content/test/data/fileapi/quota_test.js

   1 // Copyright (c) 2011 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 truncateFailByQuota(fs) {
   6   fs.root.getFile('fd', {create: false, exclusive: false}, function(fileEntry) {
   7     fileEntry.createWriter(function(fileWriter) {
   8       var failedInTruncate = false;
   9       fileWriter.onerror = function(e) {
  10         failedInTruncate = true;
  11       };
  12       fileWriter.onwriteend = function(e) {
  13         if (failedInTruncate) {
  14           fail(e.currentTarget.error);
  15         } else {
  16           done();
  17         }
  18       };
  19       fileWriter.truncate(2500 * 1024);
  20     }, unexpectedErrorCallback)
  21   }, function(e) { fail('Open for 2nd truncate:' + fileErrorToString(e)); } );
  22 }
  23
  24 function requestFileSystemSuccess(fs) {
  25   fs.root.getFile('fd', {create: true, exclusive: false}, function(fileEntry) {
  26     fileEntry.createWriter(function(fileWriter) {
  27       var failedInTruncate = false;
  28       fileWriter.onerror = function(e) {
  29         debug(e.currentTarget.error);
  30         failedInTruncate = true;
  31       };
  32       fileWriter.onwriteend = function() {
  33         if (failedInTruncate) {
  34           truncateFailByQuota(fs);
  35         } else {
  36           fail('Unexpectedly succeeded to truncate.  It should fail by quota.');
  37         }
  38       };
  39       fileWriter.truncate(10000 * 1024);
  40     }, unexpectedErrorCallback)
  41   }, function(e) { fail('Open for 1st truncate:' + fileErrorToString(e)); } );
  42 }
  43
  44 function quotaSuccess(usage, quota) {
  45   if (usage != 0)
  46     fail('Usage is not zero: ' + usage);
  47   if (quota != 5000 * 1024)
  48     fail('Quota is not 5000KiB: ' + quota);
  49
  50   window.webkitRequestFileSystem(
  51       window.TEMPORARY,
  52       1024 * 1024,
  53       requestFileSystemSuccess,
  54       unexpectedErrorCallback);
  55 }
  56
  57 function test() {
  58   if (window.webkitStorageInfo) {
  59     debug('Querying usage and quota.');
  60     webkitStorageInfo.queryUsageAndQuota(webkitStorageInfo.TEMPORARY,
  61                                          quotaSuccess,
  62                                          unexpectedErrorCallback);
  63   } else {
  64     debug('This test requires window.webkitStorageInfo.');
  65   }
  66 }