src/chrome/test/data/extensions/api_test/image_writer_private/write_from_file/test.js

   1 // Copyright 2014 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 function assertNotNullOrUndefined(value, message) {
   6   chrome.test.assertTrue(value !== null, message);
   7   chrome.test.assertTrue(value !== undefined, message);
   8 }
   9
  10 function testWriteFromFile() {
  11   var fileEntry;
  12   var storageDevice;
  13   var currentStage = "none";
  14   var currentProgress = -1;
  15   var started = true;
  16
  17   function chooseEntryCallback(entry) {
  18     fileEntry = entry;
  19
  20     chrome.imageWriterPrivate.listRemovableStorageDevices(
  21         listDevicesCallback);
  22   }
  23
  24   function listDevicesCallback(deviceList) {
  25     chrome.test.assertTrue(deviceList.length >= 1);
  26     storageDevice = deviceList[0];
  27
  28     startWrite();
  29   }
  30
  31   function startWrite() {
  32     assertNotNullOrUndefined(fileEntry, "FileEntry should be defined.");
  33     assertNotNullOrUndefined(
  34         storageDevice.storageUnitId, "Storage Unit should be defined.");
  35
  36     chrome.imageWriterPrivate.writeFromFile(
  37         storageDevice.storageUnitId,
  38         fileEntry,
  39         startWriteCallback);
  40   }
  41
  42   function startWriteCallback() {
  43     started = true;
  44   }
  45
  46   function writeProgressCallback(progressInfo) {
  47     currentProgress = progressInfo.percentComplete;
  48     currentStage = progressInfo.stage;
  49   }
  50
  51   function writeCompleteCallback() {
  52     chrome.test.assertTrue(started, "Complete triggered before being started.");
  53     chrome.test.assertEq(100, currentProgress);
  54     chrome.test.succeed("Write completed successfully.");
  55   }
  56
  57   function writeErrorCallback(message) {
  58     chrome.test.fail("An error occurred during writing.");
  59   }
  60
  61   chrome.imageWriterPrivate.onWriteProgress.
  62       addListener(writeProgressCallback);
  63   chrome.imageWriterPrivate.onWriteComplete.
  64       addListener(writeCompleteCallback);
  65   chrome.imageWriterPrivate.onWriteError.
  66       addListener(writeErrorCallback);
  67
  68   chrome.fileSystem.chooseEntry(chooseEntryCallback);
  69 }
  70
  71 testWriteFromFile();