Pass through readInfo.resultCode.

chrome/test/data/extensions/api_test/socket/api/background.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // net/tools/testserver/testserver.py is picky about the format of what it
 // calls its "echo" messages. One might go so far as to mutter to oneself that
 // it isn't an echo server at all.
 //
 // The response is based on the request but obfuscated using a random key.
 const request = "0100000005320000005hello";
@@ skipping 58 matching lines @@
     //
     //socket.destroy(socketInfo.socketId);
 
     chrome.test.succeed();
   }
 
   socket.create(protocol, address, port, {onEvent: function(e) {}}, onCreate);
 };
 
 function onDataRead(readInfo) {
+  if (readInfo.resultCode > 0 || readInfo.data.length > 0) {
+    chrome.test.assertEq(readInfo.resultCode, readInfo.data.length);
+  }
+
   // TODO(miket): this isn't correct for multiple calls of onDataRead.
   arrayBuffer2String(arrayOfLongsToArrayBuffer(readInfo.data), function(s) {
       dataAsString = s;  // save this for error reporting
       if (s.match(expectedResponsePattern)) {
         succeeded = true;
         chrome.test.succeed();
       }
     });
   // Blocked. Wait for onEvent.
 }
@@ skipping 19 matching lines @@
 function onCreate(socketInfo) {
   socketId = socketInfo.socketId;
   chrome.test.assertTrue(socketId > 0, "failed to create socket");
   socket.connect(socketId, onConnectComplete);
 }
 
 function onEvent(socketEvent) {
   if (socketEvent.type == "connectComplete") {
     onConnectComplete(socketEvent.resultCode);
   } else if (socketEvent.type == "dataRead") {
-    onDataRead({data: socketEvent.data});
+    onDataRead({resultCode: socketEvent.resultCode, data: socketEvent.data});
   } else if (socketEvent.type == "writeComplete") {
     onWriteComplete(socketEvent.resultCode);
   } else {
     console.log("Received unhandled socketEvent of type " + socketEvent.type);
   }
 };
 
 function waitForBlockingOperation() {
   if (++waitCount < 10) {
     setTimeout(waitForBlockingOperation, 1000);
@@ skipping 19 matching lines @@
   address = parts[1];
   port = parseInt(parts[2]);
   console.log("Running tests, protocol " + protocol + ", echo server " +
               address + ":" + port);
   chrome.test.runTests([ testSocketCreation, testSending ]);
 };
 
 // Find out which protocol we're supposed to test, and which echo server we
 // should be using, then kick off the tests.
 chrome.test.sendMessage("info_please", onMessageReply);