1/* 2 * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* Type-specific source code for unit test 25 * 26 * Regenerate the BasicX classes via genBasic.sh whenever this file changes. 27 * We check in the generated source files so that the test tree can be used 28 * independently of the rest of the source tree. 29 */ 30 31// -- This file was mechanically generated: Do not edit! -- // 32 33import java.nio.*; 34 35 36public class BasicByte 37 extends Basic 38{ 39 40 private static final byte[] VALUES = { 41 Byte.MIN_VALUE, 42 (byte) -1, 43 (byte) 0, 44 (byte) 1, 45 Byte.MAX_VALUE, 46 47 48 49 50 51 52 53 54 55 56 57 58 }; 59 60 private static void relGet(ByteBuffer b) { 61 int n = b.capacity(); 62 for (int i = 0; i < n; i++) 63 ck(b, (long)b.get(), (long)((byte)ic(i))); 64 b.rewind(); 65 } 66 67 private static void relGet(ByteBuffer b, int start) { 68 int n = b.remaining(); 69 for (int i = start; i < n; i++) 70 ck(b, (long)b.get(), (long)((byte)ic(i))); 71 b.rewind(); 72 } 73 74 private static void absGet(ByteBuffer b) { 75 int n = b.capacity(); 76 for (int i = 0; i < n; i++) 77 ck(b, (long)b.get(), (long)((byte)ic(i))); 78 b.rewind(); 79 } 80 81 private static void bulkGet(ByteBuffer b) { 82 int n = b.capacity(); 83 byte[] a = new byte[n + 7]; 84 b.get(a, 7, n); 85 for (int i = 0; i < n; i++) { 86 ck(b, (long)a[i + 7], (long)((byte)ic(i))); 87 } 88 } 89 90 private static void relPut(ByteBuffer b) { 91 int n = b.capacity(); 92 b.clear(); 93 for (int i = 0; i < n; i++) 94 b.put((byte)ic(i)); 95 b.flip(); 96 } 97 98 private static void absPut(ByteBuffer b) { 99 int n = b.capacity(); 100 b.clear(); 101 for (int i = 0; i < n; i++) 102 b.put(i, (byte)ic(i)); 103 b.limit(n); 104 b.position(0); 105 } 106 107 private static void bulkPutArray(ByteBuffer b) { 108 int n = b.capacity(); 109 b.clear(); 110 byte[] a = new byte[n + 7]; 111 for (int i = 0; i < n; i++) 112 a[i + 7] = (byte)ic(i); 113 b.put(a, 7, n); 114 b.flip(); 115 } 116 117 private static void bulkPutBuffer(ByteBuffer b) { 118 int n = b.capacity(); 119 b.clear(); 120 ByteBuffer c = ByteBuffer.allocate(n + 7); 121 c.position(7); 122 for (int i = 0; i < n; i++) 123 c.put((byte)ic(i)); 124 c.flip(); 125 c.position(7); 126 b.put(c); 127 b.flip(); 128 try { 129 b.put(b); 130 fail("IllegalArgumentException expected for put into same buffer"); 131 } catch (IllegalArgumentException e) { 132 if (e.getMessage() == null) { 133 fail("Non-null IllegalArgumentException message expected from" 134 + " put into same buffer"); 135 } 136 } 137 } 138 139 //6231529 140 private static void callReset(ByteBuffer b) { 141 b.position(0); 142 b.mark(); 143 144 b.duplicate().reset(); 145 b.asReadOnlyBuffer().reset(); 146 } 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 private static void checkSlice(ByteBuffer b, ByteBuffer slice) { 189 ck(slice, 0, slice.position()); 190 ck(slice, b.remaining(), slice.limit()); 191 ck(slice, b.remaining(), slice.capacity()); 192 if (b.isDirect() != slice.isDirect()) 193 fail("Lost direction", slice); 194 if (b.isReadOnly() != slice.isReadOnly()) 195 fail("Lost read-only", slice); 196 } 197 198 199 200 private static void checkBytes(ByteBuffer b, byte[] bs) { 201 int n = bs.length; 202 int p = b.position(); 203 if (b.order() == ByteOrder.BIG_ENDIAN) { 204 for (int i = 0; i < n; i++) { 205 ck(b, b.get(), bs[i]); 206 } 207 } else { 208 for (int i = n - 1; i >= 0; i--) { 209 ck(b, b.get(), bs[i]); 210 } 211 } 212 b.position(p); 213 } 214 215 private static void compact(Buffer b) { 216 try { 217 Class<?> cl = b.getClass(); 218 java.lang.reflect.Method m = cl.getDeclaredMethod("compact"); 219 m.setAccessible(true); 220 m.invoke(b); 221 } catch (Exception e) { 222 fail(e.getMessage(), b); 223 } 224 } 225 226 private static void checkInvalidMarkException(final Buffer b) { 227 tryCatch(b, InvalidMarkException.class, () -> { 228 b.mark(); 229 compact(b); 230 b.reset(); 231 }); 232 } 233 234 private static void testViews(int level, ByteBuffer b, boolean direct) { 235 236 ShortBuffer sb = b.asShortBuffer(); 237 BasicShort.test(level, sb, direct); 238 checkBytes(b, new byte[] { 0, (byte)ic(0) }); 239 checkInvalidMarkException(sb); 240 241 CharBuffer cb = b.asCharBuffer(); 242 BasicChar.test(level, cb, direct); 243 checkBytes(b, new byte[] { 0, (byte)ic(0) }); 244 checkInvalidMarkException(cb); 245 246 IntBuffer ib = b.asIntBuffer(); 247 BasicInt.test(level, ib, direct); 248 checkBytes(b, new byte[] { 0, 0, 0, (byte)ic(0) }); 249 checkInvalidMarkException(ib); 250 251 LongBuffer lb = b.asLongBuffer(); 252 BasicLong.test(level, lb, direct); 253 checkBytes(b, new byte[] { 0, 0, 0, 0, 0, 0, 0, (byte)ic(0) }); 254 checkInvalidMarkException(lb); 255 256 FloatBuffer fb = b.asFloatBuffer(); 257 BasicFloat.test(level, fb, direct); 258 checkBytes(b, new byte[] { 0x42, (byte)0xc2, 0, 0 }); 259 checkInvalidMarkException(fb); 260 261 DoubleBuffer db = b.asDoubleBuffer(); 262 BasicDouble.test(level, db, direct); 263 checkBytes(b, new byte[] { 0x40, 0x58, 0x40, 0, 0, 0, 0, 0 }); 264 checkInvalidMarkException(db); 265 } 266 267 private static void testHet(int level, ByteBuffer b) { 268 269 int p = b.position(); 270 b.limit(b.capacity()); 271 show(level, b); 272 out.print(" put:"); 273 274 b.putChar((char)1); 275 b.putChar((char)Character.MAX_VALUE); 276 out.print(" char"); 277 278 b.putShort((short)1); 279 b.putShort((short)Short.MAX_VALUE); 280 out.print(" short"); 281 282 b.putInt(1); 283 b.putInt(Integer.MAX_VALUE); 284 out.print(" int"); 285 286 b.putLong((long)1); 287 b.putLong((long)Long.MAX_VALUE); 288 out.print(" long"); 289 290 b.putFloat((float)1); 291 b.putFloat((float)Float.MIN_VALUE); 292 b.putFloat((float)Float.MAX_VALUE); 293 out.print(" float"); 294 295 b.putDouble((double)1); 296 b.putDouble((double)Double.MIN_VALUE); 297 b.putDouble((double)Double.MAX_VALUE); 298 out.print(" double"); 299 300 out.println(); 301 b.limit(b.position()); 302 b.position(p); 303 show(level, b); 304 out.print(" get:"); 305 306 ck(b, b.getChar(), 1); 307 ck(b, b.getChar(), Character.MAX_VALUE); 308 out.print(" char"); 309 310 ck(b, b.getShort(), 1); 311 ck(b, b.getShort(), Short.MAX_VALUE); 312 out.print(" short"); 313 314 ck(b, b.getInt(), 1); 315 ck(b, b.getInt(), Integer.MAX_VALUE); 316 out.print(" int"); 317 318 ck(b, b.getLong(), 1); 319 ck(b, b.getLong(), Long.MAX_VALUE); 320 out.print(" long"); 321 322 ck(b, (long)b.getFloat(), 1); 323 ck(b, (long)b.getFloat(), (long)Float.MIN_VALUE); 324 ck(b, (long)b.getFloat(), (long)Float.MAX_VALUE); 325 out.print(" float"); 326 327 ck(b, (long)b.getDouble(), 1); 328 ck(b, (long)b.getDouble(), (long)Double.MIN_VALUE); 329 ck(b, (long)b.getDouble(), (long)Double.MAX_VALUE); 330 out.print(" double"); 331 332 out.println(); 333 334 } 335 336 private static void testAlign(final ByteBuffer b, boolean direct) { 337 // index out-of bounds 338 catchIllegalArgument(b, () -> b.alignmentOffset(-1, (short) 1)); 339 340 // unit size values 341 catchIllegalArgument(b, () -> b.alignmentOffset(0, (short) 0)); 342 for (int us = 1; us < 65; us++) { 343 int _us = us; 344 if ((us & (us - 1)) != 0) { 345 // unit size not a power of two 346 catchIllegalArgument(b, () -> b.alignmentOffset(0, _us)); 347 } else { 348 if (direct || us <= 8) { 349 b.alignmentOffset(0, us); 350 } else { 351 // unit size > 8 with non-direct buffer 352 tryCatch(b, UnsupportedOperationException.class, 353 () -> b.alignmentOffset(0, _us)); 354 } 355 } 356 } 357 358 // Probe for long misalignment at index zero for a newly created buffer 359 ByteBuffer empty = 360 direct ? ByteBuffer.allocateDirect(0) : ByteBuffer.allocate(0); 361 int longMisalignmentAtZero = empty.alignmentOffset(0, 8); 362 363 if (direct) { 364 // Freshly created direct byte buffers should be aligned at index 0 365 // for ref and primitive values (see Unsafe.allocateMemory) 366 if (longMisalignmentAtZero != 0) { 367 fail("Direct byte buffer misaligned at index 0" 368 + " for ref and primitive values " 369 + longMisalignmentAtZero); 370 } 371 } else { 372 // For heap byte buffers misalignment may occur on 32-bit systems 373 // where Unsafe.ARRAY_BYTE_BASE_OFFSET % 8 == 4 and not 0 374 // Note the GC will preserve alignment of the base address of the 375 // array 376 if (jdk.internal.misc.Unsafe.ARRAY_BYTE_BASE_OFFSET % 8 377 != longMisalignmentAtZero) { 378 fail("Heap byte buffer misaligned at index 0" 379 + " for ref and primitive values " 380 + longMisalignmentAtZero); 381 } 382 } 383 384 // Ensure test buffer is correctly aligned at index 0 385 if (b.alignmentOffset(0, 8) != longMisalignmentAtZero) 386 fail("Test input buffer not correctly aligned at index 0", b); 387 388 // Test misalignment values 389 for (int us : new int[]{1, 2, 4, 8}) { 390 for (int i = 0; i < us * 2; i++) { 391 int am = b.alignmentOffset(i, us); 392 int expectedAm = (longMisalignmentAtZero + i) % us; 393 394 if (am != expectedAm) { 395 String f = "b.alignmentOffset(%d, %d) == %d incorrect, expected %d"; 396 fail(String.format(f, i, us, am, expectedAm)); 397 } 398 } 399 } 400 401 // Created aligned slice to test against 402 int ap = 8 - longMisalignmentAtZero; 403 int al = b.limit() - b.alignmentOffset(b.limit(), 8); 404 ByteBuffer ab = b.position(ap).limit(al). 405 slice(); 406 if (ab.limit() == 0) { 407 fail("Test input buffer not sufficiently sized to cover" + 408 " an aligned region for all values", b); 409 } 410 if (ab.alignmentOffset(0, 8) != 0) 411 fail("Aligned test input buffer not correctly aligned at index 0", ab); 412 413 for (int us : new int[]{1, 2, 4, 8}) { 414 for (int p = 1; p < 16; p++) { 415 int l = ab.limit() - p; 416 417 ByteBuffer as = ab.slice().position(p).limit(l). 418 alignedSlice(us); 419 420 ck(as, 0, as.position()); 421 ck(as, as.capacity(), as.limit()); 422 if (b.isDirect() != as.isDirect()) 423 fail("Lost direction", as); 424 if (b.isReadOnly() != as.isReadOnly()) 425 fail("Lost read-only", as); 426 427 if (as.alignmentOffset(0, us) != 0) 428 fail("Buffer not correctly aligned at index 0", as); 429 430 if (as.alignmentOffset(as.limit(), us) != 0) 431 fail("Buffer not correctly aligned at limit", as); 432 433 int p_mod = ab.alignmentOffset(p, us); 434 int l_mod = ab.alignmentOffset(l, us); 435 // Round up position 436 p = (p_mod > 0) ? p + (us - p_mod) : p; 437 // Round down limit 438 l = l - l_mod; 439 440 int ec = l - p; 441 if (as.limit() != ec) { 442 fail("Buffer capacity incorrect, expected: " + ec, as); 443 } 444 } 445 } 446 } 447 448 449 private static void fail(String problem, 450 ByteBuffer xb, ByteBuffer yb, 451 byte x, byte y) { 452 fail(problem + String.format(": x=%s y=%s", x, y), xb, yb); 453 } 454 455 private static void catchIllegalArgument(Buffer b, Runnable thunk) { 456 tryCatch(b, IllegalArgumentException.class, thunk); 457 } 458 459 private static void catchReadOnlyBuffer(Buffer b, Runnable thunk) { 460 tryCatch(b, ReadOnlyBufferException.class, thunk); 461 } 462 463 private static void catchIndexOutOfBounds(Buffer b, Runnable thunk) { 464 tryCatch(b, IndexOutOfBoundsException.class, thunk); 465 } 466 467 private static void catchIndexOutOfBounds(byte[] t, Runnable thunk) { 468 tryCatch(t, IndexOutOfBoundsException.class, thunk); 469 } 470 471 private static void tryCatch(Buffer b, Class<?> ex, Runnable thunk) { 472 boolean caught = false; 473 try { 474 thunk.run(); 475 } catch (Throwable x) { 476 if (ex.isAssignableFrom(x.getClass())) { 477 caught = true; 478 } else { 479 fail(x.getMessage() + " not expected"); 480 } 481 } 482 if (!caught) { 483 fail(ex.getName() + " not thrown", b); 484 } 485 } 486 487 private static void tryCatch(byte[] t, Class<?> ex, Runnable thunk) { 488 tryCatch(ByteBuffer.wrap(t), ex, thunk); 489 } 490 491 public static void test(int level, final ByteBuffer b, boolean direct) { 492 493 show(level, b); 494 495 if (direct != b.isDirect()) 496 fail("Wrong direction", b); 497 498 // Gets and puts 499 500 relPut(b); 501 relGet(b); 502 absGet(b); 503 bulkGet(b); 504 505 absPut(b); 506 relGet(b); 507 absGet(b); 508 bulkGet(b); 509 510 bulkPutArray(b); 511 relGet(b); 512 513 bulkPutBuffer(b); 514 relGet(b); 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 // Compact 553 554 relPut(b); 555 b.position(13); 556 b.compact(); 557 b.flip(); 558 relGet(b, 13); 559 560 // Exceptions 561 562 relPut(b); 563 b.limit(b.capacity() / 2); 564 b.position(b.limit()); 565 566 tryCatch(b, BufferUnderflowException.class, () -> b.get()); 567 tryCatch(b, BufferOverflowException.class, () -> b.put((byte)42)); 568 // The index must be non-negative and less than the buffer's limit. 569 catchIndexOutOfBounds(b, () -> b.get(b.limit())); 570 catchIndexOutOfBounds(b, () -> b.get(-1)); 571 catchIndexOutOfBounds(b, () -> b.put(b.limit(), (byte)42)); 572 tryCatch(b, InvalidMarkException.class, 573 () -> b.position(0).mark().compact().reset()); 574 575 try { 576 b.position(b.limit() + 1); 577 fail("IllegalArgumentException expected for position beyond limit"); 578 } catch (IllegalArgumentException e) { 579 if (e.getMessage() == null) { 580 fail("Non-null IllegalArgumentException message expected for" 581 + " position beyond limit"); 582 } 583 } 584 585 try { 586 b.position(-1); 587 fail("IllegalArgumentException expected for negative position"); 588 } catch (IllegalArgumentException e) { 589 if (e.getMessage() == null) { 590 fail("Non-null IllegalArgumentException message expected for" 591 + " negative position"); 592 } 593 } 594 595 try { 596 b.limit(b.capacity() + 1); 597 fail("IllegalArgumentException expected for limit beyond capacity"); 598 } catch (IllegalArgumentException e) { 599 if (e.getMessage() == null) { 600 fail("Non-null IllegalArgumentException message expected for" 601 + " limit beyond capacity"); 602 } 603 } 604 605 try { 606 b.limit(-1); 607 fail("IllegalArgumentException expected for negative limit"); 608 } catch (IllegalArgumentException e) { 609 if (e.getMessage() == null) { 610 fail("Non-null IllegalArgumentException message expected for" 611 + " negative limit"); 612 } 613 } 614 615 // Values 616 617 b.clear(); 618 b.put((byte)0); 619 b.put((byte)-1); 620 b.put((byte)1); 621 b.put(Byte.MAX_VALUE); 622 b.put(Byte.MIN_VALUE); 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 b.flip(); 641 ck(b, b.get(), 0); 642 ck(b, b.get(), (byte)-1); 643 ck(b, b.get(), 1); 644 ck(b, b.get(), Byte.MAX_VALUE); 645 ck(b, b.get(), Byte.MIN_VALUE); 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 // Comparison 674 b.rewind(); 675 ByteBuffer b2 = ByteBuffer.allocate(b.capacity()); 676 b2.put(b); 677 b2.flip(); 678 b.position(2); 679 b2.position(2); 680 if (!b.equals(b2)) { 681 for (int i = 2; i < b.limit(); i++) { 682 byte x = b.get(i); 683 byte y = b2.get(i); 684 if (x != y 685 686 687 688 689 690 691 ) { 692 out.println("[" + i + "] " + x + " != " + y); 693 } 694 } 695 fail("Identical buffers not equal", b, b2); 696 } 697 if (b.compareTo(b2) != 0) { 698 fail("Comparison to identical buffer != 0", b, b2); 699 } 700 b.limit(b.limit() + 1); 701 b.position(b.limit() - 1); 702 b.put((byte)99); 703 b.rewind(); 704 b2.rewind(); 705 if (b.equals(b2)) 706 fail("Non-identical buffers equal", b, b2); 707 if (b.compareTo(b2) <= 0) 708 fail("Comparison to shorter buffer <= 0", b, b2); 709 b.limit(b.limit() - 1); 710 711 b.put(2, (byte)42); 712 if (b.equals(b2)) 713 fail("Non-identical buffers equal", b, b2); 714 if (b.compareTo(b2) <= 0) 715 fail("Comparison to lesser buffer <= 0", b, b2); 716 717 // Check equals and compareTo with interesting values 718 for (byte x : VALUES) { 719 ByteBuffer xb = ByteBuffer.wrap(new byte[] { x }); 720 if (xb.compareTo(xb) != 0) { 721 fail("compareTo not reflexive", xb, xb, x, x); 722 } 723 if (!xb.equals(xb)) { 724 fail("equals not reflexive", xb, xb, x, x); 725 } 726 for (byte y : VALUES) { 727 ByteBuffer yb = ByteBuffer.wrap(new byte[] { y }); 728 if (xb.compareTo(yb) != - yb.compareTo(xb)) { 729 fail("compareTo not anti-symmetric", 730 xb, yb, x, y); 731 } 732 if ((xb.compareTo(yb) == 0) != xb.equals(yb)) { 733 fail("compareTo inconsistent with equals", 734 xb, yb, x, y); 735 } 736 if (xb.compareTo(yb) != Byte.compare(x, y)) { 737 738 739 740 741 742 743 fail("Incorrect results for ByteBuffer.compareTo", 744 xb, yb, x, y); 745 } 746 if (xb.equals(yb) != ((x == y) || ((x != x) && (y != y)))) { 747 fail("Incorrect results for ByteBuffer.equals", 748 xb, yb, x, y); 749 } 750 } 751 } 752 753 // Sub, dup 754 755 relPut(b); 756 relGet(b.duplicate()); 757 b.position(13); 758 relGet(b.duplicate(), 13); 759 relGet(b.duplicate().slice(), 13); 760 relGet(b.slice(), 13); 761 relGet(b.slice().duplicate(), 13); 762 763 // Slice 764 765 b.position(5); 766 ByteBuffer sb = b.slice(); 767 checkSlice(b, sb); 768 b.position(0); 769 ByteBuffer sb2 = sb.slice(); 770 checkSlice(sb, sb2); 771 772 if (!sb.equals(sb2)) 773 fail("Sliced slices do not match", sb, sb2); 774 if ((sb.hasArray()) && (sb.arrayOffset() != sb2.arrayOffset())) { 775 fail("Array offsets do not match: " 776 + sb.arrayOffset() + " != " + sb2.arrayOffset(), sb, sb2); 777 } 778 779 780 781 // Views 782 783 b.clear(); 784 b.order(ByteOrder.BIG_ENDIAN); 785 testViews(level + 1, b, direct); 786 787 for (int i = 1; i <= 9; i++) { 788 b.position(i); 789 show(level + 1, b); 790 testViews(level + 2, b, direct); 791 } 792 793 b.position(0); 794 b.order(ByteOrder.LITTLE_ENDIAN); 795 testViews(level + 1, b, direct); 796 797 // Heterogeneous accessors 798 799 b.order(ByteOrder.BIG_ENDIAN); 800 for (int i = 0; i <= 9; i++) { 801 b.position(i); 802 testHet(level + 1, b); 803 } 804 b.order(ByteOrder.LITTLE_ENDIAN); 805 b.position(3); 806 testHet(level + 1, b); 807 808 809 810 // Read-only views 811 812 b.rewind(); 813 final ByteBuffer rb = b.asReadOnlyBuffer(); 814 if (!b.equals(rb)) 815 fail("Buffer not equal to read-only view", b, rb); 816 show(level + 1, rb); 817 818 catchReadOnlyBuffer(b, () -> relPut(rb)); 819 catchReadOnlyBuffer(b, () -> absPut(rb)); 820 catchReadOnlyBuffer(b, () -> bulkPutArray(rb)); 821 catchReadOnlyBuffer(b, () -> bulkPutBuffer(rb)); 822 823 // put(ByteBuffer) should not change source position 824 final ByteBuffer src = ByteBuffer.allocate(1); 825 catchReadOnlyBuffer(b, () -> rb.put(src)); 826 ck(src, src.position(), 0); 827 828 catchReadOnlyBuffer(b, () -> rb.compact()); 829 830 831 832 catchReadOnlyBuffer(b, () -> rb.putChar((char)1)); 833 catchReadOnlyBuffer(b, () -> rb.putChar(0, (char)1)); 834 catchReadOnlyBuffer(b, () -> rb.putShort((short)1)); 835 catchReadOnlyBuffer(b, () -> rb.putShort(0, (short)1)); 836 catchReadOnlyBuffer(b, () -> rb.putInt(1)); 837 catchReadOnlyBuffer(b, () -> rb.putInt(0, 1)); 838 catchReadOnlyBuffer(b, () -> rb.putLong((long)1)); 839 catchReadOnlyBuffer(b, () -> rb.putLong(0, (long)1)); 840 catchReadOnlyBuffer(b, () -> rb.putFloat((float)1)); 841 catchReadOnlyBuffer(b, () -> rb.putFloat(0, (float)1)); 842 catchReadOnlyBuffer(b, () -> rb.putDouble((double)1)); 843 catchReadOnlyBuffer(b, () -> rb.putDouble(0, (double)1)); 844 845 846 847 848 849 850 851 852 853 854 855 if (rb.getClass().getName().startsWith("java.nio.Heap")) { 856 catchReadOnlyBuffer(b, () -> rb.array()); 857 catchReadOnlyBuffer(b, () -> rb.arrayOffset()); 858 if (rb.hasArray()) { 859 fail("Read-only heap buffer's backing array is accessible", rb); 860 } 861 } 862 863 // Bulk puts from read-only buffers 864 865 b.clear(); 866 rb.rewind(); 867 b.put(rb); 868 869 870 // For byte buffers, test both the direct and non-direct cases 871 ByteBuffer ob 872 = (b.isDirect() 873 ? ByteBuffer.allocate(rb.capacity()) 874 : ByteBuffer.allocateDirect(rb.capacity())); 875 rb.rewind(); 876 ob.put(rb); 877 878 879 relPut(b); // Required by testViews 880 881 882 // Test alignment 883 884 testAlign(b, direct); 885 886 } 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 public static void test(final byte [] ba) { 932 int offset = 47; 933 int length = 900; 934 final ByteBuffer b = ByteBuffer.wrap(ba, offset, length); 935 show(0, b); 936 ck(b, b.capacity(), ba.length); 937 ck(b, b.position(), offset); 938 ck(b, b.limit(), offset + length); 939 940 // The offset must be non-negative and no larger than <array.length>. 941 catchIndexOutOfBounds(ba, () -> ByteBuffer.wrap(ba, -1, ba.length)); 942 catchIndexOutOfBounds(ba, () -> ByteBuffer.wrap(ba, ba.length + 1, ba.length)); 943 catchIndexOutOfBounds(ba, () -> ByteBuffer.wrap(ba, 0, -1)); 944 catchIndexOutOfBounds(ba, () -> ByteBuffer.wrap(ba, 0, ba.length + 1)); 945 946 // A NullPointerException will be thrown if the array is null. 947 tryCatch(ba, NullPointerException.class, 948 () -> ByteBuffer.wrap((byte []) null, 0, 5)); 949 tryCatch(ba, NullPointerException.class, 950 () -> ByteBuffer.wrap((byte []) null)); 951 } 952 953 private static void testAllocate() { 954 // An IllegalArgumentException will be thrown for negative capacities. 955 catchIllegalArgument((Buffer) null, () -> ByteBuffer.allocate(-1)); 956 try { 957 ByteBuffer.allocate(-1); 958 } catch (IllegalArgumentException e) { 959 if (e.getMessage() == null) { 960 fail("Non-null IllegalArgumentException message expected for" 961 + " attempt to allocate negative capacity buffer"); 962 } 963 } 964 965 catchIllegalArgument((Buffer) null, () -> ByteBuffer.allocateDirect(-1)); 966 try { 967 ByteBuffer.allocateDirect(-1); 968 } catch (IllegalArgumentException e) { 969 if (e.getMessage() == null) { 970 fail("Non-null IllegalArgumentException message expected for" 971 + " attempt to allocate negative capacity direct buffer"); 972 } 973 } 974 975 } 976 977 public static void test() { 978 testAllocate(); 979 test(0, ByteBuffer.allocate(7 * 1024), false); 980 test(0, ByteBuffer.wrap(new byte[7 * 1024], 0, 7 * 1024), false); 981 test(new byte[1024]); 982 983 ByteBuffer b = ByteBuffer.allocateDirect(7 * 1024); 984 for (b.position(0); b.position() < b.limit(); ) 985 ck(b, b.get(), 0); 986 test(0, b, true); 987 988 989 990 991 992 callReset(ByteBuffer.allocate(10)); 993 994 995 996 997 998 } 999 1000} 1001