defer $q deffered promise angularjs nitin

var app = angular.module('plunker', []);

app.controller('MainCtrl', function($q, $scope) {
    $scope.name1 = 'fail';
  
 function asyncGreet(name) {
  var deferred = $q.defer();



    if ($scope.name1 == 'success') {
      $scope.name1 = 'RESOLVED SUCCESS';
      deferred.resolve('GOOD');
    } else if($scope.name1 == 'fail'){
      $scope.name1 = 'FUNCTION CALL PROMISE $Q REJECT FAILLLLLLLLLLLLLLLLEDDDDDDD';
      deferred.reject('BAD');
    }

  console.log('nitin')
  return deferred.promise;
}

var promise = asyncGreet('Robin Hood');
promise.then(function(greeting) {
  //alert('Success: ' + greeting);
}, function(reason) {
  //alert('Failed: ' + reason);
}, function(update) {
 // alert('Got notification: ' + update);
});

});

<!DOCTYPE html>
<html ng-app="plunker">

  <head>
    <meta charset="utf-8" />
    <title>AngularJS Plunker</title>
    <script>document.write('<base href="' + document.location + '" />');</script>
    <link rel="stylesheet" href="style.css" />
    <script data-require="angular.js@1.0.x" src="http://code.angularjs.org/1.0.7/angular.min.js" data-semver="1.0.7"></script>
    <script src="app.js"></script>
  </head>

  <body ng-controller="MainCtrl">
    <p>{{name1}}</p>
  </body>

</html>

/* Put your css in here */