/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.jackrabbit.core.query.lucene;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import javax.jcr.RepositoryException;
import javax.jcr.Value;
import junit.framework.TestCase;
import org.apache.jackrabbit.value.ValueFactoryImpl;
import org.junit.Test;
public class UtilTest extends TestCase {
public void testComparableContract(){
//The test data needs to be greater than 32 in length to trigger TimSort
//The data was obtained by running multiple runs with random sequence
//and then reverse engineered from it :)
Integer[] data = {null,25,21,5,null,23,10,19,10,null,null,10,24,null,10,null,7,11,
null,7,null,14,26,0,6,19,null,5,null,4,28,19,5,28,18,14,12,16,14,15};
List<Value[]> testData = createValueArrayList(data);
Collections.sort(testData, new ValueArrayComparator());
}
private static List<Value[]> createValueArrayList(Integer[] data){
List<Value[]> result = new ArrayList<Value[]>(data.length);
for(Integer i : data){
Value[] r = null;
if(i != null){
r = new Value[]{ValueFactoryImpl.getInstance().createValue(i.longValue())};
}
result.add(r);
}
return result;
}
private static class ValueArrayComparator implements Comparator<Value[]> {
@Override
public int compare(Value[] a, Value[] b) {
try {
return Util.compare(a, b);
} catch (RepositoryException e) {
throw new RuntimeException("Unable to compare values "
+ Arrays.toString(a) + " and " + Arrays.toString(b), e);
}
}
}
}