The Tor Browser: dom/system/gonk/tests/header_helpers.js@b8a032363ba2 (annotated)

dom/system/gonk/tests/header_helpers.js@b8a032363ba2 (annotated)

dom/system/gonk/tests/header_helpers.js

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
 let subscriptLoader = Cc["@mozilla.org/moz/jssubscript-loader;1"]
                         .getService(Ci.mozIJSSubScriptLoader);
 /**
  * Start a new RIL worker.
  *
  * @param custom_ns
  *        Namespace with symbols to be injected into the new worker
  *        namespace.
  *
  * @return an object that represents the worker's namespace.
  *
  * @note that this does not start an actual worker thread. The worker
  * is executed on the main thread, within a separate namespace object.
  */
 function newWorker(custom_ns) {
   let worker_ns = {
     importScripts: function() {
       Array.slice(arguments).forEach(function(script) {
         if (!script.startsWith("resource:")) {
           script = "resource://gre/modules/" + script;
         }
         subscriptLoader.loadSubScript(script, this);
       }, this);
     },
     postRILMessage: function(message) {
     },
     postMessage: function(message) {
     },
     // Define these variables inside the worker scope so ES5 strict mode
     // doesn't flip out.
     onmessage: undefined,
     onerror: undefined,
     DEBUG: true
   };
   // The 'self' variable in a worker points to the worker's own namespace.
   worker_ns.self = worker_ns;
   // Copy the custom definitions over.
   for (let key in custom_ns) {
     worker_ns[key] = custom_ns[key];
   }
   // fake require() for toolkit/components/workerloader/require.js
   let require = (function() {
     return function require(script) {
       worker_ns.module = {};
       worker_ns.importScripts(script);
       return worker_ns;
     }
   })();
   Object.freeze(require);
   Object.defineProperty(worker_ns, "require", {
     value: require,
     enumerable: true,
     configurable: false
   });
   // Load the RIL worker itself.
   worker_ns.importScripts("ril_worker.js");
   // Register at least one client.
   worker_ns.ContextPool.registerClient({ clientId: 0 });
   return worker_ns;
 }
 /**
  * Create a parcel suitable for postRILMessage().
  *
  * @param fakeParcelSize
  *        Value to be written to parcel size field for testing
  *        incorrect/incomplete parcel reading. Replaced with correct
  *        one determined length of data if negative.
  * @param response
  *        Response code of the incoming parcel.
  * @param request
  *        Request code of the incoming parcel.
  * @param data
  *        Extra data to be appended.
  *
  * @return an Uint8Array carrying all parcel data.
  */
 function newIncomingParcel(fakeParcelSize, response, request, data) {
   const UINT32_SIZE = 4;
   const PARCEL_SIZE_SIZE = 4;
   let realParcelSize = data.length + 2 * UINT32_SIZE;
   let buffer = new ArrayBuffer(realParcelSize + PARCEL_SIZE_SIZE);
   let bytes = new Uint8Array(buffer);
   let writeIndex = 0;
   function writeUint8(value) {
     bytes[writeIndex] = value;
     ++writeIndex;
   }
   function writeInt32(value) {
     writeUint8(value & 0xff);
     writeUint8((value >> 8) & 0xff);
     writeUint8((value >> 16) & 0xff);
     writeUint8((value >> 24) & 0xff);
   }
   function writeParcelSize(value) {
     writeUint8((value >> 24) & 0xff);
     writeUint8((value >> 16) & 0xff);
     writeUint8((value >> 8) & 0xff);
     writeUint8(value & 0xff);
   }
   if (fakeParcelSize < 0) {
     fakeParcelSize = realParcelSize;
   }
   writeParcelSize(fakeParcelSize);
   writeInt32(response);
   writeInt32(request);
   // write parcel data
   for (let ii = 0; ii < data.length; ++ii) {
     writeUint8(data[ii]);
   }
   return bytes;
 }
 /**
  *
  */
 let ril_ns;
 function newRadioInterface() {
   if (!ril_ns) {
     ril_ns = {};
     subscriptLoader.loadSubScript("resource://gre/components/RadioInterfaceLayer.js", ril_ns);
   }
   return {
     __proto__: ril_ns.RadioInterface.prototype,
   };
 }
 /**
  * Test whether specified function throws exception with expected
  * result.
  *
  * @param func
  *        Function to be tested.
  * @param message
  *        Message of expected exception. <code>null</code> for no throws.
  * @param stack
  *        Optional stack object to be printed. <code>null</code> for
  *        Components#stack#caller.
  */
 function do_check_throws(func, message, stack)
 {
   if (!stack)
     stack = Components.stack.caller;
   try {
     func();
   } catch (exc) {
     if (exc.message === message) {
       return;
     }
     do_throw("expecting exception '" + message
              + "', caught '" + exc.message + "'", stack);
   }
   if (message) {
     do_throw("expecting exception '" + message + "', none thrown", stack);
   }
 }