如何在AngularJS中测试具有resolve属性的控制器？

Question

如何测试具有解析属性的控制器？它抛出一个错误:未知提供者:InitProvider,在测试期间,可以理解.我该怎么测试呢？

我在路由配置中使用init属性来加载数据并在控制器实例化时将其传递给控制器​​,这样在加载数据之前路由不会改变.

  $routeProvider
    .when('/topic/:topic_id/content/:content_id', {
      templateUrl: 'views/content.html',
      controller: 'ContentCtrl',
    resolve: {
      init: ContentCtrl.init
    }
    });

这种模式首先是完全错误的吗？

'use strict';

var ContentCtrl = ['$scope', '$location', '$routeParams', 'init', function ($scope, $location, $routeParams, init) {

    $scope.contents = init.contents;

  }];

ContentCtrl.init = ['$q', 'app_config', '$log', '$timeout', function ($q, app_config, $log, $timeout) {

    var defer = $q.defer();

    $log.log("ContentCtrl loading..");

    $timeout(function() {
        defer.resolve({contents: [
                                    {message: 'Hello!'}
                                  ]});

        $log.log("ContentCtrl loaded.");

    }, 2000);

    return defer.promise;
}];

angular.module('studentportalenApp').controller('ContentCtrl', ContentCtrl);

我想将整个控制器封装在内部.controler('ContentCtrl', function() { ... }),但尚未弄清楚如何正确完成这一操作以使init在路由配置中可用.

Answer 1

在这里遇到同样的事情.我使用这里的方法解决了它:https://groups.google.com/forum/？fromgroups =#!topic/angular/LzXm-9nwkjY.

基本上,我模拟了通常使用简单变量发送的数据,并将其添加到测试中的控制器中.在你的情况下,我认为它看起来像:

var initData = {
      contents: [{message: 'Hello!'}]
};
$controller("ContentCtrl", { $scope: ..., init: initData });

Answer 2

最终通过将所有内容转换为服务来解决,正如charlietfl所建议的那样.

例:

路线配置:

//This helper injects a function with the service 
//defined in the initMethod string and returns services.prepare()
var interceptWith = function(initMethod) {
        return [initMethod, function(m) {
                    return m.prepare();
                }];
}

$routeProvider        
    .when('/foobar/', {
        templateUrl: 'foobar.html',
        controller: 'FoobarCtrl',
        resolve: {
            init: interceptWith('FoobarCtrlInit')
        }
    });

foob​​ar控制器定义:

angular.module('fooApp').controller('FoobarCtrl', ['$scope', 'init', function ($scope, init) {              
            $scope.data = init.data;    
  }])
.service('FoobarCtrlInit', ['$q', '$timeout', function ($q, $timeout) {

        var _prepare = function() {

            var deferred = $q.defer();

            //Fake async loading of data
            $timeout(function() {
                 deferred.resolve({data: ['A','B','C']});
            }, 1000);




            return deferred.promise; 
        }

        return {
            prepare: _prepare
        }
}]);

要测试这个,可以这样做:

'use strict';

describe('Controller: FoobarCtrl', function() {

  // load the controller's module
  beforeEach(module('fooApp'));

  var FoobarCtrl,
    scope;

  // Initialize the controller and a mock scope
  beforeEach(inject(function($controller) {
    scope = {};
    CourseCtrl = $controller('FoobarCtrl', {
      $scope: scope,
      init: {data: ['Testdata A', 'B', 'C']}
    });
  }));

  it('should attach a list of data to the scope', function() {
    expect(scope.data.length).toBe(3);
  });
});