/*
* TCircularBufferTestCase.java
*/
/*
* Copyright (c) 2001 - 2002 by Matthias Pfisterer <Matthias.Pfisterer@web.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.tritonus.test;
import junit.framework.TestCase;
import org.tritonus.share.TCircularBuffer;
public class TCircularBufferTestCase
extends TestCase
{
public TCircularBufferTestCase(String strName)
{
super(strName);
}
public void testBufferSize()
{
int nSize = 45678;
TCircularBuffer buffer = new TCircularBuffer(
nSize, false, false, null);
assertEquals("buffer size", nSize, buffer.availableWrite());
nSize = 0;
buffer = new TCircularBuffer(
nSize, false, false, null);
assertEquals("buffer size", nSize, buffer.availableWrite());
}
public void testAvailable()
{
int nBufferSize = 45678;
int nWriteSize1 = nBufferSize / 2;
int nWriteSize2 = nBufferSize / 5;
int nReadSize1 = nBufferSize / 10;
int nReadSize2 = nBufferSize / 3;
TCircularBuffer buffer = new TCircularBuffer(
nBufferSize, true, true, null);
assertEquals("availableWrite()", nBufferSize, buffer.availableWrite());
assertEquals("availableRead()", 0, buffer.availableRead());
buffer.write(new byte[nBufferSize]);
assertEquals("availableWrite()", 0, buffer.availableWrite());
assertEquals("availableRead()", nBufferSize, buffer.availableRead());
buffer.read(new byte[nBufferSize]);
assertEquals("availableWrite()", nBufferSize, buffer.availableWrite());
assertEquals("availableRead()", 0, buffer.availableRead());
buffer.write(new byte[nWriteSize1]);
assertEquals("availableWrite()", nBufferSize - nWriteSize1, buffer.availableWrite());
assertEquals("availableRead()", nWriteSize1, buffer.availableRead());
buffer.write(new byte[nWriteSize2]);
assertEquals("availableWrite()", nBufferSize - nWriteSize1 - nWriteSize2, buffer.availableWrite());
assertEquals("availableRead()", nWriteSize1 + nWriteSize2, buffer.availableRead());
buffer.read(new byte[nReadSize1]);
assertEquals("availableWrite()", nBufferSize - nWriteSize1 - nWriteSize2 + nReadSize1, buffer.availableWrite());
assertEquals("availableRead()", nWriteSize1 + nWriteSize2 - nReadSize1, buffer.availableRead());
buffer.read(new byte[nReadSize2]);
assertEquals("availableWrite()", nBufferSize - nWriteSize1 - nWriteSize2 + nReadSize1 + nReadSize2, buffer.availableWrite());
assertEquals("availableRead()", nWriteSize1 + nWriteSize2 - nReadSize1 - nReadSize2, buffer.availableRead());
}
public void testReadWrite()
{
int nBufferSize = 8901 * 4;
int nResult;
byte[] abWriteArray = new byte[nBufferSize];
byte[] abReadArray = new byte[nBufferSize];
TCircularBuffer buffer = new TCircularBuffer(
nBufferSize, true, true, null);
for (int i = 0 ; i < abWriteArray.length; i++)
{
abWriteArray[i] = (byte)(i % 256);
}
nResult = buffer.write(abWriteArray);
assertEquals("written length", abWriteArray.length, nResult);
nResult = buffer.read(abReadArray);
assertEquals("read length", abReadArray.length, nResult);
assertTrue("data content", Util.compareByteArrays(abReadArray, 0, abWriteArray, 0, abReadArray.length));
buffer.write(new byte[nBufferSize / 3]);
nResult = buffer.write(abWriteArray, nBufferSize / 4, nBufferSize / 2);
assertEquals("written length", nBufferSize / 2, nResult);
buffer.read(new byte[nBufferSize / 3]);
nResult = buffer.read(abReadArray, 0, nBufferSize / 2);
assertEquals("read length", nBufferSize / 2, nResult);
assertTrue("data content", Util.compareByteArrays(abReadArray, 0, abWriteArray, nBufferSize / 4, nBufferSize / 2));
}
public void testTrigger()
{
TestTrigger trigger = new TestTrigger();
int nBufferSize = 45678;
TCircularBuffer buffer = new TCircularBuffer(
nBufferSize, false, true, trigger);
buffer.read(new byte[10]);
assertTrue("trigger called", trigger.isCalled());
trigger.reset();
buffer.write(new byte[nBufferSize / 3]);
buffer.read(new byte[nBufferSize / 2]);
assertTrue("trigger called", trigger.isCalled());
}
public void testClose()
{
int nResult;
int nBufferSize = 45678;
TestTrigger trigger = new TestTrigger();
TCircularBuffer buffer = new TCircularBuffer(
nBufferSize, true, true, trigger);
buffer.write(new byte[nBufferSize / 2]);
assertEquals("availableWrite()", nBufferSize / 2, buffer.availableWrite());
assertEquals("availableRead()", nBufferSize / 2, buffer.availableRead());
buffer.close();
assertEquals("availableWrite()", nBufferSize / 2, buffer.availableWrite());
assertEquals("availableRead()", nBufferSize / 2, buffer.availableRead());
nResult = buffer.read(new byte[nBufferSize / 2]);
assertEquals("read length", nBufferSize / 2, nResult);
assertEquals("availableWrite()", nBufferSize, buffer.availableWrite());
assertEquals("availableRead()", 0, buffer.availableRead());
nResult = buffer.read(new byte[nBufferSize / 2]);
assertEquals("read length", -1, nResult);
assertTrue("trigger invocation", !trigger.isCalled());
}
private static class TestTrigger
implements TCircularBuffer.Trigger
{
private boolean m_bCalled = false;
public void execute()
{
m_bCalled = true;
}
public boolean isCalled()
{
return m_bCalled;
}
public void reset()
{
m_bCalled = false;
}
}
}
/*** TCircularBufferTestCase.java ***/