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, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.harmony.tests.java.nio; 19 20 import java.io.IOException; 21 import java.nio.BufferOverflowException; 22 import java.nio.BufferUnderflowException; 23 import java.nio.ByteOrder; 24 import java.nio.CharBuffer; 25 import java.nio.InvalidMarkException; 26 import java.nio.ReadOnlyBufferException; 27 28 /** 29 * Tests java.nio.CharBuffer 30 * 31 */ 32 public class CharBufferTest extends AbstractBufferTest { 33 protected static final int SMALL_TEST_LENGTH = 5; 34 35 protected static final int BUFFER_LENGTH = 20; 36 37 protected CharBuffer buf; 38 39 private static char[] chars = "123456789a".toCharArray(); 40 41 protected void setUp() throws Exception{ 42 char[] charscopy = new char[chars.length]; 43 System.arraycopy(chars, 0, charscopy, 0, chars.length); 44 buf = CharBuffer.wrap(charscopy); 45 baseBuf = buf; 46 } 47 48 protected void tearDown() throws Exception{ 49 buf = null; 50 baseBuf = null; 51 } 52 53 public void testArray() { 54 char array[] = buf.array(); 55 assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity()); 56 57 loadTestData1(array, buf.arrayOffset(), buf.capacity()); 58 assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity()); 59 60 loadTestData2(array, buf.arrayOffset(), buf.capacity()); 61 assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity()); 62 63 loadTestData1(buf); 64 assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity()); 65 66 loadTestData2(buf); 67 assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity()); 68 } 69 70 public void testArrayOffset() { 71 char array[] = buf.array(); 72 assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity()); 73 74 loadTestData1(array, buf.arrayOffset(), buf.capacity()); 75 assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity()); 76 77 loadTestData2(array, buf.arrayOffset(), buf.capacity()); 78 assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity()); 79 80 loadTestData1(buf); 81 assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity()); 82 83 loadTestData2(buf); 84 assertContentEquals(buf, array, buf.arrayOffset(), buf.capacity()); 85 } 86 87 public void testAsReadOnlyBuffer() { 88 buf.clear(); 89 buf.mark(); 90 buf.position(buf.limit()); 91 92 // readonly's contents should be the same as buf 93 CharBuffer readonly = buf.asReadOnlyBuffer(); 94 assertNotSame(buf, readonly); 95 assertTrue(readonly.isReadOnly()); 96 assertEquals(buf.position(), readonly.position()); 97 assertEquals(buf.limit(), readonly.limit()); 98 assertEquals(buf.isDirect(), readonly.isDirect()); 99 assertEquals(buf.order(), readonly.order()); 100 assertEquals(buf.capacity(), readonly.capacity()); 101 assertContentEquals(buf, readonly); 102 103 // readonly's position, mark, and limit should be independent to buf 104 readonly.reset(); 105 assertEquals(readonly.position(), 0); 106 readonly.clear(); 107 assertEquals(buf.position(), buf.limit()); 108 buf.reset(); 109 assertEquals(buf.position(), 0); 110 111 buf.clear(); 112 int originalPosition = (buf.position() + buf.limit()) / 2; 113 buf.position(originalPosition); 114 buf.mark(); 115 buf.position(buf.limit()); 116 117 // readonly's contents should be the same as buf 118 readonly = buf.asReadOnlyBuffer(); 119 assertNotSame(buf, readonly); 120 assertTrue(readonly.isReadOnly()); 121 assertEquals(buf.position(), readonly.position()); 122 assertEquals(buf.limit(), readonly.limit()); 123 assertEquals(buf.isDirect(), readonly.isDirect()); 124 assertEquals(buf.order(), readonly.order()); 125 assertEquals(buf.capacity(), readonly.capacity()); 126 assertContentEquals(buf, readonly); 127 128 // readonly's position, mark, and limit should be independent to buf 129 readonly.reset(); 130 assertEquals(readonly.position(), originalPosition); 131 readonly.clear(); 132 assertEquals(buf.position(), buf.limit()); 133 buf.reset(); 134 assertEquals(buf.position(), originalPosition); 135 } 136 137 public void testCompact() { 138 // case: buffer is full 139 buf.clear(); 140 buf.mark(); 141 loadTestData1(buf); 142 CharBuffer ret = buf.compact(); 143 assertSame(ret, buf); 144 assertEquals(buf.position(), buf.capacity()); 145 assertEquals(buf.limit(), buf.capacity()); 146 assertContentLikeTestData1(buf, 0, (char) 0, buf.capacity()); 147 try { 148 buf.reset(); 149 fail("Should throw Exception"); //$NON-NLS-1$ 150 } catch (InvalidMarkException e) { 151 // expected 152 } 153 154 // case: buffer is empty 155 buf.position(0); 156 buf.limit(0); 157 buf.mark(); 158 ret = buf.compact(); 159 assertSame(ret, buf); 160 assertEquals(buf.position(), 0); 161 assertEquals(buf.limit(), buf.capacity()); 162 assertContentLikeTestData1(buf, 0, (char) 0, buf.capacity()); 163 try { 164 buf.reset(); 165 fail("Should throw Exception"); //$NON-NLS-1$ 166 } catch (InvalidMarkException e) { 167 // expected 168 } 169 170 // case: normal 171 assertTrue(buf.capacity() > 5); 172 buf.position(1); 173 buf.limit(5); 174 buf.mark(); 175 ret = buf.compact(); 176 assertSame(ret, buf); 177 assertEquals(buf.position(), 4); 178 assertEquals(buf.limit(), buf.capacity()); 179 assertContentLikeTestData1(buf, 0, (char) 1, 4); 180 try { 181 buf.reset(); 182 fail("Should throw Exception"); //$NON-NLS-1$ 183 } catch (InvalidMarkException e) { 184 // expected 185 } 186 } 187 188 public void testCompareTo() { 189 // compare to self 190 assertEquals(0, buf.compareTo(buf)); 191 192 assertTrue(buf.capacity() > SMALL_TEST_LENGTH); 193 buf.clear(); 194 CharBuffer other = CharBuffer.allocate(buf.capacity()); 195 other.put(buf); 196 other.clear(); 197 buf.clear(); 198 assertEquals(0, buf.compareTo(other)); 199 assertEquals(0, other.compareTo(buf)); 200 buf.position(1); 201 assertTrue(buf.compareTo(other) > 0); 202 assertTrue(other.compareTo(buf) < 0); 203 other.position(2); 204 assertTrue(buf.compareTo(other) < 0); 205 assertTrue(other.compareTo(buf) > 0); 206 buf.position(2); 207 assertTrue(buf.compareTo(other) == 0); 208 assertTrue(other.compareTo(buf) == 0); 209 other.limit(SMALL_TEST_LENGTH); 210 assertTrue(buf.compareTo(other) > 0); 211 assertTrue(other.compareTo(buf) < 0); 212 } 213 214 public void testDuplicate() { 215 // mark the position 0 216 buf.clear(); 217 buf.mark(); 218 buf.position(buf.limit()); 219 220 // duplicate's contents should be the same as buf 221 CharBuffer duplicate = buf.duplicate(); 222 assertNotSame(buf, duplicate); 223 assertEquals(buf.position(), duplicate.position()); 224 assertEquals(buf.limit(), duplicate.limit()); 225 assertEquals(buf.isReadOnly(), duplicate.isReadOnly()); 226 assertEquals(buf.isDirect(), duplicate.isDirect()); 227 assertEquals(buf.order(), duplicate.order()); 228 assertEquals(buf.capacity(), duplicate.capacity()); 229 assertContentEquals(buf, duplicate); 230 231 // duplicate's position, mark, and limit should be independent to 232 // buf 233 duplicate.reset(); 234 assertEquals(duplicate.position(), 0); 235 duplicate.clear(); 236 assertEquals(buf.position(), buf.limit()); 237 buf.reset(); 238 assertEquals(buf.position(), 0); 239 240 // mark another position 241 buf.clear(); 242 int originalPosition = (buf.position() + buf.limit()) / 2; 243 buf.position(originalPosition); 244 buf.mark(); 245 buf.position(buf.limit()); 246 247 // duplicate's contents should be the same as buf 248 duplicate = buf.duplicate(); 249 assertNotSame(buf, duplicate); 250 assertEquals(buf.position(), duplicate.position()); 251 assertEquals(buf.limit(), duplicate.limit()); 252 assertEquals(buf.isReadOnly(), duplicate.isReadOnly()); 253 assertEquals(buf.isDirect(), duplicate.isDirect()); 254 assertEquals(buf.order(), duplicate.order()); 255 assertEquals(buf.capacity(), duplicate.capacity()); 256 assertContentEquals(buf, duplicate); 257 258 // duplicate's position, mark, and limit should be independent to 259 // buf 260 duplicate.reset(); 261 assertEquals(duplicate.position(), originalPosition); 262 duplicate.clear(); 263 assertEquals(buf.position(), buf.limit()); 264 buf.reset(); 265 assertEquals(buf.position(), originalPosition); 266 267 // duplicate share the same content with buf 268 if (!duplicate.isReadOnly()) { 269 loadTestData1(buf); 270 assertContentEquals(buf, duplicate); 271 loadTestData2(duplicate); 272 assertContentEquals(buf, duplicate); 273 } 274 } 275 276 public void testEquals() { 277 // equal to self 278 assertTrue(buf.equals(buf)); 279 CharBuffer readonly = buf.asReadOnlyBuffer(); 280 assertTrue(buf.equals(readonly)); 281 CharBuffer duplicate = buf.duplicate(); 282 assertTrue(buf.equals(duplicate)); 283 284 // always false, if type mismatch 285 assertFalse(buf.equals(Boolean.TRUE)); 286 287 assertTrue(buf.capacity() > 5); 288 289 buf.limit(buf.capacity()).position(0); 290 readonly.limit(readonly.capacity()).position(1); 291 assertFalse(buf.equals(readonly)); 292 293 buf.limit(buf.capacity() - 1).position(0); 294 duplicate.limit(duplicate.capacity()).position(0); 295 assertFalse(buf.equals(duplicate)); 296 } 297 298 /* 299 * Class under test for char get() 300 */ 301 public void testGet() { 302 buf.clear(); 303 for (int i = 0; i < buf.capacity(); i++) { 304 assertEquals(buf.position(), i); 305 assertEquals(buf.get(), buf.get(i)); 306 } 307 try { 308 buf.get(); 309 fail("Should throw Exception"); //$NON-NLS-1$ 310 } catch (BufferUnderflowException e) { 311 // expected 312 } 313 } 314 315 /* 316 * Class under test for java.nio.CharBuffer get(char[]) 317 */ 318 public void testGetcharArray() { 319 char array[] = new char[1]; 320 buf.clear(); 321 for (int i = 0; i < buf.capacity(); i++) { 322 assertEquals(buf.position(), i); 323 CharBuffer ret = buf.get(array); 324 assertEquals(array[0], buf.get(i)); 325 assertSame(ret, buf); 326 } 327 try { 328 buf.get(array); 329 fail("Should throw Exception"); //$NON-NLS-1$ 330 } catch (BufferUnderflowException e) { 331 // expected 332 } 333 } 334 335 /* 336 * Class under test for java.nio.CharBuffer get(char[], int, int) 337 */ 338 public void testGetcharArrayintint() { 339 buf.clear(); 340 char array[] = new char[buf.capacity()]; 341 342 try { 343 buf.get(new char[buf.capacity() + 1], 0, buf.capacity() + 1); 344 fail("Should throw Exception"); //$NON-NLS-1$ 345 } catch (BufferUnderflowException e) { 346 // expected 347 } 348 assertEquals(buf.position(), 0); 349 try { 350 buf.get(array, -1, array.length); 351 fail("Should throw Exception"); //$NON-NLS-1$ 352 } catch (IndexOutOfBoundsException e) { 353 // expected 354 } 355 buf.get(array, array.length, 0); 356 try { 357 buf.get(array, array.length + 1, 1); 358 fail("Should throw Exception"); //$NON-NLS-1$ 359 } catch (IndexOutOfBoundsException e) { 360 // expected 361 } 362 assertEquals(buf.position(), 0); 363 try { 364 buf.get(array, 2, -1); 365 fail("Should throw Exception"); //$NON-NLS-1$ 366 } catch (IndexOutOfBoundsException e) { 367 // expected 368 } 369 try { 370 buf.get((char[])null, 2, -1); 371 fail("Should throw Exception"); //$NON-NLS-1$ 372 } catch (NullPointerException e) { 373 // expected 374 } 375 try { 376 buf.get(array, 2, array.length); 377 fail("Should throw Exception"); //$NON-NLS-1$ 378 } catch (IndexOutOfBoundsException e) { 379 // expected 380 } 381 try { 382 buf.get(array, 1, Integer.MAX_VALUE); 383 fail("Should throw Exception"); //$NON-NLS-1$ 384 } catch (BufferUnderflowException expected) { 385 } catch (IndexOutOfBoundsException expected) { 386 } 387 try { 388 buf.get(array, Integer.MAX_VALUE, 1); 389 fail("Should throw Exception"); //$NON-NLS-1$ 390 } catch (IndexOutOfBoundsException e) { 391 // expected 392 } 393 assertEquals(buf.position(), 0); 394 395 buf.clear(); 396 CharBuffer ret = buf.get(array, 0, array.length); 397 assertEquals(buf.position(), buf.capacity()); 398 assertContentEquals(buf, array, 0, array.length); 399 assertSame(ret, buf); 400 } 401 402 /* 403 * Class under test for char get(int) 404 */ 405 public void testGetint() { 406 buf.clear(); 407 for (int i = 0; i < buf.capacity(); i++) { 408 assertEquals(buf.position(), i); 409 assertEquals(buf.get(), buf.get(i)); 410 } 411 try { 412 buf.get(-1); 413 fail("Should throw Exception"); //$NON-NLS-1$ 414 } catch (IndexOutOfBoundsException e) { 415 // expected 416 } 417 try { 418 buf.get(buf.limit()); 419 fail("Should throw Exception"); //$NON-NLS-1$ 420 } catch (IndexOutOfBoundsException e) { 421 // expected 422 } 423 } 424 425 public void testHashCode() { 426 buf.clear(); 427 loadTestData1(buf); 428 CharBuffer readonly = buf.asReadOnlyBuffer(); 429 CharBuffer duplicate = buf.duplicate(); 430 assertTrue(buf.hashCode() == readonly.hashCode()); 431 assertTrue(buf.capacity() > SMALL_TEST_LENGTH); 432 duplicate.position(buf.capacity() / 2); 433 assertTrue(buf.hashCode() != duplicate.hashCode()); 434 } 435 436 /* 437 * Class under test for java.nio.CharBuffer put(char) 438 */ 439 public void testPutchar() { 440 buf.clear(); 441 for (int i = 0; i < buf.capacity(); i++) { 442 assertEquals(buf.position(), i); 443 CharBuffer ret = buf.put((char) i); 444 assertEquals(buf.get(i), (char) i); 445 assertSame(ret, buf); 446 } 447 try { 448 buf.put((char) 0); 449 fail("Should throw Exception"); //$NON-NLS-1$ 450 } catch (BufferOverflowException e) { 451 // expected 452 } 453 } 454 455 /* 456 * Class under test for java.nio.CharBuffer put(char[]) 457 */ 458 public void testPutcharArray() { 459 char array[] = new char[1]; 460 461 buf.clear(); 462 for (int i = 0; i < buf.capacity(); i++) { 463 assertEquals(buf.position(), i); 464 array[0] = (char) i; 465 CharBuffer ret = buf.put(array); 466 assertEquals(buf.get(i), (char) i); 467 assertSame(ret, buf); 468 } 469 try { 470 buf.put(array); 471 fail("Should throw Exception"); //$NON-NLS-1$ 472 } catch (BufferOverflowException e) { 473 // expected 474 } 475 try { 476 buf.put((char[]) null); 477 fail("Should throw Exception"); //$NON-NLS-1$ 478 } catch (NullPointerException e) { 479 // expected 480 } 481 } 482 483 /* 484 * Class under test for java.nio.CharBuffer put(char[], int, int) 485 */ 486 public void testPutcharArrayintint() { 487 buf.clear(); 488 char array[] = new char[buf.capacity()]; 489 try { 490 buf.put((char[]) null, 0, 1); 491 fail("Should throw NullPointerException"); //$NON-NLS-1$ 492 } catch (NullPointerException e) { 493 // expected 494 } 495 try { 496 buf.put(new char[buf.capacity() + 1], 0, buf.capacity() + 1); 497 fail("Should throw Exception"); //$NON-NLS-1$ 498 } catch (BufferOverflowException e) { 499 // expected 500 } 501 assertEquals(buf.position(), 0); 502 try { 503 buf.put(array, -1, array.length); 504 fail("Should throw Exception"); //$NON-NLS-1$ 505 } catch (IndexOutOfBoundsException e) { 506 // expected 507 } 508 try { 509 buf.put(array, array.length + 1, 0); 510 fail("Should throw Exception"); //$NON-NLS-1$ 511 } catch (IndexOutOfBoundsException e) { 512 // expected 513 } 514 buf.put(array, array.length, 0); 515 assertEquals(buf.position(), 0); 516 try { 517 buf.put(array, 0, -1); 518 fail("Should throw Exception"); //$NON-NLS-1$ 519 } catch (IndexOutOfBoundsException e) { 520 // expected 521 } 522 try { 523 buf.put((char[])null, 0, -1); 524 fail("Should throw Exception"); //$NON-NLS-1$ 525 } catch (NullPointerException e) { 526 // expected 527 } 528 try { 529 buf.put(array, 2, array.length); 530 fail("Should throw Exception"); //$NON-NLS-1$ 531 } catch (IndexOutOfBoundsException e) { 532 // expected 533 } 534 try { 535 buf.put(array, Integer.MAX_VALUE, 1); 536 fail("Should throw Exception"); //$NON-NLS-1$ 537 } catch (IndexOutOfBoundsException e) { 538 // expected 539 } 540 try { 541 buf.put(array, 1, Integer.MAX_VALUE); 542 fail("Should throw Exception"); //$NON-NLS-1$ 543 } catch (BufferOverflowException expected) { 544 } catch (IndexOutOfBoundsException expected) { 545 } 546 assertEquals(buf.position(), 0); 547 548 loadTestData2(array, 0, array.length); 549 CharBuffer ret = buf.put(array, 0, array.length); 550 assertEquals(buf.position(), buf.capacity()); 551 assertContentEquals(buf, array, 0, array.length); 552 assertSame(ret, buf); 553 } 554 555 /* 556 * Class under test for java.nio.CharBuffer put(java.nio.CharBuffer) 557 */ 558 public void testPutCharBuffer() { 559 CharBuffer other = CharBuffer.allocate(buf.capacity()); 560 561 try { 562 buf.put((CharBuffer) null); 563 fail("Should throw Exception"); //$NON-NLS-1$ 564 } catch (NullPointerException e) { 565 // expected 566 } 567 try { 568 buf.put(buf); 569 fail("Should throw Exception"); //$NON-NLS-1$ 570 } catch (IllegalArgumentException e) { 571 // expected 572 } 573 try { 574 buf.put(CharBuffer.allocate(buf.capacity() + 1)); 575 fail("Should throw Exception"); //$NON-NLS-1$ 576 } catch (BufferOverflowException e) { 577 // expected 578 } 579 try { 580 buf.flip(); 581 buf.put((CharBuffer)null); 582 fail("Should throw Exception"); //$NON-NLS-1$ 583 } catch (NullPointerException e) { 584 // expected 585 } 586 587 loadTestData2(other); 588 other.clear(); 589 buf.clear(); 590 CharBuffer ret = buf.put(other); 591 assertEquals(other.position(), other.capacity()); 592 assertEquals(buf.position(), buf.capacity()); 593 assertContentEquals(other, buf); 594 assertSame(ret, buf); 595 } 596 597 /* 598 * Class under test for java.nio.CharBuffer put(int, char) 599 */ 600 public void testPutintchar() { 601 buf.clear(); 602 for (int i = 0; i < buf.capacity(); i++) { 603 assertEquals(buf.position(), 0); 604 CharBuffer ret = buf.put(i, (char) i); 605 assertEquals(buf.get(i), (char) i); 606 assertSame(ret, buf); 607 } 608 try { 609 buf.put(-1, (char) 0); 610 fail("Should throw Exception"); //$NON-NLS-1$ 611 } catch (IndexOutOfBoundsException e) { 612 // expected 613 } 614 try { 615 buf.put(buf.limit(), (char) 0); 616 fail("Should throw Exception"); //$NON-NLS-1$ 617 } catch (IndexOutOfBoundsException e) { 618 // expected 619 } 620 } 621 622 public void testSlice() { 623 assertTrue(buf.capacity() > 5); 624 buf.position(1); 625 buf.limit(buf.capacity() - 1); 626 627 CharBuffer slice = buf.slice(); 628 assertEquals(buf.isReadOnly(), slice.isReadOnly()); 629 assertEquals(buf.isDirect(), slice.isDirect()); 630 assertEquals(buf.order(), slice.order()); 631 assertEquals(slice.position(), 0); 632 assertEquals(slice.limit(), buf.remaining()); 633 assertEquals(slice.capacity(), buf.remaining()); 634 try { 635 slice.reset(); 636 fail("Should throw Exception"); //$NON-NLS-1$ 637 } catch (InvalidMarkException e) { 638 // expected 639 } 640 641 // slice share the same content with buf 642 if (!slice.isReadOnly()) { 643 loadTestData1(slice); 644 assertContentLikeTestData1(buf, 1, (char) 0, slice.capacity()); 645 buf.put(2, (char) 500); 646 assertEquals(slice.get(1), 500); 647 } 648 } 649 650 public void testToString() { 651 String expected = ""; 652 for (int i = buf.position(); i < buf.limit(); i++) { 653 expected += buf.get(i); 654 } 655 String str = buf.toString(); 656 assertEquals(expected, str); 657 } 658 659 public void testCharAt() { 660 for (int i = 0; i < buf.remaining(); i++) { 661 assertEquals(buf.get(buf.position() + i), buf.charAt(i)); 662 } 663 try { 664 buf.charAt(-1); 665 fail("Should throw Exception"); //$NON-NLS-1$ 666 } catch (IndexOutOfBoundsException e) { 667 // expected 668 } 669 try { 670 buf.charAt(buf.remaining()); 671 fail("Should throw Exception"); //$NON-NLS-1$ 672 } catch (IndexOutOfBoundsException e) { 673 // expected 674 } 675 } 676 677 public void testLength() { 678 assertEquals(buf.length(), buf.remaining()); 679 } 680 681 public void testSubSequence() { 682 try { 683 buf.subSequence(-1, buf.length()); 684 fail("Should throw Exception"); //$NON-NLS-1$ 685 } catch (IndexOutOfBoundsException e) { 686 // expected 687 } 688 try { 689 buf.subSequence(buf.length() + 1, buf.length() + 1); 690 fail("Should throw Exception"); //$NON-NLS-1$ 691 } catch (IndexOutOfBoundsException e) { 692 // expected 693 } 694 assertEquals(buf.subSequence(buf.length(), buf.length()).length(), 0); 695 try { 696 buf.subSequence(1, 0); 697 fail("Should throw Exception"); //$NON-NLS-1$ 698 } catch (IndexOutOfBoundsException e) { 699 // expected 700 } 701 try { 702 buf.subSequence(1, buf.length() + 1); 703 fail("Should throw Exception"); //$NON-NLS-1$ 704 } catch (IndexOutOfBoundsException e) { 705 // expected 706 } 707 708 assertEquals(buf.subSequence(0, buf.length()).toString(), buf 709 .toString()); 710 711 if (buf.length() >= 2) { 712 assertEquals(buf.subSequence(1, buf.length() - 1).toString(), buf 713 .toString().substring(1, buf.length() - 1)); 714 } 715 } 716 717 public void testPutString() { 718 String str = " "; 719 720 buf.clear(); 721 for (int i = 0; i < buf.capacity(); i++) { 722 assertEquals(buf.position(), i); 723 str = "" + (char) i; 724 CharBuffer ret = buf.put(str); 725 assertEquals(buf.get(i), (char) i); 726 assertSame(ret, buf); 727 } 728 try { 729 buf.put(str); 730 fail("Should throw Exception"); //$NON-NLS-1$ 731 } catch (BufferOverflowException e) { 732 // expected 733 } 734 try { 735 buf.put((String) null); 736 fail("Should throw Exception"); //$NON-NLS-1$ 737 } catch (NullPointerException e) { 738 // expected 739 } 740 } 741 742 public void testPutStringintint() { 743 buf.clear(); 744 String str = String.valueOf(new char[buf.capacity()]); 745 746 // Throw a BufferOverflowException and no character is transfered to 747 // CharBuffer 748 try { 749 buf.put(String.valueOf(new char[buf.capacity() + 1]), 0, buf 750 .capacity() + 1); 751 fail("Should throw Exception"); //$NON-NLS-1$ 752 } catch (BufferOverflowException e) { 753 // expected 754 } 755 try { 756 buf.put((String) null, 0, buf.capacity() + 1); 757 fail("Should throw Exception"); //$NON-NLS-1$ 758 } catch (NullPointerException e) { 759 // expected 760 } 761 assertEquals(0, buf.position()); 762 763 buf.clear(); 764 try { 765 buf.put(str, -1, str.length()); 766 fail("Should throw Exception"); //$NON-NLS-1$ 767 } catch (IndexOutOfBoundsException e) { 768 // expected 769 } 770 try { 771 buf.put(str, str.length() + 1, str.length() + 2); 772 fail("Should throw Exception"); //$NON-NLS-1$ 773 } catch (IndexOutOfBoundsException e) { 774 // expected 775 } 776 try { 777 buf.put((String) null, -1, 0); 778 fail("Should throw Exception"); //$NON-NLS-1$ 779 } catch (NullPointerException e) { 780 // expected 781 } 782 buf.put(str, str.length(), str.length()); 783 assertEquals(buf.position(), 0); 784 try { 785 buf.put(str, 2, 1); 786 fail("Should throw Exception"); //$NON-NLS-1$ 787 } catch (IndexOutOfBoundsException e) { 788 // expected 789 } 790 try { 791 buf.put(str, 2, str.length() + 1); 792 fail("Should throw Exception"); //$NON-NLS-1$ 793 } catch (IndexOutOfBoundsException e) { 794 // expected 795 } 796 assertEquals(buf.position(), 0); 797 798 char array[] = new char[buf.capacity()]; 799 loadTestData2(array, 0, array.length); 800 str = String.valueOf(array); 801 802 CharBuffer ret = buf.put(str, 0, str.length()); 803 assertEquals(buf.position(), buf.capacity()); 804 assertContentEquals(buf, str.toCharArray(), 0, str.length()); 805 assertSame(ret, buf); 806 } 807 808 void loadTestData1(char array[], int offset, int length) { 809 for (int i = 0; i < length; i++) { 810 array[offset + i] = (char) i; 811 } 812 } 813 814 void loadTestData2(char array[], int offset, int length) { 815 for (int i = 0; i < length; i++) { 816 array[offset + i] = (char) (length - i); 817 } 818 } 819 820 void loadTestData1(CharBuffer buf) { 821 buf.clear(); 822 for (int i = 0; i < buf.capacity(); i++) { 823 buf.put(i, (char) i); 824 } 825 } 826 827 void loadTestData2(CharBuffer buf) { 828 buf.clear(); 829 for (int i = 0; i < buf.capacity(); i++) { 830 buf.put(i, (char) (buf.capacity() - i)); 831 } 832 } 833 834 private void assertContentEquals(CharBuffer buf, char array[], int offset, 835 int length) { 836 for (int i = 0; i < length; i++) { 837 assertEquals(buf.get(i), array[offset + i]); 838 } 839 } 840 841 private void assertContentEquals(CharBuffer buf, CharBuffer other) { 842 assertEquals(buf.capacity(), other.capacity()); 843 for (int i = 0; i < buf.capacity(); i++) { 844 assertEquals(buf.get(i), other.get(i)); 845 } 846 } 847 848 private void assertContentLikeTestData1(CharBuffer buf, int startIndex, 849 char startValue, int length) { 850 char value = startValue; 851 for (int i = 0; i < length; i++) { 852 assertEquals(buf.get(startIndex + i), value); 853 value = (char) (value + 1); 854 } 855 } 856 857 public void testAppendSelf() throws Exception { 858 CharBuffer cb = CharBuffer.allocate(10); 859 CharBuffer cb2 = cb.duplicate(); 860 cb.append(cb); 861 assertEquals(10, cb.position()); 862 cb.clear(); 863 assertEquals(cb2, cb); 864 865 cb.put("abc"); 866 cb2 = cb.duplicate(); 867 cb.append(cb); 868 assertEquals(10, cb.position()); 869 cb.clear(); 870 cb2.clear(); 871 assertEquals(cb2, cb); 872 873 cb.put("edfg"); 874 cb.clear(); 875 cb2 = cb.duplicate(); 876 cb.append(cb); 877 assertEquals(10, cb.position()); 878 cb.clear(); 879 cb2.clear(); 880 assertEquals(cb, cb2); 881 } 882 883 public void testAppendOverFlow() throws IOException { 884 CharBuffer cb = CharBuffer.allocate(1); 885 CharSequence cs = "String"; 886 cb.put('A'); 887 try { 888 cb.append('C'); 889 fail("should throw BufferOverflowException."); 890 } catch (BufferOverflowException ex) { 891 // expected; 892 } 893 try { 894 cb.append(cs); 895 fail("should throw BufferOverflowException."); 896 } catch (BufferOverflowException ex) { 897 // expected; 898 } 899 try { 900 cb.append(cs, 1, 2); 901 fail("should throw BufferOverflowException."); 902 } catch (BufferOverflowException ex) { 903 // expected; 904 } 905 } 906 907 public void testReadOnlyMap() throws IOException { 908 CharBuffer cb = CharBuffer.wrap("ABCDE").asReadOnlyBuffer(); 909 CharSequence cs = "String"; 910 try { 911 cb.append('A'); 912 fail("should throw ReadOnlyBufferException."); 913 } catch (ReadOnlyBufferException ex) { 914 // expected; 915 } 916 try { 917 cb.append(cs); 918 fail("should throw ReadOnlyBufferException."); 919 } catch (ReadOnlyBufferException ex) { 920 // expected; 921 } 922 try { 923 cb.append(cs, 1, 2); 924 fail("should throw ReadOnlyBufferException."); 925 } catch (ReadOnlyBufferException ex) { 926 // expected; 927 } 928 cb.append(cs, 1, 1); 929 } 930 931 public void testAppendCNormal() throws IOException { 932 CharBuffer cb = CharBuffer.allocate(2); 933 cb.put('A'); 934 assertSame(cb, cb.append('B')); 935 assertEquals('B', cb.get(1)); 936 } 937 938 public void testAppendCharSequenceNormal() throws IOException { 939 CharBuffer cb = CharBuffer.allocate(10); 940 cb.put('A'); 941 assertSame(cb, cb.append("String")); 942 assertEquals("AString", cb.flip().toString()); 943 cb.append(null); 944 assertEquals("null", cb.flip().toString()); 945 } 946 947 public void testAppendCharSequenceIINormal() throws IOException { 948 CharBuffer cb = CharBuffer.allocate(10); 949 cb.put('A'); 950 assertSame(cb, cb.append("String", 1, 3)); 951 assertEquals("Atr", cb.flip().toString()); 952 953 cb.append(null, 0, 1); 954 assertEquals("n", cb.flip().toString()); 955 } 956 957 public void testAppendCharSequenceII_IllegalArgument() throws IOException { 958 CharBuffer cb = CharBuffer.allocate(10); 959 cb.append("String", 0, 0); 960 cb.append("String", 2, 2); 961 try { 962 cb.append("String", -1, 1); 963 fail("should throw IndexOutOfBoundsException."); 964 } catch (IndexOutOfBoundsException ex) { 965 // expected; 966 } 967 try { 968 cb.append("String", -1, -1); 969 fail("should throw IndexOutOfBoundsException."); 970 } catch (IndexOutOfBoundsException ex) { 971 // expected; 972 } 973 try { 974 cb.append("String", 3, 2); 975 fail("should throw IndexOutOfBoundsException."); 976 } catch (IndexOutOfBoundsException ex) { 977 // expected; 978 } 979 try { 980 cb.append("String", 3, 0); 981 fail("should throw IndexOutOfBoundsException."); 982 } catch (IndexOutOfBoundsException ex) { 983 // expected; 984 } 985 try { 986 cb.append("String", 3, 110); 987 fail("should throw IndexOutOfBoundsException."); 988 } catch (IndexOutOfBoundsException ex) { 989 // expected; 990 } 991 } 992 993 public void testReadCharBuffer() throws IOException { 994 CharBuffer source = CharBuffer.wrap("String"); 995 CharBuffer target = CharBuffer.allocate(10); 996 assertEquals(6, source.read(target)); 997 assertEquals("String", target.flip().toString()); 998 // return -1 when nothing to read 999 assertEquals(-1, source.read(target)); 1000 // NullPointerException 1001 try { 1002 assertEquals(-1, source.read(null)); 1003 fail("should throw NullPointerException."); 1004 } catch (NullPointerException ex) { 1005 // expected; 1006 } 1007 1008 } 1009 1010 public void testReadReadOnly() throws IOException { 1011 CharBuffer source = CharBuffer.wrap("String"); 1012 CharBuffer target = CharBuffer.allocate(10).asReadOnlyBuffer(); 1013 try { 1014 source.read(target); 1015 fail("should throw ReadOnlyBufferException."); 1016 } catch (ReadOnlyBufferException ex) { 1017 // expected; 1018 } 1019 // if target has no remaining, needn't to check the isReadOnly 1020 target.flip(); 1021 assertEquals(0, source.read(target)); 1022 } 1023 1024 public void testReadOverflow() throws IOException { 1025 CharBuffer source = CharBuffer.wrap("String"); 1026 CharBuffer target = CharBuffer.allocate(1); 1027 assertEquals(1, source.read(target)); 1028 assertEquals("S", target.flip().toString()); 1029 assertEquals(1, source.position()); 1030 } 1031 1032 public void testReadSelf() throws Exception { 1033 CharBuffer source = CharBuffer.wrap("abuffer"); 1034 try { 1035 source.read(source); 1036 fail("should throw IAE."); 1037 } catch (IllegalArgumentException e) { 1038 //expected 1039 } 1040 } 1041 1042 public void testRead_scenario1() throws Exception { 1043 char[] charArray = new char[] { 'a', 'b' }; 1044 CharBuffer charBuffer = CharBuffer.wrap(charArray); 1045 try { 1046 charBuffer.read(charBuffer); 1047 fail("should throw IllegalArgumentException"); 1048 } catch (IllegalArgumentException e) { 1049 // expected 1050 } 1051 charBuffer.put(charArray); 1052 assertEquals(-1, charBuffer.read(charBuffer)); 1053 } 1054 1055 public void testRead_scenario2() throws Exception { 1056 CharBuffer charBufferA = CharBuffer.allocate(0); 1057 CharBuffer allocateBuffer = CharBuffer.allocate(1); 1058 CharBuffer charBufferB = CharBuffer.wrap(allocateBuffer); 1059 assertEquals(-1, charBufferA.read(charBufferB)); 1060 1061 allocateBuffer.append(allocateBuffer); 1062 charBufferB = CharBuffer.wrap(allocateBuffer); 1063 assertEquals(-1, charBufferA.read(charBufferB)); 1064 } 1065 1066 public void testIsDirect() { 1067 assertFalse(buf.isDirect()); 1068 } 1069 1070 public void testHasArray() { 1071 assertTrue(buf.hasArray()); 1072 } 1073 1074 public void testOrder() { 1075 assertEquals(ByteOrder.nativeOrder(), buf.order()); 1076 } 1077 1078 public void testIsReadOnly() { 1079 assertFalse(buf.isReadOnly()); 1080 } 1081 } 1082
