package org.apache.lucene.index;
/**
* 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.
*/
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.apache.lucene.util.*;
import org.apache.lucene.store.*;
import org.apache.lucene.document.*;
public class TestStressAdvance extends LuceneTestCase {
public void testStressAdvance() throws Exception {
for(int iter=0;iter<3;iter++) {
if (VERBOSE) {
System.out.println("\nTEST: iter=" + iter);
}
Directory dir = newDirectory();
RandomIndexWriter w = new RandomIndexWriter(random, dir);
final Set<Integer> aDocs = new HashSet<Integer>();
final Document doc = new Document();
final Field f = newField("field", "", Field.Index.NOT_ANALYZED_NO_NORMS);
doc.add(f);
final Field idField = newField("id", "", Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS);
doc.add(idField);
int num = atLeast(4097);
for(int id=0;id<num;id++) {
if (random.nextInt(4) == 3) {
f.setValue("a");
aDocs.add(id);
} else {
f.setValue("b");
}
idField.setValue(""+id);
w.addDocument(doc);
}
w.forceMerge(1);
final List<Integer> aDocIDs = new ArrayList<Integer>();
final List<Integer> bDocIDs = new ArrayList<Integer>();
final IndexReader r = w.getReader();
final int[] idToDocID = new int[r.maxDoc()];
for(int docID=0;docID<idToDocID.length;docID++) {
int id = Integer.parseInt(r.document(docID).get("id"));
if (aDocs.contains(id)) {
aDocIDs.add(docID);
} else {
bDocIDs.add(docID);
}
}
final TermDocs de = r.termDocs();
for(int iter2=0;iter2<10;iter2++) {
if (VERBOSE) {
System.out.println("\nTEST: iter=" + iter + " iter2=" + iter2);
}
de.seek(new Term("field", "a"));
testOne(de, aDocIDs);
de.seek(new Term("field", "b"));
testOne(de, bDocIDs);
}
w.close();
r.close();
dir.close();
}
}
private void testOne(TermDocs docs, List<Integer> expected) throws Exception {
if (VERBOSE) {
System.out.println("test");
}
int upto = -1;
while(upto < expected.size()) {
if (VERBOSE) {
System.out.println(" cycle upto=" + upto + " of " + expected.size());
}
final int docID;
if (random.nextInt(4) == 1 || upto == expected.size()-1) {
// test nextDoc()
if (VERBOSE) {
System.out.println(" do nextDoc");
}
upto++;
if (docs.next()) {
docID = docs.doc();
} else {
docID = -1;
}
} else {
// test advance()
final int inc = _TestUtil.nextInt(random, 1, expected.size()-1-upto);
if (VERBOSE) {
System.out.println(" do advance inc=" + inc);
}
upto += inc;
if (docs.skipTo(expected.get(upto))) {
docID = docs.doc();
} else {
docID = -1;
}
}
if (upto == expected.size()) {
if (VERBOSE) {
System.out.println(" expect docID=" + -1 + " actual=" + docID);
}
assertEquals(-1, docID);
} else {
if (VERBOSE) {
System.out.println(" expect docID=" + expected.get(upto) + " actual=" + docID);
}
assertTrue(docID != -1);
assertEquals(expected.get(upto).intValue(), docID);
}
}
}
}