Angular Testing: Spy a function that was executed on the initialize of a controller

Question

I\'ve been trying to spy a function that was executed on the initialize of a controller, but the test always failed. I\'ve been trying execute $scope.$digest() and

Answer 1

Your test is failing because spy gets overridden by real function when controller initializes. One way to avoid this is monkey-patching $scope object with custom setter for requestAuthorization property, that could create spy when controller is trying to assign value to this property:

    beforeEach(inject(function($controller, _$rootScope_, _$injector_, _$stateParams_) {
        $rootScope = _$rootScope_;
        $scope = $rootScope.$new();
        var reqAuthSpy;
        Object.defineProperty($scope, 'requestAuthorization', {
            get: function() {return reqAuthSpy;},
            set: function(fn) {
             reqAuthSpy = jasmine.createSpy('reqAuthSpy');
            }
        });
        $stateParams = _$stateParams_;
        $stateParams.requestAuthorization = true;


        AppCtrl = $controller('AppCtrl',{
            $scope: $scope,
            $stateParams : $stateParams
        });

    }));