src/third_party/WebKit/LayoutTests/imported/web-platform-tests/IndexedDB/keygenerator-overflow.htm

   1 <!DOCTYPE html>
   2 <meta charset="utf-8">
   3 <title>Keygenerator overflow</title>
   4 <link rel="author" href="mailto:odinho@opera.com" title="Odin Hørthe Omdal">
   5 <link rel=help href="http://dvcs.w3.org/hg/IndexedDB/raw-file/tip/Overview.html#key-generator-concept">
   6 <link rel=assert title="When the current number of a key generator reaches above the value 2^53 (9007199254740992) any attempts to use the key generator to generate a new key will result in an error. It's still possible to insert records into the object store by specifying an explicit key, however the only way to use a key generator again for the object store is to delete the object store and create a new one.">
   7 <script src="../../../resources/testharness.js"></script>
   8 <script src="../../../resources/testharnessreport.js"></script>
   9 <script src="support.js"></script>
  10
  11 <script>
  12
  13     var db,
  14       t = async_test(document.title, {timeout: 10000}),
  15       overflow_error_fired = false,
  16       objects =  [9007199254740991, null, "error", 2, "error" ],
  17       expected_keys = [2, 9007199254740991, 9007199254740992];
  18
  19     var open_rq = createdb(t);
  20     open_rq.onupgradeneeded = function(e) {
  21         db = e.target.result;
  22         var objStore = db.createObjectStore("store", { keyPath: "id", autoIncrement: true });
  23
  24         for (var i = 0; i < objects.length; i++)
  25         {
  26             if (objects[i] === null)
  27             {
  28                 objStore.add({});
  29             }
  30             else if (objects[i] === "error")
  31             {
  32                 var rq = objStore.add({});
  33                 rq.onsuccess = fail(t, 'When "current number" overflows, error event is expected');
  34                 rq.onerror = t.step_func(function(e) {
  35                     overflow_error_fired = true;
  36                     assert_equals(e.target.error.name, "ConstraintError", "error name");
  37                     e.preventDefault();
  38                     e.stopPropagation();
  39                 });
  40             }
  41             else
  42                 objStore.add({ id: objects[i] });
  43         }
  44     };
  45
  46     open_rq.onsuccess = function(e) {
  47         var actual_keys = [],
  48           rq = db.transaction("store")
  49                  .objectStore("store")
  50                  .openCursor();
  51
  52         rq.onsuccess = t.step_func(function(e) {
  53             var cursor = e.target.result;
  54
  55             if (cursor) {
  56                 actual_keys.push(cursor.key.valueOf());
  57                 cursor.continue();
  58             }
  59             else {
  60                 assert_true(overflow_error_fired, "error fired on 'current number' overflow");
  61                 assert_object_equals(actual_keys, expected_keys, "keygenerator array");
  62
  63                 t.done();
  64             }
  65         });
  66     };
  67
  68 </script>
  69
  70 <div id="log"></div>