Angular dynamic variable name create in html

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

  <head>
    <script data-require="angular.js@1.5.8" data-semver="1.5.8" src="https://code.angularjs.org/1.5.8/angular.js"></script>
    <link rel="stylesheet" href="style.css" />
    <script src="script.js"></script>
  </head>

  <body ng-controller="main-controller">
    <ul>
      <li ng-repeat="item in [1,2,3]">{{this["test_"+item] ? "Doğru" : "Doğru Değil"}}</li>
    </ul>
  </body>

</html>

var app = angular.module("app", []);
app.controller("main-controller", function($scope) {
  $scope.test_1 = true;
  $scope.test_2 = false;
  $scope.test_3 = true;
});

/* Styles go here */