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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JS Bin</title>
  <link data-require="jasmine@*" data-semver="2.2.1" rel="stylesheet" href="http://cdnjs.cloudflare.com/ajax/libs/jasmine/2.2.1/jasmine.css" />
    <script data-require="jasmine@*" data-semver="2.2.1" src="http://cdnjs.cloudflare.com/ajax/libs/jasmine/2.2.1/jasmine.js"></script>
    <script data-require="jasmine@*" data-semver="2.2.1" src="http://cdnjs.cloudflare.com/ajax/libs/jasmine/2.2.1/jasmine-html.js"></script>
    <script data-require="jasmine@*" data-semver="2.2.1" src="http://cdnjs.cloudflare.com/ajax/libs/jasmine/2.2.1/boot.js"></script>
</head>
<body>
</body>
</html>
 
 var someObject = {
   submit: function () {
     console.log('Submit');
   }
 };
      
window.addEventListener('message', function(e) {
  if (e.data === "sendMessage()") {
    someObject.submit();
  }
}, false);
// window.postMessage('sendMessage()', '*');
describe('window.postMessage', function () {
  
  beforeEach(function(done) {  
    spyOn(someObject, 'submit').and.callFake(function () {
      done();
    });
    window.postMessage('sendMessage()', '*');
  });
  
  it('should submit on a sent message', function () {
    expect(someObject.submit).toHaveBeenCalled();
  });
});
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