Question

执行期间出错..

Error: [$injector:unpr] Unknown provider: secondServiceProvider <- secondService

my.component.controller.ts

import { FirstService } from '../../first.service';
import { SecondService } from '../../second.service';

export class MyComponentController {
  constructor(
    public $state: ng.ui.IStateService,
    private firstService: FirstService,
    private secondService: SecondService) { }
}

MyComponentController.$inject = [
  '$state', 
  FirstService.registeredName, 
  SecondService.registeredName];

my.component.spec.ts

import { FirstService } from '../../first.service';
import { SecondService } from '../../second.service';
import { MyModule } from '../index';

describe('Component: my', () => {

  let $componentController: angular.IComponentControllerService;
  let firstService: FirstService;
  let secondService: SecondService;
  let scope: angular.IScope;
  let $state: ng.ui.IStateService;

  beforeEach(() => {
    angular.mock.module('ui.router');
    angular.mock.module(MyModule.name);
  });

  beforeEach(inject(
    ($rootScope: angular.IScope,
      _$state_: ng.ui.IStateService,
      _$componentController_: angular.IComponentControllerService) => {
      scope = $rootScope.$new();
      $state = _$state_;
      firstService = new FirstService();
      secondService = new SecondService();
      $componentController = _$componentController_;
    }));

  describe('Controller: MyComponentController', () => {
    it('should create an instance of MyComponentController', () => {
      let ctrl: any = $componentController('my', { $scope: scope }, { $state: $state, firstService: firstService, secondService: secondService });
      expect(ctrl).toBeDefined();
    });
  });
});

Answer 1

$componentController使用不当。第三个参数是绑定。模拟服务是依赖项，$scope也是如此。它应该是：

$componentController('my', {
  $scope: scope, $state: $state, firstService: firstService, secondService: secondService
});

以这种方式提供真正的依赖关系绝对没有意义，默认情况下会提供它们。根据经验，所有单位但经过测试的单位（控制器）都应该被嘲笑或存根。

真正的路由器不应该用于单元测试。应排除ui.router，并在必要时对其服务进行模拟或删除。

单元测试期间未知的服务提供商

1 个答案: