[opensearch-project#7101] Fixing the GeoTileIT#testMultivaluedGeoPoin…

…tsAggregation test case. (opensearch-project#7166)

The issue was happening because we encode the GeoPoint as long and error comes in the precision due to that encoding. The error was not taken care while generating the exepected tiles count for execpected output.

Signed-off-by: Navneet Verma <navneev@amazon.com>

modules/geo/src/internalClusterTest/java/org/opensearch/geo/search/aggregations/bucket/AbstractGeoBucketAggregationIntegTest.java

@@ -10,6 +10,7 @@
 
 import com.carrotsearch.hppc.ObjectIntHashMap;
 import com.carrotsearch.hppc.ObjectIntMap;
+import org.apache.lucene.geo.GeoEncodingUtils;
 import org.opensearch.Version;
 import org.opensearch.action.index.IndexRequestBuilder;
 import org.opensearch.cluster.metadata.IndexMetadata;
@@ -254,4 +255,17 @@ protected double getRadiusOfBoundingBox() {
         return 5.0;
     }
 
+    /**
+     * Encode and Decode the {@link GeoPoint} to get a {@link GeoPoint} which has the exact precision which is being
+     * stored.
+     * @param geoPoint {@link GeoPoint}
+     * @return {@link GeoPoint}
+     */
+    protected GeoPoint toStoragePrecision(final GeoPoint geoPoint) {
+        return new GeoPoint(
+            GeoEncodingUtils.decodeLatitude(GeoEncodingUtils.encodeLatitude(geoPoint.getLat())),
+            GeoEncodingUtils.decodeLongitude(GeoEncodingUtils.encodeLongitude(geoPoint.getLon()))
+        );
+    }
+
 }

modules/geo/src/internalClusterTest/java/org/opensearch/geo/search/aggregations/bucket/GeoTileGridIT.java

@@ -160,7 +160,8 @@ protected Set<String> generateBucketsForGeometry(final Geometry geometry, final
     protected Set<String> generateBucketsForGeoPoint(final GeoPoint geoPoint) {
         Set<String> buckets = new HashSet<>();
         for (int precision = GEOPOINT_MAX_PRECISION; precision > 0; precision--) {
-            final String tile = GeoTileUtils.stringEncode(geoPoint.getLon(), geoPoint.getLat(), precision);
+            final GeoPoint precisedGeoPoint = this.toStoragePrecision(geoPoint);
+            final String tile = GeoTileUtils.stringEncode(precisedGeoPoint.getLon(), precisedGeoPoint.getLat(), precision);
             buckets.add(tile);
         }
         return buckets;