notification-double-close.html | Explore in Territory

<!doctype html>
<html>
  <head>
    <title>Verifies that double-closing a notification doesn't crash.</title>
    <meta charset="utf-8">
  </head>
  <body>
    <script>
      function createNotification(iconUrl, title, text, tag) {
        var notification = new Notification(title, {
          icon: iconUrl,
          body: text,
          tag: tag
        });

        return new Promise(resolve => {
          notification.onshow = function() {
            resolve("0");  // success
          };

          notification.onerror = function() {
            resolve("-1");  // failure
          };

          notification.onclose = function() {
            notification.close();
          };
        });
      }
    </script>
  </body>
</html>

chromium/chrome/test/data/notifications/notification-double-close.html