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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>
|
