content/test/data/indexeddb/blob_did_ack.html

   1 <!DOCTYPE html>
   2 <html>
   3 <!--
   4   Copyright 2015 The Chromium Authors. All rights reserved.
   5   Use of this source code is governed by a BSD-style license that can be
   6   found in the LICENSE file.
   7 -->
   8 <head>
   9 <title>IDB Test that reading a blob from the database does send an ack back to browser process</title>
  10 <script src="common.js"></script>
  11 <script>
  12
  13 // Constants.
  14 var store_name = 'blobs_ack';
  15 var blob_key = 'blob_key';
  16 var blob_size = 200;
  17
  18 // Shared variables.
  19 var db;
  20 var put_blob;
  21
  22 function test() {
  23   indexedDBTest(prepareDatabase, putBlob);
  24 }
  25
  26 function prepareDatabase() {
  27   db = event.target.result;
  28   db.createObjectStore(store_name);
  29 }
  30
  31 function putBlob() {
  32   debug("Writing blob.");
  33
  34   var trans = db.transaction(store_name, 'readwrite');
  35   trans.onabort = unexpectedAbortCallback;
  36   trans.oncomplete = getBlob;
  37
  38   var data = new Array(1 + blob_size).join("X");
  39   put_blob = new Blob([data]);
  40   var request = trans.objectStore(store_name).put(put_blob, blob_key);
  41   request.onerror = unexpectedErrorCallback;
  42 }
  43
  44 function getBlob() {
  45   debug("Deleting blob.");
  46   put_blob = undefined; // So that the blob can be GC'd
  47   var trans = db.transaction(store_name, 'readonly');
  48   trans.onabort = unexpectedAbortCallback;
  49   trans.oncomplete = onGetComplete;
  50
  51   var request = trans.objectStore(store_name).get(blob_key);
  52   request.onerror = unexpectedErrorCallback;
  53 }
  54
  55 function onGetComplete() {
  56   gc();
  57   done();
  58 }
  59
  60 </script>
  61 </head>
  62 <body onLoad="test()">
  63   <div id="status">Starting...<br>
  64     <p>Run this test with --js-flags=--expose-gc when run from Chrome.</p>
  65   </div>
  66 </body>
  67 </html>