third_party/WebKit/LayoutTests/storage/indexeddb/resources/deletedatabase-delayed-by-open-and-versionchange.js

   1 if (this.importScripts) {
   2     importScripts('../../../resources/js-test.js');
   3     importScripts('shared.js');
   4 }
   5
   6 description("Test that deleteDatabase is delayed if a VERSION_CHANGE transaction is running");
   7
   8 indexedDBTest(prepareDatabase, onOpenSuccess);
   9 function prepareDatabase(evt)
  10 {
  11     preamble(evt);
  12     evalAndLog("sawVersionChange = false");
  13     evalAndLog("upgradeTransactionComplete = false");
  14     evalAndLog("h = event.target.result");
  15
  16     h.onversionchange = function onVersionChange(evt) {
  17         preamble(evt);
  18         shouldBe("event.target.version", "1");
  19         shouldBe("event.oldVersion", "1");
  20         shouldBeNull("event.newVersion");
  21         evalAndLog("sawVersionChange = true");
  22         debug("Connection is not closed, so 'blocked' should fire");
  23     };
  24
  25     transaction = event.target.transaction;
  26     transaction.oncomplete = function transactionOnComplete(evt) {
  27         preamble(evt);
  28         evalAndLog("upgradeTransactionComplete = true");
  29     };
  30
  31     request = evalAndLog("indexedDB.deleteDatabase(dbname)");
  32     request.onerror = unexpectedErrorCallback;
  33     request.onblocked = function deleteDatabaseOnBlocked(evt) {
  34         preamble(evt);
  35         shouldBeTrue("sawVersionChange");
  36     };
  37     request.onsuccess = function deleteDatabaseOnSuccess(evt) {
  38         preamble(evt);
  39         shouldBeTrue("upgradeTransactionComplete");
  40         finishJSTest();
  41     };
  42 }
  43
  44 function onOpenSuccess(evt)
  45 {
  46     preamble(evt);
  47     evalAndLog("h = event.target.result");
  48     evalAndLog("h.close()");
  49     debug("Closing too late to prevent the in-flight 'blocked' event");
  50     // Event ordering between 'success' and 'blocked' is not strictly defined
  51     // in the spec. This documents current Chromium behavior to detect
  52     // unexpected changes.
  53 }