Error encountered in AngularJS Karma testing: Typeerror related to $route

Currently, I'm testing an AngularJS controller using Karma. The controller is supposed to inject a $route in order to access the current path. However, when running the karma test, I encounter the following error:

TypeError: 'undefined' is not an object( evaluating '$route.current')

Here is the code for my controller:

angular.module('myApp').controller('EditController',['$scope', '$http', '$route', function($scope,
$http,$route){

    var myId = $route.current.params.myId;  
    $scope.var1 = 'var1';  
    console.log(myId);
}]);

This is how my Karma file looks like:

'use strict';
describe('Controller: EditController', function(){
    beforeEach(module('myApp'));
    var EditCtrl, scope, route;

    beforeEach(inject(function($controller, $rootScope, $route, $http){
     scope = $rootScope.$new();
     EditCtrl = $controller('EditCtrl',{
        $scope: scope,
        $route: route
     });
    }));

    it('should have var1 equal to "var1"',function(){
        expect(scope.var1).toEqual('var1');
    }); 
});

Answer №1

Make sure to update your beforeEach hook to include the $route service injection.

beforeEach(inject(function($controller,$rootScope,$route,$http){
 scope=$rootScope.$new();
 route = $route;
 EditCtrl = $controller('EditCtrl',{
    $scope:scope,
    $route:route
 });
}));

If needed, consider mocking the $route.current object within the hook to ensure proper instantiation:

$route.current = { params: { myId: 'test' } };

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