Content - 4d0736a05f8fc27c424e7bc3b66516b0ff493e4b - 8fb5b91/IndexedDB/idbobjectstore_clear.htm

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Tip revision: 3b72a94d8d9b7297903242591e813384c9b57d8d authored by Robin Berjon on 28 March 2014, 09:56:40 UTC
don't blow up just because we wanted to remove something that didn't exist

Tip revision: 3b72a94

idbobjectstore_clear.htm

<!DOCTYPE html>
<html>
<head>
    <meta content="text/html; charset=utf-8" http-equiv="content-type" />
    <title> IDBObjectStore.clear() - Verify clear removes all records </title>
    <script type="text/javascript" src="support.js"></script>
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <script type="text/javascript">
        var objectStoreName = "objectstore";
        var record = {property:"data"};
        var db = null;
        
        var t = async_test();
        
        function RunTest() {
            var rqOpen = window.indexedDB.open(databaseName, databaseVersion);
            rqOpen.onupgradeneeded = t.step_func(function(event) {
                db = event.target.result;
                db.onerror = t.step_func(assert_database_error);
                var objStore = db.createObjectStore(objectStoreName, {autoIncrement:true});
                objStore.add(record);
                objStore.add(record);
                objStore.clear();
            });
            rqOpen.onerror = t.step_func(assert_open_request_error);
            rqOpen.onsuccess = t.step_func(VerifyRecordsHaveBeenCleared);
        }
        
        function VerifyRecordsHaveBeenCleared() {
            var txn = db.transaction(objectStoreName, "readonly");
            var objStore = txn.objectStore(objectStoreName);
            var rqCursor = objStore.openCursor();
            rqCursor.onsuccess = t.step_func(function(event) {
                assert_equals(event.target.result, null, 'event.target.result');
                t.done();
            });
        }
        
        add_completion_callback(function() { if(db) db.close(); });
        
        setup(function() {
            var rqDelete = window.indexedDB.deleteDatabase(databaseName);
            rqDelete.onsuccess = t.step_func( RunTest );
        });
    </script>
</head>
<body>
    <div id="log"></div>
</body>
</html>

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