Angular Test a controller that use RouteParams - angularjs

Question

I need to test a Controller that use $routeParams to define it action. Maybe it is a test problem, or is wrong the way I wrote the controller, so now I can't write a test.
Here is my controller
angular.module('cmmApp')
.controller('UserCtrl', function ($scope, $location, $routeParams, $ionicLoading, $ionicPopup, Userservice) {
//if a user id is set retrieve user information
if(typeof $routeParams.id !== 'undefined'){
var loader = $ionicLoading.show({content: "Retrieving user data"});
var user = Userservice.get({id: $routeParams.id}).$promise;
user.then(function(res){
console.log(res);
$scope.user = res.user;
loader.hide();
});
}
//else create an empty resource
else {
$scope.user = new Userservice;
}
});
Basically I only want to load a resource if an id is provided is $routeParams, else create an empty resource.
And here is the test:
'use strict';
describe('Controller: UserCtrl', function () {
// load the controller's module
beforeEach(module('cmmApp'));
var UserCtrl,
scope,
routeParams;
// Initialize the controller and a mock scope
beforeEach(inject(function ($controller, $rootScope, $routeParams, Userservice) {
scope = $rootScope.$new();
routeParams = $routeParams;
UserCtrl = $controller('UserCtrl', {
$scope: scope
});
console.log("routeParams");
routeParams = {id: 8490394};
console.warn(routeParams);
}));
it('should create an epmty user', function () {
console.log(scope.user);
expect(scope.user).toEqual({});
});
});
When I run grunt test karma reply:
Controller: UserCtrl should create an epmty user FAILED
Expected { } to equal { }.
Error: Expected { } to equal { }.
at null.<anonymous> (/Users/carlopasqualicchio/Sites/CMM_Ionic/test/spec/controllers/user.js:28:24)
I'm wonering how to tell karma to change $routeParams.idbefore a test to run, and assign a different value in two different test (I need to set it to null in the first, and to a value to the other).
Any help is appreciated.
Thanks, Matt.

Answer 1

You can pass a custom $routeParams object using the second argument of $controller (locals object), i.e. the same way you pass the $scope:
UserCtrl = $controller('UserCtrl', {
$scope: scope,
$routeParams: {id: '...'}
});