/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.mina.core.buffer;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.nio.BufferOverflowException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.ReadOnlyBufferException;
import java.nio.charset.CharacterCodingException;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;
import java.util.ArrayList;
import java.util.Date;
import java.util.EnumSet;
import java.util.List;
import org.apache.mina.util.Bar;
import org.junit.Test;
/**
* Tests {@link IoBuffer}.
*
* @author <a href="http://mina.apache.org">Apache MINA Project</a>
*/
public class IoBufferTest {
private static interface NonserializableInterface {
}
public static class NonserializableClass {
}
@Test
public void testNormalizeCapacity() {
// A few sanity checks
assertEquals(Integer.MAX_VALUE, IoBufferImpl.normalizeCapacity(-10));
assertEquals(0, IoBufferImpl.normalizeCapacity(0));
assertEquals(Integer.MAX_VALUE, IoBufferImpl.normalizeCapacity(Integer.MAX_VALUE));
assertEquals(Integer.MAX_VALUE, IoBufferImpl.normalizeCapacity(Integer.MIN_VALUE));
assertEquals(Integer.MAX_VALUE, IoBufferImpl.normalizeCapacity(Integer.MAX_VALUE - 10));
// A sanity check test for all the powers of 2
for (int i = 0; i < 30; i++) {
int n = 1 << i;
assertEquals(n, IoBufferImpl.normalizeCapacity(n));
if (i > 1) {
// test that n - 1 will be normalized to n (notice that n = 2^i)
assertEquals(n, IoBufferImpl.normalizeCapacity(n - 1));
}
// test that n + 1 will be normalized to 2^(i + 1)
assertEquals(n << 1, IoBufferImpl.normalizeCapacity(n + 1));
}
// The first performance test measures the time to normalize integers
// from 0 to 2^27 (it tests 2^27 integers)
long time = System.currentTimeMillis();
for (int i = 0; i < 1 << 27; i++) {
int n = IoBufferImpl.normalizeCapacity(i);
// do a simple superfluous test to prevent possible compiler or JVM
// optimizations of not executing non used code/variables
if (n == -1) {
System.out.println("n should never be -1");
}
}
long time2 = System.currentTimeMillis();
//System.out.println("Time for performance test 1: " + (time2 - time) + "ms");
// The second performance test measures the time to normalize integers
// from Integer.MAX_VALUE to Integer.MAX_VALUE - 2^27 (it tests 2^27
// integers)
time = System.currentTimeMillis();
for (int i = Integer.MAX_VALUE; i > Integer.MAX_VALUE - (1 << 27); i--) {
int n = IoBufferImpl.normalizeCapacity(i);
// do a simple superfluous test to prevent possible compiler or JVM
// optimizations of not executing non used code/variables
if (n == -1) {
System.out.println("n should never be -1");
}
}
time2 = System.currentTimeMillis();
//System.out.println("Time for performance test 2: " + (time2 - time) + "ms");
}
@Test
public void autoExpand() {
IoBuffer buffer = IoBuffer.allocate(8, false);
buffer.setAutoExpand(true);
assertTrue("Should AutoExpand", buffer.isAutoExpand());
IoBuffer slice = buffer.slice();
assertFalse("Should *NOT* AutoExpand", buffer.isAutoExpand());
assertFalse("Should *NOT* AutoExpand", slice.isAutoExpand());
}
/**
* This class extends the AbstractIoBuffer class to have direct access to
* the protected IoBuffer.normalizeCapacity() method and to expose it for
* the tests.
*/
private static class IoBufferImpl extends AbstractIoBuffer {
public static int normalizeCapacity(int requestedCapacity) {
return IoBuffer.normalizeCapacity(requestedCapacity);
}
protected IoBufferImpl(AbstractIoBuffer parent) {
super(parent);
}
protected IoBuffer asReadOnlyBuffer0() {
return null;
}
protected void buf(ByteBuffer newBuf) {
}
protected IoBuffer duplicate0() {
return null;
}
protected IoBuffer slice0() {
return null;
}
public byte[] array() {
return null;
}
public int arrayOffset() {
return 0;
}
public ByteBuffer buf() {
return null;
}
public void free() {
}
public boolean hasArray() {
return false;
}
}
@Test
public void testObjectSerialization() throws Exception {
IoBuffer buf = IoBuffer.allocate(16);
buf.setAutoExpand(true);
List<Object> o = new ArrayList<Object>();
o.add(new Date());
o.add(long.class);
// Test writing an object.
buf.putObject(o);
// Test reading an object.
buf.clear();
Object o2 = buf.getObject();
assertEquals(o, o2);
// This assertion is just to make sure that deserialization occurred.
assertNotSame(o, o2);
}
@Test
public void testNonserializableClass() throws Exception {
Class<?> c = NonserializableClass.class;
IoBuffer buffer = IoBuffer.allocate(16);
buffer.setAutoExpand(true);
buffer.putObject(c);
buffer.flip();
Object o = buffer.getObject();
assertEquals(c, o);
assertSame(c, o);
}
@Test
public void testNonserializableInterface() throws Exception {
Class<?> c = NonserializableInterface.class;
IoBuffer buffer = IoBuffer.allocate(16);
buffer.setAutoExpand(true);
buffer.putObject(c);
buffer.flip();
Object o = buffer.getObject();
assertEquals(c, o);
assertSame(c, o);
}
@Test
public void testAllocate() throws Exception {
for (int i = 10; i < 1048576 * 2; i = i * 11 / 10) // increase by 10%
{
IoBuffer buf = IoBuffer.allocate(i);
assertEquals(0, buf.position());
assertEquals(buf.capacity(), buf.remaining());
assertTrue(buf.capacity() >= i);
assertTrue(buf.capacity() < i * 2);
}
}
@Test
public void testAutoExpand() throws Exception {
IoBuffer buf = IoBuffer.allocate(1);
buf.put((byte) 0);
try {
buf.put((byte) 0);
fail("Buffer can't auto expand, with autoExpand property set at false");
} catch (BufferOverflowException e) {
// Expected Exception as auto expand property is false
assertTrue(true);
}
buf.setAutoExpand(true);
buf.put((byte) 0);
assertEquals(2, buf.position());
assertEquals(2, buf.limit());
assertEquals(2, buf.capacity());
buf.setAutoExpand(false);
try {
buf.put(3, (byte) 0);
fail("Buffer can't auto expand, with autoExpand property set at false");
} catch (IndexOutOfBoundsException e) {
// Expected Exception as auto expand property is false
assertTrue(true);
}
buf.setAutoExpand(true);
buf.put(3, (byte) 0);
assertEquals(2, buf.position());
assertEquals(4, buf.limit());
assertEquals(4, buf.capacity());
// Make sure the buffer is doubled up.
buf = IoBuffer.allocate(1).setAutoExpand(true);
int lastCapacity = buf.capacity();
for (int i = 0; i < 1048576; i++) {
buf.put((byte) 0);
if (lastCapacity != buf.capacity()) {
assertEquals(lastCapacity * 2, buf.capacity());
lastCapacity = buf.capacity();
}
}
}
@Test
public void testAutoExpandMark() throws Exception {
IoBuffer buf = IoBuffer.allocate(4).setAutoExpand(true);
buf.put((byte) 0);
buf.put((byte) 0);
buf.put((byte) 0);
// Position should be 3 when we reset this buffer.
buf.mark();
// Overflow it
buf.put((byte) 0);
buf.put((byte) 0);
assertEquals(5, buf.position());
buf.reset();
assertEquals(3, buf.position());
}
@Test
public void testAutoShrink() throws Exception {
IoBuffer buf = IoBuffer.allocate(8).setAutoShrink(true);
// Make sure the buffer doesn't shrink too much (less than the initial
// capacity.)
buf.sweep((byte) 1);
buf.fill(7);
buf.compact();
assertEquals(8, buf.capacity());
assertEquals(1, buf.position());
assertEquals(8, buf.limit());
buf.clear();
assertEquals(1, buf.get());
// Expand the buffer.
buf.capacity(32).clear();
assertEquals(32, buf.capacity());
// Make sure the buffer shrinks when only 1/4 is being used.
buf.sweep((byte) 1);
buf.fill(24);
buf.compact();
assertEquals(16, buf.capacity());
assertEquals(8, buf.position());
assertEquals(16, buf.limit());
buf.clear();
for (int i = 0; i < 8; i++) {
assertEquals(1, buf.get());
}
// Expand the buffer.
buf.capacity(32).clear();
assertEquals(32, buf.capacity());
// Make sure the buffer shrinks when only 1/8 is being used.
buf.sweep((byte) 1);
buf.fill(28);
buf.compact();
assertEquals(8, buf.capacity());
assertEquals(4, buf.position());
assertEquals(8, buf.limit());
buf.clear();
for (int i = 0; i < 4; i++) {
assertEquals(1, buf.get());
}
// Expand the buffer.
buf.capacity(32).clear();
assertEquals(32, buf.capacity());
// Make sure the buffer shrinks when 0 byte is being used.
buf.fill(32);
buf.compact();
assertEquals(8, buf.capacity());
assertEquals(0, buf.position());
assertEquals(8, buf.limit());
// Expand the buffer.
buf.capacity(32).clear();
assertEquals(32, buf.capacity());
// Make sure the buffer doesn't shrink when more than 1/4 is being used.
buf.sweep((byte) 1);
buf.fill(23);
buf.compact();
assertEquals(32, buf.capacity());
assertEquals(9, buf.position());
assertEquals(32, buf.limit());
buf.clear();
for (int i = 0; i < 9; i++) {
assertEquals(1, buf.get());
}
}
@Test
public void testGetString() throws Exception {
IoBuffer buf = IoBuffer.allocate(16);
CharsetDecoder decoder;
Charset charset = Charset.forName("UTF-8");
buf.clear();
buf.putString("hello", charset.newEncoder());
buf.put((byte) 0);
buf.flip();
assertEquals("hello", buf.getString(charset.newDecoder()));
buf.clear();
buf.putString("hello", charset.newEncoder());
buf.flip();
assertEquals("hello", buf.getString(charset.newDecoder()));
decoder = Charset.forName("ISO-8859-1").newDecoder();
buf.clear();
buf.put((byte) 'A');
buf.put((byte) 'B');
buf.put((byte) 'C');
buf.put((byte) 0);
buf.position(0);
assertEquals("ABC", buf.getString(decoder));
assertEquals(4, buf.position());
buf.position(0);
buf.limit(1);
assertEquals("A", buf.getString(decoder));
assertEquals(1, buf.position());
buf.clear();
assertEquals("ABC", buf.getString(10, decoder));
assertEquals(10, buf.position());
buf.clear();
assertEquals("A", buf.getString(1, decoder));
assertEquals(1, buf.position());
// Test a trailing garbage
buf.clear();
buf.put((byte) 'A');
buf.put((byte) 'B');
buf.put((byte) 0);
buf.put((byte) 'C');
buf.position(0);
assertEquals("AB", buf.getString(4, decoder));
assertEquals(4, buf.position());
buf.clear();
buf.fillAndReset(buf.limit());
decoder = Charset.forName("UTF-16").newDecoder();
buf.put((byte) 0);
buf.put((byte) 'A');
buf.put((byte) 0);
buf.put((byte) 'B');
buf.put((byte) 0);
buf.put((byte) 'C');
buf.put((byte) 0);
buf.put((byte) 0);
buf.position(0);
assertEquals("ABC", buf.getString(decoder));
assertEquals(8, buf.position());
buf.position(0);
buf.limit(2);
assertEquals("A", buf.getString(decoder));
assertEquals(2, buf.position());
buf.position(0);
buf.limit(3);
assertEquals("A", buf.getString(decoder));
assertEquals(2, buf.position());
buf.clear();
assertEquals("ABC", buf.getString(10, decoder));
assertEquals(10, buf.position());
buf.clear();
assertEquals("A", buf.getString(2, decoder));
assertEquals(2, buf.position());
buf.clear();
try {
buf.getString(1, decoder);
fail();
} catch (IllegalArgumentException e) {
// Expected an Exception, signifies test success
assertTrue(true);
}
// Test getting strings from an empty buffer.
buf.clear();
buf.limit(0);
assertEquals("", buf.getString(decoder));
assertEquals("", buf.getString(2, decoder));
// Test getting strings from non-empty buffer which is filled with 0x00
buf.clear();
buf.putInt(0);
buf.clear();
buf.limit(4);
assertEquals("", buf.getString(decoder));
assertEquals(2, buf.position());
assertEquals(4, buf.limit());
buf.position(0);
assertEquals("", buf.getString(2, decoder));
assertEquals(2, buf.position());
assertEquals(4, buf.limit());
}
@Test
public void testGetStringWithFailure() throws Exception {
String test = "\u30b3\u30e1\u30f3\u30c8\u7de8\u96c6";
IoBuffer buffer = IoBuffer.wrap(test.getBytes("Shift_JIS"));
// Make sure the limit doesn't change when an exception arose.
int oldLimit = buffer.limit();
int oldPos = buffer.position();
try {
buffer.getString(3, Charset.forName("ASCII").newDecoder());
fail();
} catch (Exception e) {
assertEquals(oldLimit, buffer.limit());
assertEquals(oldPos, buffer.position());
}
try {
buffer.getString(Charset.forName("ASCII").newDecoder());
fail();
} catch (Exception e) {
assertEquals(oldLimit, buffer.limit());
assertEquals(oldPos, buffer.position());
}
}
@Test
public void testPutString() throws Exception {
CharsetEncoder encoder;
IoBuffer buf = IoBuffer.allocate(16);
encoder = Charset.forName("ISO-8859-1").newEncoder();
buf.putString("ABC", encoder);
assertEquals(3, buf.position());
buf.clear();
assertEquals('A', buf.get(0));
assertEquals('B', buf.get(1));
assertEquals('C', buf.get(2));
buf.putString("D", 5, encoder);
assertEquals(5, buf.position());
buf.clear();
assertEquals('D', buf.get(0));
assertEquals(0, buf.get(1));
buf.putString("EFG", 2, encoder);
assertEquals(2, buf.position());
buf.clear();
assertEquals('E', buf.get(0));
assertEquals('F', buf.get(1));
assertEquals('C', buf.get(2)); // C may not be overwritten
// UTF-16: We specify byte order to omit BOM.
encoder = Charset.forName("UTF-16BE").newEncoder();
buf.clear();
buf.putString("ABC", encoder);
assertEquals(6, buf.position());
buf.clear();
assertEquals(0, buf.get(0));
assertEquals('A', buf.get(1));
assertEquals(0, buf.get(2));
assertEquals('B', buf.get(3));
assertEquals(0, buf.get(4));
assertEquals('C', buf.get(5));
buf.putString("D", 10, encoder);
assertEquals(10, buf.position());
buf.clear();
assertEquals(0, buf.get(0));
assertEquals('D', buf.get(1));
assertEquals(0, buf.get(2));
assertEquals(0, buf.get(3));
buf.putString("EFG", 4, encoder);
assertEquals(4, buf.position());
buf.clear();
assertEquals(0, buf.get(0));
assertEquals('E', buf.get(1));
assertEquals(0, buf.get(2));
assertEquals('F', buf.get(3));
assertEquals(0, buf.get(4)); // C may not be overwritten
assertEquals('C', buf.get(5)); // C may not be overwritten
// Test putting an emptry string
buf.putString("", encoder);
assertEquals(0, buf.position());
buf.putString("", 4, encoder);
assertEquals(4, buf.position());
assertEquals(0, buf.get(0));
assertEquals(0, buf.get(1));
}
@Test
public void testGetPrefixedString() throws Exception {
IoBuffer buf = IoBuffer.allocate(16);
CharsetEncoder encoder;
CharsetDecoder decoder;
encoder = Charset.forName("ISO-8859-1").newEncoder();
decoder = Charset.forName("ISO-8859-1").newDecoder();
buf.putShort((short) 3);
buf.putString("ABCD", encoder);
buf.clear();
assertEquals("ABC", buf.getPrefixedString(decoder));
}
@Test
public void testPutPrefixedString() throws Exception {
CharsetEncoder encoder;
IoBuffer buf = IoBuffer.allocate(16);
buf.fillAndReset(buf.remaining());
encoder = Charset.forName("ISO-8859-1").newEncoder();
// Without autoExpand
buf.putPrefixedString("ABC", encoder);
assertEquals(5, buf.position());
assertEquals(0, buf.get(0));
assertEquals(3, buf.get(1));
assertEquals('A', buf.get(2));
assertEquals('B', buf.get(3));
assertEquals('C', buf.get(4));
buf.clear();
try {
buf.putPrefixedString("123456789012345", encoder);
fail();
} catch (BufferOverflowException e) {
// Expected an Exception, signifies test success
assertTrue(true);
}
// With autoExpand
buf.clear();
buf.setAutoExpand(true);
buf.putPrefixedString("123456789012345", encoder);
assertEquals(17, buf.position());
assertEquals(0, buf.get(0));
assertEquals(15, buf.get(1));
assertEquals('1', buf.get(2));
assertEquals('2', buf.get(3));
assertEquals('3', buf.get(4));
assertEquals('4', buf.get(5));
assertEquals('5', buf.get(6));
assertEquals('6', buf.get(7));
assertEquals('7', buf.get(8));
assertEquals('8', buf.get(9));
assertEquals('9', buf.get(10));
assertEquals('0', buf.get(11));
assertEquals('1', buf.get(12));
assertEquals('2', buf.get(13));
assertEquals('3', buf.get(14));
assertEquals('4', buf.get(15));
assertEquals('5', buf.get(16));
}
@Test
public void testPutPrefixedStringWithPrefixLength() throws Exception {
CharsetEncoder encoder = Charset.forName("ISO-8859-1").newEncoder();
IoBuffer buf = IoBuffer.allocate(16).sweep().setAutoExpand(true);
buf.putPrefixedString("A", 1, encoder);
assertEquals(2, buf.position());
assertEquals(1, buf.get(0));
assertEquals('A', buf.get(1));
buf.sweep();
buf.putPrefixedString("A", 2, encoder);
assertEquals(3, buf.position());
assertEquals(0, buf.get(0));
assertEquals(1, buf.get(1));
assertEquals('A', buf.get(2));
buf.sweep();
buf.putPrefixedString("A", 4, encoder);
assertEquals(5, buf.position());
assertEquals(0, buf.get(0));
assertEquals(0, buf.get(1));
assertEquals(0, buf.get(2));
assertEquals(1, buf.get(3));
assertEquals('A', buf.get(4));
}
@Test
public void testPutPrefixedStringWithPadding() throws Exception {
CharsetEncoder encoder = Charset.forName("ISO-8859-1").newEncoder();
IoBuffer buf = IoBuffer.allocate(16).sweep().setAutoExpand(true);
buf.putPrefixedString("A", 1, 2, (byte) 32, encoder);
assertEquals(3, buf.position());
assertEquals(2, buf.get(0));
assertEquals('A', buf.get(1));
assertEquals(' ', buf.get(2));
buf.sweep();
buf.putPrefixedString("A", 1, 4, (byte) 32, encoder);
assertEquals(5, buf.position());
assertEquals(4, buf.get(0));
assertEquals('A', buf.get(1));
assertEquals(' ', buf.get(2));
assertEquals(' ', buf.get(3));
assertEquals(' ', buf.get(4));
}
@Test
public void testWideUtf8Characters() throws Exception {
Runnable r = new Runnable() {
public void run() {
IoBuffer buffer = IoBuffer.allocate(1);
buffer.setAutoExpand(true);
Charset charset = Charset.forName("UTF-8");
CharsetEncoder encoder = charset.newEncoder();
for (int i = 0; i < 5; i++) {
try {
buffer.putString("\u89d2", encoder);
buffer.putPrefixedString("\u89d2", encoder);
} catch (CharacterCodingException e) {
fail(e.getMessage());
}
}
}
};
Thread t = new Thread(r);
t.setDaemon(true);
t.start();
for (int i = 0; i < 50; i++) {
Thread.sleep(100);
if (!t.isAlive()) {
break;
}
}
if (t.isAlive()) {
t.interrupt();
fail("Went into endless loop trying to encode character");
}
}
@Test
public void testInheritedObjectSerialization() throws Exception {
IoBuffer buf = IoBuffer.allocate(16);
buf.setAutoExpand(true);
Bar expected = new Bar();
expected.setFooValue(0x12345678);
expected.setBarValue(0x90ABCDEF);
// Test writing an object.
buf.putObject(expected);
// Test reading an object.
buf.clear();
Bar actual = (Bar) buf.getObject();
assertSame(Bar.class, actual.getClass());
assertEquals(expected.getFooValue(), actual.getFooValue());
assertEquals(expected.getBarValue(), actual.getBarValue());
// This assertion is just to make sure that deserialization occurred.
assertNotSame(expected, actual);
}
@Test
public void testSweepWithZeros() throws Exception {
IoBuffer buf = IoBuffer.allocate(4);
buf.putInt(0xdeadbeef);
buf.clear();
assertEquals(0xdeadbeef, buf.getInt());
assertEquals(4, buf.position());
assertEquals(4, buf.limit());
buf.sweep();
assertEquals(0, buf.position());
assertEquals(4, buf.limit());
assertEquals(0x0, buf.getInt());
}
@Test
public void testSweepNonZeros() throws Exception {
IoBuffer buf = IoBuffer.allocate(4);
buf.putInt(0xdeadbeef);
buf.clear();
assertEquals(0xdeadbeef, buf.getInt());
assertEquals(4, buf.position());
assertEquals(4, buf.limit());
buf.sweep((byte) 0x45);
assertEquals(0, buf.position());
assertEquals(4, buf.limit());
assertEquals(0x45454545, buf.getInt());
}
@Test
public void testWrapNioBuffer() throws Exception {
ByteBuffer nioBuf = ByteBuffer.allocate(10);
nioBuf.position(3);
nioBuf.limit(7);
IoBuffer buf = IoBuffer.wrap(nioBuf);
assertEquals(3, buf.position());
assertEquals(7, buf.limit());
assertEquals(10, buf.capacity());
}
@Test
public void testWrapSubArray() throws Exception {
byte[] array = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
IoBuffer buf = IoBuffer.wrap(array, 3, 4);
assertEquals(3, buf.position());
assertEquals(7, buf.limit());
assertEquals(10, buf.capacity());
buf.clear();
assertEquals(0, buf.position());
assertEquals(10, buf.limit());
assertEquals(10, buf.capacity());
}
@Test
public void testDuplicate() throws Exception {
IoBuffer original;
IoBuffer duplicate;
// Test if the buffer is duplicated correctly.
original = IoBuffer.allocate(16).sweep();
original.position(4);
original.limit(10);
duplicate = original.duplicate();
original.put(4, (byte) 127);
assertEquals(4, duplicate.position());
assertEquals(10, duplicate.limit());
assertEquals(16, duplicate.capacity());
assertNotSame(original.buf(), duplicate.buf());
assertSame(original.buf().array(), duplicate.buf().array());
assertEquals(127, duplicate.get(4));
// Test a duplicate of a duplicate.
original = IoBuffer.allocate(16);
duplicate = original.duplicate().duplicate();
assertNotSame(original.buf(), duplicate.buf());
assertSame(original.buf().array(), duplicate.buf().array());
// Try to expand.
original = IoBuffer.allocate(16);
original.setAutoExpand(true);
duplicate = original.duplicate();
assertFalse(original.isAutoExpand());
try {
original.setAutoExpand(true);
fail("Derived buffers and their parent can't be expanded");
} catch (IllegalStateException e) {
// Expected an Exception, signifies test success
assertTrue(true);
}
try {
duplicate.setAutoExpand(true);
fail("Derived buffers and their parent can't be expanded");
} catch (IllegalStateException e) {
// Expected an Exception, signifies test success
assertTrue(true);
}
}
@Test
public void testSlice() throws Exception {
IoBuffer original;
IoBuffer slice;
// Test if the buffer is sliced correctly.
original = IoBuffer.allocate(16).sweep();
original.position(4);
original.limit(10);
slice = original.slice();
original.put(4, (byte) 127);
assertEquals(0, slice.position());
assertEquals(6, slice.limit());
assertEquals(6, slice.capacity());
assertNotSame(original.buf(), slice.buf());
assertEquals(127, slice.get(0));
}
@Test
public void testReadOnlyBuffer() throws Exception {
IoBuffer original;
IoBuffer duplicate;
// Test if the buffer is duplicated correctly.
original = IoBuffer.allocate(16).sweep();
original.position(4);
original.limit(10);
duplicate = original.asReadOnlyBuffer();
original.put(4, (byte) 127);
assertEquals(4, duplicate.position());
assertEquals(10, duplicate.limit());
assertEquals(16, duplicate.capacity());
assertNotSame(original.buf(), duplicate.buf());
assertEquals(127, duplicate.get(4));
// Try to expand.
try {
original = IoBuffer.allocate(16);
duplicate = original.asReadOnlyBuffer();
duplicate.putString("A very very very very looooooong string", Charset.forName("ISO-8859-1").newEncoder());
fail("ReadOnly buffer's can't be expanded");
} catch (ReadOnlyBufferException e) {
// Expected an Exception, signifies test success
assertTrue(true);
}
}
@Test
public void testGetUnsigned() throws Exception {
IoBuffer buf = IoBuffer.allocate(16);
buf.put((byte) 0xA4);
buf.put((byte) 0xD0);
buf.put((byte) 0xB3);
buf.put((byte) 0xCD);
buf.flip();
buf.order(ByteOrder.LITTLE_ENDIAN);
buf.mark();
assertEquals(0xA4, buf.getUnsigned());
buf.reset();
assertEquals(0xD0A4, buf.getUnsignedShort());
buf.reset();
assertEquals(0xCDB3D0A4L, buf.getUnsignedInt());
}
@Test
public void testIndexOf() throws Exception {
boolean direct = false;
for (int i = 0; i < 2; i++, direct = !direct) {
IoBuffer buf = IoBuffer.allocate(16, direct);
buf.put((byte) 0x1);
buf.put((byte) 0x2);
buf.put((byte) 0x3);
buf.put((byte) 0x4);
buf.put((byte) 0x1);
buf.put((byte) 0x2);
buf.put((byte) 0x3);
buf.put((byte) 0x4);
buf.position(2);
buf.limit(5);
assertEquals(4, buf.indexOf((byte) 0x1));
assertEquals(-1, buf.indexOf((byte) 0x2));
assertEquals(2, buf.indexOf((byte) 0x3));
assertEquals(3, buf.indexOf((byte) 0x4));
}
}
// We need an enum with 64 values
private static enum TestEnum {
E1, E2, E3, E4, E5, E6, E7, E8, E9, E10, E11, E12, E13, E14, E15, E16, E17, E18, E19, E20, E21, E22, E23, E24, E25, E26, E27, E28, E29, E30, E31, E32, E33, E34, E35, E36, E37, E38, E39, E40, E41, E42, E43, E44, E45, E46, E77, E48, E49, E50, E51, E52, E53, E54, E55, E56, E57, E58, E59, E60, E61, E62, E63, E64
}
private static enum TooBigEnum {
E1, E2, E3, E4, E5, E6, E7, E8, E9, E10, E11, E12, E13, E14, E15, E16, E17, E18, E19, E20, E21, E22, E23, E24, E25, E26, E27, E28, E29, E30, E31, E32, E33, E34, E35, E36, E37, E38, E39, E40, E41, E42, E43, E44, E45, E46, E77, E48, E49, E50, E51, E52, E53, E54, E55, E56, E57, E58, E59, E60, E61, E62, E63, E64, E65
}
@Test
public void testPutEnumSet() {
IoBuffer buf = IoBuffer.allocate(8);
// Test empty set
buf.putEnumSet(EnumSet.noneOf(TestEnum.class));
buf.flip();
assertEquals(0, buf.get());
buf.clear();
buf.putEnumSetShort(EnumSet.noneOf(TestEnum.class));
buf.flip();
assertEquals(0, buf.getShort());
buf.clear();
buf.putEnumSetInt(EnumSet.noneOf(TestEnum.class));
buf.flip();
assertEquals(0, buf.getInt());
buf.clear();
buf.putEnumSetLong(EnumSet.noneOf(TestEnum.class));
buf.flip();
assertEquals(0, buf.getLong());
// Test complete set
buf.clear();
buf.putEnumSet(EnumSet.range(TestEnum.E1, TestEnum.E8));
buf.flip();
assertEquals((byte) -1, buf.get());
buf.clear();
buf.putEnumSetShort(EnumSet.range(TestEnum.E1, TestEnum.E16));
buf.flip();
assertEquals((short) -1, buf.getShort());
buf.clear();
buf.putEnumSetInt(EnumSet.range(TestEnum.E1, TestEnum.E32));
buf.flip();
assertEquals(-1, buf.getInt());
buf.clear();
buf.putEnumSetLong(EnumSet.allOf(TestEnum.class));
buf.flip();
assertEquals(-1L, buf.getLong());
// Test high bit set
buf.clear();
buf.putEnumSet(EnumSet.of(TestEnum.E8));
buf.flip();
assertEquals(Byte.MIN_VALUE, buf.get());
buf.clear();
buf.putEnumSetShort(EnumSet.of(TestEnum.E16));
buf.flip();
assertEquals(Short.MIN_VALUE, buf.getShort());
buf.clear();
buf.putEnumSetInt(EnumSet.of(TestEnum.E32));
buf.flip();
assertEquals(Integer.MIN_VALUE, buf.getInt());
buf.clear();
buf.putEnumSetLong(EnumSet.of(TestEnum.E64));
buf.flip();
assertEquals(Long.MIN_VALUE, buf.getLong());
// Test high low bits set
buf.clear();
buf.putEnumSet(EnumSet.of(TestEnum.E1, TestEnum.E8));
buf.flip();
assertEquals(Byte.MIN_VALUE + 1, buf.get());
buf.clear();
buf.putEnumSetShort(EnumSet.of(TestEnum.E1, TestEnum.E16));
buf.flip();
assertEquals(Short.MIN_VALUE + 1, buf.getShort());
buf.clear();
buf.putEnumSetInt(EnumSet.of(TestEnum.E1, TestEnum.E32));
buf.flip();
assertEquals(Integer.MIN_VALUE + 1, buf.getInt());
buf.clear();
buf.putEnumSetLong(EnumSet.of(TestEnum.E1, TestEnum.E64));
buf.flip();
assertEquals(Long.MIN_VALUE + 1, buf.getLong());
}
@Test
public void testGetEnumSet() {
IoBuffer buf = IoBuffer.allocate(8);
// Test empty set
buf.put((byte) 0);
buf.flip();
assertEquals(EnumSet.noneOf(TestEnum.class), buf.getEnumSet(TestEnum.class));
buf.clear();
buf.putShort((short) 0);
buf.flip();
assertEquals(EnumSet.noneOf(TestEnum.class), buf.getEnumSet(TestEnum.class));
buf.clear();
buf.putInt(0);
buf.flip();
assertEquals(EnumSet.noneOf(TestEnum.class), buf.getEnumSet(TestEnum.class));
buf.clear();
buf.putLong(0L);
buf.flip();
assertEquals(EnumSet.noneOf(TestEnum.class), buf.getEnumSet(TestEnum.class));
// Test complete set
buf.clear();
buf.put((byte) -1);
buf.flip();
assertEquals(EnumSet.range(TestEnum.E1, TestEnum.E8), buf.getEnumSet(TestEnum.class));
buf.clear();
buf.putShort((short) -1);
buf.flip();
assertEquals(EnumSet.range(TestEnum.E1, TestEnum.E16), buf.getEnumSetShort(TestEnum.class));
buf.clear();
buf.putInt(-1);
buf.flip();
assertEquals(EnumSet.range(TestEnum.E1, TestEnum.E32), buf.getEnumSetInt(TestEnum.class));
buf.clear();
buf.putLong(-1L);
buf.flip();
assertEquals(EnumSet.allOf(TestEnum.class), buf.getEnumSetLong(TestEnum.class));
// Test high bit set
buf.clear();
buf.put(Byte.MIN_VALUE);
buf.flip();
assertEquals(EnumSet.of(TestEnum.E8), buf.getEnumSet(TestEnum.class));
buf.clear();
buf.putShort(Short.MIN_VALUE);
buf.flip();
assertEquals(EnumSet.of(TestEnum.E16), buf.getEnumSetShort(TestEnum.class));
buf.clear();
buf.putInt(Integer.MIN_VALUE);
buf.flip();
assertEquals(EnumSet.of(TestEnum.E32), buf.getEnumSetInt(TestEnum.class));
buf.clear();
buf.putLong(Long.MIN_VALUE);
buf.flip();
assertEquals(EnumSet.of(TestEnum.E64), buf.getEnumSetLong(TestEnum.class));
// Test high low bits set
buf.clear();
byte b = Byte.MIN_VALUE + 1;
buf.put(b);
buf.flip();
assertEquals(EnumSet.of(TestEnum.E1, TestEnum.E8), buf.getEnumSet(TestEnum.class));
buf.clear();
short s = Short.MIN_VALUE + 1;
buf.putShort(s);
buf.flip();
assertEquals(EnumSet.of(TestEnum.E1, TestEnum.E16), buf.getEnumSetShort(TestEnum.class));
buf.clear();
buf.putInt(Integer.MIN_VALUE + 1);
buf.flip();
assertEquals(EnumSet.of(TestEnum.E1, TestEnum.E32), buf.getEnumSetInt(TestEnum.class));
buf.clear();
buf.putLong(Long.MIN_VALUE + 1);
buf.flip();
assertEquals(EnumSet.of(TestEnum.E1, TestEnum.E64), buf.getEnumSetLong(TestEnum.class));
}
@Test
public void testBitVectorOverFlow() {
IoBuffer buf = IoBuffer.allocate(8);
try {
buf.putEnumSet(EnumSet.of(TestEnum.E9));
fail("Should have thrown IllegalArgumentException");
} catch (IllegalArgumentException e) {
// Expected an Exception, signifies test success
assertTrue(true);
}
try {
buf.putEnumSetShort(EnumSet.of(TestEnum.E17));
fail("Should have thrown IllegalArgumentException");
} catch (IllegalArgumentException e) {
// Expected an Exception, signifies test success
assertTrue(true);
}
try {
buf.putEnumSetInt(EnumSet.of(TestEnum.E33));
fail("Should have thrown IllegalArgumentException");
} catch (IllegalArgumentException e) {
// Expected an Exception, signifies test success
assertTrue(true);
}
try {
buf.putEnumSetLong(EnumSet.of(TooBigEnum.E65));
fail("Should have thrown IllegalArgumentException");
} catch (IllegalArgumentException e) {
// Expected an Exception, signifies test success
assertTrue(true);
}
}
@Test
public void testGetPutEnum() {
IoBuffer buf = IoBuffer.allocate(4);
buf.putEnum(TestEnum.E64);
buf.flip();
assertEquals(TestEnum.E64, buf.getEnum(TestEnum.class));
buf.clear();
buf.putEnumShort(TestEnum.E64);
buf.flip();
assertEquals(TestEnum.E64, buf.getEnumShort(TestEnum.class));
buf.clear();
buf.putEnumInt(TestEnum.E64);
buf.flip();
assertEquals(TestEnum.E64, buf.getEnumInt(TestEnum.class));
}
@Test
public void testGetMediumInt() {
IoBuffer buf = IoBuffer.allocate(3);
buf.put((byte) 0x01);
buf.put((byte) 0x02);
buf.put((byte) 0x03);
assertEquals(3, buf.position());
buf.flip();
assertEquals(0x010203, buf.getMediumInt());
assertEquals(0x010203, buf.getMediumInt(0));
buf.flip();
assertEquals(0x010203, buf.getUnsignedMediumInt());
assertEquals(0x010203, buf.getUnsignedMediumInt(0));
buf.flip();
assertEquals(0x010203, buf.getUnsignedMediumInt());
buf.flip().order(ByteOrder.LITTLE_ENDIAN);
assertEquals(0x030201, buf.getMediumInt());
assertEquals(0x030201, buf.getMediumInt(0));
// Test max medium int
buf.flip().order(ByteOrder.BIG_ENDIAN);
buf.put((byte) 0x7f);
buf.put((byte) 0xff);
buf.put((byte) 0xff);
buf.flip();
assertEquals(0x7fffff, buf.getMediumInt());
assertEquals(0x7fffff, buf.getMediumInt(0));
// Test negative number
buf.flip().order(ByteOrder.BIG_ENDIAN);
buf.put((byte) 0xff);
buf.put((byte) 0x02);
buf.put((byte) 0x03);
buf.flip();
assertEquals(0xffff0203, buf.getMediumInt());
assertEquals(0xffff0203, buf.getMediumInt(0));
buf.flip();
assertEquals(0x00ff0203, buf.getUnsignedMediumInt());
assertEquals(0x00ff0203, buf.getUnsignedMediumInt(0));
}
@Test
public void testPutMediumInt() {
IoBuffer buf = IoBuffer.allocate(3);
checkMediumInt(buf, 0);
checkMediumInt(buf, 1);
checkMediumInt(buf, -1);
checkMediumInt(buf, 0x7fffff);
}
private void checkMediumInt(IoBuffer buf, int x) {
buf.putMediumInt(x);
assertEquals(3, buf.position());
buf.flip();
assertEquals(x, buf.getMediumInt());
assertEquals(3, buf.position());
buf.putMediumInt(0, x);
assertEquals(3, buf.position());
assertEquals(x, buf.getMediumInt(0));
buf.flip();
}
@Test
public void testPutUnsigned() {
IoBuffer buf = IoBuffer.allocate(4);
byte b = (byte) 0x80; // We should get 0x0080
short s = (short) 0x8F81; // We should get 0x0081
int i = 0x8FFFFF82; // We should get 0x0082
long l = 0x8FFFFFFFFFFFFF83L; // We should get 0x0083
buf.mark();
// Put the unsigned bytes
buf.putUnsigned(b);
buf.putUnsigned(s);
buf.putUnsigned(i);
buf.putUnsigned(l);
buf.reset();
// Read back the unsigned bytes
assertEquals(0x0080, buf.getUnsigned());
assertEquals(0x0081, buf.getUnsigned());
assertEquals(0x0082, buf.getUnsigned());
assertEquals(0x0083, buf.getUnsigned());
}
@Test
public void testPutUnsignedIndex() {
IoBuffer buf = IoBuffer.allocate(4);
byte b = (byte) 0x80; // We should get 0x0080
short s = (short) 0x8F81; // We should get 0x0081
int i = 0x8FFFFF82; // We should get 0x0082
long l = 0x8FFFFFFFFFFFFF83L; // We should get 0x0083
buf.mark();
// Put the unsigned bytes
buf.putUnsigned(3, b);
buf.putUnsigned(2, s);
buf.putUnsigned(1, i);
buf.putUnsigned(0, l);
buf.reset();
// Read back the unsigned bytes
assertEquals(0x0083, buf.getUnsigned());
assertEquals(0x0082, buf.getUnsigned());
assertEquals(0x0081, buf.getUnsigned());
assertEquals(0x0080, buf.getUnsigned());
}
@Test
public void testPutUnsignedShort() {
IoBuffer buf = IoBuffer.allocate(8);
byte b = (byte) 0x80; // We should get 0x0080
short s = (short) 0x8181; // We should get 0x8181
int i = 0x82828282; // We should get 0x8282
long l = 0x8383838383838383L; // We should get 0x8383
buf.mark();
// Put the unsigned bytes
buf.putUnsignedShort(b);
buf.putUnsignedShort(s);
buf.putUnsignedShort(i);
buf.putUnsignedShort(l);
buf.reset();
// Read back the unsigned bytes
assertEquals(0x0080L, buf.getUnsignedShort());
assertEquals(0x8181L, buf.getUnsignedShort());
assertEquals(0x8282L, buf.getUnsignedShort());
assertEquals(0x8383L, buf.getUnsignedShort());
}
@Test
public void testPutUnsignedShortIndex() {
IoBuffer buf = IoBuffer.allocate(8);
byte b = (byte) 0x80; // We should get 0x00000080
short s = (short) 0x8181; // We should get 0x00008181
int i = 0x82828282; // We should get 0x82828282
long l = 0x8383838383838383L; // We should get 0x83838383
buf.mark();
// Put the unsigned shorts
buf.putUnsignedShort(6, b);
buf.putUnsignedShort(4, s);
buf.putUnsignedShort(2, i);
buf.putUnsignedShort(0, l);
buf.reset();
// Read back the unsigned bytes
assertEquals(0x8383L, buf.getUnsignedShort());
assertEquals(0x8282L, buf.getUnsignedShort());
assertEquals(0x8181L, buf.getUnsignedShort());
assertEquals(0x0080L, buf.getUnsignedShort());
}
@Test
public void testPutUnsignedInt() {
IoBuffer buf = IoBuffer.allocate(16);
byte b = (byte) 0x80; // We should get 0x00000080
short s = (short) 0x8181; // We should get 0x00008181
int i = 0x82828282; // We should get 0x82828282
long l = 0x8383838383838383L; // We should get 0x83838383
buf.mark();
// Put the unsigned bytes
buf.putUnsignedInt(b);
buf.putUnsignedInt(s);
buf.putUnsignedInt(i);
buf.putUnsignedInt(l);
buf.reset();
// Read back the unsigned bytes
assertEquals(0x0000000000000080L, buf.getUnsignedInt());
assertEquals(0x0000000000008181L, buf.getUnsignedInt());
assertEquals(0x0000000082828282L, buf.getUnsignedInt());
assertEquals(0x0000000083838383L, buf.getUnsignedInt());
}
@Test
public void testPutUnsignedIntIndex() {
IoBuffer buf = IoBuffer.allocate(16);
byte b = (byte) 0x80; // We should get 0x00000080
short s = (short) 0x8181; // We should get 0x00008181
int i = 0x82828282; // We should get 0x82828282
long l = 0x8383838383838383L; // We should get 0x83838383
buf.mark();
// Put the unsigned bytes
buf.putUnsignedInt(12, b);
buf.putUnsignedInt(8, s);
buf.putUnsignedInt(4, i);
buf.putUnsignedInt(0, l);
buf.reset();
// Read back the unsigned bytes
assertEquals(0x0000000083838383L, buf.getUnsignedInt());
assertEquals(0x0000000082828282L, buf.getUnsignedInt());
assertEquals(0x0000000000008181L, buf.getUnsignedInt());
assertEquals(0x0000000000000080L, buf.getUnsignedInt());
}
/**
* Test the getSlice method (even if we haven't flipped the buffer
*/
@Test
public void testGetSlice() {
IoBuffer buf = IoBuffer.allocate(36);
for (byte i = 0; i < 36; i++) {
buf.put(i);
}
IoBuffer res = buf.getSlice(1, 3);
// The limit should be 3, the pos should be 0 and the bytes read
// should be 0x01, 0x02 and 0x03
assertEquals(0, res.position());
assertEquals(3, res.limit());
assertEquals(0x01, res.get());
assertEquals(0x02, res.get());
assertEquals(0x03, res.get());
// Now test after a flip
buf.flip();
res = buf.getSlice(1, 3);
// The limit should be 3, the pos should be 0 and the bytes read
// should be 0x01, 0x02 and 0x03
assertEquals(0, res.position());
assertEquals(3, res.limit());
assertEquals(0x01, res.get());
assertEquals(0x02, res.get());
assertEquals(0x03, res.get());
}
}