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
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 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
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153
154
155
156
157
158
159
160
161
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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
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531
532
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541
542
543
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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
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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 }