third_party/WebKit/LayoutTests/storage/indexeddb/resources/database-wrapper.js

   1 if (this.importScripts) {
   2     importScripts('../../../resources/js-test.js');
   3     importScripts('shared.js');
   4 }
   5
   6 description("Ensure IDBDatabase wrapper isn't prematurely collected.");
   7
   8 test();
   9
  10 function test()
  11 {
  12     setDBNameFromPath();
  13     var deleteRequest = evalAndLog("indexedDB.deleteDatabase(dbname)");
  14     deleteRequest.onblocked = unexpectedBlockedCallback;
  15     deleteRequest.onerror = unexpectedErrorCallback;
  16     deleteRequest.onsuccess = openDB;
  17 }
  18
  19 function openDB()
  20 {
  21     preamble();
  22
  23     var openRequest = evalAndLog("indexedDB.open(dbname, 1)");
  24     openRequest.onblocked = unexpectedBlockedCallback;
  25     openRequest.onerror = unexpectedErrorCallback;
  26     openRequest.onupgradeneeded = onUpgradeNeeded;
  27     openRequest.onsuccess = openSuccess;
  28 }
  29
  30 function onUpgradeNeeded(evt) {
  31     preamble(evt);
  32     evalAndLog("db = event.target.result");
  33     evalAndLog("db.createObjectStore('store').createIndex('index', 'keyPath')");
  34     evalAndLog("db = null");
  35 }
  36
  37 function openSuccess(evt)
  38 {
  39     preamble(evt);
  40     var db = event.target.result;
  41     db.onversionchange = onVersionChange;
  42     evalAndLog("sawVersionChangeEvent = false");
  43
  44     // All these local references should get collected, but the database's
  45     // wrapper shouldn't get collected before the database itself.
  46     var transaction = db.transaction('store', 'readonly');
  47     var objectStore = transaction.objectStore('store');
  48     var request = objectStore.get(0);
  49     request.onsuccess = function() {
  50         setTimeout(collectGarbage, 0);
  51     };
  52 }
  53
  54 function onVersionChange(evt)
  55 {
  56     preamble(evt);
  57     evalAndLog("event.target.close()");
  58     evalAndLog("sawVersionChangeEvent = true");
  59 }
  60
  61 function collectGarbage()
  62 {
  63     preamble();
  64     evalAndLog("self.gc()");
  65
  66     setTimeout(openAgain, 0);
  67 }
  68
  69 function openAgain()
  70 {
  71     preamble();
  72
  73     var openRequest = evalAndLog("indexedDB.open(dbname, 2)");
  74     openRequest.onblocked = unexpectedBlockedCallback;
  75     openRequest.onerror = unexpectedErrorCallback;
  76     openRequest.onsuccess = openAgainSuccess;
  77 }
  78
  79 function openAgainSuccess(evt)
  80 {
  81     preamble(evt);
  82     shouldBeTrue("sawVersionChangeEvent");
  83     finishJSTest();
  84 }