How to write testable controllers with private methods in AngularJs?

Question

Alright, so I have been stumbling upon some issue for a long time and I would like to hear an opinion from the rest of community.

First, let\'s look at some abstract

Answer 1

Namespacing it on the scope is pollution. What you want to do is extract that logic into a separate function which is then injected into your Controller. i.e.

function Ctrl($scope, util) {

   $scope.field = "field";
   $scope.whenClicked = function() {
      util();
   };
}

angular.module("foo", [])
       .service("anyService", function(...){...})
       .factory("util", function(anyService) {
              return function() {
                     anyService.doSmth();
              };
       });

Now you can unit test with mocks your Ctrl as well as "util".