Defined service method is not called, instead real service's is called - angularjs

Question

I am following this video tutorial and its source is here.
I am trying to apply this test
Here is my test
describe("InStudentController", function () {
beforeEach(module("eucngts"));
var inStudentsController;
var MyInStudentsService;
var $scope;
var $q;
var deferred;
beforeEach(function () {
MyInStudentsService =
{
getInStudents: function () {
deferred = $q.defer();
return deferred.promise;
}
};
});
beforeEach(inject(function ($controller, $rootScope, _$q_) {
$q = _$q_;
$scope = $rootScope.$new();
inStudentsController = $controller('InStudentsController', {
service: MyInStudentsService
});
}));
it("should request list of inStudents", function () {
spyOn(MyInStudentsService, "getInStudents").and.callThrough();
inStudentsController.getPage(); // <-- HERE
//deferred.resolve();
$scope.$root.$digest();
expect(MyInStudentsService.getInStudents).toHaveBeenCalled();
});
});
Here is relevant controller code:
InStudentsController.prototype.getPage = function (criteria) {
var self = this;
self.showGrid = true;
self.service.getInStudents();
};
When I call getPage() on test it calls real service method instead of defined in test.
What am I doing wrong?
EDIT
I don't use scope in my controller here is generated code(I use typescript):
function InStudentsController (service) {
var self = this;
self.service = service;
}
InStudentsController.$inject = ['InStudentsService'];
angular.module("eucngts").controller("InStudentsController", InStudentsController);

Answer 1

According to your latest update it is clear that the name of dependency is used wrong in the test. It must be InStudentsService instead of service. When using $inject property of controller constructor only that name matters, not the formal parameter name in function. That makes minification possible
inStudentsController = $controller('InStudentsController', {
InStudentsService: MyInStudentsService
});

Answer 2

Right now you're not injecting a scope into the controller. I think this:
$scope = $rootScope.$new();
inStudentsController = $controller('InStudentsController', {
service: MyInStudentsService
});
Should be this:
$scope = $rootScope.$new();
$scope.service = MyInStudentsService
inStudentsController = $controller('InStudentsController', {
$scope: $scope
});
But it seems odd passing the service in on the scope. Instead, you should be declaring the controller something like this:
angular.module('myApp')
.controller('InStudentsController', function ($scope, InStudentsService) {
...
});
And then the service would be injected like so:
$scope = $rootScope.$new();
inStudentsController = $controller('InStudentsController', {
$scope: $scope,
InStudentsService: MyInStudentsService
});