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EmberJS 测试控制器需求

2018-01-04 14:24 更新

描述

控制器可以通过使用需要对其他控制器具有依赖性。

例子

<!DOCTYPE html>
<html>
   <head>
      <title>Emberjs Controller Needs</title>
         <!-- CDN's -->
      <script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/3.0.1/handlebars.min.js"></script>
      <script src="https://code.jquery.com/jquery-2.1.3.min.js"></script>
      <script src="https://builds.emberjs.com/tags/v1.10.0-beta.3/ember-template-compiler.js"></script>
      <script src="https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.10.0/ember.prod.js"></script>
      <script src="https://code.jquery.com/qunit/qunit-1.18.0.js"></script>
      <script src="https://rawgit.com/rwjblue/ember-qunit-builds/master/ember-qunit.js"></script>
      <script src="https://builds.emberjs.com/release/ember.debug.js"></script>
      <script src="https://builds.emberjs.com/beta/ember-data.js"></script>
   </head>
<body>
   <div id="qunit"></div>
   <div id="ember-testing"></div>

   <script type="text/javascript">
      //Creates an instance of Ember.Application and assign it to a global variable
      App = Ember.Application.create();

      //The 'Ember.ObjectController' is part of Ember's Controller layer
      App.IndexController = Ember.ObjectController.extend();

      //'Ember.ArrayController' provides a way to publish a collection of objects which has some computed properties
      App.GettingController = Ember.ArrayController.extend({
         needs: 'index',
         name: Ember.computed.alias('controllers.index.name')
      });

      //These methods are used to prepare the application for testing
      //emq.globalize();
      App.setupForTesting();
      App.injectTestHelpers();

      //The 'DefaultResolver' defines the default lookup rules before consulting the container for registered items
      setResolver(Ember.DefaultResolver.create({ namespace: App }));

      //The 'moduleFor' helper is used to setup a test container
      moduleFor('controller:getting', 'Getting Controller', {

      //When we setup 'moduleFor', we need to pass an options object that has the controller's needs
         needs: ['controller:index']
      });
      test('modify the index', function() {
         //'this.subject()' is used to get an instance of the 'PostsController' and 'GettingController'
         var ctrl = this.subject(),
         indexCtrl = ctrl.get('controllers.index');

         //This is an async function and should be wrapped using 'Ember.run'
         Ember.run(function() {

            //Set a generic model on the index controller
            indexCtrl.set('model', Ember.Object.create({ name: 'Manu' }));

            //Check the values before we modify the post
            equal(ctrl.get('name'), 'Manu');

            //Modify the name of the post
            indexCtrl.get('model').set('name', 'Mike');

            //Informs that the controllers name has changed
            equal(ctrl.get('name'), 'Mike');
         });
      });
   </script>
</body>
</html>

输出

让我们执行以下步骤，看看上面的代码如何工作：

将上面的代码保存在testing_cntrlNeeds.html文件中
在浏览器中打开此HTML文件。

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