idbcursor_advance_index3.htm

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This WPT test may be referenced by the following Test IDs:
- /IndexedDB/idbcursor_advance_index3.htm - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>IDBCursor.advance() - index - attempt to advance backwards</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 value passed into the count parameter was zero or a negative number.">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="resources/support.js"></script>

<script type="text/javascript">

    var db,

      t = async_test(),

      records = [ { pKey: "primaryKey_0", iKey: "indexKey_0" },

                  { pKey: "primaryKey_1", 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", "readonly", {durability: 'relaxed'})

                          .objectStore("test")

                          .index("index")

                          .openCursor(undefined, "next");

        cursor_rq.onsuccess = t.step_func(function(e) {

            var cursor = e.target.result;

            assert_true(cursor != null, "cursor exist");

            assert_throws_js(TypeError,

                function() { cursor.advance(-1); });

            t.done();

});

};

</script>

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