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/*
* Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* Type-specific source code for unit test
*
* Regenerate the BasicX classes via genBasic.sh whenever this file changes.
* We check in the generated source files so that the test tree can be used
* independently of the rest of the source tree.
*/
// -- This file was mechanically generated: Do not edit! -- //
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.*;
import java.nio.channels.FileChannel;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Random;
public class BasicByte
extends Basic
{
private static final byte[] VALUES = {
Byte.MIN_VALUE,
(byte) -1,
(byte) 0,
(byte) 1,
Byte.MAX_VALUE,
};
private static void relGet(ByteBuffer b) {
int n = b.capacity();
for (int i = 0; i < n; i++)
ck(b, (long)b.get(), (long)((byte)ic(i)));
b.rewind();
}
private static void relGet(ByteBuffer b, int start) {
int n = b.remaining();
for (int i = start; i < n; i++)
ck(b, (long)b.get(), (long)((byte)ic(i)));
b.rewind();
}
private static void absGet(ByteBuffer b) {
int n = b.capacity();
for (int i = 0; i < n; i++)
ck(b, (long)b.get(), (long)((byte)ic(i)));
b.rewind();
}
private static void bulkGet(ByteBuffer b) {
int n = b.capacity();
byte[] a = new byte[n + 7];
b.get(a, 7, n);
for (int i = 0; i < n; i++) {
ck(b, (long)a[i + 7], (long)((byte)ic(i)));
}
}
private static void absBulkGet(ByteBuffer b) {
int n = b.capacity();
int len = n - 7*2;
byte[] a = new byte[n + 7];
b.position(42);
b.get(7, a, 7, len);
ck(b, b.position() == 42);
for (int i = 0; i < len; i++) {
ck(b, (long)a[i + 7], (long)((byte)ic(i)));
}
}
private static void relPut(ByteBuffer b) {
int n = b.capacity();
b.clear();
for (int i = 0; i < n; i++)
b.put((byte)ic(i));
b.flip();
}
private static void absPut(ByteBuffer b) {
int n = b.capacity();
b.clear();
for (int i = 0; i < n; i++)
b.put(i, (byte)ic(i));
b.limit(n);
b.position(0);
}
private static void bulkPutArray(ByteBuffer b) {
int n = b.capacity();
b.clear();
byte[] a = new byte[n + 7];
for (int i = 0; i < n; i++)
a[i + 7] = (byte)ic(i);
b.put(a, 7, n);
b.flip();
}
private static void bulkPutBuffer(ByteBuffer b) {
int n = b.capacity();
b.clear();
ByteBuffer c = ByteBuffer.allocate(n + 7);
c.position(7);
for (int i = 0; i < n; i++)
c.put((byte)ic(i));
c.flip();
c.position(7);
b.put(c);
b.flip();
try {
b.put(b);
fail("IllegalArgumentException expected for put into same buffer");
} catch (IllegalArgumentException e) {
if (e.getMessage() == null) {
fail("Non-null IllegalArgumentException message expected from"
+ " put into same buffer");
}
}
}
private static void absBulkPutArray(ByteBuffer b) {
int n = b.capacity();
b.clear();
int lim = n - 7;
int len = lim - 7;
b.limit(lim);
byte[] a = new byte[len + 7];
for (int i = 0; i < len; i++)
a[i + 7] = (byte)ic(i);
b.position(42);
b.put(7, a, 7, len);
ck(b, b.position() == 42);
}
//6231529
private static void callReset(ByteBuffer b) {
b.position(0);
b.mark();
b.duplicate().reset();
b.asReadOnlyBuffer().reset();
}
private static void checkSlice(ByteBuffer b, ByteBuffer slice) {
ck(slice, 0, slice.position());
ck(slice, b.remaining(), slice.limit());
ck(slice, b.remaining(), slice.capacity());
if (b.isDirect() != slice.isDirect())
fail("Lost direction", slice);
if (b.isReadOnly() != slice.isReadOnly())
fail("Lost read-only", slice);
}
private static void checkBytes(ByteBuffer b, byte[] bs) {
int n = bs.length;
int p = b.position();
if (b.order() == ByteOrder.BIG_ENDIAN) {
for (int i = 0; i < n; i++) {
ck(b, b.get(), bs[i]);
}
} else {
for (int i = n - 1; i >= 0; i--) {
ck(b, b.get(), bs[i]);
}
}
b.position(p);
}
private static void compact(Buffer b) {
try {
Class<?> cl = b.getClass();
java.lang.reflect.Method m = cl.getDeclaredMethod("compact");
m.setAccessible(true);
m.invoke(b);
} catch (Exception e) {
fail(e.getMessage(), b);
}
}
private static void checkInvalidMarkException(final Buffer b) {
tryCatch(b, InvalidMarkException.class, () -> {
b.mark();
compact(b);
b.reset();
});
}
private static void testViews(int level, ByteBuffer b, boolean direct) {
ShortBuffer sb = b.asShortBuffer();
BasicShort.test(level, sb, direct);
checkBytes(b, new byte[] { 0, (byte)ic(0) });
checkInvalidMarkException(sb);
CharBuffer cb = b.asCharBuffer();
BasicChar.test(level, cb, direct);
checkBytes(b, new byte[] { 0, (byte)ic(0) });
checkInvalidMarkException(cb);
IntBuffer ib = b.asIntBuffer();
BasicInt.test(level, ib, direct);
checkBytes(b, new byte[] { 0, 0, 0, (byte)ic(0) });
checkInvalidMarkException(ib);
LongBuffer lb = b.asLongBuffer();
BasicLong.test(level, lb, direct);
checkBytes(b, new byte[] { 0, 0, 0, 0, 0, 0, 0, (byte)ic(0) });
checkInvalidMarkException(lb);
FloatBuffer fb = b.asFloatBuffer();
BasicFloat.test(level, fb, direct);
checkBytes(b, new byte[] { 0x42, (byte)0xc2, 0, 0 });
checkInvalidMarkException(fb);
DoubleBuffer db = b.asDoubleBuffer();
BasicDouble.test(level, db, direct);
checkBytes(b, new byte[] { 0x40, 0x58, 0x40, 0, 0, 0, 0, 0 });
checkInvalidMarkException(db);
}
private static void testHet(int level, ByteBuffer b) {
int p = b.position();
b.limit(b.capacity());
show(level, b);
out.print(" put:");
b.putChar((char)1);
b.putChar((char)Character.MAX_VALUE);
out.print(" char");
b.putShort((short)1);
b.putShort((short)Short.MAX_VALUE);
out.print(" short");
b.putInt(1);
b.putInt(Integer.MAX_VALUE);
out.print(" int");
b.putLong((long)1);
b.putLong((long)Long.MAX_VALUE);
out.print(" long");
b.putFloat((float)1);
b.putFloat((float)Float.MIN_VALUE);
b.putFloat((float)Float.MAX_VALUE);
out.print(" float");
b.putDouble((double)1);
b.putDouble((double)Double.MIN_VALUE);
b.putDouble((double)Double.MAX_VALUE);
out.print(" double");
out.println();
b.limit(b.position());
b.position(p);
show(level, b);
out.print(" get:");
ck(b, b.getChar(), 1);
ck(b, b.getChar(), Character.MAX_VALUE);
out.print(" char");
ck(b, b.getShort(), 1);
ck(b, b.getShort(), Short.MAX_VALUE);
out.print(" short");
ck(b, b.getInt(), 1);
ck(b, b.getInt(), Integer.MAX_VALUE);
out.print(" int");
ck(b, b.getLong(), 1);
ck(b, b.getLong(), Long.MAX_VALUE);
out.print(" long");
ck(b, (long)b.getFloat(), 1);
ck(b, (long)b.getFloat(), (long)Float.MIN_VALUE);
ck(b, (long)b.getFloat(), (long)Float.MAX_VALUE);
out.print(" float");
ck(b, (long)b.getDouble(), 1);
ck(b, (long)b.getDouble(), (long)Double.MIN_VALUE);
ck(b, (long)b.getDouble(), (long)Double.MAX_VALUE);
out.print(" double");
out.println();
}
private static void testAlign(final ByteBuffer b, boolean direct) {
// index out-of bounds
catchIllegalArgument(b, () -> b.alignmentOffset(-1, (short) 1));
// unit size values
catchIllegalArgument(b, () -> b.alignmentOffset(0, (short) 0));
for (int us = 1; us < 65; us++) {
int _us = us;
if ((us & (us - 1)) != 0) {
// unit size not a power of two
catchIllegalArgument(b, () -> b.alignmentOffset(0, _us));
} else {
if (direct || us <= 8) {
b.alignmentOffset(0, us);
} else {
// unit size > 8 with non-direct buffer
tryCatch(b, UnsupportedOperationException.class,
() -> b.alignmentOffset(0, _us));
}
}
}
// Probe for long misalignment at index zero for a newly created buffer
ByteBuffer empty =
direct ? ByteBuffer.allocateDirect(0) : ByteBuffer.allocate(0);
int longMisalignmentAtZero = empty.alignmentOffset(0, 8);
if (direct) {
// Freshly created direct byte buffers should be aligned at index 0
// for ref and primitive values (see Unsafe.allocateMemory)
if (longMisalignmentAtZero != 0) {
fail("Direct byte buffer misaligned at index 0"
+ " for ref and primitive values "
+ longMisalignmentAtZero);
}
} else {
// For heap byte buffers misalignment may occur on 32-bit systems
// where Unsafe.ARRAY_BYTE_BASE_OFFSET % 8 == 4 and not 0
// Note the GC will preserve alignment of the base address of the
// array
if (jdk.internal.misc.Unsafe.ARRAY_BYTE_BASE_OFFSET % 8
!= longMisalignmentAtZero) {
fail("Heap byte buffer misaligned at index 0"
+ " for ref and primitive values "
+ longMisalignmentAtZero);
}
}
// Ensure test buffer is correctly aligned at index 0
if (b.alignmentOffset(0, 8) != longMisalignmentAtZero)
fail("Test input buffer not correctly aligned at index 0", b);
// Test misalignment values
for (int us : new int[]{1, 2, 4, 8}) {
for (int i = 0; i < us * 2; i++) {
int am = b.alignmentOffset(i, us);
int expectedAm = (longMisalignmentAtZero + i) % us;
if (am != expectedAm) {
String f = "b.alignmentOffset(%d, %d) == %d incorrect, expected %d";
fail(String.format(f, i, us, am, expectedAm));
}
}
}
// Created aligned slice to test against
int ap = 8 - longMisalignmentAtZero;
int al = b.limit() - b.alignmentOffset(b.limit(), 8);
ByteBuffer ab = b.position(ap).limit(al).
slice();
if (ab.limit() == 0) {
fail("Test input buffer not sufficiently sized to cover" +
" an aligned region for all values", b);
}
if (ab.alignmentOffset(0, 8) != 0)
fail("Aligned test input buffer not correctly aligned at index 0", ab);
for (int us : new int[]{1, 2, 4, 8}) {
for (int p = 1; p < 16; p++) {
int l = ab.limit() - p;
ByteBuffer as = ab.slice().position(p).limit(l).
alignedSlice(us);
ck(as, 0, as.position());
ck(as, as.capacity(), as.limit());
if (b.isDirect() != as.isDirect())
fail("Lost direction", as);
if (b.isReadOnly() != as.isReadOnly())
fail("Lost read-only", as);
if (as.alignmentOffset(0, us) != 0)
fail("Buffer not correctly aligned at index 0", as);
if (as.alignmentOffset(as.limit(), us) != 0)
fail("Buffer not correctly aligned at limit", as);
int p_mod = ab.alignmentOffset(p, us);
int l_mod = ab.alignmentOffset(l, us);
// Round up position
p = (p_mod > 0) ? p + (us - p_mod) : p;
// Round down limit
l = l - l_mod;
int ec = l - p;
if (as.limit() != ec) {
fail("Buffer capacity incorrect, expected: " + ec, as);
}
}
}
// mapped buffers
try {
for (MappedByteBuffer bb : mappedBuffers()) {
try {
int offset = bb.alignmentOffset(1, 4);
ck(bb, offset >= 0);
} catch (UnsupportedOperationException e) {
System.out.println("Not applicable, UOE thrown: ");
}
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
// alignment identities
final int maxPow2 = 12;
ByteBuffer bb = ByteBuffer.allocateDirect(1 << maxPow2); // cap 4096
Random rnd = new Random();
long seed = rnd.nextLong();
rnd = new Random(seed);
for (int i = 0; i < 100; i++) {
// 1 == 2^0 <= unitSize == 2^k <= bb.capacity()/2
int unitSize = 1 << rnd.nextInt(maxPow2);
// 0 <= index < 2*unitSize
int index = rnd.nextInt(unitSize << 1);
int value = bb.alignmentOffset(index, unitSize);
try {
if (value < 0 || value >= unitSize) {
throw new RuntimeException(value + " < 0 || " +
value + " >= " + unitSize);
}
if (value <= index &&
bb.alignmentOffset(index - value, unitSize) != 0)
throw new RuntimeException("Identity 1");
if (bb.alignmentOffset(index + (unitSize - value),
unitSize) != 0)
throw new RuntimeException("Identity 2");
} catch (RuntimeException re) {
System.err.format("seed %d, index %d, unitSize %d, value %d%n",
seed, index, unitSize, value);
throw re;
}
}
}
private static MappedByteBuffer[] mappedBuffers() throws IOException {
return new MappedByteBuffer[]{
createMappedBuffer(new byte[]{0, 1, 2, 3}),
createMappedBuffer(new byte[]{0, 1, 2, -3,
45, 6, 7, 78, 3, -7, 6, 7, -128, 127}),
};
}
private static MappedByteBuffer createMappedBuffer(byte[] contents)
throws IOException {
Path tempFile = Files.createTempFile("mbb", null);
tempFile.toFile().deleteOnExit();
Files.write(tempFile, contents);
try (FileChannel fc = FileChannel.open(tempFile)) {
MappedByteBuffer map =
fc.map(FileChannel.MapMode.READ_ONLY, 0, contents.length);
map.load();
return map;
}
}
private static void fail(String problem,
ByteBuffer xb, ByteBuffer yb,
byte x, byte y) {
fail(problem + String.format(": x=%s y=%s", x, y), xb, yb);
}
private static void catchNullArgument(Buffer b, Runnable thunk) {
tryCatch(b, NullPointerException.class, thunk);
}
private static void catchIllegalArgument(Buffer b, Runnable thunk) {
tryCatch(b, IllegalArgumentException.class, thunk);
}
private static void catchReadOnlyBuffer(Buffer b, Runnable thunk) {
tryCatch(b, ReadOnlyBufferException.class, thunk);
}
private static void catchIndexOutOfBounds(Buffer b, Runnable thunk) {
tryCatch(b, IndexOutOfBoundsException.class, thunk);
}
private static void catchIndexOutOfBounds(byte[] t, Runnable thunk) {
tryCatch(t, IndexOutOfBoundsException.class, thunk);
}
private static void tryCatch(Buffer b, Class<?> ex, Runnable thunk) {
boolean caught = false;
try {
thunk.run();
} catch (Throwable x) {
if (ex.isAssignableFrom(x.getClass())) {
caught = true;
} else {
String s = x.getMessage();
if (s == null)
s = x.getClass().getName();
fail(s + " not expected");
}
}
if (!caught) {
fail(ex.getName() + " not thrown", b);
}
}
private static void tryCatch(byte[] t, Class<?> ex, Runnable thunk) {
tryCatch(ByteBuffer.wrap(t), ex, thunk);
}
public static void test(int level, final ByteBuffer b, boolean direct) {
show(level, b);
if (direct != b.isDirect())
fail("Wrong direction", b);
// Gets and puts
relPut(b);
relGet(b);
absGet(b);
bulkGet(b);
absPut(b);
relGet(b);
absGet(b);
bulkGet(b);
bulkPutArray(b);
relGet(b);
bulkPutBuffer(b);
relGet(b);
absBulkPutArray(b);
absBulkGet(b);
// Compact
relPut(b);
b.position(13);
b.compact();
b.flip();
relGet(b, 13);
// Exceptions
relPut(b);
b.limit(b.capacity() / 2);
b.position(b.limit());
tryCatch(b, BufferUnderflowException.class, () -> b.get());
tryCatch(b, BufferOverflowException.class, () -> b.put((byte)42));
// The index must be non-negative and less than the buffer's limit.
catchIndexOutOfBounds(b, () -> b.get(b.limit()));
catchIndexOutOfBounds(b, () -> b.get(-1));
catchIndexOutOfBounds(b, () -> b.put(b.limit(), (byte)42));
tryCatch(b, InvalidMarkException.class,
() -> b.position(0).mark().compact().reset());
try {
b.position(b.limit() + 1);
fail("IllegalArgumentException expected for position beyond limit");
} catch (IllegalArgumentException e) {
if (e.getMessage() == null) {
fail("Non-null IllegalArgumentException message expected for"
+ " position beyond limit");
}
}
try {
b.position(-1);
fail("IllegalArgumentException expected for negative position");
} catch (IllegalArgumentException e) {
if (e.getMessage() == null) {
fail("Non-null IllegalArgumentException message expected for"
+ " negative position");
}
}
try {
b.limit(b.capacity() + 1);
fail("IllegalArgumentException expected for limit beyond capacity");
} catch (IllegalArgumentException e) {
if (e.getMessage() == null) {
fail("Non-null IllegalArgumentException message expected for"
+ " limit beyond capacity");
}
}
try {
b.limit(-1);
fail("IllegalArgumentException expected for negative limit");
} catch (IllegalArgumentException e) {
if (e.getMessage() == null) {
fail("Non-null IllegalArgumentException message expected for"
+ " negative limit");
}
}
// Exceptions in absolute bulk and slice operations
catchNullArgument(b, () -> b.get(7, null, 0, 42));
catchNullArgument(b, () -> b.put(7, (byte[])null, 0, 42));
byte[] tmpa = new byte[42];
catchIndexOutOfBounds(b, () -> b.get(7, tmpa, -1, 42));
catchIndexOutOfBounds(b, () -> b.get(7, tmpa, 42, 1));
catchIndexOutOfBounds(b, () -> b.get(7, tmpa, 41, -1));
catchIndexOutOfBounds(b, () -> b.get(-1, tmpa, 0, 1));
catchIndexOutOfBounds(b, () -> b.get(b.limit(), tmpa, 0, 1));
catchIndexOutOfBounds(b, () -> b.get(b.limit() - 41, tmpa, 0, 42));
catchIndexOutOfBounds(b, () -> b.put(7, tmpa, -1, 42));
catchIndexOutOfBounds(b, () -> b.put(7, tmpa, 42, 1));
catchIndexOutOfBounds(b, () -> b.put(7, tmpa, 41, -1));
catchIndexOutOfBounds(b, () -> b.put(-1, tmpa, 0, 1));
catchIndexOutOfBounds(b, () -> b.put(b.limit(), tmpa, 0, 1));
catchIndexOutOfBounds(b, () -> b.put(b.limit() - 41, tmpa, 0, 42));
catchIndexOutOfBounds(b, () -> b.slice(-1, 7));
catchIndexOutOfBounds(b, () -> b.slice(b.limit() + 1, 7));
catchIndexOutOfBounds(b, () -> b.slice(0, -1));
catchIndexOutOfBounds(b, () -> b.slice(7, b.limit() - 7 + 1));
// Values
b.clear();
b.put((byte)0);
b.put((byte)-1);
b.put((byte)1);
b.put(Byte.MAX_VALUE);
b.put(Byte.MIN_VALUE);
b.flip();
ck(b, b.get(), 0);
ck(b, b.get(), (byte)-1);
ck(b, b.get(), 1);
ck(b, b.get(), Byte.MAX_VALUE);
ck(b, b.get(), Byte.MIN_VALUE);
// Comparison
b.rewind();
ByteBuffer b2 = ByteBuffer.allocate(b.capacity());
b2.put(b);
b2.flip();
b.position(2);
b2.position(2);
if (!b.equals(b2)) {
for (int i = 2; i < b.limit(); i++) {
byte x = b.get(i);
byte y = b2.get(i);
if (x != y
) {
out.println("[" + i + "] " + x + " != " + y);
}
}
fail("Identical buffers not equal", b, b2);
}
if (b.compareTo(b2) != 0) {
fail("Comparison to identical buffer != 0", b, b2);
}
b.limit(b.limit() + 1);
b.position(b.limit() - 1);
b.put((byte)99);
b.rewind();
b2.rewind();
if (b.equals(b2))
fail("Non-identical buffers equal", b, b2);
if (b.compareTo(b2) <= 0)
fail("Comparison to shorter buffer <= 0", b, b2);
b.limit(b.limit() - 1);
b.put(2, (byte)42);
if (b.equals(b2))
fail("Non-identical buffers equal", b, b2);
if (b.compareTo(b2) <= 0)
fail("Comparison to lesser buffer <= 0", b, b2);
// Check equals and compareTo with interesting values
for (byte x : VALUES) {
ByteBuffer xb = ByteBuffer.wrap(new byte[] { x });
if (xb.compareTo(xb) != 0) {
fail("compareTo not reflexive", xb, xb, x, x);
}
if (!xb.equals(xb)) {
fail("equals not reflexive", xb, xb, x, x);
}
for (byte y : VALUES) {
ByteBuffer yb = ByteBuffer.wrap(new byte[] { y });
if (xb.compareTo(yb) != - yb.compareTo(xb)) {
fail("compareTo not anti-symmetric",
xb, yb, x, y);
}
if ((xb.compareTo(yb) == 0) != xb.equals(yb)) {
fail("compareTo inconsistent with equals",
xb, yb, x, y);
}
if (xb.compareTo(yb) != Byte.compare(x, y)) {
fail("Incorrect results for ByteBuffer.compareTo",
xb, yb, x, y);
}
if (xb.equals(yb) != ((x == y) || ((x != x) && (y != y)))) {
fail("Incorrect results for ByteBuffer.equals",
xb, yb, x, y);
}
}
}
// Sub, dup
relPut(b);
relGet(b.duplicate());
b.position(13);
relGet(b.duplicate(), 13);
relGet(b.duplicate().slice(), 13);
relGet(b.slice(), 13);
relGet(b.slice().duplicate(), 13);
// Slice
b.position(5);
ByteBuffer sb = b.slice();
checkSlice(b, sb);
b.position(0);
ByteBuffer sb2 = sb.slice();
checkSlice(sb, sb2);
if (!sb.equals(sb2))
fail("Sliced slices do not match", sb, sb2);
if ((sb.hasArray()) && (sb.arrayOffset() != sb2.arrayOffset())) {
fail("Array offsets do not match: "
+ sb.arrayOffset() + " != " + sb2.arrayOffset(), sb, sb2);
}
int bPos = b.position();
int bLim = b.limit();
b.position(7);
b.limit(42);
ByteBuffer rsb = b.slice();
b.position(0);
b.limit(b.capacity());
ByteBuffer asb = b.slice(7, 35);
checkSlice(rsb, asb);
b.position(bPos);
b.limit(bLim);
// Views
b.clear();
b.order(ByteOrder.BIG_ENDIAN);
testViews(level + 1, b, direct);
for (int i = 1; i <= 9; i++) {
b.position(i);
show(level + 1, b);
testViews(level + 2, b, direct);
}
b.position(0);
b.order(ByteOrder.LITTLE_ENDIAN);
testViews(level + 1, b, direct);
// Heterogeneous accessors
b.order(ByteOrder.BIG_ENDIAN);
for (int i = 0; i <= 9; i++) {
b.position(i);
testHet(level + 1, b);
}
b.order(ByteOrder.LITTLE_ENDIAN);
b.position(3);
testHet(level + 1, b);
// Read-only views
b.rewind();
final ByteBuffer rb = b.asReadOnlyBuffer();
if (!b.equals(rb))
fail("Buffer not equal to read-only view", b, rb);
show(level + 1, rb);
catchReadOnlyBuffer(b, () -> relPut(rb));
catchReadOnlyBuffer(b, () -> absPut(rb));
catchReadOnlyBuffer(b, () -> bulkPutArray(rb));
catchReadOnlyBuffer(b, () -> bulkPutBuffer(rb));
catchReadOnlyBuffer(b, () -> absBulkPutArray(rb));
// put(ByteBuffer) should not change source position
final ByteBuffer src = ByteBuffer.allocate(1);
catchReadOnlyBuffer(b, () -> rb.put(src));
ck(src, src.position(), 0);
catchReadOnlyBuffer(b, () -> rb.compact());
catchReadOnlyBuffer(b, () -> rb.putChar((char)1));
catchReadOnlyBuffer(b, () -> rb.putChar(0, (char)1));
catchReadOnlyBuffer(b, () -> rb.putShort((short)1));
catchReadOnlyBuffer(b, () -> rb.putShort(0, (short)1));
catchReadOnlyBuffer(b, () -> rb.putInt(1));
catchReadOnlyBuffer(b, () -> rb.putInt(0, 1));
catchReadOnlyBuffer(b, () -> rb.putLong((long)1));
catchReadOnlyBuffer(b, () -> rb.putLong(0, (long)1));
catchReadOnlyBuffer(b, () -> rb.putFloat((float)1));
catchReadOnlyBuffer(b, () -> rb.putFloat(0, (float)1));
catchReadOnlyBuffer(b, () -> rb.putDouble((double)1));
catchReadOnlyBuffer(b, () -> rb.putDouble(0, (double)1));
if (rb.getClass().getName().startsWith("java.nio.Heap")) {
catchReadOnlyBuffer(b, () -> rb.array());
catchReadOnlyBuffer(b, () -> rb.arrayOffset());
if (rb.hasArray()) {
fail("Read-only heap buffer's backing array is accessible", rb);
}
}
// Bulk puts from read-only buffers
b.clear();
rb.rewind();
b.put(rb);
// For byte buffers, test both the direct and non-direct cases
ByteBuffer ob
= (b.isDirect()
? ByteBuffer.allocate(rb.capacity())
: ByteBuffer.allocateDirect(rb.capacity()));
rb.rewind();
ob.put(rb);
relPut(b); // Required by testViews
// Test alignment
testAlign(b, direct);
}
public static void test(final byte [] ba) {
int offset = 47;
int length = 900;
final ByteBuffer b = ByteBuffer.wrap(ba, offset, length);
show(0, b);
ck(b, b.capacity(), ba.length);
ck(b, b.position(), offset);
ck(b, b.limit(), offset + length);
// The offset must be non-negative and no larger than <array.length>.
catchIndexOutOfBounds(ba, () -> ByteBuffer.wrap(ba, -1, ba.length));
catchIndexOutOfBounds(ba, () -> ByteBuffer.wrap(ba, ba.length + 1, ba.length));
catchIndexOutOfBounds(ba, () -> ByteBuffer.wrap(ba, 0, -1));
catchIndexOutOfBounds(ba, () -> ByteBuffer.wrap(ba, 0, ba.length + 1));
// A NullPointerException will be thrown if the array is null.
tryCatch(ba, NullPointerException.class,
() -> ByteBuffer.wrap((byte []) null, 0, 5));
tryCatch(ba, NullPointerException.class,
() -> ByteBuffer.wrap((byte []) null));
}
private static void testAllocate() {
// An IllegalArgumentException will be thrown for negative capacities.
catchIllegalArgument((Buffer) null, () -> ByteBuffer.allocate(-1));
try {
ByteBuffer.allocate(-1);
} catch (IllegalArgumentException e) {
if (e.getMessage() == null) {
fail("Non-null IllegalArgumentException message expected for"
+ " attempt to allocate negative capacity buffer");
}
}
catchIllegalArgument((Buffer) null, () -> ByteBuffer.allocateDirect(-1));
try {
ByteBuffer.allocateDirect(-1);
} catch (IllegalArgumentException e) {
if (e.getMessage() == null) {
fail("Non-null IllegalArgumentException message expected for"
+ " attempt to allocate negative capacity direct buffer");
}
}
}
public static void testToString() {
final int cap = 10;
ByteBuffer direct1 = ByteBuffer.allocateDirect(cap);
if (!direct1.toString().equals(Basic.toString(direct1))) {
fail("Direct buffer toString is incorrect: "
+ direct1.toString() + " vs " + Basic.toString(direct1));
}
ByteBuffer nondirect1 = ByteBuffer.allocate(cap);
if (!nondirect1.toString().equals(Basic.toString(nondirect1))) {
fail("Heap buffer toString is incorrect: "
+ nondirect1.toString() + " vs " + Basic.toString(nondirect1));
}
}
public static void test() {
testAllocate();
test(0, ByteBuffer.allocate(7 * 1024), false);
test(0, ByteBuffer.wrap(new byte[7 * 1024], 0, 7 * 1024), false);
test(new byte[1024]);
ByteBuffer b = ByteBuffer.allocateDirect(7 * 1024);
for (b.position(0); b.position() < b.limit(); )
ck(b, b.get(), 0);
test(0, b, true);
callReset(ByteBuffer.allocate(10));
testToString();
}
}
¤ Dauer der Verarbeitung: 0.75 Sekunden
(vorverarbeitet)
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