diff -r 000000000000 -r 6474c204b198 storage/test/unit/test_storage_service_unshared.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/storage/test/unit/test_storage_service_unshared.js	Wed Dec 31 06:09:35 2014 +0100
@@ -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 the openUnsharedDatabase function of mozIStorageService.
+
+function test_openUnsharedDatabase_file_DNE()
+{
+  // the file should be created after calling
+  var db = getTestDB();
+  do_check_false(db.exists());
+  getService().openUnsharedDatabase(db);
+  do_check_true(db.exists());
+}
+
+function test_openUnsharedDatabase_file_exists()
+{
+  // it should already exist from our last test
+  var db = getTestDB();
+  do_check_true(db.exists());
+  getService().openUnsharedDatabase(db);
+  do_check_true(db.exists());
+}
+
+var tests = [test_openUnsharedDatabase_file_DNE,
+             test_openUnsharedDatabase_file_exists];
+
+function run_test()
+{
+  for (var i = 0; i < tests.length; i++)
+    tests[i]();
+    
+  cleanup();
+}
+