From d8dba61b0a989bfd8584dab5c49d0a67aa3440ee Mon Sep 17 00:00:00 2001
From: Thomas Chandelle <thomas.chandelle@1spatial.com>
Date: Thu, 8 Jun 2017 12:06:40 +0200
Subject: [PATCH] Rounds if decimals options = 0

---
 src/ol/format/feature.js            |  2 +-
 test/spec/ol/format/geojson.test.js | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/ol/format/feature.js b/src/ol/format/feature.js
index 0a5e53b751..5887dcc106 100644
--- a/src/ol/format/feature.js
+++ b/src/ol/format/feature.js
@@ -190,7 +190,7 @@ ol.format.Feature.transformWithOptions = function(
   } else {
     transformed = geometry;
   }
-  if (write && opt_options && opt_options.decimals) {
+  if (write && opt_options && opt_options.decimals !== undefined) {
     var power = Math.pow(10, opt_options.decimals);
     // if decimals option on write, round each coordinate appropriately
     /**
diff --git a/test/spec/ol/format/geojson.test.js b/test/spec/ol/format/geojson.test.js
index 95b4271b92..a6b20bc652 100644
--- a/test/spec/ol/format/geojson.test.js
+++ b/test/spec/ol/format/geojson.test.js
@@ -829,6 +829,18 @@ describe('ol.format.GeoJSON', function() {
       expect(linestring.getCoordinates()).to.eql(
           [[42.123456789, 38.987654321], [43, 39]]);
     });
+
+    it('rounds a linestring with decimals option = 0', function() {
+      var linestring = new ol.geom.LineString([[42.123456789, 38.987654321],
+          [43, 39]]);
+      var geojson = format.writeGeometry(linestring, {
+        decimals: 0
+      });
+      expect(format.readGeometry(geojson).getCoordinates()).to.eql(
+          [[42, 39], [43, 39]]);
+      expect(linestring.getCoordinates()).to.eql(
+          [[42.123456789, 38.987654321], [43, 39]]);
+    });
   });
 
 });