pkgs/timezone/test/datetime_browser_test.html

<!DOCTYPE html>

<html>
  <head>
  	<meta charset="utf-8">
  	<meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>test_datetime_browser</title>
    <link rel="x-dart-test" href="datetime_browser_test.dart">
  </head>
 
  <body>   
    <p id="text"></p>
    <script type="application/dart" src="test_datetime_browser.dart"></script>
    <!-- for this next line to work, your pubspec.yaml file must have a dependency on 'browser' -->
    <script src="packages/browser/dart.js"></script>
    <script src="packages/test/dart.js"></script>
  </body>
</html>