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<!DOCTYPE html>
<meta charset="utf-8">
<title>IDBCursor.advance() - object store - throw InvalidStateError</title>
<link rel="author" title="Intel" href="http://www.intel.com">
<link rel="help" href="https://dvcs.w3.org/hg/IndexedDB/raw-file/tip/Overview.html#widl-IDBCursor-advance-void-unsigned-long-count">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support.js"></script>
<div id="log"></div>
<script>
var db,
t = async_test(),
records = [{ pKey: "primaryKey_0"},
{ pKey: "primaryKey_1"}];
var open_rq = createdb(t);
open_rq.onupgradeneeded = function (event) {
db = event.target.result;
var objStore = db.createObjectStore("store", {keyPath:"pKey"});
for (var i = 0; i < records.length; i++) {
objStore.add(records[i]);
}
}
open_rq.onsuccess = function (event) {
var txn = db.transaction("store", "readwrite");
var rq = txn.objectStore("store").openCursor();
rq.onsuccess = t.step_func(function(event) {
var cursor = event.target.result;
assert_true(cursor instanceof IDBCursor);
cursor.advance(1);
assert_throws_dom("InvalidStateError", function() {
cursor.advance(1);
}, "Calling advance() should throw DOMException when the cursor is currently being iterated.");
t.done();
});
}
</script>
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