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+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Keygenerator overflow</title>
+<link rel="author" href="mailto:odinho@opera.com" title="Odin Hørthe Omdal">
+<link rel=help href="http://dvcs.w3.org/hg/IndexedDB/raw-file/tip/Overview.html#key-generator-concept">
+<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.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/support.js"></script>
+
+<script>
+
+ var db,
+ t = async_test(),
+ overflow_error_fired = false,
+ objects = [9007199254740991, null, "error", 2, "error" ],
+ expected_keys = [2, 9007199254740991, 9007199254740992];
+
+ var open_rq = createdb(t);
+ open_rq.onupgradeneeded = function(e) {
+ db = e.target.result;
+ var objStore = db.createObjectStore("store", { keyPath: "id", autoIncrement: true });
+
+ for (var i = 0; i < objects.length; i++)
+ {
+ if (objects[i] === null)
+ {
+ objStore.add({});
+ }
+ else if (objects[i] === "error")
+ {
+ var rq = objStore.add({});
+ rq.onsuccess = fail(t, 'When "current number" overflows, error event is expected');
+ rq.onerror = t.step_func(function(e) {
+ overflow_error_fired = true;
+ assert_equals(e.target.error.name, "ConstraintError", "error name");
+ e.preventDefault();
+ e.stopPropagation();
+ });
+ }
+ else
+ objStore.add({ id: objects[i] });
+ }
+ };
+
+ open_rq.onsuccess = function(e) {
+ var actual_keys = [],
+ rq = db.transaction("store", "readonly", {durability: 'relaxed'})
+ .objectStore("store")
+ .openCursor();
+
+ rq.onsuccess = t.step_func(function(e) {
+ var cursor = e.target.result;
+
+ if (cursor) {
+ actual_keys.push(cursor.key.valueOf());
+ cursor.continue();
+ }
+ else {
+ assert_true(overflow_error_fired, "error fired on 'current number' overflow");
+ assert_array_equals(actual_keys, expected_keys, "keygenerator array");
+
+ t.done();
+ }
+ });
+ };
+
+</script>
+
+<div id="log"></div>