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/*
* Copyright 2007 - 2018 ETH Zuerich, CISD and SIS.
*
* Licensed 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 ch.systemsx.cisd.base.io;
import java.io.IOException;
import java.nio.ByteOrder;
import java.nio.charset.Charset;
import org.apache.commons.io.IOUtils;
import org.testng.annotations.Test;
import ch.systemsx.cisd.base.convert.NativeData;
import ch.systemsx.cisd.base.tests.AbstractFileSystemTestCase;
/**
* Test cases for {@link IRandomAccessFile} implementations.
*
* @author Bernd Rinn
*/
public abstract class IRandomAccessFileTests extends AbstractFileSystemTestCase
{
abstract protected IRandomAccessFile createRandomAccessFile(String name);
abstract protected IRandomAccessFile createRandomAccessFile(String name, byte[] content);
@Test
public void testSkip()
{
final IRandomAccessFile raf = createRandomAccessFile("testSkip");
final byte[] b = new byte[4096];
for (int i = 0; i < b.length; ++i)
{
b[i] = (byte) i;
}
raf.write(b);
raf.seek(0);
assertEquals(509, raf.skip(509));
assertEquals(509, raf.getFilePointer());
assertEquals(-3, raf.readByte());
assertEquals(4096 - 509 - 1, raf.skip(4096));
assertEquals(4096, raf.getFilePointer());
raf.close();
}
@Test
public void testLongByteOrder()
{
final IRandomAccessFile raf = createRandomAccessFile("testLongByteOrder");
raf.writeLong(1);
final byte[] buf = new byte[8];
raf.seek(0);
raf.read(buf);
// Default is big endian
assertEquals(0, buf[0]);
assertEquals(1, buf[7]);
raf.seek(0);
raf.setByteOrder(ByteOrder.LITTLE_ENDIAN);
raf.writeLong(1);
raf.seek(0);
raf.read(buf);
assertEquals(1, buf[0]);
assertEquals(0, buf[7]);
raf.close();
}
@Test
public void testMark()
{
final IRandomAccessFile raf = createRandomAccessFile("testMark");
final byte[] buf = new byte[128];
raf.write(buf);
raf.seek(0);
assertTrue(raf.markSupported());
raf.mark(0);
raf.read();
assertEquals(1, raf.getFilePointer());
raf.reset();
assertEquals(0, raf.getFilePointer());
raf.read();
raf.read();
raf.read();
raf.mark(0);
raf.read();
raf.read();
raf.read();
raf.reset();
assertEquals(3, raf.getFilePointer());
raf.close();
}
@Test
public void testWriteReadByte()
{
final IRandomAccessFile raf = createRandomAccessFile("testWriteReadByte");
raf.write(254);
raf.seek(0);
assertEquals(-2, raf.readByte());
raf.seek(0);
assertEquals(254, raf.read());
raf.seek(0);
assertEquals(254, raf.readUnsignedByte());
raf.close();
}
@Test
public void testWriteReadShort()
{
final IRandomAccessFile raf = createRandomAccessFile("testWriteReadShort");
raf.writeShort(65534);
raf.seek(0);
assertEquals(-2, raf.readShort());
raf.seek(0);
assertEquals(65534, raf.readUnsignedShort());
raf.close();
}
@Test
public void testAvailable()
{
final IRandomAccessFile raf = createRandomAccessFile("testAvailable");
assertEquals(0, raf.available());
raf.writeDouble(5.5);
raf.seek(0);
assertEquals(8, raf.available());
raf.close();
}
@Test
public void testWriteReadStringBytes()
{
final String s = "teststring";
final IRandomAccessFile raf = createRandomAccessFile("testWriteReadStringBytes");
raf.writeBytes(s);
raf.seek(0);
assertEquals(s.length(), raf.available());
final byte[] buf = new byte[raf.available()];
raf.read(buf);
assertEquals(s, new String(buf));
raf.close();
}
@Test
public void testWriteReadStringChars()
{
final String s = "teststring";
final IRandomAccessFile raf = createRandomAccessFile("testWriteReadStringChars");
raf.writeChars(s);
raf.seek(0);
assertEquals(2 * s.length(), raf.available());
final byte[] buf = new byte[raf.available()];
raf.read(buf);
assertEquals(
s,
new String(NativeData.byteToChar(buf,
ch.systemsx.cisd.base.convert.NativeData.ByteOrder.BIG_ENDIAN)));
raf.close();
}
@Test
public void testReadLine() throws IOException
{
final byte[] bytes = "hello world".getBytes();
final IRandomAccessFile raf = createRandomAccessFile("testWriteReadStringChars", bytes);
final AdapterIInputStreamToInputStream is = new AdapterIInputStreamToInputStream(raf);
assertEquals("[hello world]", IOUtils.readLines(is, Charset.defaultCharset()).toString());
raf.close();
}
@Test
public void testToByteArray() throws IOException
{
final byte[] bytes = "hello world".getBytes();
final IRandomAccessFile raf = createRandomAccessFile("testWriteReadStringChars", bytes);
final AdapterIInputStreamToInputStream is = new AdapterIInputStreamToInputStream(raf);
assertEquals(bytes, IOUtils.toByteArray(is));
raf.close();
}
}
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