Issue #3511 fixed

.travis.yml

@@ -9,3 +9,4 @@
   - npm install
 
  script: grunt
+

src/dropdown/dropdown.js

@@ -128,8 +128,11 @@ angular.module('ui.bootstrap.dropdown', ['ui.bootstrap.position'])
       });
     }
 
-    $animate[isOpen ? 'addClass' : 'removeClass'](self.$element, openClass);
-
+    $animate[isOpen ? 'addClass' : 'removeClass'](self.$element, openClass).then(function() {
+      if (angular.isDefined(isOpen) && isOpen !== wasOpen) {
+        toggleInvoker($scope, { open: !!isOpen });
+      }
+    });
     if ( isOpen ) {
       scope.focusToggleElement();
       dropdownService.open( scope );
@@ -138,9 +141,6 @@ angular.module('ui.bootstrap.dropdown', ['ui.bootstrap.position'])
     }
 
     setIsOpen($scope, isOpen);
-    if (angular.isDefined(isOpen) && isOpen !== wasOpen) {
-      toggleInvoker($scope, { open: !!isOpen });
-    }
   });
 
   $scope.$on('$locationChangeSuccess', function() {

src/dropdown/test/dropdown.spec.js

@@ -1,12 +1,13 @@
 describe('dropdownToggle', function() {
-  var $compile, $rootScope, $document, element;
+  var $compile, $rootScope, $document, element, $browser;
 
   beforeEach(module('ui.bootstrap.dropdown'));
 
-  beforeEach(inject(function(_$compile_, _$rootScope_, _$document_) {
+  beforeEach(inject(function(_$compile_, _$rootScope_, _$document_, $browser) {
     $compile = _$compile_;
     $rootScope = _$rootScope_;
     $document = _$document_;
+    $browser = $browser;
   }));
 
   afterEach(function() {
@@ -32,6 +33,8 @@ describe('dropdownToggle', function() {
     function dropdown() {
       return $compile('<li dropdown><a href dropdown-toggle></a><ul><li><a href>Hello</a></li></ul></li>')($rootScope);
     }
+
+    $browser.defer.flush();
 
     beforeEach(function() {
       element = dropdown();