<!DOCTYPE html>
<title>IDBCursor.advance() - index - iterate to the next record</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#widl-IDBCursor-advance-void-unsigned-long-count">
<link rel=assert title="The operation runs the steps for iterating a cursor count number of times with null as key and this cursor as cursor.">
<link rel=assert title="The number of advances forward the cursor should make.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support.js"></script>

<script>
    var db,
      count = 0,
      t = async_test(),
      records = [ { pKey: "primaryKey_0",   iKey: "indexKey_0" },
                  { pKey: "primaryKey_1",   iKey: "indexKey_1" },
                  { pKey: "primaryKey_1-2", iKey: "indexKey_1" } ],
      expected = [ { pKey: "primaryKey_0",   iKey: "indexKey_0" },
                   { pKey: "primaryKey_1-2", iKey: "indexKey_1" } ];

    var open_rq = createdb(t);
    open_rq.onupgradeneeded = function(e) {
        db = e.target.result
        var objStore = db.createObjectStore("test", { keyPath:"pKey" })

        objStore.createIndex("index", "iKey")

        for (var i = 0; i < records.length; i++)
            objStore.add(records[i])
    };

    open_rq.onsuccess = function(e) {
        var cursor_rq = db.transaction("test")
                          .objectStore("test")
                          .index("index")
                          .openCursor();

        cursor_rq.onsuccess = t.step_func(function(e) {
            var cursor = e.target.result;
            if (!cursor) {
                assert_equals(count, expected.length, "cursor run count")
                t.done()
            }

            var record = cursor.value;
            assert_equals(record.pKey, expected[count].pKey, "primary key");
            assert_equals(record.iKey, expected[count].iKey, "index key");

            cursor.advance(2);
            count++;
        });
    };
</script>

<div id="log"></div>