/*
 * 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.store.ByteBuffersDirectory;
import org.apache.lucene.store.Directory;
import org.apache.lucene.tests.util.LuceneTestCase;
import org.apache.lucene.util.SloppyMath;

public class TestDistanceQueryRadiusBoundary extends LuceneTestCase {

  public void testPointAtExactlyTheRadiusMatches() throws Exception {
    double centerLat = -23.073417018167675, centerLon = -155.66040300764143;
    double lat = 49.503454877994955, lon = -167.46806376613677;
    try (Directory dir = new ByteBuffersDirectory()) {
      try (IndexWriter w = new IndexWriter(dir, new IndexWriterConfig())) {
        Document doc = new Document();
        doc.add(new LatLonPoint("p", lat, lon));
        w.addDocument(doc);
      }
      try (DirectoryReader reader = DirectoryReader.open(dir)) {
        double radius = SloppyMath.haversinMeters(centerLat, centerLon, lat, lon);
        int count =
            new IndexSearcher(reader)
                .count(LatLonPoint.newDistanceQuery("p", centerLat, centerLon, radius));
        // lat/lon are exact encoded values; expected 1 hit at distance == radius, actual 0
        assertEquals("hits at radius " + radius + " m", 1, count);
      }
    }
  }
}