javascript - Karma/Jasmine testing custom directive controller -

i'm trying test angularjs custom directive karma + jasmine. found way checking many references around web. solution doesn't appear correct way. let's first check example, test.js:

angular.module("app", [])   .directive("test", function() {     return {       restrict: 'e',       scope: {         defined: '='       },       templatefile: "test.html",       controller: function($scope) {         $scope.isdefined = function() {           return $scope.defined;         };       }     };   });  describe("test directive", function() {   var elm, scope;    beforeeach(module("app"));   beforeeach(module("test.html"));    beforeeach(inject(function($rootscope, $compile, $injector) {     elm = angular.element("<test defined='defined'></test>");      scope = $rootscope;     scope.defined = false;      $compile(elm)(scope);     scope.$digest();   }));    it("should not defined", function() {     expect(elm.scope().$$childtail.isdefined()).tobe(false);   }); }); 

now directive template file test.html:

<button data-ng-click='defined = true'></button> 

and karma.conf.js:

module.exports = function(config) {   config.set({     basepath: '',     frameworks: ['jasmine'],      files: [       'angular.min.js',       'angular-mocks.js',       'test.js',       'test.html'     ],      exclude: [],      preprocessors: {       "test.html": ['ng-html2js']     },      reporters: ['progress'],     port: 9876,     colors: true,     loglevel: config.log_info,     autowatch: true,     browsers: ['firefox'],     singlerun: true   }); }; 

i running tests following command line:

karma start karma.conf.js 

what appears strange me scope function defined in controller can accessed $$childtail attribute. if try call directly element's scope got undefined value elm.scope().isdefined(). has better solution this?

thanks!

because directive uses isolated scope, instead of

elm.scope() 

you should able use

elm.isolatescope() 

the function isolatescope explained (briefly) @ http://docs.angularjs.org/api/ng/function/angular.element