Add an assert to ensure UTF-8 locale when handling file paths.

appengine/components/tests/endpoints_smoke_test.py

 #!/usr/bin/env python
 # Copyright 2014 The Swarming Authors. All rights reserved.
 # Use of this source code is governed by the Apache v2.0 license that can be
 # found in the LICENSE file.
 
 """Smoke test for Cloud Endpoints support in auth component.
 
 It launches app via dev_appserver and queries a bunch of cloud endpoints
 methods.
 """
 
 import unittest
 import os
+import sys
 
+THIS_DIR = os.path.dirname(os.path.abspath(__file__))
+TEST_APP_DIR = os.path.join(THIS_DIR, 'test_endpoints_app')
+CLIENT_DIR = os.path.join(
+    os.path.dirname(os.path.dirname(os.path.dirname(THIS_DIR))), 'client')
+sys.path.insert(0, CLIENT_DIR)
+
+from third_party.depot_tools import fix_encoding
 from tool_support import gae_sdk_utils
 from tool_support import local_app
 
 
-THIS_DIR = os.path.dirname(os.path.abspath(__file__))
-TEST_APP_DIR = os.path.join(THIS_DIR, 'test_endpoints_app')
-
-
 class CloudEndpointsSmokeTest(unittest.TestCase):
   def setUp(self):
     super(CloudEndpointsSmokeTest, self).setUp()
     self.app = local_app.LocalApplication(TEST_APP_DIR, 9700)
     self.app.start()
     self.app.ensure_serving()
 
   def tearDown(self):
     try:
       self.app.stop()
@@ skipping 52 matching lines @@
     self.assertTrue(token)
 
     # Verify it is usable.
     response = self.app.client.json_request(
         '/_ah/api/testing_service/v1/who', headers={'X-Host-Token-V1': token})
     self.assertEqual(200, response.http_code)
     self.assertEqual('host-name', response.body.get('host'))
 
 
 if __name__ == '__main__':
+  fix_encoding.fix_encoding()
   gae_sdk_utils.setup_gae_env()
   unittest.main()