Java example source code file (BasicInt.java)
The BasicInt.java Java example source code/*
* Copyright (c) 2000, 2012, 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.nio.*;
import java.lang.reflect.Method;
public class BasicInt
extends Basic
{
private static final int[] VALUES = {
Integer.MIN_VALUE,
(int) -1,
(int) 0,
(int) 1,
Integer.MAX_VALUE,
};
private static void relGet(IntBuffer b) {
int n = b.capacity();
int v;
for (int i = 0; i < n; i++)
ck(b, (long)b.get(), (long)((int)ic(i)));
b.rewind();
}
private static void relGet(IntBuffer b, int start) {
int n = b.remaining();
int v;
for (int i = start; i < n; i++)
ck(b, (long)b.get(), (long)((int)ic(i)));
b.rewind();
}
private static void absGet(IntBuffer b) {
int n = b.capacity();
int v;
for (int i = 0; i < n; i++)
ck(b, (long)b.get(), (long)((int)ic(i)));
b.rewind();
}
private static void bulkGet(IntBuffer b) {
int n = b.capacity();
int[] a = new int[n + 7];
b.get(a, 7, n);
for (int i = 0; i < n; i++)
ck(b, (long)a[i + 7], (long)((int)ic(i)));
}
private static void relPut(IntBuffer b) {
int n = b.capacity();
b.clear();
for (int i = 0; i < n; i++)
b.put((int)ic(i));
b.flip();
}
private static void absPut(IntBuffer b) {
int n = b.capacity();
b.clear();
for (int i = 0; i < n; i++)
b.put(i, (int)ic(i));
b.limit(n);
b.position(0);
}
private static void bulkPutArray(IntBuffer b) {
int n = b.capacity();
b.clear();
int[] a = new int[n + 7];
for (int i = 0; i < n; i++)
a[i + 7] = (int)ic(i);
b.put(a, 7, n);
b.flip();
}
private static void bulkPutBuffer(IntBuffer b) {
int n = b.capacity();
b.clear();
IntBuffer c = IntBuffer.allocate(n + 7);
c.position(7);
for (int i = 0; i < n; i++)
c.put((int)ic(i));
c.flip();
c.position(7);
b.put(c);
b.flip();
}
//6231529
private static void callReset(IntBuffer b) {
b.position(0);
b.mark();
b.duplicate().reset();
b.asReadOnlyBuffer().reset();
}
// 6221101-6234263
private static void putBuffer() {
final int cap = 10;
IntBuffer direct1 = ByteBuffer.allocateDirect(cap).asIntBuffer();
IntBuffer nondirect1 = ByteBuffer.allocate(cap).asIntBuffer();
direct1.put(nondirect1);
IntBuffer direct2 = ByteBuffer.allocateDirect(cap).asIntBuffer();
IntBuffer nondirect2 = ByteBuffer.allocate(cap).asIntBuffer();
nondirect2.put(direct2);
IntBuffer direct3 = ByteBuffer.allocateDirect(cap).asIntBuffer();
IntBuffer direct4 = ByteBuffer.allocateDirect(cap).asIntBuffer();
direct3.put(direct4);
IntBuffer nondirect3 = ByteBuffer.allocate(cap).asIntBuffer();
IntBuffer nondirect4 = ByteBuffer.allocate(cap).asIntBuffer();
nondirect3.put(nondirect4);
}
private static void checkSlice(IntBuffer b, IntBuffer 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 fail(String problem,
IntBuffer xb, IntBuffer yb,
int x, int y) {
fail(problem + String.format(": x=%s y=%s", x, y), xb, yb);
}
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 {
fail(x.getMessage() + " not expected");
}
}
if (!caught)
fail(ex.getName() + " not thrown", b);
}
private static void tryCatch(int [] t, Class<?> ex, Runnable thunk) {
tryCatch(IntBuffer.wrap(t), ex, thunk);
}
public static void test(int level, final IntBuffer 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);
// 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, new Runnable() {
public void run() {
b.get();
}});
tryCatch(b, BufferOverflowException.class, new Runnable() {
public void run() {
b.put((int)42);
}});
// The index must be non-negative and lesss than the buffer's limit.
tryCatch(b, IndexOutOfBoundsException.class, new Runnable() {
public void run() {
b.get(b.limit());
}});
tryCatch(b, IndexOutOfBoundsException.class, new Runnable() {
public void run() {
b.get(-1);
}});
tryCatch(b, IndexOutOfBoundsException.class, new Runnable() {
public void run() {
b.put(b.limit(), (int)42);
}});
tryCatch(b, InvalidMarkException.class, new Runnable() {
public void run() {
b.position(0);
b.mark();
b.compact();
b.reset();
}});
// Values
b.clear();
b.put((int)0);
b.put((int)-1);
b.put((int)1);
b.put(Integer.MAX_VALUE);
b.put(Integer.MIN_VALUE);
int v;
b.flip();
ck(b, b.get(), 0);
ck(b, b.get(), (int)-1);
ck(b, b.get(), 1);
ck(b, b.get(), Integer.MAX_VALUE);
ck(b, b.get(), Integer.MIN_VALUE);
// Comparison
b.rewind();
IntBuffer b2 = IntBuffer.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++) {
int x = b.get(i);
int 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((int)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, (int)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 (int x : VALUES) {
IntBuffer xb = IntBuffer.wrap(new int[] { 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 (int y : VALUES) {
IntBuffer yb = IntBuffer.wrap(new int[] { 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) != Integer.compare(x, y)) {
fail("Incorrect results for IntBuffer.compareTo",
xb, yb, x, y);
}
if (xb.equals(yb) != ((x == y) || ((x != x) && (y != y)))) {
fail("Incorrect results for IntBuffer.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);
IntBuffer sb = b.slice();
checkSlice(b, sb);
b.position(0);
IntBuffer 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);
// Read-only views
b.rewind();
final IntBuffer rb = b.asReadOnlyBuffer();
if (!b.equals(rb))
fail("Buffer not equal to read-only view", b, rb);
show(level + 1, rb);
tryCatch(b, ReadOnlyBufferException.class, new Runnable() {
public void run() {
relPut(rb);
}});
tryCatch(b, ReadOnlyBufferException.class, new Runnable() {
public void run() {
absPut(rb);
}});
tryCatch(b, ReadOnlyBufferException.class, new Runnable() {
public void run() {
bulkPutArray(rb);
}});
tryCatch(b, ReadOnlyBufferException.class, new Runnable() {
public void run() {
bulkPutBuffer(rb);
}});
// put(IntBuffer) should not change source position
final IntBuffer src = IntBuffer.allocate(1);
tryCatch(b, ReadOnlyBufferException.class, new Runnable() {
public void run() {
rb.put(src);
}});
ck(src, src.position(), 0);
tryCatch(b, ReadOnlyBufferException.class, new Runnable() {
public void run() {
rb.compact();
}});
if (rb.getClass().getName().startsWith("java.nio.Heap")) {
tryCatch(b, ReadOnlyBufferException.class, new Runnable() {
public void run() {
rb.array();
}});
tryCatch(b, ReadOnlyBufferException.class, new Runnable() {
public void run() {
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);
relPut(b); // Required by testViews
}
public static void test(final int [] ba) {
int offset = 47;
int length = 900;
final IntBuffer b = IntBuffer.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>.
tryCatch(ba, IndexOutOfBoundsException.class, new Runnable() {
public void run() {
IntBuffer.wrap(ba, -1, ba.length);
}});
tryCatch(ba, IndexOutOfBoundsException.class, new Runnable() {
public void run() {
IntBuffer.wrap(ba, ba.length + 1, ba.length);
}});
tryCatch(ba, IndexOutOfBoundsException.class, new Runnable() {
public void run() {
IntBuffer.wrap(ba, 0, -1);
}});
tryCatch(ba, IndexOutOfBoundsException.class, new Runnable() {
public void run() {
IntBuffer.wrap(ba, 0, ba.length + 1);
}});
// A NullPointerException will be thrown if the array is null.
tryCatch(ba, NullPointerException.class, new Runnable() {
public void run() {
IntBuffer.wrap((int []) null, 0, 5);
}});
tryCatch(ba, NullPointerException.class, new Runnable() {
public void run() {
IntBuffer.wrap((int []) null);
}});
}
private static void testAllocate() {
// An IllegalArgumentException will be thrown for negative capacities.
tryCatch((Buffer) null, IllegalArgumentException.class, new Runnable() {
public void run() {
IntBuffer.allocate(-1);
}});
}
public static void test() {
testAllocate();
test(0, IntBuffer.allocate(7 * 1024), false);
test(0, IntBuffer.wrap(new int[7 * 1024], 0, 7 * 1024), false);
test(new int[1024]);
callReset(IntBuffer.allocate(10));
putBuffer();
}
}
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