unit-testing - 在 angular js 中测试 Controller 时得到 Unknown provider

Question

我有以下 Controller :

angular.module('samples.controllers',[])
  .controller('MainCtrl', ['$scope', 'Samples', function($scope, Samples){
  //Controller code
}

哪个依赖于以下服务 :

angular.module('samples.services', []).
    factory('Samples', function($http){
    // Service code
}

尝试过 测试 Controller 使用以下代码:

describe('Main Controller', function() {
  var service, controller, $httpBackend;

  beforeEach(module('samples.controllers'));
  beforeEach(module('samples.services'));
  beforeEach(inject(function(MainCtrl, Samples, _$httpBackend_) {

  }));

    it('Should fight evil', function() {

    });
});

但得到以下错误:

Error: Unknown provider: MainCtrlProvider <- MainCtrl.

P.s 尝试了以下 post ，似乎没有帮助

Answer 1

测试 Controller 的正确方法是使用 $controller :

ctrl = $controller('MainCtrl', {$scope: scope, Samples: service});

详细示例:

describe('Main Controller', function() {
  var ctrl, scope, service;

  beforeEach(module('samples'));

  beforeEach(inject(function($controller, $rootScope, Samples) {
    scope = $rootScope.$new();
    service = Samples;

    //Create the controller with the new scope
    ctrl = $controller('MainCtrl', {
      $scope: scope,
      Samples: service
    });
  }));

  it('Should call get samples on initialization', function() {

  });
});