third_party/web_platform_tests/IndexedDB/idbobjectstore_clear2.htm

<!DOCTYPE html>
<meta charset="utf-8">
<title>IDBObjectStore.clear() - clear removes all records from an index </title>
<link rel="author" title="Microsoft" href="http://www.microsoft.com">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support.js"></script>

<script>
    var db,
      t = async_test();

    var open_rq = createdb(t);
    open_rq.onupgradeneeded = function(e) {
        db = e.target.result;
        var objStore = db.createObjectStore("store", { autoIncrement: true });
        objStore.createIndex("index", "indexedProperty");

        objStore.add({ indexedProperty: "data" });
        objStore.add({ indexedProperty: "yo, man", something_different: "Yup, totally different" });
        objStore.add({ indexedProperty: 1234 });
        objStore.add({ indexedProperty: [1, 2, 1234] });
        objStore.add(1234);

        objStore.clear().onsuccess = t.step_func(function(e) {
            assert_equals(e.target.result, undefined);
        });
    };

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

        rq.onsuccess = t.step_func(function(e) {
            assert_equals(e.target.result, null, 'cursor');
            t.done();
        });
    };
</script>

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