HOWTO test controller

# test index
describe('MultiRecipeLoader', function() {
    var mockBackend, recipe, loader;

    // _$httpBackend_ is the same as $httpBackend. Only written this way to // differentiate between injected variables and local variables.
    beforeEach(inject(function(_$httpBackend_, Recipe, MultiRecipeLoader) {
    recipe = Recipe;
    mockBackend = _$httpBackend_;
    loader = MultiRecipeLoader;
}));
it('should load list of recipes', function() {

    mockBackend.expectGET('/recipes').respond([{
        id: 1
    }, {
        id: 2
    }]);

    var recipes;
    var promise = loader();
    promise.then(function(rec) {
        recipes = rec;
    });

    expect(recipes).toBeUndefined();

    mockBackend.flush();

    expect(recipes).toEqualData([{
        id: 1
    }, {
        id: 2
    }]);
});
});

describe('EditController', function() {
    var mockBackend, location;
    beforeEach(inject(function($rootScope, $controller, _$httpBackend_, $location, Recipe) {
        mockBackend = _$httpBackend_;
        location = $location;
        $scope = $rootScope.$new();
        ctrl = $controller('EditCtrl', {
            $scope: $scope,
            $location: $location,
            recipe: new Recipe({
                id: 1,
                title: 'Recipe'
            })
        });
        }));
        it('should save the recipe', function() {
            mockBackend.expectPOST('/recipes/1', {
                id: 1,
                title: 'Recipe'
            }).respond({
                id: 2
                }); // Set it to something else to ensure it is changed during the test
                location.path('test');
                $scope.save();
                expect(location.path()).toEqual('/test');
                mockBackend.flush();
                expect(location.path()).toEqual('/view/2');
            });
            it('should remove the recipe', function() { expect($scope.recipe).toBeTruthy(); location.path('test');
            $scope.remove();
            expect($scope.recipe).toBeUndefined();
            expect(location.path()).toEqual('/');
        });
    });

Scenario Tests

describe('GutHub App', function() {
    it('should show a list of recipes', function() {
        browser().navigateTo('/index.html');
        // Our Default GutHub recipes list has two recipes
        expect(repeater('.recipes li').count()).toEqual(2);
    });
});