michael@0: /**
michael@0:  * Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/publicdomain/zero/1.0/
michael@0:  */
michael@0: function runTest() {
michael@0:   var xhr = new XMLHttpRequest();
michael@0: 
michael@0:   var events = [];
michael@0:   function pushEvent(event) {
michael@0:     var readyState, responseText, status, statusText;
michael@0: 
michael@0:     try {
michael@0:       readyState = xhr.readyState;
michael@0:     }
michael@0:     catch (e) {
michael@0:       readyState = "[exception]";
michael@0:     }
michael@0: 
michael@0:     try {
michael@0:       responseText = xhr.responseText;
michael@0:     }
michael@0:     catch (e) {
michael@0:       responseText = "[exception]";
michael@0:     }
michael@0: 
michael@0:     try {
michael@0:       status = xhr.status;
michael@0:     }
michael@0:     catch (e) {
michael@0:       status = "[exception]";
michael@0:     }
michael@0: 
michael@0:     try {
michael@0:       statusText = xhr.statusText;
michael@0:     }
michael@0:     catch (e) {
michael@0:       statusText = "[exception]";
michael@0:     }
michael@0: 
michael@0:     var str = event.type + "(" + readyState + ", '" + responseText + "', " +
michael@0:               status + ", '" + statusText + "'";
michael@0:     if ((("ProgressEvent" in this) && event instanceof ProgressEvent) ||
michael@0:         (("WorkerProgressEvent" in this) && event instanceof WorkerProgressEvent)) {
michael@0:       str += ", progressEvent";
michael@0:     }
michael@0:     str += ")";
michael@0: 
michael@0:     events.push(str);
michael@0:   }
michael@0: 
michael@0:   xhr.onerror = function(event) {
michael@0:     throw new Error("Error: " + xhr.statusText);
michael@0:   }
michael@0: 
michael@0:   xhr.onload = function(event) {
michael@0:     throw new Error("Shouldn't have gotten load event!");
michael@0:   };
michael@0: 
michael@0:   var seenAbort;
michael@0:   xhr.onabort = function(event) {
michael@0:     if (seenAbort) {
michael@0:       throw new Error("Already seen the abort event!");
michael@0:     }
michael@0:     seenAbort = true;
michael@0: 
michael@0:     pushEvent(event);
michael@0:     postMessage(events);
michael@0:   };
michael@0: 
michael@0:   xhr.onreadystatechange = function(event) {
michael@0:     pushEvent(event);
michael@0:     if (xhr.readyState == xhr.HEADERS_RECEIVED) {
michael@0:       xhr.abort();
michael@0:     }
michael@0:   };
michael@0: 
michael@0:   xhr.open("GET", "testXHR.txt");
michael@0:   xhr.overrideMimeType("text/plain");
michael@0:   xhr.send(null);
michael@0: }
michael@0: 
michael@0: function messageListener(event) {
michael@0:   switch (event.data) {
michael@0:     case "start":
michael@0:       runTest();
michael@0:       break;
michael@0:     default:
michael@0:       throw new Error("Bad message!");
michael@0:   }
michael@0: }
michael@0: 
michael@0: addEventListener("message", messageListener, false);