EmberJS-Testing Models

Testing Models

In Ember, every route has an model which is set by implementing a route's 'model' hook. The models of Ember can be tested using the moduleForModel helper.

Example

<!DOCTYPE html>
<html>
   <head>
      <title>EmberJs Tesing Models</title>
      <link href="https://code.jquery.com/qunit/qunit-git.css" rel="stylesheet" type="text/css" />
      <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();

         //Create a subclass of 'DS.Model' for 'Employee' model in the application
         App.Employee = DS.Model.extend({
            //Specify which attributes a model has by using 'DS.attr'
            Empno: DS.attr('number', { defaultNum: 0 }),
            EmpName: DS.attr('string', { defaultName: 'Mack' }),

            //Create a test which will call 'EmpSalary' on the player when they are level 4 to assert that the 'EmpName' changes
            EmpSalary: function() {
               var Eno = this.incrementProperty('Empno');
               if (Eno === 5) {
                  this.set('EmpName', 'Manu');
               }
            }
         });

         //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 }));
         App.rootElement = '#ember-testing';   //Ember.js applications's root element

         //The 'moduleFor' helper is used to setup a test container
         moduleForModel('employee', 'Employee Model');
         test('EmpSalary', function() {
            var employee = this.subject({ Empno: 4 });
            //This is an async function and should be wrapped using 'Ember.run'
            Ember.run(function() {
               employee.EmpSalary();
            });
            //Check the values before we modify the post
            equal(employee.get('Empno'), 5);
            equal(employee.get('EmpName'), 'Manu');
         });
      </script>
   </body>
</html>

Output

Let's carry out the following steps to see how above code works −

  • Save above code in testing_models.htm file

  • Open this HTML file in a browser.

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