this.EXPORTED_SYMBOLS = ["Test"]; this.Test = { start: function(ok, is, finish) { let worker = new ChromeWorker("jsm_url_worker.js"); worker.onmessage = function(event) { if (event.data.type == 'finish') { finish(); } else if (event.data.type == 'status') { ok(event.data.status, event.data.msg); } else if (event.data.type == 'url') { var xhr = Components.classes["@mozilla.org/xmlextras/xmlhttprequest;1"] .createInstance(Components.interfaces.nsIXMLHttpRequest); xhr.open('GET', event.data.url, false); xhr.onreadystatechange = function() { if (xhr.readyState == 4) { ok(true, "Blob readable!"); } } xhr.send(); } }; var self = this; worker.onerror = function(event) { is(event.target, worker); ok(false, "Worker had an error: " + event.data); self.worker.terminate(); finish(); }; worker.postMessage(0); } };