<!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="support.js"></script> <script> var db, t = async_test(document.title, {timeout: 10000}), 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") .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>