gecko-dev/storage/test/unit/test_connection_failsafe_cl...

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JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* This file tests edge-cases related to mozStorageService::unregisterConnection
* in the face of failsafe closing at destruction time which results in
* SpinningSynchronousClose being invoked which can "resurrect" the connection
* and result in a second call to unregisterConnection.
*
* See https://bugzilla.mozilla.org/show_bug.cgi?id=1413501 for more context.
*/
add_task(async function test_failsafe_close_of_async_connection() {
// get the db
let db = getOpenedDatabase();
// do something async
let callbackInvoked = new Promise(resolve => {
db.executeSimpleSQLAsync("CREATE TABLE test (id INTEGER)", {
handleCompletion: resolve,
});
});
// drop our reference and force a GC so the only live reference is owned by
// the async statement.
db = gDBConn = null;
// (we don't need to cycle collect)
Cu.forceGC();
// now we need to wait for that callback to have completed.
await callbackInvoked;
Assert.ok(true, "if we shutdown cleanly and do not crash, then we succeeded");
});