<!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <!DOCTYPE HTML> <html> <head> <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"> </script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> </head> <body> <script type="text/javascript"> const message = "hi"; const workerScript = "onmessage = function(event) {" + " postMessage(event.data);" + "};"; var worker = new Worker(URL.createObjectURL(new Blob([workerScript]))); worker.onmessage = function(event) { is(event.data, message, "Got correct message"); SimpleTest.finish(); }; worker.postMessage(message); SimpleTest.waitForExplicitFinish(); </script> </body> </html>