEquals(ints[i], q.pollFirst()); |
| 920 |
} |
| 921 |
|
| 922 |
/** |
| 923 |
* iterator iterates through all elements |
| 924 |
*/ |
| 925 |
public void testDescendingIterator() { |
| 926 |
NavigableSet q = populatedSet(SIZE); |
| 927 |
int i = 0; |
| 928 |
Iterator it = q.iterator(); |
| 929 |
while (it.hasNext()) { |
| 930 |
assertTrue(q.contains(it.next())); |
| 931 |
++i; |
| 932 |
} |
| 933 |
assertEquals(i, SIZE); |
| 934 |
} |
| 935 |
|
| 936 |
/** |
| 937 |
* iterator of empty set has no elements |
| 938 |
*/ |
| 939 |
public void testDescendingEmptyIterator() { |
| 940 |
NavigableSet q = dset0(); |
| 941 |
int i = 0; |
| 942 |
Iterator it = q.iterator(); |
| 943 |
while (it.hasNext()) { |
| 944 |
assertTrue(q.contains(it.next())); |
| 945 |
++i; |
| 946 |
} |
| 947 |
assertEquals(i, 0); |
| 948 |
} |
| 949 |
|
| 950 |
/** |
| 951 |
* iterator.remove removes current element |
| 952 |
*/ |
| 953 |
public void testDescendingIteratorRemove() { |
| 954 |
final NavigableSet q = dset0(); |
| 955 |
q.add(new Integer(2)); |
| 956 |
q.add(new Integer(1)); |
| 957 |
q.add(new Integer(3)); |
| 958 |
|
| 959 |
Iterator it = q.iterator(); |
| 960 |
it.next(); |
| 961 |
it.remove(); |
| 962 |
|
| 963 |
it = q.iterator(); |
| 964 |
assertEquals(it.next(), new Integer(2)); |
| 965 |
assertEquals(it.next(), new Integer(3)); |
| 966 |
assertFalse(it.hasNext()); |
| 967 |
} |
| 968 |
|
| 969 |
|
| 970 |
/** |
| 971 |
* toString contains toStrings of elements |
| 972 |
*/ |
| 973 |
public void testDescendingToString() { |
| 974 |
NavigableSet q = populatedSet(SIZE); |
| 975 |
String s = q.toString(); |
| 976 |
for (int i = 0; i < SIZE; ++i) { |
| 977 |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
| 978 |
} |
| 979 |
} |
| 980 |
|
| 981 |
/** |
| 982 |
* A deserialized serialized set has same elements |
| 983 |
*/ |
| 984 |
public void testDescendingSerialization() throws Exception { |
| 985 |
NavigableSet q = populatedSet(SIZE); |
| 986 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
| 987 |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
| 988 |
out.writeObject(q); |
| 989 |
out.close(); |
| 990 |
|
| 991 |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
| 992 |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
| 993 |
NavigableSet r = (NavigableSet)in.readObject(); |
| 994 |
assertEquals(q.size(), r.size()); |
| 995 |
while (!q.isEmpty()) |
| 996 |
assertEquals(q.pollFirst(), r.pollFirst()); |
| 997 |
} |
| 998 |
|
| 999 |
/** |
| 1000 |
* subSet returns set with keys in requested range |
| 1001 |
*/ |
| 1002 |
public void testDescendingSubSetContents() { |
| 1003 |
NavigableSet set = dset5(); |
| 1004 |
SortedSet sm = set.subSet(m2, m4); |
| 1005 |
assertEquals(m2, sm.first()); |
| 1006 |
assertEquals(m3, sm.last()); |
| 1007 |
assertEquals(2, sm.size()); |
| 1008 |
assertFalse(sm.contains(m1)); |
| 1009 |
assertTrue(sm.contains(m2)); |
| 1010 |
assertTrue(sm.contains(m3)); |
| 1011 |
assertFalse(sm.contains(m4)); |
| 1012 |
assertFalse(sm.contains(m5)); |
| 1013 |
Iterator i = sm.iterator(); |
| 1014 |
Object k; |
| 1015 |
k = (Integer)(i.next()); |
| 1016 |
assertEquals(m2, k); |
| 1017 |
k = (Integer)(i.next()); |
| 1018 |
assertEquals(m3, k); |
| 1019 |
assertFalse(i.hasNext()); |
| 1020 |
Iterator j = sm.iterator(); |
| 1021 |
j.next(); |
| 1022 |
j.remove(); |
| 1023 |
assertFalse(set.contains(m2)); |
| 1024 |
assertEquals(4, set.size()); |
| 1025 |
assertEquals(1, sm.size()); |
| 1026 |
assertEquals(m3, sm.first()); |
| 1027 |
assertEquals(m3, sm.last()); |
| 1028 |
assertTrue(sm.remove(m3)); |
| 1029 |
assertTrue(sm.isEmpty()); |
| 1030 |
assertEquals(3, set.size()); |
| 1031 |
} |
| 1032 |
|
| 1033 |
public void testDescendingSubSetContents2() { |
| 1034 |
NavigableSet set = dset5(); |
| 1035 |
SortedSet sm = set.subSet(m2, m3); |
| 1036 |
assertEquals(1, sm.size()); |
| 1037 |
assertEquals(m2, sm.first()); |
| 1038 |
assertEquals(m2, sm.last()); |
| 1039 |
assertFalse(sm.contains(m1)); |
| 1040 |
assertTrue(sm.contains(m2)); |
| 1041 |
assertFalse(sm.contains(m3)); |
| 1042 |
assertFalse(sm.contains(m4)); |
| 1043 |
assertFalse(sm.contains(m5)); |
| 1044 |
Iterator i = sm.iterator(); |
| 1045 |
Object k; |
| 1046 |
k = (Integer)(i.next()); |
| 1047 |
assertEquals(m2, k); |
| 1048 |
assertFalse(i.hasNext()); |
| 1049 |
Iterator j = sm.iterator(); |
| 1050 |
j.next(); |
| 1051 |
j.remove(); |
| 1052 |
assertFalse(set.contains(m2)); |
| 1053 |
assertEquals(4, set.size()); |
| 1054 |
assertEquals(0, sm.size()); |
| 1055 |
assertTrue(sm.isEmpty()); |
| 1056 |
assertFalse(sm.remove(m3)); |
| 1057 |
assertEquals(4, set.size()); |
| 1058 |
} |
| 1059 |
|
| 1060 |
/** |
| 1061 |
* headSet returns set with keys in requested range |
| 1062 |
*/ |
| 1063 |
public void testDescendingHeadSetContents() { |
| 1064 |
NavigableSet set = dset5(); |
| 1065 |
SortedSet sm = set.headSet(m4); |
| 1066 |
assertTrue(sm.contains(m1)); |
| 1067 |
assertTrue(sm.contains(m2)); |
| 1068 |
assertTrue(sm.contains(m3)); |
| 1069 |
assertFalse(sm.contains(m4)); |
| 1070 |
assertFalse(sm.contains(m5)); |
| 1071 |
Iterator i = sm.iterator(); |
| 1072 |
Object k; |
| 1073 |
k = (Integer)(i.next()); |
| 1074 |
assertEquals(m1, k); |
| 1075 |
k = (Integer)(i.next()); |
| 1076 |
assertEquals(m2, k); |
| 1077 |
k = (Integer)(i.next()); |
| 1078 |
assertEquals(m3, k); |
| 1079 |
assertFalse(i.hasNext()); |
| 1080 |
sm.clear(); |
| 1081 |
assertTrue(sm.isEmpty()); |
| 1082 |
assertEquals(2, set.size()); |
| 1083 |
assertEquals(m4, set.first()); |
| 1084 |
} |
| 1085 |
|
| 1086 |
/** |
| 1087 |
* tailSet returns set with keys in requested range |
| 1088 |
*/ |
| 1089 |
public void testDescendingTailSetContents() { |
| 1090 |
NavigableSet set = dset5(); |
| 1091 |
SortedSet sm = set.tailSet(m2); |
| 1092 |
assertFalse(sm.contains(m1)); |
| 1093 |
assertTrue(sm.contains(m2)); |
| 1094 |
assertTrue(sm.contains(m3)); |
| 1095 |
assertTrue(sm.contains(m4)); |
| 1096 |
assertTrue(sm.contains(m5)); |
| 1097 |
Iterator i = sm.iterator(); |
| 1098 |
Object k; |
| 1099 |
k = (Integer)(i.next()); |
| 1100 |
assertEquals(m2, k); |
| 1101 |
k = (Integer)(i.next()); |
| 1102 |
assertEquals(m3, k); |
| 1103 |
k = (Integer)(i.next()); |
| 1104 |
assertEquals(m4, k); |
| 1105 |
k = (Integer)(i.next()); |
| 1106 |
assertEquals(m5, k); |
| 1107 |
assertFalse(i.hasNext()); |
| 1108 |
|
| 1109 |
SortedSet ssm = sm.tailSet(m4); |
| 1110 |
assertEquals(m4, ssm.first()); |
| 1111 |
assertEquals(m5, ssm.last()); |
| 1112 |
assertTrue(ssm.remove(m4)); |
| 1113 |
assertEquals(1, ssm.size()); |
| 1114 |
assertEquals(3, sm.size()); |
| 1115 |
assertEquals(4, set.size()); |
| 1116 |
} |
| 1117 |
|
| 1118 |
} |
