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/**
* Copyright 2010 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
/*
* Created on Sunday, July 04 2010 20:00
*/
package com.jogamp.common.nio;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.DoubleBuffer;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import java.nio.LongBuffer;
import java.nio.ShortBuffer;
import org.junit.Test;
import com.jogamp.junit.util.SingletonJunitCase;
import static org.junit.Assert.*;
/**
* @author Michael Bien
*/
import org.junit.FixMethodOrder;
import org.junit.runners.MethodSorters;
@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public class BuffersTest extends SingletonJunitCase {
@Test
public void positionLimitCapacityAfterArrayAllocation() {
byte[] byteData = { 1, 2, 3, 4, 5, 6, 7, 8 };
final ByteBuffer byteBuffer = Buffers.newDirectByteBuffer(byteData);
assertEquals(0, byteBuffer.position());
assertEquals(8, byteBuffer.limit());
assertEquals(8, byteBuffer.capacity());
assertEquals(5, byteBuffer.get(4));
double[] doubleData = { 1, 2 };
final DoubleBuffer doubleBuffer = Buffers.newDirectDoubleBuffer(doubleData);
assertEquals(0, doubleBuffer.position());
assertEquals(2, doubleBuffer.limit());
assertEquals(2, doubleBuffer.capacity());
float[] floatData = { 1.0f, 2.0f, 3.0f };
final FloatBuffer floatBuffer = Buffers.newDirectFloatBuffer(floatData);
assertEquals(0, floatBuffer.position());
assertEquals(3, floatBuffer.limit());
assertEquals(3, floatBuffer.capacity());
int[] intData = { 1, 2, 3, 4 };
final IntBuffer intBuffer = Buffers.newDirectIntBuffer(intData);
assertEquals(0, intBuffer.position());
assertEquals(4, intBuffer.limit());
assertEquals(4, intBuffer.capacity());
assertEquals(3, intBuffer.get(2));
long[] longData = { 1, 2, 3, 4, 5 };
final LongBuffer longBuffer = Buffers.newDirectLongBuffer(longData);
assertEquals(0, longBuffer.position());
assertEquals(5, longBuffer.limit());
assertEquals(5, longBuffer.capacity());
assertEquals(4, longBuffer.get(3));
short[] shortData = { 1, 2, 3, 4, 5, 6 };
final ShortBuffer shortBuffer = Buffers.newDirectShortBuffer(shortData);
assertEquals(0, shortBuffer.position());
assertEquals(6, shortBuffer.limit());
assertEquals(6, shortBuffer.capacity());
assertEquals(4, shortBuffer.get(3));
char[] charData = { 1, 2, 3, 4, 5, 6, 7 };
final CharBuffer charBuffer = Buffers.newDirectCharBuffer(charData);
assertEquals(0, charBuffer.position());
assertEquals(7, charBuffer.limit());
assertEquals(7, charBuffer.capacity());
assertEquals(6, charBuffer.get(5));
}
@Test
public void slice() {
final IntBuffer buffer = Buffers.newDirectIntBuffer(6);
buffer.put(new int[]{1,2,3,4,5,6}).rewind();
final IntBuffer threefour = Buffers.slice(buffer, 2, 2);
assertEquals(3, threefour.get(0));
assertEquals(4, threefour.get(1));
assertEquals(2, threefour.capacity());
assertEquals(0, buffer.position());
assertEquals(6, buffer.limit());
final IntBuffer fourfivesix = Buffers.slice(buffer, 3, 3);
assertEquals(4, fourfivesix.get(0));
assertEquals(5, fourfivesix.get(1));
assertEquals(6, fourfivesix.get(2));
assertEquals(3, fourfivesix.capacity());
assertEquals(0, buffer.position());
assertEquals(6, buffer.limit());
final IntBuffer onetwothree = Buffers.slice(buffer, 0, 3);
assertEquals(1, onetwothree.get(0));
assertEquals(2, onetwothree.get(1));
assertEquals(3, onetwothree.get(2));
assertEquals(3, onetwothree.capacity());
assertEquals(0, buffer.position());
assertEquals(6, buffer.limit());
// is it really sliced?
buffer.put(2, 42);
assertEquals(42, buffer.get(2));
assertEquals(42, onetwothree.get(2));
}
}
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