如何用茉莉花测试 John papa vm.model 单元测试? [英] How to test John papa vm.model unit testing with jasmine?

问题描述

我使用 John papa 角度样式指南，我的控制器看起来像:

I use John papa angular style guide my controller looks like:

遵循风格约翰爸爸风格控制器风格指南:

function testController() {

    var vm = this;

    vm.model = { name: "controllerAs vm test" };
}

我的测试代码如下:

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

    beforeEach(module('myApp'));

    var testController;

    beforeEach(inject(function ($controller) {
        scope = {};

        testController = $controller('testController', {
        });

    }));

    it('should have vm.model defined and testController.vm.model is equal to controllerAs vm test', function () { 
        expect(testController.vm).toBeDefined();  
        expect(testController.vm.model).toBeDefined();     
        expect(testController.vm.model.name).toEqual("controllerAs vm test");
    });
});

结果:

测试失败:结果消息:预期未定义.在堆栈中

Test failed: Result Message: Expected undefined to be defined. at stack

所以我的问题是我们如何测试 vm.model 和其他变量?我没有在指南中找到合适的指南:controllers

So my question is how can we test vm.model and other variables from this? I have not found proper guide line in the guide lines: controllers

推荐答案

vm 通过 vm = this;

因此，所有属性都直接挂在对象上.

Therefore, all the properties are hanging directly off of the object.

function foo(){
  var vm = this;

  vm.name = 'Josh';
}

var myFoo = new foo();
myFoo.name; // 'Josh';

所以你需要做的就是改变你的期望以删除 vm 属性.

So all you need to do is change your expectations to remove the vm property.

expect(testController).toBeDefined();  
expect(testController.model).toBeDefined();     
expect(testController.model.name).toEqual("controllerAs vm test");

为了证明这一点，这是您的确切示例以及相关的 Jasmine 测试.

In order to prove this, here is your exact example, and the associated Jasmine tests.

function testController() {

  var vm = this;

  vm.model = {
    name: "controllerAs vm test"
  };
}


angular.module('myApp', [])
  .controller('testController', testController);

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

  beforeEach(module('myApp'));

  var testController;

  beforeEach(inject(function($controller) {
    scope = {};

    testController = $controller('testController', {});

  }));

  it('should have model defined and testController.model.name is equal to controllerAs vm test', function() {
    expect(testController).toBeDefined();
    expect(testController.model).toBeDefined();
    expect(testController.model.name).toEqual("controllerAs vm test");
  });

  it('should not have a property called vm', function() {
    expect(testController.vm).toBeUndefined();
  });
});

<link href="https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.2.1/jasmine.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.2.1/jasmine.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.2.1/jasmine-html.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jasmine/2.2.1/boot.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.0-beta.4/angular.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.0-beta.4/angular-mocks.js"></script>

这篇关于如何用茉莉花测试 John papa vm.model 单元测试?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！