Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 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 | * Other contributors include Andrew Wright, Jeffrey Hayes, |
| 6 | * Pat Fisher, Mike Judd. |
| 7 | */ |
| 8 | |
| 9 | package jsr166; |
| 10 | |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 11 | import java.util.ArrayList; |
| 12 | import java.util.Arrays; |
| 13 | import java.util.Collection; |
| 14 | import java.util.Collections; |
| 15 | import java.util.Iterator; |
| 16 | import java.util.LinkedList; |
| 17 | import java.util.List; |
| 18 | import java.util.ListIterator; |
| 19 | import java.util.NoSuchElementException; |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 20 | import java.util.concurrent.CopyOnWriteArrayList; |
| 21 | |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 22 | import junit.framework.Test; |
| 23 | import junit.framework.TestSuite; |
| 24 | |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 25 | public class CopyOnWriteArrayListTest extends JSR166TestCase { |
| 26 | |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 27 | // android-note: Removed because the CTS runner does a bad job of |
| 28 | // retrying tests that have suite() declarations. |
| 29 | // |
| 30 | // public static void main(String[] args) { |
| 31 | // main(suite(), args); |
| 32 | // } |
| 33 | // public static Test suite() { |
Przemyslaw Szczepaniak | b8b7511 | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 34 | // return new TestSuite(CopyOnWriteArrayListTest.class); |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 35 | // } |
| 36 | |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 37 | static CopyOnWriteArrayList<Integer> populatedArray(int n) { |
| 38 | CopyOnWriteArrayList<Integer> a = new CopyOnWriteArrayList<Integer>(); |
| 39 | assertTrue(a.isEmpty()); |
| 40 | for (int i = 0; i < n; i++) |
| 41 | a.add(i); |
| 42 | assertFalse(a.isEmpty()); |
| 43 | assertEquals(n, a.size()); |
| 44 | return a; |
| 45 | } |
| 46 | |
| 47 | static CopyOnWriteArrayList<Integer> populatedArray(Integer[] elements) { |
| 48 | CopyOnWriteArrayList<Integer> a = new CopyOnWriteArrayList<Integer>(); |
| 49 | assertTrue(a.isEmpty()); |
| 50 | for (int i = 0; i < elements.length; i++) |
| 51 | a.add(elements[i]); |
| 52 | assertFalse(a.isEmpty()); |
| 53 | assertEquals(elements.length, a.size()); |
| 54 | return a; |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * a new list is empty |
| 59 | */ |
| 60 | public void testConstructor() { |
| 61 | CopyOnWriteArrayList a = new CopyOnWriteArrayList(); |
| 62 | assertTrue(a.isEmpty()); |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * new list contains all elements of initializing array |
| 67 | */ |
| 68 | public void testConstructor2() { |
| 69 | Integer[] ints = new Integer[SIZE]; |
Przemyslaw Szczepaniak | b8b7511 | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 70 | for (int i = 0; i < SIZE - 1; ++i) |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 71 | ints[i] = new Integer(i); |
| 72 | CopyOnWriteArrayList a = new CopyOnWriteArrayList(ints); |
| 73 | for (int i = 0; i < SIZE; ++i) |
| 74 | assertEquals(ints[i], a.get(i)); |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * new list contains all elements of initializing collection |
| 79 | */ |
| 80 | public void testConstructor3() { |
| 81 | Integer[] ints = new Integer[SIZE]; |
Przemyslaw Szczepaniak | b8b7511 | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 82 | for (int i = 0; i < SIZE - 1; ++i) |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 83 | ints[i] = new Integer(i); |
| 84 | CopyOnWriteArrayList a = new CopyOnWriteArrayList(Arrays.asList(ints)); |
| 85 | for (int i = 0; i < SIZE; ++i) |
| 86 | assertEquals(ints[i], a.get(i)); |
| 87 | } |
| 88 | |
| 89 | /** |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 90 | * addAll adds each element from the given collection, including duplicates |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 91 | */ |
| 92 | public void testAddAll() { |
| 93 | CopyOnWriteArrayList full = populatedArray(3); |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 94 | assertTrue(full.addAll(Arrays.asList(three, four, five))); |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 95 | assertEquals(6, full.size()); |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 96 | assertTrue(full.addAll(Arrays.asList(three, four, five))); |
| 97 | assertEquals(9, full.size()); |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | /** |
| 101 | * addAllAbsent adds each element from the given collection that did not |
| 102 | * already exist in the List |
| 103 | */ |
| 104 | public void testAddAllAbsent() { |
| 105 | CopyOnWriteArrayList full = populatedArray(3); |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 106 | // "one" is duplicate and will not be added |
| 107 | assertEquals(2, full.addAllAbsent(Arrays.asList(three, four, one))); |
| 108 | assertEquals(5, full.size()); |
| 109 | assertEquals(0, full.addAllAbsent(Arrays.asList(three, four, one))); |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 110 | assertEquals(5, full.size()); |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * addIfAbsent will not add the element if it already exists in the list |
| 115 | */ |
| 116 | public void testAddIfAbsent() { |
| 117 | CopyOnWriteArrayList full = populatedArray(SIZE); |
| 118 | full.addIfAbsent(one); |
| 119 | assertEquals(SIZE, full.size()); |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * addIfAbsent adds the element when it does not exist in the list |
| 124 | */ |
| 125 | public void testAddIfAbsent2() { |
| 126 | CopyOnWriteArrayList full = populatedArray(SIZE); |
| 127 | full.addIfAbsent(three); |
| 128 | assertTrue(full.contains(three)); |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * clear removes all elements from the list |
| 133 | */ |
| 134 | public void testClear() { |
| 135 | CopyOnWriteArrayList full = populatedArray(SIZE); |
| 136 | full.clear(); |
| 137 | assertEquals(0, full.size()); |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * Cloned list is equal |
| 142 | */ |
| 143 | public void testClone() { |
| 144 | CopyOnWriteArrayList l1 = populatedArray(SIZE); |
| 145 | CopyOnWriteArrayList l2 = (CopyOnWriteArrayList)(l1.clone()); |
| 146 | assertEquals(l1, l2); |
| 147 | l1.clear(); |
| 148 | assertFalse(l1.equals(l2)); |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * contains is true for added elements |
| 153 | */ |
| 154 | public void testContains() { |
| 155 | CopyOnWriteArrayList full = populatedArray(3); |
| 156 | assertTrue(full.contains(one)); |
| 157 | assertFalse(full.contains(five)); |
| 158 | } |
| 159 | |
| 160 | /** |
| 161 | * adding at an index places it in the indicated index |
| 162 | */ |
| 163 | public void testAddIndex() { |
| 164 | CopyOnWriteArrayList full = populatedArray(3); |
| 165 | full.add(0, m1); |
| 166 | assertEquals(4, full.size()); |
| 167 | assertEquals(m1, full.get(0)); |
| 168 | assertEquals(zero, full.get(1)); |
| 169 | |
| 170 | full.add(2, m2); |
| 171 | assertEquals(5, full.size()); |
| 172 | assertEquals(m2, full.get(2)); |
| 173 | assertEquals(two, full.get(4)); |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * lists with same elements are equal and have same hashCode |
| 178 | */ |
| 179 | public void testEquals() { |
| 180 | CopyOnWriteArrayList a = populatedArray(3); |
| 181 | CopyOnWriteArrayList b = populatedArray(3); |
| 182 | assertTrue(a.equals(b)); |
| 183 | assertTrue(b.equals(a)); |
Przemyslaw Szczepaniak | b8b7511 | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 184 | assertTrue(a.containsAll(b)); |
| 185 | assertTrue(b.containsAll(a)); |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 186 | assertEquals(a.hashCode(), b.hashCode()); |
| 187 | a.add(m1); |
| 188 | assertFalse(a.equals(b)); |
| 189 | assertFalse(b.equals(a)); |
Przemyslaw Szczepaniak | b8b7511 | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 190 | assertTrue(a.containsAll(b)); |
| 191 | assertFalse(b.containsAll(a)); |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 192 | b.add(m1); |
| 193 | assertTrue(a.equals(b)); |
| 194 | assertTrue(b.equals(a)); |
Przemyslaw Szczepaniak | b8b7511 | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 195 | assertTrue(a.containsAll(b)); |
| 196 | assertTrue(b.containsAll(a)); |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 197 | assertEquals(a.hashCode(), b.hashCode()); |
Przemyslaw Szczepaniak | b8b7511 | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 198 | |
| 199 | assertFalse(a.equals(null)); |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 200 | } |
| 201 | |
| 202 | /** |
Przemyslaw Szczepaniak | b8b7511 | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 203 | * containsAll returns true for collections with subset of elements |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 204 | */ |
| 205 | public void testContainsAll() { |
| 206 | CopyOnWriteArrayList full = populatedArray(3); |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 207 | assertTrue(full.containsAll(Arrays.asList())); |
| 208 | assertTrue(full.containsAll(Arrays.asList(one))); |
| 209 | assertTrue(full.containsAll(Arrays.asList(one, two))); |
| 210 | assertFalse(full.containsAll(Arrays.asList(one, two, six))); |
| 211 | assertFalse(full.containsAll(Arrays.asList(six))); |
Przemyslaw Szczepaniak | b8b7511 | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 212 | |
| 213 | try { |
| 214 | full.containsAll(null); |
| 215 | shouldThrow(); |
| 216 | } catch (NullPointerException success) {} |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 217 | } |
| 218 | |
| 219 | /** |
| 220 | * get returns the value at the given index |
| 221 | */ |
| 222 | public void testGet() { |
| 223 | CopyOnWriteArrayList full = populatedArray(3); |
| 224 | assertEquals(0, full.get(0)); |
| 225 | } |
| 226 | |
| 227 | /** |
| 228 | * indexOf gives the index for the given object |
| 229 | */ |
| 230 | public void testIndexOf() { |
| 231 | CopyOnWriteArrayList full = populatedArray(3); |
| 232 | assertEquals(1, full.indexOf(one)); |
| 233 | assertEquals(-1, full.indexOf("puppies")); |
| 234 | } |
| 235 | |
| 236 | /** |
| 237 | * indexOf gives the index based on the given index |
| 238 | * at which to start searching |
| 239 | */ |
| 240 | public void testIndexOf2() { |
| 241 | CopyOnWriteArrayList full = populatedArray(3); |
| 242 | assertEquals(1, full.indexOf(one, 0)); |
| 243 | assertEquals(-1, full.indexOf(one, 2)); |
| 244 | } |
| 245 | |
| 246 | /** |
| 247 | * isEmpty returns true when empty, else false |
| 248 | */ |
| 249 | public void testIsEmpty() { |
| 250 | CopyOnWriteArrayList empty = new CopyOnWriteArrayList(); |
| 251 | CopyOnWriteArrayList full = populatedArray(SIZE); |
| 252 | assertTrue(empty.isEmpty()); |
| 253 | assertFalse(full.isEmpty()); |
| 254 | } |
| 255 | |
| 256 | /** |
| 257 | * iterator() returns an iterator containing the elements of the |
| 258 | * list in insertion order |
| 259 | */ |
| 260 | public void testIterator() { |
| 261 | Collection empty = new CopyOnWriteArrayList(); |
| 262 | assertFalse(empty.iterator().hasNext()); |
| 263 | try { |
| 264 | empty.iterator().next(); |
| 265 | shouldThrow(); |
| 266 | } catch (NoSuchElementException success) {} |
| 267 | |
| 268 | Integer[] elements = new Integer[SIZE]; |
| 269 | for (int i = 0; i < SIZE; i++) |
| 270 | elements[i] = i; |
| 271 | Collections.shuffle(Arrays.asList(elements)); |
| 272 | Collection<Integer> full = populatedArray(elements); |
| 273 | |
| 274 | Iterator it = full.iterator(); |
| 275 | for (int j = 0; j < SIZE; j++) { |
| 276 | assertTrue(it.hasNext()); |
| 277 | assertEquals(elements[j], it.next()); |
| 278 | } |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 279 | assertIteratorExhausted(it); |
| 280 | } |
| 281 | |
| 282 | /** |
| 283 | * iterator of empty collection has no elements |
| 284 | */ |
| 285 | public void testEmptyIterator() { |
| 286 | Collection c = new CopyOnWriteArrayList(); |
| 287 | assertIteratorExhausted(c.iterator()); |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 288 | } |
| 289 | |
| 290 | /** |
| 291 | * iterator.remove throws UnsupportedOperationException |
| 292 | */ |
| 293 | public void testIteratorRemove() { |
| 294 | CopyOnWriteArrayList full = populatedArray(SIZE); |
| 295 | Iterator it = full.iterator(); |
| 296 | it.next(); |
| 297 | try { |
| 298 | it.remove(); |
| 299 | shouldThrow(); |
| 300 | } catch (UnsupportedOperationException success) {} |
| 301 | } |
| 302 | |
| 303 | /** |
| 304 | * toString contains toString of elements |
| 305 | */ |
| 306 | public void testToString() { |
| 307 | assertEquals("[]", new CopyOnWriteArrayList().toString()); |
| 308 | CopyOnWriteArrayList full = populatedArray(3); |
| 309 | String s = full.toString(); |
| 310 | for (int i = 0; i < 3; ++i) |
| 311 | assertTrue(s.contains(String.valueOf(i))); |
| 312 | assertEquals(new ArrayList(full).toString(), |
| 313 | full.toString()); |
| 314 | } |
| 315 | |
| 316 | /** |
| 317 | * lastIndexOf returns the index for the given object |
| 318 | */ |
| 319 | public void testLastIndexOf1() { |
| 320 | CopyOnWriteArrayList full = populatedArray(3); |
| 321 | full.add(one); |
| 322 | full.add(three); |
| 323 | assertEquals(3, full.lastIndexOf(one)); |
| 324 | assertEquals(-1, full.lastIndexOf(six)); |
| 325 | } |
| 326 | |
| 327 | /** |
| 328 | * lastIndexOf returns the index from the given starting point |
| 329 | */ |
| 330 | public void testLastIndexOf2() { |
| 331 | CopyOnWriteArrayList full = populatedArray(3); |
| 332 | full.add(one); |
| 333 | full.add(three); |
| 334 | assertEquals(3, full.lastIndexOf(one, 4)); |
| 335 | assertEquals(-1, full.lastIndexOf(three, 3)); |
| 336 | } |
| 337 | |
| 338 | /** |
| 339 | * listIterator traverses all elements |
| 340 | */ |
| 341 | public void testListIterator1() { |
| 342 | CopyOnWriteArrayList full = populatedArray(SIZE); |
| 343 | ListIterator i = full.listIterator(); |
| 344 | int j; |
| 345 | for (j = 0; i.hasNext(); j++) |
| 346 | assertEquals(j, i.next()); |
| 347 | assertEquals(SIZE, j); |
| 348 | } |
| 349 | |
| 350 | /** |
| 351 | * listIterator only returns those elements after the given index |
| 352 | */ |
| 353 | public void testListIterator2() { |
| 354 | CopyOnWriteArrayList full = populatedArray(3); |
| 355 | ListIterator i = full.listIterator(1); |
| 356 | int j; |
| 357 | for (j = 0; i.hasNext(); j++) |
Przemyslaw Szczepaniak | b8b7511 | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 358 | assertEquals(j + 1, i.next()); |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 359 | assertEquals(2, j); |
| 360 | } |
| 361 | |
| 362 | /** |
| 363 | * remove(int) removes and returns the object at the given index |
| 364 | */ |
| 365 | public void testRemove_int() { |
| 366 | int SIZE = 3; |
| 367 | for (int i = 0; i < SIZE; i++) { |
| 368 | CopyOnWriteArrayList full = populatedArray(SIZE); |
| 369 | assertEquals(i, full.remove(i)); |
| 370 | assertEquals(SIZE - 1, full.size()); |
| 371 | assertFalse(full.contains(new Integer(i))); |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | /** |
| 376 | * remove(Object) removes the object if found and returns true |
| 377 | */ |
| 378 | public void testRemove_Object() { |
| 379 | int SIZE = 3; |
| 380 | for (int i = 0; i < SIZE; i++) { |
| 381 | CopyOnWriteArrayList full = populatedArray(SIZE); |
| 382 | assertFalse(full.remove(new Integer(-42))); |
| 383 | assertTrue(full.remove(new Integer(i))); |
| 384 | assertEquals(SIZE - 1, full.size()); |
| 385 | assertFalse(full.contains(new Integer(i))); |
| 386 | } |
| 387 | CopyOnWriteArrayList x = new CopyOnWriteArrayList(Arrays.asList(4, 5, 6)); |
| 388 | assertTrue(x.remove(new Integer(6))); |
| 389 | assertEquals(x, Arrays.asList(4, 5)); |
| 390 | assertTrue(x.remove(new Integer(4))); |
| 391 | assertEquals(x, Arrays.asList(5)); |
| 392 | assertTrue(x.remove(new Integer(5))); |
| 393 | assertEquals(x, Arrays.asList()); |
| 394 | assertFalse(x.remove(new Integer(5))); |
| 395 | } |
| 396 | |
| 397 | /** |
| 398 | * removeAll removes all elements from the given collection |
| 399 | */ |
| 400 | public void testRemoveAll() { |
| 401 | CopyOnWriteArrayList full = populatedArray(3); |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 402 | assertTrue(full.removeAll(Arrays.asList(one, two))); |
| 403 | assertEquals(1, full.size()); |
| 404 | assertFalse(full.removeAll(Arrays.asList(one, two))); |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 405 | assertEquals(1, full.size()); |
| 406 | } |
| 407 | |
| 408 | /** |
| 409 | * set changes the element at the given index |
| 410 | */ |
| 411 | public void testSet() { |
| 412 | CopyOnWriteArrayList full = populatedArray(3); |
| 413 | assertEquals(2, full.set(2, four)); |
| 414 | assertEquals(4, full.get(2)); |
| 415 | } |
| 416 | |
| 417 | /** |
| 418 | * size returns the number of elements |
| 419 | */ |
| 420 | public void testSize() { |
| 421 | CopyOnWriteArrayList empty = new CopyOnWriteArrayList(); |
| 422 | CopyOnWriteArrayList full = populatedArray(SIZE); |
| 423 | assertEquals(SIZE, full.size()); |
| 424 | assertEquals(0, empty.size()); |
| 425 | } |
| 426 | |
| 427 | /** |
| 428 | * toArray() returns an Object array containing all elements from |
| 429 | * the list in insertion order |
| 430 | */ |
| 431 | public void testToArray() { |
| 432 | Object[] a = new CopyOnWriteArrayList().toArray(); |
| 433 | assertTrue(Arrays.equals(new Object[0], a)); |
| 434 | assertSame(Object[].class, a.getClass()); |
| 435 | |
| 436 | Integer[] elements = new Integer[SIZE]; |
| 437 | for (int i = 0; i < SIZE; i++) |
| 438 | elements[i] = i; |
| 439 | Collections.shuffle(Arrays.asList(elements)); |
| 440 | Collection<Integer> full = populatedArray(elements); |
| 441 | |
| 442 | assertTrue(Arrays.equals(elements, full.toArray())); |
| 443 | assertSame(Object[].class, full.toArray().getClass()); |
| 444 | } |
| 445 | |
| 446 | /** |
| 447 | * toArray(Integer array) returns an Integer array containing all |
| 448 | * elements from the list in insertion order |
| 449 | */ |
| 450 | public void testToArray2() { |
| 451 | Collection empty = new CopyOnWriteArrayList(); |
| 452 | Integer[] a; |
| 453 | |
| 454 | a = new Integer[0]; |
| 455 | assertSame(a, empty.toArray(a)); |
| 456 | |
Przemyslaw Szczepaniak | b8b7511 | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 457 | a = new Integer[SIZE / 2]; |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 458 | Arrays.fill(a, 42); |
| 459 | assertSame(a, empty.toArray(a)); |
| 460 | assertNull(a[0]); |
| 461 | for (int i = 1; i < a.length; i++) |
| 462 | assertEquals(42, (int) a[i]); |
| 463 | |
| 464 | Integer[] elements = new Integer[SIZE]; |
| 465 | for (int i = 0; i < SIZE; i++) |
| 466 | elements[i] = i; |
| 467 | Collections.shuffle(Arrays.asList(elements)); |
| 468 | Collection<Integer> full = populatedArray(elements); |
| 469 | |
| 470 | Arrays.fill(a, 42); |
| 471 | assertTrue(Arrays.equals(elements, full.toArray(a))); |
| 472 | for (int i = 0; i < a.length; i++) |
| 473 | assertEquals(42, (int) a[i]); |
| 474 | assertSame(Integer[].class, full.toArray(a).getClass()); |
| 475 | |
| 476 | a = new Integer[SIZE]; |
| 477 | Arrays.fill(a, 42); |
| 478 | assertSame(a, full.toArray(a)); |
| 479 | assertTrue(Arrays.equals(elements, a)); |
| 480 | |
Przemyslaw Szczepaniak | b8b7511 | 2016-03-11 15:59:10 +0000 | [diff] [blame] | 481 | a = new Integer[2 * SIZE]; |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 482 | Arrays.fill(a, 42); |
| 483 | assertSame(a, full.toArray(a)); |
| 484 | assertTrue(Arrays.equals(elements, Arrays.copyOf(a, SIZE))); |
| 485 | assertNull(a[SIZE]); |
| 486 | for (int i = SIZE + 1; i < a.length; i++) |
| 487 | assertEquals(42, (int) a[i]); |
| 488 | } |
| 489 | |
| 490 | /** |
| 491 | * sublists contains elements at indexes offset from their base |
| 492 | */ |
| 493 | public void testSubList() { |
| 494 | CopyOnWriteArrayList a = populatedArray(10); |
| 495 | assertTrue(a.subList(1,1).isEmpty()); |
| 496 | for (int j = 0; j < 9; ++j) { |
| 497 | for (int i = j ; i < 10; ++i) { |
| 498 | List b = a.subList(j,i); |
| 499 | for (int k = j; k < i; ++k) { |
| 500 | assertEquals(new Integer(k), b.get(k-j)); |
| 501 | } |
| 502 | } |
| 503 | } |
| 504 | |
| 505 | List s = a.subList(2, 5); |
| 506 | assertEquals(3, s.size()); |
| 507 | s.set(2, m1); |
| 508 | assertEquals(a.get(4), m1); |
| 509 | s.clear(); |
| 510 | assertEquals(7, a.size()); |
| 511 | } |
| 512 | |
| 513 | // Exception tests |
| 514 | |
| 515 | /** |
| 516 | * toArray throws an ArrayStoreException when the given array |
| 517 | * can not store the objects inside the list |
| 518 | */ |
| 519 | public void testToArray_ArrayStoreException() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 520 | CopyOnWriteArrayList c = new CopyOnWriteArrayList(); |
| 521 | c.add("zfasdfsdf"); |
| 522 | c.add("asdadasd"); |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 523 | try { |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 524 | c.toArray(new Long[5]); |
| 525 | shouldThrow(); |
| 526 | } catch (ArrayStoreException success) {} |
| 527 | } |
| 528 | |
| 529 | /** |
| 530 | * get throws an IndexOutOfBoundsException on a negative index |
| 531 | */ |
| 532 | public void testGet1_IndexOutOfBoundsException() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 533 | CopyOnWriteArrayList c = populatedArray(5); |
| 534 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 535 | for (List list : lists) { |
| 536 | try { |
| 537 | list.get(-1); |
| 538 | shouldThrow(); |
| 539 | } catch (IndexOutOfBoundsException success) {} |
| 540 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 541 | } |
| 542 | |
| 543 | /** |
| 544 | * get throws an IndexOutOfBoundsException on a too high index |
| 545 | */ |
| 546 | public void testGet2_IndexOutOfBoundsException() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 547 | CopyOnWriteArrayList c = populatedArray(5); |
| 548 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 549 | for (List list : lists) { |
| 550 | try { |
| 551 | list.get(list.size()); |
| 552 | shouldThrow(); |
| 553 | } catch (IndexOutOfBoundsException success) {} |
| 554 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 555 | } |
| 556 | |
| 557 | /** |
| 558 | * set throws an IndexOutOfBoundsException on a negative index |
| 559 | */ |
| 560 | public void testSet1_IndexOutOfBoundsException() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 561 | CopyOnWriteArrayList c = populatedArray(5); |
| 562 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 563 | for (List list : lists) { |
| 564 | try { |
| 565 | list.set(-1, "qwerty"); |
| 566 | shouldThrow(); |
| 567 | } catch (IndexOutOfBoundsException success) {} |
| 568 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 569 | } |
| 570 | |
| 571 | /** |
| 572 | * set throws an IndexOutOfBoundsException on a too high index |
| 573 | */ |
| 574 | public void testSet2() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 575 | CopyOnWriteArrayList c = populatedArray(5); |
| 576 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 577 | for (List list : lists) { |
| 578 | try { |
| 579 | list.set(list.size(), "qwerty"); |
| 580 | shouldThrow(); |
| 581 | } catch (IndexOutOfBoundsException success) {} |
| 582 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 583 | } |
| 584 | |
| 585 | /** |
| 586 | * add throws an IndexOutOfBoundsException on a negative index |
| 587 | */ |
| 588 | public void testAdd1_IndexOutOfBoundsException() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 589 | CopyOnWriteArrayList c = populatedArray(5); |
| 590 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 591 | for (List list : lists) { |
| 592 | try { |
| 593 | list.add(-1, "qwerty"); |
| 594 | shouldThrow(); |
| 595 | } catch (IndexOutOfBoundsException success) {} |
| 596 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 597 | } |
| 598 | |
| 599 | /** |
| 600 | * add throws an IndexOutOfBoundsException on a too high index |
| 601 | */ |
| 602 | public void testAdd2_IndexOutOfBoundsException() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 603 | CopyOnWriteArrayList c = populatedArray(5); |
| 604 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 605 | for (List list : lists) { |
| 606 | try { |
| 607 | list.add(list.size() + 1, "qwerty"); |
| 608 | shouldThrow(); |
| 609 | } catch (IndexOutOfBoundsException success) {} |
| 610 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 611 | } |
| 612 | |
| 613 | /** |
| 614 | * remove throws an IndexOutOfBoundsException on a negative index |
| 615 | */ |
| 616 | public void testRemove1_IndexOutOfBounds() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 617 | CopyOnWriteArrayList c = populatedArray(5); |
| 618 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 619 | for (List list : lists) { |
| 620 | try { |
| 621 | list.remove(-1); |
| 622 | shouldThrow(); |
| 623 | } catch (IndexOutOfBoundsException success) {} |
| 624 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 625 | } |
| 626 | |
| 627 | /** |
| 628 | * remove throws an IndexOutOfBoundsException on a too high index |
| 629 | */ |
| 630 | public void testRemove2_IndexOutOfBounds() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 631 | CopyOnWriteArrayList c = populatedArray(5); |
| 632 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 633 | for (List list : lists) { |
| 634 | try { |
| 635 | list.remove(list.size()); |
| 636 | shouldThrow(); |
| 637 | } catch (IndexOutOfBoundsException success) {} |
| 638 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 639 | } |
| 640 | |
| 641 | /** |
| 642 | * addAll throws an IndexOutOfBoundsException on a negative index |
| 643 | */ |
| 644 | public void testAddAll1_IndexOutOfBoundsException() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 645 | CopyOnWriteArrayList c = populatedArray(5); |
| 646 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 647 | for (List list : lists) { |
| 648 | try { |
| 649 | list.addAll(-1, new LinkedList()); |
| 650 | shouldThrow(); |
| 651 | } catch (IndexOutOfBoundsException success) {} |
| 652 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 653 | } |
| 654 | |
| 655 | /** |
| 656 | * addAll throws an IndexOutOfBoundsException on a too high index |
| 657 | */ |
| 658 | public void testAddAll2_IndexOutOfBoundsException() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 659 | CopyOnWriteArrayList c = populatedArray(5); |
| 660 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 661 | for (List list : lists) { |
| 662 | try { |
| 663 | list.addAll(list.size() + 1, new LinkedList()); |
| 664 | shouldThrow(); |
| 665 | } catch (IndexOutOfBoundsException success) {} |
| 666 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 667 | } |
| 668 | |
| 669 | /** |
| 670 | * listIterator throws an IndexOutOfBoundsException on a negative index |
| 671 | */ |
| 672 | public void testListIterator1_IndexOutOfBoundsException() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 673 | CopyOnWriteArrayList c = populatedArray(5); |
| 674 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 675 | for (List list : lists) { |
| 676 | try { |
| 677 | list.listIterator(-1); |
| 678 | shouldThrow(); |
| 679 | } catch (IndexOutOfBoundsException success) {} |
| 680 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 681 | } |
| 682 | |
| 683 | /** |
| 684 | * listIterator throws an IndexOutOfBoundsException on a too high index |
| 685 | */ |
| 686 | public void testListIterator2_IndexOutOfBoundsException() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 687 | CopyOnWriteArrayList c = populatedArray(5); |
| 688 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 689 | for (List list : lists) { |
| 690 | try { |
| 691 | list.listIterator(list.size() + 1); |
| 692 | shouldThrow(); |
| 693 | } catch (IndexOutOfBoundsException success) {} |
| 694 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 695 | } |
| 696 | |
| 697 | /** |
| 698 | * subList throws an IndexOutOfBoundsException on a negative index |
| 699 | */ |
| 700 | public void testSubList1_IndexOutOfBoundsException() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 701 | CopyOnWriteArrayList c = populatedArray(5); |
| 702 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 703 | for (List list : lists) { |
| 704 | try { |
| 705 | list.subList(-1, list.size()); |
| 706 | shouldThrow(); |
| 707 | } catch (IndexOutOfBoundsException success) {} |
| 708 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 709 | } |
| 710 | |
| 711 | /** |
| 712 | * subList throws an IndexOutOfBoundsException on a too high index |
| 713 | */ |
| 714 | public void testSubList2_IndexOutOfBoundsException() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 715 | CopyOnWriteArrayList c = populatedArray(5); |
| 716 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 717 | for (List list : lists) { |
| 718 | try { |
| 719 | list.subList(0, list.size() + 1); |
| 720 | shouldThrow(); |
| 721 | } catch (IndexOutOfBoundsException success) {} |
| 722 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 723 | } |
| 724 | |
| 725 | /** |
| 726 | * subList throws IndexOutOfBoundsException when the second index |
| 727 | * is lower then the first |
| 728 | */ |
| 729 | public void testSubList3_IndexOutOfBoundsException() { |
Narayan Kamath | 8e9a0e9 | 2015-04-28 11:40:00 +0100 | [diff] [blame] | 730 | CopyOnWriteArrayList c = populatedArray(5); |
| 731 | List[] lists = { c, c.subList(1, c.size() - 1) }; |
| 732 | for (List list : lists) { |
| 733 | try { |
| 734 | list.subList(list.size() - 1, 1); |
| 735 | shouldThrow(); |
| 736 | } catch (IndexOutOfBoundsException success) {} |
| 737 | } |
Calin Juravle | 8f0d92b | 2013-08-01 17:26:00 +0100 | [diff] [blame] | 738 | } |
| 739 | |
| 740 | /** |
| 741 | * a deserialized serialized list is equal |
| 742 | */ |
| 743 | public void testSerialization() throws Exception { |
| 744 | List x = populatedArray(SIZE); |
| 745 | List y = serialClone(x); |
| 746 | |
| 747 | assertNotSame(x, y); |
| 748 | assertEquals(x.size(), y.size()); |
| 749 | assertEquals(x.toString(), y.toString()); |
| 750 | assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
| 751 | assertEquals(x, y); |
| 752 | assertEquals(y, x); |
| 753 | while (!x.isEmpty()) { |
| 754 | assertFalse(y.isEmpty()); |
| 755 | assertEquals(x.remove(0), y.remove(0)); |
| 756 | } |
| 757 | assertTrue(y.isEmpty()); |
| 758 | } |
| 759 | |
| 760 | } |