Angular Controller Mock在我的Mocha测试中并不适用

时间:2015-09-18 20:30:46

标签: javascript angularjs unit-testing testing karma-mocha

目前使用karma-mocha 0.2.0和karma-chai 0.1.0运行Angular 1.2.x.

以下是我尝试为基于MentorAvailabilityDashboardCtrl模块的Mentors编写一些简单的单元测试。当单独运行时,一切都会通过,但是当我按原样运行测试时,我得到一个错误,指出“错误:[ng:areq]参数'MentorAvailabilityDashboardCtrl'不是函数,未定义”

这让我觉得Mocha或AngularMock在测试运行一次后被重置,之后是未定义的。

实施例

一次测试全部运行

  • 第一次测试=通过
  • 第二次测试=失败“MentorAvailabilityDashboardCtrl未定义”
  • 第3次测试=失败“MentorAvailabilityDashboardCtrl未定义”
  • 第4次测试=失败“MentorAvailabilityDashboardCtrl未定义”

一次测试所有测试(评论其他测试)

  • 第一次测试=通过
  • 第二次测试=通过
  • 第3次测试=通过
  • 第4次测试=通过

问题:

为什么我的控制器在第一次测试运行后未定义,并且在每次测试运行时,我能做些什么让它保持不变?

我的代码:

'use strict';
/* globals gon: false */

import angular from 'angular';

describe('MentorAvailabilityDashboardCtrl', function() {
  let createController, $scope;

  beforeEach(function() {
    angular.module('Mentors', []);
    require('./mentor_availability_dashboard')
    angular.mock.module('Mentors');
  });

  beforeEach(angular.mock.inject(function ($rootScope, $controller) {
      function MockMentorProfile() {}
      function MockFlash() {}

      $scope = $rootScope.$new()
      createController = $controller('MentorAvailabilityDashboardCtrl', {
        $scope: $scope,
        MentorProfile: MockMentorProfile,
        Flash: MockFlash
      });
  }));

  describe('validation checks', function() {
    it('should invalidate form fields on initialization', function() {
      expect($scope.validatedFields()).to.eq(false);
    });

    it('should validate specifc field on initialization', function() {
      $scope.courseFilter = 'Rails';

      expect($scope.fieldValidated($scope.courseFilter)).to.eq(true);
    });

    it('should validate form fields on completion', function() {
      $scope.courseFilter = 'Rails';
      $scope.osFilter = 'Windows';
      $scope.studentFilter = { student: 'Billy' };
      $scope.paceFilter = '12 weeks';
      $scope.startFilter = { monday: 'Monday' };

      expect($scope.validatedFields()).to.eq(true);
    });

    it('should be able to click form with clearForm()', function() {
      $scope.courseFilter = 'Rails';
      $scope.clearForm()

      expect($scope.courseFilter).to.eq('');
    });
  });

});

实际错误:

PhantomJS 1.9.8 (Mac OS X 0.0.0) MentorAvailabilityDashboardCtrl "before each" hook: workFn for "should validate specifc field on initialization" FAILED
    Error: [ng:areq] Argument 'MentorAvailabilityDashboardCtrl' is not a function, got undefined
    http://errors.angularjs.org/1.2.26/ng/areq?p0=MentorAvailabilityDashboardCtrl&p1=not%20a%20function%2C%20got%20undefined
        at assertArg (/Users/bdoug/Bloc/vendor/assets/bower_components/angular/angular.js:1509)
        at assertArgFn (/Users/bdoug/Bloc/vendor/assets/bower_components/angular/angular.js:1520)
        at /Users/bdoug/Bloc/vendor/assets/bower_components/angular/angular.js:7278
        at /Users/bdoug/Bloc/frontend/test/tests_index.js:15072 <- webpack:///frontend/legacy_org/mentors/mentor_availability_dashboard.test.js:23:8
        at invoke (/Users/bdoug/Bloc/vendor/assets/bower_components/angular/angular.js:3966)
        at workFn (/Users/bdoug/Bloc/vendor/assets/bower_components/angular-mocks/angular-mocks.js:2161)

1 个答案:

答案 0 :(得分:2)

看起来你需要在beforeEach块中使用控制器定义,这可能与它有关。可能是一个范围问题。您可以尝试完全避免角度模拟,直接测试控制器功能。由于您使用的是es6模块,因此可以将控制器功能直接导出为命名导出。

export function MyController($scope, Flash) {
 //...
}

MyController.$inject = ['$scope', 'Flash'];

angular.module('Mentors').controller('MyController')

然后在测试中

import sinon from 'sinon';
import {MyController} from './my_controller'


it('...', function() {
  let scope = {};
  let Flash = sinon.mock();

  MyController(scope, Flash);

  //... assertions
})