Angular + Jasmine, testing debounce, $timeout and setTimeout

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

app.controller('MainCtrl', function($scope, $timeout) {
  $scope.name = 'World';

  $scope.delayed1 = function(){
    setTimeout(function(){
      $scope.name = "Hello world by setTimeout";
    },500);
  };

  $scope.delayed2 = function(){
    $timeout(function(){
      $scope.name = "Hello world by $timeout";
    },500);
  };

  $scope.delayed3 = _.debounce(function(){
    $scope.name = "Hello world by debounce";
  }, 500);
});

describe('Testing a Hello World controller', function() {
  var $scope;
  var ctrl;

  //you need to indicate your module in a test
  beforeEach(module('plunker'));
  
  beforeEach(function () {
      
  });

  beforeEach(inject(function($rootScope, $controller) {
    spyOn(_, 'debounce').and.callFake(function (func) {
      return function () {
        func.apply(this, arguments);
      }
    });

    $scope = $rootScope.$new();

    ctrl = $controller('MainCtrl', {
      $scope: $scope
    });
  }));

  it('should say hallo to the World', function() {
    expect($scope.name).toEqual('World');
  });

  it('should say Hello world by setTimeout', function() {
    jasmine.clock().install();
    $scope.delayed1();
    jasmine.clock().tick(600);
    expect($scope.name).toEqual('Hello world by setTimeout');
    jasmine.clock().uninstall();
  });

  it('should say Hello world by timeout', inject(function($timeout) {
    $scope.delayed2();
    $timeout.flush();
    expect($scope.name).toEqual('Hello world by $timeout');
  })); 

  it('should say Hello world by debouce', function() {
    $scope.delayed3();
    expect($scope.name).toEqual('Hello world by debounce');
  }); 
});

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

  <head>
    <meta charset="utf-8" />
    <title>AngularJS test</title>
    <link data-require="jasmine" data-semver="2.0.0" rel="stylesheet" href="//cdn.jsdelivr.net/jasmine/2.0.0/jasmine.css" />
    <script data-require="json2" data-semver="0.0.2012100-8" src="//cdnjs.cloudflare.com/ajax/libs/json2/20121008/json2.js"></script>
    <script data-require="jasmine" data-semver="2.0.0" src="//cdn.jsdelivr.net/jasmine/2.0.0/jasmine.js"></script>
    <script data-require="jasmine" data-semver="2.0.0" src="//cdn.jsdelivr.net/jasmine/2.0.0/jasmine-html.js"></script>
    <script data-require="jasmine@*" data-semver="2.0.0" src="//cdn.jsdelivr.net/jasmine/2.0.0/boot.js"></script>
    <script data-require="angular.js" data-semver="1.2.16" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.26/angular.min.js"></script>
    <script data-require="angular-mocks" data-semver="1.2.16" src="https://code.angularjs.org/1.2.26/angular-mocks.js"></script>
    <link rel="stylesheet" href="style.css" />
    <script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.js"></script>
    <script src="app.js"></script>
    <script src="appSpec.js"></script>
    <script src="jasmineBootstrap.js"></script>
    <!-- bootstraps Jasmine -->
  </head>

  <body>
    <div id="container" ng-controller="MainCtrl">
      <h1>Hello {{name}}</h1>
    </div>
    <div id="HTMLReporter" class="jasmine_reporter"></div>
  </body>

</html>

(function() {
  var jasmineEnv = jasmine.getEnv();
  jasmineEnv.updateInterval = 250;

  /**
   Create the `HTMLReporter`, which Jasmine calls to provide results of each spec and each suite. The Reporter is responsible for presenting results to the user.
   */
  var htmlReporter = new jasmine.HtmlReporter();
  jasmineEnv.addReporter(htmlReporter);

  /**
   Delegate filtering of specs to the reporter. Allows for clicking on single suites or specs in the results to only run a subset of the suite.
   */
  jasmineEnv.specFilter = function(spec) {
    return htmlReporter.specFilter(spec);
  };

  /**
   Run all of the tests when the page finishes loading - and make sure to run any previous `onload` handler

   ### Test Results

   Scroll down to see the results of all of these specs.
   */
  var currentWindowOnload = window.onload;
  window.onload = function() {
    if (currentWindowOnload) {
      currentWindowOnload();
    }

    //document.querySelector('.version').innerHTML = jasmineEnv.versionString();
    execJasmine();
  };

  function execJasmine() {
    jasmineEnv.execute();
  }
})();

/* restore "body" styling that were changes by "jasmine.css"... */
body { background-color: white; padding: 0; margin: 8px; }
/* ... but remain the "jasmine.css" styling for the Jasmine reporting */
.jasmine_reporter { background-color: #eeeeee; padding: 0; margin: 0; }