Add validation to length, packets and packetLength parameters

chrome/test/data/extensions/api_test/usb/invalid_length_transfer/test.js

 // Copyright (c) 2013 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.
 
 var usb = chrome.usb;
 
 var genericTransfer = {
   "direction": "in",
   "endpoint": 1,
   "length": -1
 };
 var controlTransfer = {
   "index": 0,
   "direction": "in",
   "requestType": "standard",
   "recipient": "device",
   "request": 0,
   "value": 0,
   "length": -1
 };
 var isoTransfer = {
   "packetLength": 0,
   "transferInfo": genericTransfer,
   "packets": 0
 };
-var errorMessage = 'Transfer length must be a ' +
+var errorTransferLength = 'Transfer length must be a ' +
     'positive number less than 104,857,600.';
+var errorNumPackets = 'Number of packets must be a ' +
+    'positive number less than 4,194,304.';
+var errorPacketLength = 'Packet length must be a ' +
+    'positive number less than 65,536.';
+var errorInsufficientTransferLength = 'Transfer length is insufficient.';
 var largeSize = 100 * 1024 * 1024 + 1;
+var maxPackets = 4 * 1024 * 1024;
+var maxPacketLength = 64 * 1024;
 
 function createInvalidTransferTest(usbFunction, transferInfo, transferLength) {
   return function() {
     genericTransfer["length"] = transferLength;
     controlTransfer["length"] = transferLength;
     usb.findDevices({vendorId: 0, productId: 0}, function(devices) {
       var device = devices[0];
       usbFunction(device, transferInfo, chrome.test.callbackFail(
-          errorMessage, function() {}));
+          errorTransferLength, function() {}));
+    });
+  };
+}
+
+function createInvalidPacketLengthTest(
+    transferLength, packets, packetLength, errorMessage) {
+  return function() {
+    genericTransfer["length"] = transferLength;
+    isoTransfer["packets"] = packets;
+    isoTransfer["packetLength"] = packetLength;
+    usb.findDevices({vendorId: 0, productId: 0}, function(devices) {
+      var device = devices[0];
+      usb.isochronousTransfer(device, isoTransfer,
+          chrome.test.callbackFail(
+              errorMessage, function() {}));
     });
   };
 }
 
 var tests = [
   createInvalidTransferTest(usb.bulkTransfer, genericTransfer, -1),
   createInvalidTransferTest(usb.controlTransfer, controlTransfer, -1),
   createInvalidTransferTest(usb.interruptTransfer, genericTransfer, -1),
   createInvalidTransferTest(usb.isochronousTransfer, isoTransfer, -1),
   createInvalidTransferTest(usb.bulkTransfer, genericTransfer, largeSize),
   createInvalidTransferTest(usb.controlTransfer, controlTransfer, largeSize),
   createInvalidTransferTest(usb.interruptTransfer, genericTransfer, largeSize),
-  createInvalidTransferTest(usb.isochronousTransfer, isoTransfer, largeSize)
+  createInvalidTransferTest(usb.isochronousTransfer, isoTransfer, largeSize),
+
+  createInvalidPacketLengthTest(1024, -1, 0, errorNumPackets),
+  createInvalidPacketLengthTest(maxPackets, maxPackets, 0, errorNumPackets),
+  createInvalidPacketLengthTest(1024, 100, -1, errorPacketLength),
+  createInvalidPacketLengthTest(1024, 100, maxPacketLength, errorPacketLength),
+  createInvalidPacketLengthTest(1024, 1025, 0, errorInsufficientTransferLength)
 ];
 
 chrome.test.runTests(tests);