new_contents: describe('Service: $cordovaCamera', function() {
  
    var $cordovaVibration;
  
    beforeEach(module('ngCordova.plugins.vibration'));
  
    beforeEach(inject(function (_$cordovaVibration_) {
      $cordovaVibration = _$cordovaVibration_;
  
      navigator.notification = jasmine.createSpyObj('notification', ['vibrate', 'vibrateWithPattern', 'cancelVibration']);
    }));
  
    it('should call navigator\'s notification.vibrate method', function() {
      $cordovaVibration.vibrate(10);
      expect(navigator.notification.vibrate).toHaveBeenCalledWith(10);
    });
  
    it('should call navigator\'s notification.vibrateWithPattern method', function() {
      var pattern = [1, 5, 8];
      $cordovaVibration.vibrateWithPattern(pattern, true);
      expect(navigator.notification.vibrateWithPattern).toHaveBeenCalledWith(pattern, true);
    });
  
    it('should call navigator\'s notification.cancelVibration method', function() {
      $cordovaVibration.cancelVibration();
      expect(navigator.notification.cancelVibration).toHaveBeenCalled();
    });
  });
  
subject: add unit test