diff -r 000000000000 -r 6474c204b198 services/common/tests/run_server.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/services/common/tests/run_server.py	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,79 @@
+#!/usr/bin/python
+
+# 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/.
+
+from argparse import ArgumentParser
+from shutil import rmtree
+from subprocess import Popen
+from sys import argv
+from sys import exit
+from tempfile import mkdtemp
+
+DEFAULT_PORT = 8080
+DEFAULT_HOSTNAME = 'localhost'
+
+def run_server(srcdir, objdir, js_file, hostname=DEFAULT_HOSTNAME,
+        port=DEFAULT_PORT):
+
+    dist_dir = '%s/dist' % objdir
+    head_dir = '%s/services/common/tests/unit' % srcdir
+
+    head_paths = [
+        'head_global.js',
+        'head_helpers.js',
+        'head_http.js',
+    ]
+
+    head_paths = ['"%s/%s"' % (head_dir, path) for path in head_paths]
+
+    args = [
+        '%s/bin/xpcshell' % dist_dir,
+        '-g', '%s/bin' % dist_dir,
+        '-a', '%s/bin' % dist_dir,
+        '-r', '%s/bin/components/httpd.manifest' % dist_dir,
+        '-m',
+        '-n',
+        '-s',
+        '-f', '%s/testing/xpcshell/head.js' % srcdir,
+        '-e', 'const _SERVER_ADDR = "%s";' % hostname,
+        '-e', 'const _TESTING_MODULES_DIR = "%s/_tests/modules";' % objdir,
+        '-e', 'const SERVER_PORT = "%s";' % port,
+        '-e', 'const INCLUDE_FILES = [%s];' % ', '.join(head_paths),
+        '-e', '_register_protocol_handlers();',
+        '-e', 'for each (let name in INCLUDE_FILES) load(name);',
+        '-e', '_fakeIdleService.activate();',
+        '-f', '%s/services/common/tests/%s' % (srcdir, js_file)
+    ]
+
+    profile_dir = mkdtemp()
+    print 'Created profile directory: %s' % profile_dir
+
+    try:
+        env = {'XPCSHELL_TEST_PROFILE_DIR': profile_dir}
+        proc = Popen(args, env=env)
+
+        return proc.wait()
+
+    finally:
+        print 'Removing profile directory %s' % profile_dir
+        rmtree(profile_dir)
+
+if __name__ == '__main__':
+    parser = ArgumentParser(description="Run a standalone JS server.")
+    parser.add_argument('srcdir',
+        help="Root directory of Firefox source code.")
+    parser.add_argument('objdir',
+        help="Root directory object directory created during build.")
+    parser.add_argument('js_file',
+        help="JS file (in this directory) to execute.")
+    parser.add_argument('--port', default=DEFAULT_PORT, type=int,
+        help="Port to run server on.")
+    parser.add_argument('--address', default=DEFAULT_HOSTNAME,
+        help="Hostname to bind server to.")
+
+    args = parser.parse_args()
+
+    exit(run_server(args.srcdir, args.objdir, args.js_file, args.address,
+        args.port))