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* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.common.geo;
import org.apache.lucene.spatial.util.GeoHashUtils;
import org.elasticsearch.test.ESTestCase;
import org.junit.Test;
/**
* Tests for {@link org.apache.lucene.spatial.util.GeoHashUtils}
*/
public class GeoHashTests extends ESTestCase {
@Test
public void testGeohashAsLongRoutines() {
final GeoPoint expected = new GeoPoint();
final GeoPoint actual = new GeoPoint();
//Ensure that for all points at all supported levels of precision
// that the long encoding of a geohash is compatible with its
// String based counterpart
for (double lat=-90;lat<90;lat++)
{
for (double lng=-180;lng<180;lng++)
{
for(int p=1;p<=12;p++)
{
long geoAsLong = GeoHashUtils.longEncode(lng, lat, p);
// string encode from geohashlong encoded location
String geohashFromLong = GeoHashUtils.stringEncode(geoAsLong);
// string encode from full res lat lon
String geohash = GeoHashUtils.stringEncode(lng, lat, p);
// ensure both strings are the same
assertEquals(geohash, geohashFromLong);
// decode from the full-res geohash string
expected.resetFromGeoHash(geohash);
// decode from the geohash encoded long
actual.resetFromGeoHash(geoAsLong);
assertEquals(expected, actual);
}
}
}
}
}