The Tor Browser: dom/workers/test/xhr2_worker.js@925c144e1f1f (annotated)

dom/workers/test/xhr2_worker.js@925c144e1f1f (annotated)

dom/workers/test/xhr2_worker.js

Fri, 16 Jan 2015 18:13:44 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Fri, 16 Jan 2015 18:13:44 +0100
branch: TOR_BUG_9701
changeset 14: 925c144e1f1f
permissions: -rw-r--r--

Integrate suggestion from review to improve consistency with existing code.

 /**
  * Any copyright is dedicated to the Public Domain.
  * http://creativecommons.org/publicdomain/zero/1.0/
  */
 onmessage = function(event) {
   const url = event.data;
   var xhr = new XMLHttpRequest();
   xhr.open("GET", url, false);
   xhr.send();
   const refText = xhr.responseText;
   function getResponse(type) {
     var xhr = new XMLHttpRequest();
     xhr.open("GET", url, false);
     if (type !== undefined) {
       xhr.responseType = type;
     }
     xhr.send();
     return xhr.response;
   }
   if (getResponse() != refText) {
     throw new Error("unset responseType failed");
   }
   if (getResponse("") != refText) {
     throw new Error("'' responseType failed");
   }
   if (getResponse("text") != refText) {
     throw new Error("'text' responseType failed");
   }
   var array = new Uint8Array(getResponse("arraybuffer"));
   if (String.fromCharCode.apply(String, array) != refText) {
     throw new Error("'arraybuffer' responseType failed");
   }
   var blob = getResponse("blob");
   if (new FileReaderSync().readAsText(blob) != refText) {
     throw new Error("'blob' responseType failed");
   }
   // Make sure that we get invalid state exceptions when getting the wrong
   // property.
   function testResponseTextException(type) {
     var xhr = new XMLHttpRequest();
     xhr.open("GET", url, false);
     xhr.responseType = type;
     xhr.send();
     var exception;
     try {
       xhr.responseText;
     }
     catch(e) {
       exception = e;
     }
     if (!exception) {
       throw new Error("Failed to throw when getting responseText on '" + type +
                       "' type");
     }
     if (exception.name != "InvalidStateError") {
       throw new Error("Unexpected error when getting responseText on '" + type +
                       "' type");
     }
     if (exception.code != DOMException.INVALID_STATE_ERR) {
       throw new Error("Unexpected error code when getting responseText on '" + type +
                       "' type");
     }
   }
   testResponseTextException("arraybuffer");
   testResponseTextException("blob");
   // Make sure "document" works, but returns text.
   xhr = new XMLHttpRequest();
   if (xhr.responseType != "text") {
     throw new Error("Default value for responseType is wrong!");
   }
   xhr.open("GET", url, false);
   xhr.responseType = "document";
   xhr.send();
   if (xhr.responseText != refText) {
     throw new Error("'document' type not working correctly");
   }
   // Make sure setting responseType before open or after send fails.
   var exception;
   xhr = new XMLHttpRequest();
   try {
     xhr.responseType = "arraybuffer";
   }
   catch(e) {
     exception = e;
   }
   if (!exception) {
     throw new Error("Failed to throw when setting responseType before " +
                     "calling open()");
   }
   if (exception.name != "InvalidStateError") {
     throw new Error("Unexpected error when setting responseType before " +
                     "calling open()");
   }
   if (exception.code != DOMException.INVALID_STATE_ERR) {
     throw new Error("Unexpected error code when setting responseType before " +
                     "calling open()");
   }
   xhr.open("GET", url);
   xhr.responseType = "text";
   xhr.onload = function(event) {
     if (event.target.response != refText) {
       throw new Error("Bad response!");
     }
     xhr = new XMLHttpRequest();
     xhr.open("GET", url);
     xhr.responseType = "moz-chunked-text";
     var lastIndex = 0;
     xhr.onprogress = function(event) {
       if (refText.substr(lastIndex, xhr.response.length) != xhr.response) {
         throw new Error("Bad chunk!");
       }
       lastIndex += xhr.response.length;
     };
     xhr.onload = function(event) {
       if (lastIndex != refText.length) {
         throw new Error("Didn't see all the data!");
       }
       setTimeout(function() {
         if (xhr.response !== null) {
           throw new Error("Should have gotten null response outside of event!");
         }
         postMessage("done");
       }, 0);
     }
     xhr.send(null);
   };
   xhr.send();
   exception = null;
   try {
     xhr.responseType = "arraybuffer";
   }
   catch(e) {
     exception = e;
   }
   if (!exception) {
     throw new Error("Failed to throw when setting responseType after " +
                     "calling send()");
   }
   if (exception.name != "InvalidStateError") {
     throw new Error("Unexpected error when setting responseType after " +
                     "calling send()");
   }
   if (exception.code != DOMException.INVALID_STATE_ERR) {
     throw new Error("Unexpected error code when setting responseType after " +
                     "calling send()");
   }
 }