/**
* 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.blur.filter;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import java.io.IOException;
import java.util.Random;
import org.apache.lucene.search.DocIdSetIterator;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.util.FixedBitSet;
import org.junit.Before;
import org.junit.Test;
public class IndexFileBitSetTest {
private long _seed;
@Before
public void setup() {
Random random = new Random();
_seed = random.nextLong();
}
@Test
public void test() throws IOException {
Random random = new Random(_seed);
int numBits = random.nextInt(10000000);
FixedBitSet fixedBitSet = new FixedBitSet(numBits);
populate(random, numBits, fixedBitSet);
String id = "id";
String segmentName = "seg1";
RAMDirectory directory = new RAMDirectory();
IndexFileBitSet indexFileBitSet = new IndexFileBitSet(numBits, id, segmentName, directory);
assertFalse(indexFileBitSet.exists());
indexFileBitSet.create(fixedBitSet.iterator());
indexFileBitSet.load();
checkEquals(fixedBitSet.iterator(), indexFileBitSet.iterator(), numBits);
indexFileBitSet.close();
String[] listAll = directory.listAll();
for (String s : listAll) {
System.out.println(s + " " + directory.fileLength(s));
}
}
private void populate(Random random, int numBits, FixedBitSet fixedBitSet) {
int population = random.nextInt(numBits);
for (int i = 0; i < population; i++) {
fixedBitSet.set(random.nextInt(numBits));
}
}
private void checkEquals(DocIdSetIterator expected, DocIdSetIterator actual, int numBits) throws IOException {
int expectedNextDoc;
while ((expectedNextDoc = expected.nextDoc()) < numBits) {
int actualNextDoc = actual.nextDoc();
assertEquals(expectedNextDoc, actualNextDoc);
}
}
}