/*
 * 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.lucene.search;

import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.StringField;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.Term;
import org.apache.lucene.store.Directory;
import org.apache.lucene.tests.util.LuceneTestCase;

/**
 * FuzzyTermsEnum gives "a" the boost 1 - 2 / min(1, 3) = -1 for the query "cat" with 2 edits.
 * TopTermsRewrite truncates negative boosts to 0, but ScoringRewrite (SCORING_BOOLEAN_REWRITE)
 * passes the raw value to BoostQuery, which rejects it.
 */
public class TestScoringRewriteNegativeFuzzyBoost extends LuceneTestCase {

  public void testScoringBooleanRewriteWithShortMatchingTerm() throws Exception {
    try (Directory dir = newDirectory()) {
      try (IndexWriter w = new IndexWriter(dir, newIndexWriterConfig())) {
        for (String value : new String[] {"cat", "a"}) {
          Document doc = new Document();
          doc.add(new StringField("f", value, Field.Store.NO));
          w.addDocument(doc);
        }
      }
      try (IndexReader reader = DirectoryReader.open(dir)) {
        Query query =
            new FuzzyQuery(
                new Term("f", "cat"), 2, 0, 50, true, MultiTermQuery.SCORING_BOOLEAN_REWRITE);
        // "a" is 2 edits from "cat", so both documents match
        assertEquals(2, new IndexSearcher(reader).count(query));
      }
    }
  }
}