Merge pull request #4809 from fperucic/multpolygon-clone

Fix multipolygon clone.

src/ol/geom/multipolygon.js

@@ -122,7 +122,7 @@ ol.geom.MultiPolygon.prototype.clone = function() {
   var len = this.endss_.length;
   var newEndss = new Array(len);
   for (var i = 0; i < len; ++i) {
-    newEndss[i] = this.endss_.slice();
+    newEndss[i] = this.endss_[i].slice();
   }
 
   multiPolygon.setFlatCoordinates(

test/spec/ol/geom/multipolygon.test.js

@@ -88,6 +88,15 @@ describe('ol.geom.MultiPolygon', function() {
           [[[3, 0], [4, 1], [5, 2], [5, 0]]]);
     });
 
+    describe('#clone()', function() {
+
+      it('has the expected endss_', function() {
+        var clone = multiPolygon.clone();
+        expect(multiPolygon.endss_).to.eql(clone.endss_);
+      });
+
+    });
+
     describe('#getCoordinates()', function() {
 
       var cw = [[-180, -90], [-180, 90], [180, 90], [180, -90], [-180, -90]];