diff -r 000000000000 -r 6474c204b198 toolkit/components/search/tests/xpcshell/test_nodb.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/search/tests/xpcshell/test_nodb.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,37 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/*
+ * test_nodb: Start search engine
+ * - without search-metadata.json
+ * - without search.sqlite
+ *
+ * Ensure that :
+ * - nothing explodes;
+ * - no search-metadata.json is created.
+ */
+
+
+function run_test()
+{
+  removeMetadata();
+  updateAppInfo();
+
+  let search = Services.search;
+
+  do_test_pending();
+  search.init(function ss_initialized(rv) {
+    do_check_true(Components.isSuccessCode(rv));
+    do_timeout(500, function() {
+      // Check that search-metadata.json has not been
+      // created. Note that we cannot do much better
+      // than a timeout for checking a non-event.
+      let metadata = gProfD.clone();
+      metadata.append("search-metadata.json");
+      do_check_true(!metadata.exists());
+      removeMetadata();
+
+      do_test_finished();
+    });
+  });
+}