From 6692ac3b750efda055dfc44395748aa5136c4198 Mon Sep 17 00:00:00 2001
From: Nicholas Knize <nknize@gmail.com>
Date: Mon, 24 Nov 2014 13:52:06 -0600
Subject: [PATCH] Adding unit test for even / odd boundary condition

---
 .../index/search/geo/GeoHashUtilsTests.java       | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/test/java/org/elasticsearch/index/search/geo/GeoHashUtilsTests.java b/src/test/java/org/elasticsearch/index/search/geo/GeoHashUtilsTests.java
index 72b86a269cf..49e1b4d0dc6 100644
--- a/src/test/java/org/elasticsearch/index/search/geo/GeoHashUtilsTests.java
+++ b/src/test/java/org/elasticsearch/index/search/geo/GeoHashUtilsTests.java
@@ -134,5 +134,20 @@ public class GeoHashUtilsTests extends ElasticsearchTestCase {
         neighbors = new ArrayList<>();
         GeoHashUtils.addNeighbors(geohash, neighbors );
         assertEquals(expectedNeighbors, neighbors);
+
+        // Border even and odd geohash
+        geohash = "ezzzz";
+        expectedNeighbors = new ArrayList<>();
+        expectedNeighbors.add("gbpbn");
+        expectedNeighbors.add("gbpbp");
+        expectedNeighbors.add("u0000");
+        expectedNeighbors.add("ezzzy");
+        expectedNeighbors.add("spbpb");
+        expectedNeighbors.add("ezzzw");
+        expectedNeighbors.add("ezzzx");
+        expectedNeighbors.add("spbp8");
+        neighbors = new ArrayList<>();
+        GeoHashUtils.addNeighbors(geohash, neighbors );
+        assertEquals(expectedNeighbors, neighbors);
     }
 }