Content - 32478c141eaee5d6a86e7ba52084015b8de0c193 - c428a7b/IndexedDB/idbcursor_advance_objectstore2.htm

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Tip revision: b6d437037393dc8b289bfb3504fc21a808760be3 authored by Michael[tm] Smith on 23 March 2018, 10:42:57 UTC
cc Update messages.json

Tip revision: b6d4370

idbcursor_advance_objectstore2.htm

<!DOCTYPE html>
<meta charset="utf-8">
<title>IDBCursor.advance() - object store - throw TypeError</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);

            assert_throws(new TypeError(), function() {
                cursor.advance(0);
            }, "Calling advance() with count argument 0 should throw TypeError.");

            t.done();
        });
    }
</script>

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