我是angularjs及其mocking library的新手。我尝试测试一个特定的GET请求是否被执行，但我总是在第二个断言中得到以下错误，而且无法弄清楚原因：

错误：未满足的请求：GET /1.json

我在下面的代码中弄错了什么吗？

App.js

var App = angular.module('App', []).config(['$routeProvider', function($routeProvider) {
  $routeProvider.when('/', {
    templateUrl: 'views/main.html',
    controller: 'MainCtrl'
  }).when('/Items', {
    templateUrl: 'views/items.html',
    controller: 'Ctrl'
  }).otherwise({
    redirectTo: '/'
  });
}]);

Ctrl.js

function Ctrl($scope, $http, $filter) {
  $scope.items = [];

  $http.get('/1.json').success(function(data) {$scope.items = data.items;});
}

Ctrl.$inject = ["$scope","$http", "$filter"];

Spec/Ctrl.js

describe('Controller: Ctrl', function() {
  var $httpBackend;
  // load the controller's module
  beforeEach(module('App'));
  beforeEach(inject(function($injector) {
    $httpBackend = $injector.get('$httpBackend');

    // backend definition common for all tests
    $httpBackend.whenGET('/1.json').respond('Response!');
  }));

  afterEach(function() {
    $httpBackend.verifyNoOutstandingExpectation();
    $httpBackend.verifyNoOutstandingRequest();
  });

  var Ctrl, scope;

  // Initialize the controller and a mock scope
  beforeEach(inject(function($rootScope, $controller) {

    scope = $rootScope.$new();
    Ctrl = $controller('Ctrl', {
      $scope: scope
    });
  }));

  it('应初始化为0个items', function() {
    expect(scope.items.length).toBe(0);
    $httpBackend.flush();
  });

  it('应发出store请求', function(){
    var controller = scope.$new(Ctrl);
    $httpBackend.expectGET('/1.json');
    $httpBackend.flush();
  });
});

编辑：添加了app和controller代码。