third_party/web_platform_tests/IndexedDB/idbobjectstore_delete6.htm

<!DOCTYPE html>
<meta charset="utf-8">
<title>IDBObjectStore.delete() - If the transaction this IDBObjectStore belongs to has its mode set to readonly, throw ReadOnlyError</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-IDBObjectStore-delete-IDBRequest-any-key">
<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");
        var ostore = txn.objectStore("store");
        t.step(function(){
            assert_throws("ReadOnlyError", function(){
                ostore.delete("primaryKey_0");
            });
        });
        t.done();
    }
</script>