/*******************************************************************************
* Copyright 2010 Cees De Groot, Alex Boisvert, Jan Kotek
*
* 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 org.apache.jdbm;
import junit.framework.TestCase;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.nio.ByteBuffer;
/**
* This class contains all Unit tests for {@link PageIo}.
*/
public class PageIoTest extends TestCase {
private static final short SHORT_VALUE = 0x1234;
private static final int INT_VALUE = 0xe7b3c8a1;
private static final long LONG_VALUE = 0xfdebca9876543210L;
private static final long LONG_VALUE2 = 1231290495545446485L;
/**
* Test writing
*/
public void testWrite() throws Exception {
byte[] data = new byte[100];
PageIo test = new PageIo(0, data);
test.writeShort(0, SHORT_VALUE);
test.writeLong(2, LONG_VALUE);
test.writeInt(10, INT_VALUE);
test.writeLong(14, LONG_VALUE2);
DataInputStream is =
new DataInputStream(new ByteArrayInputStream(data));
assertEquals("short", SHORT_VALUE, is.readShort());
assertEquals("long", LONG_VALUE, is.readLong());
assertEquals("int", INT_VALUE, is.readInt());
assertEquals("long", LONG_VALUE2, is.readLong());
assertEquals("short", SHORT_VALUE, test.readShort(0));
assertEquals("long", LONG_VALUE, test.readLong(2));
assertEquals("int", INT_VALUE, test.readInt(10));
assertEquals("long", LONG_VALUE2, test.readLong(14));
}
/**
* Test reading
*/
public void testRead() throws Exception {
ByteArrayOutputStream bos = new ByteArrayOutputStream(100);
DataOutputStream os = new DataOutputStream(bos);
os.writeShort(SHORT_VALUE);
os.writeLong(LONG_VALUE);
os.writeInt(INT_VALUE);
os.writeLong(LONG_VALUE2);
byte[] data = bos.toByteArray();
PageIo test = new PageIo(0, data);
assertEquals("short", SHORT_VALUE, test.readShort(0));
assertEquals("long", LONG_VALUE, test.readLong(2));
assertEquals("int", INT_VALUE, test.readInt(10));
assertEquals("long", LONG_VALUE2, test.readLong(14));
}
public void testNegativeSixByte(){
PageIo t = new PageIo(0, ByteBuffer.allocate(Storage.PAGE_SIZE));
t.writeSixByteLong(0,-11111);
assertEquals(-11111,t.readSixByteLong(0));
t.writeSixByteLong(0,11111);
assertEquals(11111,t.readSixByteLong(0));
}
public void testPageHeaderSetWriteRead() throws Exception {
PageIo data = new PageIo(0, new byte[Storage.PAGE_SIZE]);
data.writeShort(0, Magic.PAGE_MAGIC);
data.pageHeaderSetNext(10);
data.pageHeaderSetPrev(33);
assertEquals("next", 10, data.pageHeaderGetNext());
assertEquals("prev", 33, data.pageHeaderGetPrev());
}
}