/*
* 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.set;
import java.io.File;
import java.io.IOException;
import java.util.Random;
import junit.framework.TestCase;
import krati.core.StoreConfig;
import krati.core.array.basic.DynamicConstants;
import krati.core.segment.ChannelSegmentFactory;
import krati.store.DynamicDataSet;
import test.util.DirUtils;
/**
* TestDynamicDataSetCapacity
*
* @author jwu
* @since 09/05, 2012
*/
public class TestDynamicDataSetCapacity extends TestCase {
protected Random _rand = new Random();
protected DynamicDataSet create(int initialCapacity) throws Exception {
File storeDir = DirUtils.getTestDir(getClass());
StoreConfig config = new StoreConfig(storeDir, initialCapacity);
config.setSegmentFactory(new ChannelSegmentFactory());
config.setSegmentFileSizeMB(16);
return new DynamicDataSet(config);
}
@Override
protected void tearDown() {
File storeDir = DirUtils.getTestDir(getClass());
try {
DirUtils.deleteDirectory(storeDir);
} catch (IOException e) {
e.printStackTrace();
}
}
protected void doInitialCapacity(int initialCapacity) throws Exception {
DynamicDataSet store = create(initialCapacity);
int capacity = store.capacity();
if(initialCapacity == DynamicConstants.SUB_ARRAY_SIZE) {
assertEquals(initialCapacity, capacity);
} else {
assertTrue(capacity >= initialCapacity);
}
store.close();
int initialCapacity2 = capacity + _rand.nextInt(capacity);
DynamicDataSet store2 = create(initialCapacity2);
assertEquals(capacity, store2.capacity());
store2.close();
int initialCapacity3 = capacity - _rand.nextInt(capacity);
DynamicDataSet store3 = create(initialCapacity3);
assertEquals(capacity, store3.capacity());
store3.close();
}
public void testInitialCapacity1() throws Exception {
doInitialCapacity(DynamicConstants.SUB_ARRAY_SIZE);
}
public void testInitialCapacity2() throws Exception {
doInitialCapacity(DynamicConstants.SUB_ARRAY_SIZE + _rand.nextInt(1000000));
}
public void testInitialCapacity3() throws Exception {
doInitialCapacity(DynamicConstants.SUB_ARRAY_SIZE - _rand.nextInt(10000));
}
protected void doInitialCapacityLevel(int initLevel) throws Exception {
int initialCapacity = DynamicConstants.SUB_ARRAY_SIZE << initLevel;
DynamicDataSet store = create(initialCapacity);
int capacity = store.capacity();
assertEquals(initialCapacity, capacity);
store.close();
int initialCapacity2 = capacity + _rand.nextInt(capacity);
DynamicDataSet store2 = create(initialCapacity2);
assertEquals(capacity, store2.capacity());
store2.close();
int initialCapacity3 = capacity - _rand.nextInt(capacity);
DynamicDataSet store3 = create(initialCapacity3);
assertEquals(capacity, store3.capacity());
store3.close();
}
public void testInitialCapacityLevel0() throws Exception {
doInitialCapacityLevel(0);
}
public void testInitialCapacityLevelX() throws Exception {
doInitialCapacityLevel(_rand.nextInt(10));
}
}