1 /*
2 * Copyright (c) 2000, 2019, 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
33 import java.nio.*;
34
35
36 public 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 absBulkGet(ByteBuffer b) {
91 int n = b.capacity();
92 int len = n - 7*2;
93 byte[] a = new byte[n + 7];
94 b.position(42);
95 b.get(7, a, 7, len);
96 ck(b, b.position() == 42);
97 for (int i = 0; i < len; i++) {
98 ck(b, (long)a[i + 7], (long)((byte)ic(i)));
99 }
100 }
101
102 private static void relPut(ByteBuffer b) {
103 int n = b.capacity();
104 b.clear();
105 for (int i = 0; i < n; i++)
106 b.put((byte)ic(i));
107 b.flip();
108 }
109
110 private static void absPut(ByteBuffer b) {
111 int n = b.capacity();
112 b.clear();
113 for (int i = 0; i < n; i++)
114 b.put(i, (byte)ic(i));
115 b.limit(n);
116 b.position(0);
117 }
118
119 private static void bulkPutArray(ByteBuffer b) {
120 int n = b.capacity();
121 b.clear();
122 byte[] a = new byte[n + 7];
123 for (int i = 0; i < n; i++)
124 a[i + 7] = (byte)ic(i);
125 b.put(a, 7, n);
126 b.flip();
127 }
128
129 private static void bulkPutBuffer(ByteBuffer b) {
130 int n = b.capacity();
131 b.clear();
132 ByteBuffer c = ByteBuffer.allocate(n + 7);
133 c.position(7);
134 for (int i = 0; i < n; i++)
135 c.put((byte)ic(i));
136 c.flip();
137 c.position(7);
138 b.put(c);
139 b.flip();
140 try {
141 b.put(b);
142 fail("IllegalArgumentException expected for put into same buffer");
143 } catch (IllegalArgumentException e) {
144 if (e.getMessage() == null) {
145 fail("Non-null IllegalArgumentException message expected from"
146 + " put into same buffer");
147 }
148 }
149 }
150
151 private static void absBulkPutArray(ByteBuffer b) {
152 int n = b.capacity();
153 b.clear();
154 int lim = n - 7;
155 int len = lim - 7;
156 b.limit(lim);
157 byte[] a = new byte[len + 7];
158 for (int i = 0; i < len; i++)
159 a[i + 7] = (byte)ic(i);
160 b.position(42);
161 b.put(7, a, 7, len);
162 ck(b, b.position() == 42);
163 }
164
165 //6231529
166 private static void callReset(ByteBuffer b) {
167 b.position(0);
168 b.mark();
169
170 b.duplicate().reset();
171 b.asReadOnlyBuffer().reset();
172 }
173
174
175
176
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211
212
213
214 private static void checkSlice(ByteBuffer b, ByteBuffer slice) {
215 ck(slice, 0, slice.position());
216 ck(slice, b.remaining(), slice.limit());
217 ck(slice, b.remaining(), slice.capacity());
218 if (b.isDirect() != slice.isDirect())
219 fail("Lost direction", slice);
220 if (b.isReadOnly() != slice.isReadOnly())
221 fail("Lost read-only", slice);
222 }
223
224
225
226 private static void checkBytes(ByteBuffer b, byte[] bs) {
227 int n = bs.length;
228 int p = b.position();
229 if (b.order() == ByteOrder.BIG_ENDIAN) {
230 for (int i = 0; i < n; i++) {
231 ck(b, b.get(), bs[i]);
232 }
233 } else {
234 for (int i = n - 1; i >= 0; i--) {
235 ck(b, b.get(), bs[i]);
236 }
237 }
238 b.position(p);
239 }
240
241 private static void compact(Buffer b) {
242 try {
243 Class<?> cl = b.getClass();
244 java.lang.reflect.Method m = cl.getDeclaredMethod("compact");
245 m.setAccessible(true);
246 m.invoke(b);
247 } catch (Exception e) {
248 fail(e.getMessage(), b);
249 }
250 }
251
252 private static void checkInvalidMarkException(final Buffer b) {
253 tryCatch(b, InvalidMarkException.class, () -> {
254 b.mark();
255 compact(b);
256 b.reset();
257 });
258 }
259
260 private static void testViews(int level, ByteBuffer b, boolean direct) {
261
262 ShortBuffer sb = b.asShortBuffer();
263 BasicShort.test(level, sb, direct);
264 checkBytes(b, new byte[] { 0, (byte)ic(0) });
265 checkInvalidMarkException(sb);
266
267 CharBuffer cb = b.asCharBuffer();
268 BasicChar.test(level, cb, direct);
269 checkBytes(b, new byte[] { 0, (byte)ic(0) });
270 checkInvalidMarkException(cb);
271
272 IntBuffer ib = b.asIntBuffer();
273 BasicInt.test(level, ib, direct);
274 checkBytes(b, new byte[] { 0, 0, 0, (byte)ic(0) });
275 checkInvalidMarkException(ib);
276
277 LongBuffer lb = b.asLongBuffer();
278 BasicLong.test(level, lb, direct);
279 checkBytes(b, new byte[] { 0, 0, 0, 0, 0, 0, 0, (byte)ic(0) });
280 checkInvalidMarkException(lb);
281
282 FloatBuffer fb = b.asFloatBuffer();
283 BasicFloat.test(level, fb, direct);
284 checkBytes(b, new byte[] { 0x42, (byte)0xc2, 0, 0 });
285 checkInvalidMarkException(fb);
286
287 DoubleBuffer db = b.asDoubleBuffer();
288 BasicDouble.test(level, db, direct);
289 checkBytes(b, new byte[] { 0x40, 0x58, 0x40, 0, 0, 0, 0, 0 });
290 checkInvalidMarkException(db);
291 }
292
293 private static void testHet(int level, ByteBuffer b) {
294
295 int p = b.position();
296 b.limit(b.capacity());
297 show(level, b);
298 out.print(" put:");
299
300 b.putChar((char)1);
301 b.putChar((char)Character.MAX_VALUE);
302 out.print(" char");
303
304 b.putShort((short)1);
305 b.putShort((short)Short.MAX_VALUE);
306 out.print(" short");
307
308 b.putInt(1);
309 b.putInt(Integer.MAX_VALUE);
310 out.print(" int");
311
312 b.putLong((long)1);
313 b.putLong((long)Long.MAX_VALUE);
314 out.print(" long");
315
316 b.putFloat((float)1);
317 b.putFloat((float)Float.MIN_VALUE);
318 b.putFloat((float)Float.MAX_VALUE);
319 out.print(" float");
320
321 b.putDouble((double)1);
322 b.putDouble((double)Double.MIN_VALUE);
323 b.putDouble((double)Double.MAX_VALUE);
324 out.print(" double");
325
326 out.println();
327 b.limit(b.position());
328 b.position(p);
329 show(level, b);
330 out.print(" get:");
331
332 ck(b, b.getChar(), 1);
333 ck(b, b.getChar(), Character.MAX_VALUE);
334 out.print(" char");
335
336 ck(b, b.getShort(), 1);
337 ck(b, b.getShort(), Short.MAX_VALUE);
338 out.print(" short");
339
340 ck(b, b.getInt(), 1);
341 ck(b, b.getInt(), Integer.MAX_VALUE);
342 out.print(" int");
343
344 ck(b, b.getLong(), 1);
345 ck(b, b.getLong(), Long.MAX_VALUE);
346 out.print(" long");
347
348 ck(b, (long)b.getFloat(), 1);
349 ck(b, (long)b.getFloat(), (long)Float.MIN_VALUE);
350 ck(b, (long)b.getFloat(), (long)Float.MAX_VALUE);
351 out.print(" float");
352
353 ck(b, (long)b.getDouble(), 1);
354 ck(b, (long)b.getDouble(), (long)Double.MIN_VALUE);
355 ck(b, (long)b.getDouble(), (long)Double.MAX_VALUE);
356 out.print(" double");
357
358 out.println();
359
360 }
361
362 private static void testAlign(final ByteBuffer b, boolean direct) {
363 // index out-of bounds
364 catchIllegalArgument(b, () -> b.alignmentOffset(-1, (short) 1));
365
366 // unit size values
367 catchIllegalArgument(b, () -> b.alignmentOffset(0, (short) 0));
368 for (int us = 1; us < 65; us++) {
369 int _us = us;
370 if ((us & (us - 1)) != 0) {
371 // unit size not a power of two
372 catchIllegalArgument(b, () -> b.alignmentOffset(0, _us));
373 } else {
374 if (direct || us <= 8) {
375 b.alignmentOffset(0, us);
376 } else {
377 // unit size > 8 with non-direct buffer
378 tryCatch(b, UnsupportedOperationException.class,
379 () -> b.alignmentOffset(0, _us));
380 }
381 }
382 }
383
384 // Probe for long misalignment at index zero for a newly created buffer
385 ByteBuffer empty =
386 direct ? ByteBuffer.allocateDirect(0) : ByteBuffer.allocate(0);
387 int longMisalignmentAtZero = empty.alignmentOffset(0, 8);
388
389 if (direct) {
390 // Freshly created direct byte buffers should be aligned at index 0
391 // for ref and primitive values (see Unsafe.allocateMemory)
392 if (longMisalignmentAtZero != 0) {
393 fail("Direct byte buffer misaligned at index 0"
394 + " for ref and primitive values "
395 + longMisalignmentAtZero);
396 }
397 } else {
398 // For heap byte buffers misalignment may occur on 32-bit systems
399 // where Unsafe.ARRAY_BYTE_BASE_OFFSET % 8 == 4 and not 0
400 // Note the GC will preserve alignment of the base address of the
401 // array
402 if (jdk.internal.misc.Unsafe.ARRAY_BYTE_BASE_OFFSET % 8
403 != longMisalignmentAtZero) {
404 fail("Heap byte buffer misaligned at index 0"
405 + " for ref and primitive values "
406 + longMisalignmentAtZero);
407 }
408 }
409
410 // Ensure test buffer is correctly aligned at index 0
411 if (b.alignmentOffset(0, 8) != longMisalignmentAtZero)
412 fail("Test input buffer not correctly aligned at index 0", b);
413
414 // Test misalignment values
415 for (int us : new int[]{1, 2, 4, 8}) {
416 for (int i = 0; i < us * 2; i++) {
417 int am = b.alignmentOffset(i, us);
418 int expectedAm = (longMisalignmentAtZero + i) % us;
419
420 if (am != expectedAm) {
421 String f = "b.alignmentOffset(%d, %d) == %d incorrect, expected %d";
422 fail(String.format(f, i, us, am, expectedAm));
423 }
424 }
425 }
426
427 // Created aligned slice to test against
428 int ap = 8 - longMisalignmentAtZero;
429 int al = b.limit() - b.alignmentOffset(b.limit(), 8);
430 ByteBuffer ab = b.position(ap).limit(al).
431 slice();
432 if (ab.limit() == 0) {
433 fail("Test input buffer not sufficiently sized to cover" +
434 " an aligned region for all values", b);
435 }
436 if (ab.alignmentOffset(0, 8) != 0)
437 fail("Aligned test input buffer not correctly aligned at index 0", ab);
438
439 for (int us : new int[]{1, 2, 4, 8}) {
440 for (int p = 1; p < 16; p++) {
441 int l = ab.limit() - p;
442
443 ByteBuffer as = ab.slice().position(p).limit(l).
444 alignedSlice(us);
445
446 ck(as, 0, as.position());
447 ck(as, as.capacity(), as.limit());
448 if (b.isDirect() != as.isDirect())
449 fail("Lost direction", as);
450 if (b.isReadOnly() != as.isReadOnly())
451 fail("Lost read-only", as);
452
453 if (as.alignmentOffset(0, us) != 0)
454 fail("Buffer not correctly aligned at index 0", as);
455
456 if (as.alignmentOffset(as.limit(), us) != 0)
457 fail("Buffer not correctly aligned at limit", as);
458
459 int p_mod = ab.alignmentOffset(p, us);
460 int l_mod = ab.alignmentOffset(l, us);
461 // Round up position
462 p = (p_mod > 0) ? p + (us - p_mod) : p;
463 // Round down limit
464 l = l - l_mod;
465
466 int ec = l - p;
467 if (as.limit() != ec) {
468 fail("Buffer capacity incorrect, expected: " + ec, as);
469 }
470 }
471 }
472 }
473
474
475 private static void fail(String problem,
476 ByteBuffer xb, ByteBuffer yb,
477 byte x, byte y) {
478 fail(problem + String.format(": x=%s y=%s", x, y), xb, yb);
479 }
480
481 private static void catchNullArgument(Buffer b, Runnable thunk) {
482 tryCatch(b, NullPointerException.class, thunk);
483 }
484
485 private static void catchIllegalArgument(Buffer b, Runnable thunk) {
486 tryCatch(b, IllegalArgumentException.class, thunk);
487 }
488
489 private static void catchReadOnlyBuffer(Buffer b, Runnable thunk) {
490 tryCatch(b, ReadOnlyBufferException.class, thunk);
491 }
492
493 private static void catchIndexOutOfBounds(Buffer b, Runnable thunk) {
494 tryCatch(b, IndexOutOfBoundsException.class, thunk);
495 }
496
497 private static void catchIndexOutOfBounds(byte[] t, Runnable thunk) {
498 tryCatch(t, IndexOutOfBoundsException.class, thunk);
499 }
500
501 private static void tryCatch(Buffer b, Class<?> ex, Runnable thunk) {
502 boolean caught = false;
503 try {
504 thunk.run();
505 } catch (Throwable x) {
506 if (ex.isAssignableFrom(x.getClass())) {
507 caught = true;
508 } else {
509 String s = x.getMessage();
510 if (s == null)
511 s = x.getClass().getName();
512 fail(s + " not expected");
513 }
514 }
515 if (!caught) {
516 fail(ex.getName() + " not thrown", b);
517 }
518 }
519
520 private static void tryCatch(byte[] t, Class<?> ex, Runnable thunk) {
521 tryCatch(ByteBuffer.wrap(t), ex, thunk);
522 }
523
524 public static void test(int level, final ByteBuffer b, boolean direct) {
525
526 show(level, b);
527
528 if (direct != b.isDirect())
529 fail("Wrong direction", b);
530
531 // Gets and puts
532
533 relPut(b);
534 relGet(b);
535 absGet(b);
536 bulkGet(b);
537
538 absPut(b);
539 relGet(b);
540 absGet(b);
541 bulkGet(b);
542
543 bulkPutArray(b);
544 relGet(b);
545
546 bulkPutBuffer(b);
547 relGet(b);
548
549 absBulkPutArray(b);
550 absBulkGet(b);
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588 // Compact
589
590 relPut(b);
591 b.position(13);
592 b.compact();
593 b.flip();
594 relGet(b, 13);
595
596 // Exceptions
597
598 relPut(b);
599 b.limit(b.capacity() / 2);
600 b.position(b.limit());
601
602 tryCatch(b, BufferUnderflowException.class, () -> b.get());
603 tryCatch(b, BufferOverflowException.class, () -> b.put((byte)42));
604 // The index must be non-negative and less than the buffer's limit.
605 catchIndexOutOfBounds(b, () -> b.get(b.limit()));
606 catchIndexOutOfBounds(b, () -> b.get(-1));
607 catchIndexOutOfBounds(b, () -> b.put(b.limit(), (byte)42));
608 tryCatch(b, InvalidMarkException.class,
609 () -> b.position(0).mark().compact().reset());
610
611 try {
612 b.position(b.limit() + 1);
613 fail("IllegalArgumentException expected for position beyond limit");
614 } catch (IllegalArgumentException e) {
615 if (e.getMessage() == null) {
616 fail("Non-null IllegalArgumentException message expected for"
617 + " position beyond limit");
618 }
619 }
620
621 try {
622 b.position(-1);
623 fail("IllegalArgumentException expected for negative position");
624 } catch (IllegalArgumentException e) {
625 if (e.getMessage() == null) {
626 fail("Non-null IllegalArgumentException message expected for"
627 + " negative position");
628 }
629 }
630
631 try {
632 b.limit(b.capacity() + 1);
633 fail("IllegalArgumentException expected for limit beyond capacity");
634 } catch (IllegalArgumentException e) {
635 if (e.getMessage() == null) {
636 fail("Non-null IllegalArgumentException message expected for"
637 + " limit beyond capacity");
638 }
639 }
640
641 try {
642 b.limit(-1);
643 fail("IllegalArgumentException expected for negative limit");
644 } catch (IllegalArgumentException e) {
645 if (e.getMessage() == null) {
646 fail("Non-null IllegalArgumentException message expected for"
647 + " negative limit");
648 }
649 }
650
651 // Exceptions in absolute bulk operations
652
653 catchNullArgument(b, () -> b.get(7, null, 0, 42));
654 catchNullArgument(b, () -> b.put(7, (byte[])null, 0, 42));
655
656 byte[] tmpa = new byte[42];
657 catchIndexOutOfBounds(b, () -> b.get(7, tmpa, -1, 42));
658 catchIndexOutOfBounds(b, () -> b.get(7, tmpa, 42, 1));
659 catchIndexOutOfBounds(b, () -> b.get(7, tmpa, 41, -1));
660 catchIndexOutOfBounds(b, () -> b.get(-1, tmpa, 0, 1));
661 catchIndexOutOfBounds(b, () -> b.get(b.limit(), tmpa, 0, 1));
662 catchIndexOutOfBounds(b, () -> b.get(b.limit() - 41, tmpa, 0, 42));
663
664 catchIndexOutOfBounds(b, () -> b.put(7, tmpa, -1, 42));
665 catchIndexOutOfBounds(b, () -> b.put(7, tmpa, 42, 1));
666 catchIndexOutOfBounds(b, () -> b.put(7, tmpa, 41, -1));
667 catchIndexOutOfBounds(b, () -> b.put(-1, tmpa, 0, 1));
668 catchIndexOutOfBounds(b, () -> b.put(b.limit(), tmpa, 0, 1));
669 catchIndexOutOfBounds(b, () -> b.put(b.limit() - 41, tmpa, 0, 42));
670
671 // Values
672
673 b.clear();
674 b.put((byte)0);
675 b.put((byte)-1);
676 b.put((byte)1);
677 b.put(Byte.MAX_VALUE);
678 b.put(Byte.MIN_VALUE);
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696 b.flip();
697 ck(b, b.get(), 0);
698 ck(b, b.get(), (byte)-1);
699 ck(b, b.get(), 1);
700 ck(b, b.get(), Byte.MAX_VALUE);
701 ck(b, b.get(), Byte.MIN_VALUE);
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729 // Comparison
730 b.rewind();
731 ByteBuffer b2 = ByteBuffer.allocate(b.capacity());
732 b2.put(b);
733 b2.flip();
734 b.position(2);
735 b2.position(2);
736 if (!b.equals(b2)) {
737 for (int i = 2; i < b.limit(); i++) {
738 byte x = b.get(i);
739 byte y = b2.get(i);
740 if (x != y
741
742
743
744
745
746
747 ) {
748 out.println("[" + i + "] " + x + " != " + y);
749 }
750 }
751 fail("Identical buffers not equal", b, b2);
752 }
753 if (b.compareTo(b2) != 0) {
754 fail("Comparison to identical buffer != 0", b, b2);
755 }
756 b.limit(b.limit() + 1);
757 b.position(b.limit() - 1);
758 b.put((byte)99);
759 b.rewind();
760 b2.rewind();
761 if (b.equals(b2))
762 fail("Non-identical buffers equal", b, b2);
763 if (b.compareTo(b2) <= 0)
764 fail("Comparison to shorter buffer <= 0", b, b2);
765 b.limit(b.limit() - 1);
766
767 b.put(2, (byte)42);
768 if (b.equals(b2))
769 fail("Non-identical buffers equal", b, b2);
770 if (b.compareTo(b2) <= 0)
771 fail("Comparison to lesser buffer <= 0", b, b2);
772
773 // Check equals and compareTo with interesting values
774 for (byte x : VALUES) {
775 ByteBuffer xb = ByteBuffer.wrap(new byte[] { x });
776 if (xb.compareTo(xb) != 0) {
777 fail("compareTo not reflexive", xb, xb, x, x);
778 }
779 if (!xb.equals(xb)) {
780 fail("equals not reflexive", xb, xb, x, x);
781 }
782 for (byte y : VALUES) {
783 ByteBuffer yb = ByteBuffer.wrap(new byte[] { y });
784 if (xb.compareTo(yb) != - yb.compareTo(xb)) {
785 fail("compareTo not anti-symmetric",
786 xb, yb, x, y);
787 }
788 if ((xb.compareTo(yb) == 0) != xb.equals(yb)) {
789 fail("compareTo inconsistent with equals",
790 xb, yb, x, y);
791 }
792 if (xb.compareTo(yb) != Byte.compare(x, y)) {
793
794
795
796
797
798
799 fail("Incorrect results for ByteBuffer.compareTo",
800 xb, yb, x, y);
801 }
802 if (xb.equals(yb) != ((x == y) || ((x != x) && (y != y)))) {
803 fail("Incorrect results for ByteBuffer.equals",
804 xb, yb, x, y);
805 }
806 }
807 }
808
809 // Sub, dup
810
811 relPut(b);
812 relGet(b.duplicate());
813 b.position(13);
814 relGet(b.duplicate(), 13);
815 relGet(b.duplicate().slice(), 13);
816 relGet(b.slice(), 13);
817 relGet(b.slice().duplicate(), 13);
818
819 // Slice
820
821 b.position(5);
822 ByteBuffer sb = b.slice();
823 checkSlice(b, sb);
824 b.position(0);
825 ByteBuffer sb2 = sb.slice();
826 checkSlice(sb, sb2);
827
828 if (!sb.equals(sb2))
829 fail("Sliced slices do not match", sb, sb2);
830 if ((sb.hasArray()) && (sb.arrayOffset() != sb2.arrayOffset())) {
831 fail("Array offsets do not match: "
832 + sb.arrayOffset() + " != " + sb2.arrayOffset(), sb, sb2);
833 }
834
835
836
837 // Views
838
839 b.clear();
840 b.order(ByteOrder.BIG_ENDIAN);
841 testViews(level + 1, b, direct);
842
843 for (int i = 1; i <= 9; i++) {
844 b.position(i);
845 show(level + 1, b);
846 testViews(level + 2, b, direct);
847 }
848
849 b.position(0);
850 b.order(ByteOrder.LITTLE_ENDIAN);
851 testViews(level + 1, b, direct);
852
853 // Heterogeneous accessors
854
855 b.order(ByteOrder.BIG_ENDIAN);
856 for (int i = 0; i <= 9; i++) {
857 b.position(i);
858 testHet(level + 1, b);
859 }
860 b.order(ByteOrder.LITTLE_ENDIAN);
861 b.position(3);
862 testHet(level + 1, b);
863
864
865
866 // Read-only views
867
868 b.rewind();
869 final ByteBuffer rb = b.asReadOnlyBuffer();
870 if (!b.equals(rb))
871 fail("Buffer not equal to read-only view", b, rb);
872 show(level + 1, rb);
873
874 catchReadOnlyBuffer(b, () -> relPut(rb));
875 catchReadOnlyBuffer(b, () -> absPut(rb));
876 catchReadOnlyBuffer(b, () -> bulkPutArray(rb));
877 catchReadOnlyBuffer(b, () -> bulkPutBuffer(rb));
878 catchReadOnlyBuffer(b, () -> absBulkPutArray(rb));
879
880 // put(ByteBuffer) should not change source position
881 final ByteBuffer src = ByteBuffer.allocate(1);
882 catchReadOnlyBuffer(b, () -> rb.put(src));
883 ck(src, src.position(), 0);
884
885 catchReadOnlyBuffer(b, () -> rb.compact());
886
887
888
889 catchReadOnlyBuffer(b, () -> rb.putChar((char)1));
890 catchReadOnlyBuffer(b, () -> rb.putChar(0, (char)1));
891 catchReadOnlyBuffer(b, () -> rb.putShort((short)1));
892 catchReadOnlyBuffer(b, () -> rb.putShort(0, (short)1));
893 catchReadOnlyBuffer(b, () -> rb.putInt(1));
894 catchReadOnlyBuffer(b, () -> rb.putInt(0, 1));
895 catchReadOnlyBuffer(b, () -> rb.putLong((long)1));
896 catchReadOnlyBuffer(b, () -> rb.putLong(0, (long)1));
897 catchReadOnlyBuffer(b, () -> rb.putFloat((float)1));
898 catchReadOnlyBuffer(b, () -> rb.putFloat(0, (float)1));
899 catchReadOnlyBuffer(b, () -> rb.putDouble((double)1));
900 catchReadOnlyBuffer(b, () -> rb.putDouble(0, (double)1));
901
902
903
904
905
906
907
908
909
910
911
912 if (rb.getClass().getName().startsWith("java.nio.Heap")) {
913 catchReadOnlyBuffer(b, () -> rb.array());
914 catchReadOnlyBuffer(b, () -> rb.arrayOffset());
915 if (rb.hasArray()) {
916 fail("Read-only heap buffer's backing array is accessible", rb);
917 }
918 }
919
920 // Bulk puts from read-only buffers
921
922 b.clear();
923 rb.rewind();
924 b.put(rb);
925
926
927 // For byte buffers, test both the direct and non-direct cases
928 ByteBuffer ob
929 = (b.isDirect()
930 ? ByteBuffer.allocate(rb.capacity())
931 : ByteBuffer.allocateDirect(rb.capacity()));
932 rb.rewind();
933 ob.put(rb);
934
935
936 relPut(b); // Required by testViews
937
938
939 // Test alignment
940
941 testAlign(b, direct);
942
943 }
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
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964
965
966
967
968
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971
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974
975
976
977
978
979
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981
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983
984
985
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987
988
989
990
991
992
993
994
995 public static void test(final byte [] ba) {
996 int offset = 47;
997 int length = 900;
998 final ByteBuffer b = ByteBuffer.wrap(ba, offset, length);
999 show(0, b);
1000 ck(b, b.capacity(), ba.length);
1001 ck(b, b.position(), offset);
1002 ck(b, b.limit(), offset + length);
1003
1004 // The offset must be non-negative and no larger than <array.length>.
1005 catchIndexOutOfBounds(ba, () -> ByteBuffer.wrap(ba, -1, ba.length));
1006 catchIndexOutOfBounds(ba, () -> ByteBuffer.wrap(ba, ba.length + 1, ba.length));
1007 catchIndexOutOfBounds(ba, () -> ByteBuffer.wrap(ba, 0, -1));
1008 catchIndexOutOfBounds(ba, () -> ByteBuffer.wrap(ba, 0, ba.length + 1));
1009
1010 // A NullPointerException will be thrown if the array is null.
1011 tryCatch(ba, NullPointerException.class,
1012 () -> ByteBuffer.wrap((byte []) null, 0, 5));
1013 tryCatch(ba, NullPointerException.class,
1014 () -> ByteBuffer.wrap((byte []) null));
1015 }
1016
1017 private static void testAllocate() {
1018 // An IllegalArgumentException will be thrown for negative capacities.
1019 catchIllegalArgument((Buffer) null, () -> ByteBuffer.allocate(-1));
1020 try {
1021 ByteBuffer.allocate(-1);
1022 } catch (IllegalArgumentException e) {
1023 if (e.getMessage() == null) {
1024 fail("Non-null IllegalArgumentException message expected for"
1025 + " attempt to allocate negative capacity buffer");
1026 }
1027 }
1028
1029 catchIllegalArgument((Buffer) null, () -> ByteBuffer.allocateDirect(-1));
1030 try {
1031 ByteBuffer.allocateDirect(-1);
1032 } catch (IllegalArgumentException e) {
1033 if (e.getMessage() == null) {
1034 fail("Non-null IllegalArgumentException message expected for"
1035 + " attempt to allocate negative capacity direct buffer");
1036 }
1037 }
1038
1039 }
1040
1041 public static void test() {
1042 testAllocate();
1043 test(0, ByteBuffer.allocate(7 * 1024), false);
1044 test(0, ByteBuffer.wrap(new byte[7 * 1024], 0, 7 * 1024), false);
1045 test(new byte[1024]);
1046
1047 ByteBuffer b = ByteBuffer.allocateDirect(7 * 1024);
1048 for (b.position(0); b.position() < b.limit(); )
1049 ck(b, b.get(), 0);
1050 test(0, b, true);
1051
1052
1053
1054
1055
1056 callReset(ByteBuffer.allocate(10));
1057
1058
1059
1060
1061
1062 }
1063
1064 }