Ember Controller example for Testing Ember.js

new_post_controller.js

App.NewPostController = Ember.ObjectController.extend({
  needs: ['currentUser'],
  currentUser: Ember.computed.alias('controllers.currentUser'),
  errors: [],
  
  validates: function() {
    var author, content, title;
    title = this.get('content.title');
    content = this.get('content.content');
    author = this.get('content.author');
    
    this.setErrors({
      title: title,
      content: content,
      author: author
    });
    
    return !Em.isEmpty(title) && !Em.isEmpty(content) && !Em.isEmpty(author);
  },
  
  setErrors: function(properties) {
    this.clearErrors();
    
    if (Em.isEmpty(properties.title)) {
      this.get('errors').pushObject('title');
    }
    
    if (Em.isEmpty(properties.content)) {
      this.get('errors').pushObject('content');
    }
    
    if (Em.isEmpty(properties.author)) {
      return this.get('errors').pushObject('author');
    }
  },
  
  clearErrors: function() {
    return this.get('errors').clear();
  },
  
  isErrored: (function() {
    return !Em.isEmpty(this.get('errors'));
  }).property('errors.@each'),
  
  isASingularError: (function() {
    return this.get('errors').length === 1;
  }).property('errors.@each'),
  
  isClear: (function() {
    return Em.isEmpty(this.get('content.title')) && Em.isEmpty(this.get('content.content'));
  }).property('content')
});