fix mocked plotly_relayout event data on mapbox interactions

Author: etpinard

src/plots/mapbox/mapbox.js

@@ -152,9 +152,7 @@ proto.createMap = function(calcData, fullLayout, resolve, reject) {
         // duplicate 'plotly_relayout' events.
 
         if(eventData.originalEvent || wheeling) {
-            var update = {};
-            update[self.id] = Lib.extendFlat({}, view);
-            gd.emit('plotly_relayout', update);
+            emitRelayoutFromView(view);
         }
         wheeling = false;
     });
@@ -212,6 +210,15 @@ proto.createMap = function(calcData, fullLayout, resolve, reject) {
         gd.emit('plotly_doubleclick', null);
     });
 
+    function emitRelayoutFromView(view) {
+        var id = self.id;
+        var evtData = {};
+        for(var k in view) {
+            evtData[id + '.' + k] = view[k];
+        }
+        gd.emit('plotly_relayout', evtData);
+    }
+
     // define clear select on map creation, to keep one ref per map,
     // so that map.on / map.off in updateFx works as expected
     self.clearSelect = function() {

test/jasmine/tests/mapbox_test.js

@@ -896,10 +896,9 @@ describe('@noCI, mapbox plots', function() {
             expect(layout.zoom).toBeCloseTo(zoom);
 
             if(opts && opts.withUpdateData) {
-                var mapboxUpdate = updateData.mapbox;
 
-                expect([mapboxUpdate.center.lon, mapboxUpdate.center.lat]).toBeCloseToArray(center);
-                expect(mapboxUpdate.zoom).toBeCloseTo(zoom);
+            expect([evtData['mapbox.center'].lon, evtData['mapbox.center'].lat]).toBeCloseToArray(center);
+            expect(evtData['mapbox.zoom']).toBeCloseTo(zoom);
             }
         }