在单元测试中获取控制器的编译模板

Question

我有以下控制器：

angular.module('app').controller('userList'
 , ['$scope','appRules',function ($scope,appRules) {
  $scope.isUserInRole=function(user,role){
    console.log("exucuting userIsInRole:",user,role);//never happens
    return  appRules.userIsInRole(user,role);
  }
  window.sscope=$scope;
  console.log($scope.menu);
}]); 

这用于以下路线：

angular.module('app', [,'ui.bootstrap','ngRoute'])
.config(['$routeProvider','$locationProvider'
,function($routeProvider,$locationProvider){
  $locationProvider.html5Mode(true);
  $locationProvider.hashPrefix('!');
  $routeProvider
          .when('/admin/users',{
            templateUrl:'app/js/partials/admin/users/list.html',
            controller:'userList'
          });
}]);

模板会有一些东西来检查用户是否可以看到这个页面（即使有人破解了javascript也没关系，因为当数据被获取或提交时，服务器也会检查）。

<div data-ng-if="!isUserInRole(login.user,'Administrator')" class="red">
  Please log in or log in as another user.
</div>
<div data-ng-if="isUserInRole(login.user,'Administrator')" class="green">
  Page to edit users.
</div>

现在我想在我的测试中创建一个控制器，看看它何时渲染是否正确：

  var controller,scope,element;

  beforeEach(inject(function($controller
   ,$rootScope,$compile,appRules) {
    scope=$rootScope;
    scope.login={};
    scope.isUserInRole=appRules.userIsInRole;
    controller = $controller('userList',{
      $scope:scope
    });
    //here I have the controller but how to get the html it generates
    //  when rendering the template?
    element = $compile("<div ng-controller='userList'>"
      +"<div data-ng-view=''></div></div>")(scope);
    //here element isn't rendered at all, works on directives but how
    //  to do this with controllers?
    console.log("element is:",element);
  }));

我想写一个类似的测试

  it('Check page won\'t show if user is not set or is not Administrator.'
  , function() {
    expect($(element).text().trim()
      .indexOf("Please log in or log in as another user."))
      .toBe(0,'Show login message when login.user is not set.');
  });

不知道如何获取元素。

[更新]

我实际上是在尝试测试一个模板，因为这是由一个控制器使用的，我想用一个控制器来测试它，但正如 Jon 建议的那样，它可以作为模板加载。

我不知道如何使它编译和操作范围并再次编译。以下：

var el = angular.element(
  $templateCache
  .get('app/js/partials/admin/users/list.html'));
$rootScope = _$rootScope_;
$rootScope.menu={login:{}};
el.scope($rootScope);
$rootScope.$apply();
console.log(el.text());

这给了我Please log in or log in as another user. 和Page to edit users. 的输出看起来元素只是未编译的原始元素。

尝试这样的事情也无济于事：

  beforeEach(inject(function(_$compile_
   , _$rootScope_,appSettings,$templateCache){
    console.log("before each");
    var el = angular.element($templateCache
      .get('app/js/partials/admin/users/list.html'));
    var compile=_$compile_;
    var $rootScope=_$rootScope_;
    $rootScope.login:{};
    $rootScope.isUserInRole=appSettings.userIsInRole;
    //I would think that compile would invoke the ng-if and appSettings.userIsInRole
    //  but no console log in that function is shown.
    var element = compile($templateCache
      .get('app/js/partials/admin/users/list.html'))($rootScope);
    console.log("element is:",element.html());//=undefined    
  }));

Answer 1

使用 ng-templates 或 ng-html2js 将模板添加到缓存中，以便在 Karma 运行时可用。然后这样做：

var 范围 = null;

beforeEach(inject(function($templateCache,_$compile_,_$rootScope_, _$controller_) {

    //get the template from the cache
    template = $templateCache.get('src/main/app/components/someController/widget-search.tpl.html');

    $compile = _$compile_;
    $rootScope = _$rootScope_;
    $controller = _$controller_;

    scope = $rootScope.new();
    //compile it
    element = $compile(template)(scope);
}));

 //then shove your compiled element into your controller instance



it( 'should be instantiated since it does not do much yet', function(){

            ctrl = $controller('SomeController',
                {
                    $scope: scope,
                    $element: element
                });

             scope.$digest();

            // my controller should set a variable called hasInstance to true when it initializes. Here i'm testing that it does.
            expect( ctrl.hasInstance).toBeTruthy();

        });

欲了解更多信息，请参阅http://angular-tips.com/blog/2014/06/introduction-to-unit-test-directives/

Answer 2

如果您使用 Karma，您可以使用 ng-html2js karma 预处理器，它基本上会运行您的模板并将它们转换为您可以包含在测试中的模块，该模块会填充 $templateCache 以便您的模板可用。