getEventHandlers should convert camelcase to underscored event names

Author: hxu

src/services/angulargmUtils.js

@@ -133,7 +133,10 @@
       // retrieve gm-on-___ handlers
       angular.forEach(attrs, function(value, key) {
         if (key.lastIndexOf('gmOn', 0) === 0) {
-          var event = angular.lowercase(key.substring(4));
+          var event = angular.lowercase(
+            key.substring(4)
+              .replace(/(?!^)([A-Z])/g, '_$&')
+          );
           var fn = $parse(value);
           handlers[event] = fn;
         }

test/unit/services/angulargmUtilsSpec.js

@@ -3,7 +3,8 @@ describe('angulargmUtils', function() {
       boundsEqual,
       latLngToObj,
       objToLatLng,
-      hasNaN;
+      hasNaN,
+      getEventHandlers;
 
   var latLngG,
       latLngObj;
@@ -18,6 +19,7 @@ describe('angulargmUtils', function() {
     latLngToObj = angulargmUtils.latLngToObj;
     objToLatLng = angulargmUtils.objToLatLng;
     hasNaN = angulargmUtils.hasNaN;
+    getEventHandlers = angulargmUtils.getEventHandlers;
 
     latLngG = new google.maps.LatLng(1, 2);
     latLngObj = {lat: 1, lng: 2};
@@ -122,4 +124,21 @@ describe('angulargmUtils', function() {
 
   });
 
+  describe('getEventHandlers', function() {
+    it('converts attributes that begin with gmOn', function() {
+      var attrs = {
+        'gmOnClick': function() {},
+        'gmMapId': '',
+        'gmOnZoomChanged': function() {}
+      }; // represents an Attribute object in the link function
+
+      var handlers = getEventHandlers(attrs);
+      expect(handlers).toEqual({
+        'click': jasmine.any(Function),
+        // Converts camelcased names to underscore spearated
+        'zoom_changed': jasmine.any(Function)
+      });
+    });
+  });
+
 });