luci-py: Making __file__ usage unicode safe.

client/tests/net_utils.py

 # Copyright 2014 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 import logging
 import os
 import sys
 import threading
 
-TEST_DIR = os.path.dirname(os.path.abspath(__file__))
+TEST_DIR = os.path.dirname(os.path.abspath(
+    __file__.decode(sys.getfilesystemencoding())))
 ROOT_DIR = os.path.dirname(TEST_DIR)
 sys.path.insert(0, ROOT_DIR)
 sys.path.insert(0, os.path.join(ROOT_DIR, 'third_party'))
 
 from depot_tools import auto_stub
 from utils import net
 
 
 def make_fake_response(content, url, headers=None):
   """Returns HttpResponse with predefined content, useful in tests."""
@@ skipping 85 matching lines @@
             self.fail('Expected json request, got normal data; %s' % url)
           _, expected_kwargs, result = data
           if callable(expected_kwargs):
             expected_kwargs(kwargs)
           else:
             self.assertEqual(expected_kwargs, kwargs)
           if result is not None:
             return result
           return None
     self.fail('Unknown request %s %s' % (url, kwargs))