Angular JS Typescript Unit Testing Karma

Im currently involved in a project that has used typescript to build its single page anuglar app. Unfortunately they have done no unit testing. Being new to using typescript i am having problems getting any testing going. An example test is below. followed by the typescript file

When i run the test it fails to find the controller !

(function() {
'use strict';

    describe('CarController', function() {

        // Load the controllers module
        beforeEach(module('CarDealerApp'));

        var scope,
            CarController ;

        beforeEach(inject(function($controller) {
            scope = {};

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

        it('should set the car name', function() {

            expect(scope.carMake).toEqual('Ford');

        });

    });

})();


module CarDealerApp.Cars.Controllers {
"use strict";

export interface ICarScope extends angular.Scope {
    carName : string;
}

export class CarController {

    carName:string = "Ford";

    // $inject annotation
    public static $inject = [
        '$scope'
    ]

    constructor(private $scope: ICarScope){

        $scope.vm = this;
    }

}

}