/*
* Copyright (c) 2010-2012 LinkedIn, Inc
*
* 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 test.core.api;
import java.io.File;
import java.io.IOException;
import java.util.Random;
import test.util.FileUtils;
import junit.framework.TestCase;
import krati.core.array.basic.ArrayFile;
import krati.io.MultiMappedWriter;
import krati.util.Bytes;
/**
* TestArrayFile
*
* @author jwu
* 06/07, 2011
*
*/
public class TestArrayFile extends TestCase {
protected File _homeDir;
protected ArrayFile _arrayFile;
protected Random _rand = new Random();
@Override
protected void setUp() {
try {
_homeDir = FileUtils.getTestDir(getClass().getSimpleName());
_arrayFile = createArrayFile(_homeDir);
} catch(Exception e) {
e.printStackTrace();
}
}
@Override
protected void tearDown() {
try {
FileUtils.deleteDirectory(_homeDir);
} catch(Exception e) {
e.printStackTrace();
} finally {
_homeDir = null;
_arrayFile = null;
}
}
protected ArrayFile createArrayFile(File homeDir) throws IOException {
File file = new File(homeDir, "indexes.dat");
return new ArrayFile(file, 1 << 16, Bytes.NUM_BYTES_IN_LONG);
}
public void testArrayLength() throws IOException {
int length = 0;
length = 1 << 26;
_arrayFile.setArrayLength(length, null);
assertEquals(length, _arrayFile.getArrayLength());
length = 1 << 27;
_arrayFile.setArrayLength(length, null);
assertEquals(length, _arrayFile.getArrayLength());
length = 1 << 28;
_arrayFile.setArrayLength(length, null);
assertEquals(length, _arrayFile.getArrayLength());
length = 1 << 29;
_arrayFile.setArrayLength(length, null);
assertEquals(length, _arrayFile.getArrayLength());
length = 1 << 30;
_arrayFile.setArrayLength(length, null);
assertEquals(length, _arrayFile.getArrayLength());
length = Integer.MAX_VALUE;
_arrayFile.setArrayLength(length, null);
assertEquals(length, _arrayFile.getArrayLength());
}
public void testMultiMappedWriter() throws IOException {
int unit = MultiMappedWriter.BUFFER_SIZE / _arrayFile.getElementSize();
int length = _arrayFile.getArrayLength() + _rand.nextInt(unit);
while(length > 0) {
_arrayFile.setArrayLength(length);
assertEquals(length, _arrayFile.getArrayLength());
writeRandomValues();
length += _rand.nextInt(unit);
}
}
private void writeRandomValues() throws IOException {
int length = _arrayFile.getArrayLength();
for (int i = 0; i < 1000; i++) {
int index = _rand.nextInt(length);
long value = _rand.nextLong();
_arrayFile.writeLong(index, value);
}
}
}