1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 13 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 14 * License for the specific language governing permissions and limitations under 15 * the License. 16 */ 17 18 package org.apache.harmony.luni.tests.java.util; 19 20 import java.io.Serializable; 21 import java.util.ArrayList; 22 import java.util.Arrays; 23 import java.util.Collection; 24 import java.util.Collections; 25 import java.util.Comparator; 26 import java.util.HashMap; 27 import java.util.HashSet; 28 import java.util.LinkedList; 29 import java.util.List; 30 import java.util.Map; 31 import java.util.RandomAccess; 32 import java.util.Set; 33 import java.util.SortedMap; 34 import java.util.SortedSet; 35 import java.util.TreeMap; 36 import java.util.TreeSet; 37 import java.util.Vector; 38 39 import org.apache.harmony.testframework.serialization.SerializationTest; 40 import org.apache.harmony.testframework.serialization.SerializationTest.SerializableAssert; 41 42 import junit.framework.TestCase; 43 import tests.util.SerializationTester; 44 45 public class Collections2Test extends TestCase { 46 47 private static final SerializableAssert comparator = new SerializableAssert() { 48 public void assertDeserialized(Serializable reference, Serializable test) { 49 assertSame(reference, test); 50 } 51 }; 52 53 /** 54 * @tests java.util.Collections#binarySearch(java.util.List, 55 * java.lang.Object, java.util.Comparator) 56 */ 57 public void test_binarySearchLjava_util_ListLjava_lang_ObjectLjava_util_Comparator() { 58 // Regression for HARMONY-94 59 LinkedList<Integer> lst = new LinkedList<Integer>(); 60 lst.add(new Integer(30)); 61 Collections.sort(lst, null); 62 int index = Collections.binarySearch(lst, new Integer(2), null); 63 assertEquals(-1, index); 64 } 65 66 /** 67 * @tests java.util.Collections#binarySearch(java.util.List, 68 * java.lang.Object) 69 */ 70 @SuppressWarnings("unchecked") 71 public void test_binarySearchLjava_util_ListLjava_lang_Object() { 72 // regression for Harmony-1367 73 List localList = new LinkedList(); 74 assertEquals(-1, Collections.binarySearch(localList, new Object())); 75 localList.add(new Object()); 76 try { 77 Collections.binarySearch(localList, new Integer(1)); 78 fail("Should throw ClassCastException"); 79 } catch (ClassCastException e) { 80 // expected 81 } 82 } 83 84 /** 85 * @tests java.util.Collections#rotate(java.util.List, int) 86 */ 87 public void test_rotateLjava_util_ListI() { 88 // Regression for HARMONY-19 Rotate an *empty* list 89 Collections.rotate(new ArrayList<Object>(), 25); 90 91 // Regression for HARMONY-20 92 List<String> list = new ArrayList<String>(); 93 list.add(0, "zero"); 94 list.add(1, "one"); 95 list.add(2, "two"); 96 list.add(3, "three"); 97 list.add(4, "four"); 98 99 Collections.rotate(list, Integer.MIN_VALUE); 100 assertEquals("Rotated incorrectly at position 0, ", "three", 101 list.get(0)); 102 assertEquals("Rotated incorrectly at position 1, ", "four", 103 list.get(1)); 104 assertEquals("Rotated incorrectly at position 2, ", "zero", 105 list.get(2)); 106 assertEquals("Rotated incorrectly at position 3, ", "one", 107 list.get(3)); 108 assertEquals("Rotated incorrectly at position 4, ", "two", 109 list.get(4)); 110 } 111 112 /** 113 * @tests java.util.Collections#synchronizedCollection(java.util.Collection) 114 */ 115 public void test_synchronizedCollectionLjava_util_Collection() { 116 try { 117 // Regression for HARMONY-93 118 Collections.synchronizedCollection(null); 119 fail("Assert 0: synchronizedCollection(null) must throw NPE"); 120 } catch (NullPointerException e) { 121 // expected 122 } 123 } 124 125 /** 126 * @tests java.util.Collections#synchronizedSortedMap(java.util.SortedMap) 127 */ 128 public void test_synchronizedSortedMapLjava_util_SortedMap() { 129 try { 130 // Regression for HARMONY-93 131 Collections.synchronizedSortedMap(null); 132 fail("Assert 0: synchronizedSortedMap(null) must throw NPE"); 133 } catch (NullPointerException e) { 134 // expected 135 } 136 } 137 138 /** 139 * @tests java.util.Collections#synchronizedMap(java.util.Map) 140 */ 141 public void test_synchronizedMapLjava_util_Map() { 142 try { 143 // Regression for HARMONY-93 144 Collections.synchronizedMap(null); 145 fail("Assert 0: synchronizedMap(map) must throw NPE"); 146 } catch (NullPointerException e) { 147 // expected 148 } 149 } 150 151 /** 152 * @tests java.util.Collections#synchronizedSet(java.util.Set) 153 */ 154 public void test_synchronizedSetLjava_util_Set() { 155 try { 156 // Regression for HARMONY-93 157 Collections.synchronizedSet(null); 158 fail("Assert 0: synchronizedSet(set) must throw NPE"); 159 } catch (NullPointerException e) { 160 // expected 161 } 162 } 163 164 /** 165 * @tests java.util.Collections#synchronizedSortedSet(java.util.SortedSet) 166 */ 167 public void test_synchronizedSortedSetLjava_util_SortedSet() { 168 try { 169 // Regression for HARMONY-93 170 Collections.synchronizedSortedSet(null); 171 fail("Assert 0: synchronizedSortedSet(null) must throw NPE"); 172 } catch (NullPointerException e) { 173 // expected 174 } 175 } 176 177 /** 178 * @tests java.util.Collections#unmodifiableCollection(java.util.Collection) 179 */ 180 public void test_unmodifiableCollectionLjava_util_Collection() { 181 try { 182 // Regression for HARMONY-93 183 Collections.unmodifiableCollection(null); 184 fail("Assert 0: unmodifiableCollection(null) must throw NPE"); 185 } catch (NullPointerException e) { 186 // expected 187 } 188 } 189 190 /** 191 * @tests java.util.Collections#unmodifiableMap(java.util.Map) 192 */ 193 public void test_unmodifiableMapLjava_util_Map() { 194 try { 195 // Regression for HARMONY-93 196 Collections.unmodifiableMap(null); 197 fail("Assert 0: unmodifiableMap(null) must throw NPE"); 198 } catch (NullPointerException e) { 199 // expected 200 } 201 } 202 203 /** 204 * @tests java.util.Collections#unmodifiableSet(java.util.Set) 205 */ 206 public void test_unmodifiableSetLjava_util_Set() { 207 try { 208 // Regression for HARMONY-93 209 Collections.unmodifiableSet(null); 210 fail("Assert 0: unmodifiableSet(null) must throw NPE"); 211 } catch (NullPointerException e) { 212 // expected 213 } 214 } 215 216 /** 217 * @tests java.util.Collections#unmodifiableSortedMap(java.util.SortedMap) 218 */ 219 public void test_unmodifiableSortedMapLjava_util_SortedMap() { 220 try { 221 // Regression for HARMONY-93 222 Collections.unmodifiableSortedMap(null); 223 fail("Assert 0: unmodifiableSortedMap(null) must throw NPE"); 224 } catch (NullPointerException e) { 225 // expected 226 } 227 } 228 229 /** 230 * @tests java.util.Collections#unmodifiableSortedSet(java.util.SortedSet) 231 */ 232 public void test_unmodifiableSortedSetLjava_util_SortedSet() { 233 try { 234 // Regression for HARMONY-93 235 Collections.unmodifiableSortedSet(null); 236 fail("Assert 0: unmodifiableSortedSet(null) must throw NPE"); 237 } catch (NullPointerException e) { 238 // expected 239 } 240 } 241 242 /** 243 * @tests java.util.Collections#frequency(java.util.Collection,Object) 244 */ 245 public void test_frequencyLjava_util_CollectionLint() { 246 try { 247 Collections.frequency(null, null); 248 fail("Assert 0: frequency(null,<any>) must throw NPE"); 249 } catch (NullPointerException e) {} 250 251 List<String> strings = Arrays.asList(new String[] { "1", "2", "3", "1", "1" }); 252 253 assertEquals("Assert 1: did not find three \"1\" strings", 3, 254 Collections.frequency(strings, "1")); 255 256 assertEquals("Assert 2: did not find one \"2\" strings", 1, Collections 257 .frequency(strings, "2")); 258 259 assertEquals("Assert 3: did not find three \"3\" strings", 1, 260 Collections.frequency(strings, "3")); 261 262 assertEquals("Assert 4: matched on null when there are none", 0, 263 Collections.frequency(strings, null)); 264 265 List<Object> objects = Arrays.asList(new Object[] { new Integer(1), null, null, 266 new Long(1) }); 267 268 assertEquals("Assert 5: did not find one Integer(1)", 1, Collections 269 .frequency(objects, new Integer(1))); 270 271 assertEquals("Assert 6: did not find one Long(1)", 1, Collections 272 .frequency(objects, new Long(1))); 273 274 assertEquals("Assert 7: did not find two null references", 2, 275 Collections.frequency(objects, null)); 276 } 277 278 /** 279 * @tests java.util.Collections#reverseOrder() 280 */ 281 public void test_reverseOrder() { 282 Comparator<String> roc = Collections.reverseOrder(); 283 assertNotNull("Assert 0: comparator must not be null", roc); 284 285 assertTrue("Assert 1: comparator must implement Serializable", 286 roc instanceof Serializable); 287 288 String[] fixtureDesc = new String[] { "2", "1", "0" }; 289 String[] numbers = new String[] { "0", "1", "2" }; 290 Arrays.sort(numbers, roc); 291 assertTrue("Assert 2: the arrays are not equal, the sort failed", 292 Arrays.equals(fixtureDesc, numbers)); 293 } 294 295 /** 296 * @tests java.util.Collections#reverseOrder(java.util.Comparator) 297 */ 298 public void test_reverseOrderLjava_util_Comparator() { 299 Comparator<String> roc = Collections 300 .reverseOrder(String.CASE_INSENSITIVE_ORDER); 301 assertNotNull("Assert 0: comparator must not be null", roc); 302 303 assertTrue("Assert 1: comparator must implement Serializable", 304 roc instanceof Serializable); 305 306 String[] fixtureDesc = new String[] { "2", "1", "0" }; 307 String[] numbers = new String[] { "0", "1", "2" }; 308 Arrays.sort(numbers, roc); 309 assertTrue("Assert 2: the arrays are not equal, the sort failed", 310 Arrays.equals(fixtureDesc, numbers)); 311 312 roc = Collections.reverseOrder(null); 313 assertNotNull("Assert 3: comparator must not be null", roc); 314 315 assertTrue("Assert 4: comparator must implement Serializable", 316 roc instanceof Serializable); 317 318 numbers = new String[] { "0", "1", "2" }; 319 Arrays.sort(numbers, roc); 320 assertTrue("Assert 5: the arrays are not equal, the sort failed", 321 Arrays.equals(fixtureDesc, numbers)); 322 } 323 324 public void test_AddAll() { 325 List<Object> l = new ArrayList<Object>(); 326 assertFalse(Collections.addAll(l, new Object[] {})); 327 assertTrue(l.isEmpty()); 328 assertTrue(Collections.addAll(l, new Object[] { new Integer(1), 329 new Integer(2), new Integer(3) })); 330 assertFalse(l.isEmpty()); 331 assertTrue(l.equals(Arrays.asList(new Object[] { new Integer(1), 332 new Integer(2), new Integer(3) }))); 333 } 334 335 public void test_Disjoint() { 336 Object[] arr1 = new Object[10]; 337 for (int i = 0; i < arr1.length; i++) { 338 arr1[i] = new Integer(i); 339 } 340 Object[] arr2 = new Object[20]; 341 for (int i = 0; i < arr2.length; i++) { 342 arr2[i] = new Integer(100 + i); 343 } 344 Collection<Object> c1 = new ArrayList<Object>(); 345 Collection<Object> c2 = new ArrayList<Object>(); 346 Collections.addAll(c1, arr1); 347 Collections.addAll(c2, arr2); 348 assertTrue(Collections.disjoint(c1, c2)); 349 c1.add(arr2[10]); 350 assertFalse(Collections.disjoint(c1, c2)); 351 352 c1 = new LinkedList<Object>(); 353 c2 = new LinkedList<Object>(); 354 Collections.addAll(c1, arr1); 355 Collections.addAll(c2, arr2); 356 assertTrue(Collections.disjoint(c1, c2)); 357 c1.add(arr2[10]); 358 assertFalse(Collections.disjoint(c1, c2)); 359 360 c1 = new TreeSet<Object>(); 361 c2 = new TreeSet<Object>(); 362 Collections.addAll(c1, arr1); 363 Collections.addAll(c2, arr2); 364 assertTrue(Collections.disjoint(c1, c2)); 365 c1.add(arr2[10]); 366 assertFalse(Collections.disjoint(c1, c2)); 367 368 c1 = new HashSet<Object>(); 369 c2 = new HashSet<Object>(); 370 Collections.addAll(c1, arr1); 371 Collections.addAll(c2, arr2); 372 assertTrue(Collections.disjoint(c1, c2)); 373 c1.add(arr2[10]); 374 assertFalse(Collections.disjoint(c1, c2)); 375 376 c1 = new LinkedList<Object>(); 377 c2 = new TreeSet<Object>(); 378 Collections.addAll(c1, arr1); 379 Collections.addAll(c2, arr2); 380 assertTrue(Collections.disjoint(c1, c2)); 381 c1.add(arr2[10]); 382 assertFalse(Collections.disjoint(c1, c2)); 383 384 c1 = new Vector<Object>(); 385 c2 = new HashSet<Object>(); 386 Collections.addAll(c1, arr1); 387 Collections.addAll(c2, arr2); 388 assertTrue(Collections.disjoint(c1, c2)); 389 c1.add(arr2[10]); 390 assertFalse(Collections.disjoint(c1, c2)); 391 392 } 393 394 /** 395 * @tests java.util.Collections.EmptyList#readResolve() 396 */ 397 public void test_EmptyList_readResolve() throws Exception { 398 SerializationTest.verifySelf(Collections.EMPTY_LIST, comparator); 399 } 400 401 /** 402 * @tests java.util.Collections.EmptyMap#readResolve() 403 */ 404 public void test_EmptyMap_readResolve() throws Exception { 405 SerializationTest.verifySelf(Collections.EMPTY_MAP, comparator); 406 } 407 408 /** 409 * @tests java.util.Collections.EmptySet#readResolve() 410 */ 411 public void test_EmptySet_readResolve() throws Exception { 412 SerializationTest.verifySelf(Collections.EMPTY_SET, comparator); 413 } 414 415 public void test_checkedCollectionSerializationCompatability() throws Exception { 416 Collection<String> c = Collections.emptySet(); 417 c = Collections.checkedCollection(c, String.class); 418 SerializationTester.assertCompabilityEquals(c, "serialization/java/util/Collections_CheckedCollection.golden.ser"); 419 } 420 421 public void test_checkedListRandomAccessSerializationCompatability() throws Exception { 422 List<String> c = new ArrayList<String>(); 423 assertTrue(c instanceof RandomAccess); 424 c = Collections.checkedList(c, String.class); 425 SerializationTester.assertCompabilityEquals(c, "serialization/java/util/Collections_CheckedListRandomAccess.golden.ser"); 426 } 427 428 public void test_checkedListSerializationCompatability() throws Exception { 429 List<String> c = new LinkedList<String>(); 430 assertFalse(c instanceof RandomAccess); 431 c = Collections.checkedList(c, String.class); 432 SerializationTester.assertCompabilityEquals(c, "serialization/java/util/Collections_CheckedList.golden.ser"); 433 } 434 435 public void test_checkedSetSerializationCompatability() throws Exception { 436 Set<String> c = new HashSet<String>(); 437 assertFalse(c instanceof SortedSet); 438 c = Collections.checkedSet(c, String.class); 439 SerializationTester.assertCompabilityEquals(c, "serialization/java/util/Collections_CheckedSet.golden.ser"); 440 } 441 442 public void test_checkedMapSerializationCompatability() throws Exception { 443 Map<String, String> c = new HashMap<String, String>(); 444 assertFalse(c instanceof SortedMap); 445 c = Collections.checkedMap(c, String.class, String.class); 446 SerializationTester.assertCompabilityEquals(c, "serialization/java/util/Collections_CheckedMap.golden.ser"); 447 } 448 449 public void test_checkedSortedSetSerializationCompatability() throws Exception { 450 SortedSet<String> c = new TreeSet<String>(); 451 c = Collections.checkedSortedSet(c, String.class); 452 SerializationTester.assertCompabilityEquals(c, "serialization/java/util/Collections_CheckedSortedSet.golden.ser"); 453 } 454 455 public void test_checkedSortedMapSerializationCompatability() throws Exception { 456 SortedMap<String, String> c = new TreeMap<String, String>(); 457 c = Collections.checkedSortedMap(c, String.class, String.class); 458 SerializationTester.assertCompabilityEquals(c, "serialization/java/util/Collections_CheckedSortedMap.golden.ser"); 459 } 460 461 public void test_emptyList(){ 462 List<Object> emptyList = Collections.emptyList(); 463 assertEquals(0, emptyList.size()); 464 assertTrue(emptyList instanceof RandomAccess); 465 } 466 467 // Regression test for http://issues.apache.org/jira/browse/HARMONY-6122 468 public void test_Collections_swap_IndexOutOfBoundsException() { 469 try { 470 Collections.swap(new ArrayList<Object>(), -1, 3); 471 fail("IOOBE expected"); 472 } catch (IndexOutOfBoundsException e) { 473 } 474 475 List<Object> list = new ArrayList<Object>(); 476 list.add("0"); 477 try { 478 Collections.swap(list, 0, -1); 479 fail("IOOBE expected"); 480 } catch (IndexOutOfBoundsException e) { 481 } 482 483 try { 484 Collections.swap(list, 0, 3); 485 fail("IOOBE expected"); 486 } catch (IndexOutOfBoundsException e) { 487 } 488 489 try { 490 Collections.swap(new ArrayList<Object>(), 3, 3); 491 fail("IOOBE expected"); 492 } catch (IndexOutOfBoundsException e) { 493 } 494 } 495 496 } 497
