/*
 * 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.document;

import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.Sort;
import org.apache.lucene.search.SortField;
import org.apache.lucene.store.ByteBuffersDirectory;
import org.apache.lucene.store.Directory;
import org.apache.lucene.tests.util.LuceneTestCase;

public class TestLatLonDistanceSortSecondaryKey extends LuceneTestCase {

  private static void add(IndexWriter w, int cat, double lat) throws Exception {
    Document doc = new Document();
    doc.add(new NumericDocValuesField("cat", cat));
    doc.add(new LatLonDocValuesField("loc", lat, 0));
    w.addDocument(doc);
  }

  public void testCloserTiedDocIsNotDropped() throws Exception {
    try (Directory dir = new ByteBuffersDirectory()) {
      try (IndexWriter w = new IndexWriter(dir, new IndexWriterConfig())) {
        for (int i = 0; i < 1024; i++) {
          add(w, 5000 - i, 0.01);
        }
        add(w, 1000, 18);
        add(w, 1000, 13.5);
      }
      try (DirectoryReader reader = DirectoryReader.open(dir)) {
        Sort sort =
            new Sort(
                new SortField("cat", SortField.Type.INT),
                LatLonDocValuesField.newDistanceSort("loc", 0, 0));
        IndexSearcher searcher = new IndexSearcher(reader);
        // expected: doc 1025 (same cat as doc 1024 but closer); actual: doc 1024
        assertEquals(1025, searcher.search(MatchAllDocsQuery.INSTANCE, 1, sort).scoreDocs[0].doc);
      }
    }
  }
}