content/test/data/indexeddb/delete_compact.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4 <!--
   5   Copyright 2013 The Chromium Authors. All rights reserved.
   6   Use of this source code is governed by a BSD-style license that can be
   7   found in the LICENSE file.
   8 -->
   9 <title>IDB test that database deletion triggers a compaction</title>
  10 <script type="text/javascript" src="common.js"></script>
  11 <script>
  12
  13 var dbname = 'delete_compact';
  14
  15 // Follow navigation requests from the browser test.
  16 window.onhashchange = test;
  17
  18 function test()
  19 {
  20   if (location.hash === '#fill')
  21     fill();
  22   else if (location.hash === '#purge')
  23     purge();
  24   else if (location.hash !== '#pass' && location.hash !== '#fail')
  25     fail('unexpected hash');
  26 }
  27
  28 function fill()
  29 {
  30   var bytes = 0;
  31   var request = indexedDB.open(dbname);
  32   request.onupgradeneeded = function() {
  33     var db = request.result;
  34     var store = db.createObjectStore('store');
  35     var kilobyte = Array(512+1).join('\u0100'); // 2 bytes in UTF-8 or UTF-16.
  36     var megabyte = Array(1024+1).join(kilobyte);
  37     for (var i = 0; i < 5; ++i) {
  38       store.put(megabyte, i);
  39       bytes += 1024 * 1024;
  40     }
  41   };
  42   request.onsuccess = function() {
  43     var db = request.result;
  44     db.close();
  45     done('filled with ' + bytes + ' bytes');
  46   };
  47 }
  48
  49 function purge()
  50 {
  51   var request = indexedDB.deleteDatabase(dbname);
  52   request.onsuccess = function() {
  53     done('purged');
  54   };
  55 }
  56
  57 </script>
  58 </head>
  59 <body onload="test()">
  60 <div id="status">Starting...</div>
  61 </body>
  62 </html>