mayFire.js

mayFire.js

/*  # Testing oberserved properties in Ember.js 
    It can happen that observers are still firing after testing your property, this snippets
    lets you define an regex to catch errors, and make it look slightly nicer.
*/

import Ember from 'ember';

export default function mayFire(regEx, callback, scope){
  var result;
  scope = scope || this;

  Ember.onerror = (function(){
    var count, errorRegEx;
    count = 0;
    errorRegEx = regEx;
    return function(error){
      if(errorRegEx.test(error.message)){
        count += 1; // Lets prevent it from cluttering the console.
        if(count === 0){
          // TODO: Console aint working
          console.log(error.message);
        }
      } else {
        throw error;
      }
    };
  })();

  stop();

  return function(){
    var args; 
    args = arguments;
    // Lets delay
    setTimeout(function(){
      callback.apply(scope, args);
      start();
    }, 100);
  };
}


// Now you can call mayFire
test('Bar draws once', function(){
  expect(2);
  
  return this.store().find('team').then(mayFire(/didSetProperty/, function(teams){
    equal(teams.content[1].get('draws'), 1, 'Foo draws against bar');
    equal(teams.content[2].get('draws'), 1, 'Bar draws against foo');  
  }, this));

});