src/chrome/test/data/extensions/api_test/usb/reset_device/test.js

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 var usb = chrome.usb;
   6
   7 function resetDevice() {
   8   usb.findDevices({vendorId: 0, productId: 0}, function(devices) {
   9     usb.resetDevice(devices[0], function(result) {
  10       chrome.test.assertEq(result, true);
  11       // Ensure the device is still open.
  12       var transfer = {
  13         direction: "out",
  14         endpoint: 2,
  15         data: new ArrayBuffer(1)
  16       };
  17       usb.interruptTransfer(devices[0], transfer, function(result) {
  18         // This is designed to fail.
  19         usb.resetDevice(devices[0], function(result) {
  20           chrome.test.assertEq(result, false);
  21           usb.interruptTransfer(devices[0], transfer, function(result) {
  22             chrome.test.assertEq(result, undefined);
  23             chrome.test.assertEq(
  24                 chrome.runtime.lastError && chrome.runtime.lastError.message,
  25                 'No such device.'
  26             );
  27             chrome.test.succeed();
  28           });
  29         });
  30       });
  31     });
  32   });
  33 }
  34
  35 chrome.test.runTests([resetDevice]);