third_party/WebKit/LayoutTests/storage/indexeddb/transaction-ordering.html

   1 <!DOCTYPE html>
   2 <script src="../../resources/js-test.js"></script>
   3 <script src="resources/shared.js"></script>
   4 <script>
   5
   6 description("Verify Indexed DB transactions are ordered per spec");
   7
   8 indexedDBTest(prepareDatabase, onOpen);
   9
  10 function prepareDatabase(evt)
  11 {
  12     preamble(evt);
  13     evalAndLog("db = event.target.result");
  14     evalAndLog("store = db.createObjectStore('store')");
  15 }
  16
  17 function onOpen(evt)
  18 {
  19     preamble(evt);
  20     evalAndLog("db = event.target.result");
  21     debug("");
  22     debug("Create in order tx1, tx2");
  23     evalAndLog("tx1 = db.transaction('store', 'readwrite')");
  24     evalAndLog("tx2 = db.transaction('store', 'readwrite')");
  25     debug("");
  26     debug("Use in order tx2, tx1");
  27     evalAndLog("tx2.objectStore('store').get(0)");
  28     evalAndLog("tx1.objectStore('store').get(0)");
  29     debug("");
  30     evalAndLog("order = []");
  31
  32     tx1.oncomplete = function(evt) {
  33         debug("tx1 complete");
  34         order.push(1);
  35         if (order.length === 2) done();
  36     };
  37
  38     tx2.oncomplete = function(evt) {
  39         debug("tx1 complete");
  40         order.push(2);
  41         if (order.length === 2) done();
  42     };
  43
  44     function done() {
  45         preamble();
  46         // IndexedDB Spec:
  47         // https://dvcs.w3.org/hg/IndexedDB/raw-file/tip/Overview.html#transaction-concept
  48         //
  49         // If multiple "readwrite" transactions are attempting to
  50         // access the same object store (i.e. if they have overlapping
  51         // scope), the transaction that was created first must be the
  52         // transaction which gets access to the object store first.
  53         //
  54         shouldBeTrue("areArraysEqual(order, [ 1, 2 ])");
  55         finishJSTest();
  56     }
  57 }
  58
  59
  60 </script>