1 files changed, 35 insertions, 0 deletions
diff --git a/storage/test/unit/test_connection_failsafe_close.js b/storage/test/unit/test_connection_failsafe_close.js
new file mode 100644
index 0000000000..d4fa6d1503
--- /dev/null
+++ b/storage/test/unit/test_connection_failsafe_close.js
@@ -0,0 +1,35 @@
+/* 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");
+});