How do I get a reference to the angularjs controller defined with the 'controller' function? The test fails saying 'TestCtrl' is not a function. I have tried both with and without the quotes. $controller doc says it takes a constructor function or a string as an argument. Can anyone help?

controller.specs.js

describe('controller tests', function () {

    var m, c;
    beforeEach(function () {
        m = angular.module('foo', []);
        c = m.controller('TestCtrl', ['$scope', function ($scope) {
            $scope.data = { foo: 'bar' };
            $scope.changeFoo = function () {
                $scope.data.foo = 'baz';
            };
        }]);
    });
    
    afterEach(function () {

    });
    
    describe('HomeCtrl controller ', function () {
        var scope, ctrl;

        beforeEach(inject(function ($rootScope, $controller) {
          scope = $rootScope.$new();
          ctrl = $controller('TestCtrl', { $scope: scope });
        }));
        
        it('scope.data should be defined', function () {
            expect(scope.data).toBeDefined();
            expect(scope.data.foo).toBe('bar');
            expect(scope.changeFoo).toBeDefined();
            scope.changeFoo();
            expect(scope.data.foo).toBe('baz');
        });
    });
    
});

http://www.itaware.eu/2012/10/19/angularjs-unit-tests-and-end-to-end-tests/ use the module function in angular mocks