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

client/tests/run_isolated_test.py

 #!/usr/bin/env python
 # Copyright 2013 The Swarming 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.
 
 # pylint: disable=R0201
 
 import StringIO
 import functools
 import json
 import logging
 import os
-import shutil
 import sys
 import tempfile
 import unittest
 
 ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 sys.path.insert(0, ROOT_DIR)
 sys.path.insert(0, os.path.join(ROOT_DIR, 'third_party'))
 
 import isolated_format
 import isolateserver
 import run_isolated
 from depot_tools import auto_stub
+from depot_tools import fix_encoding
 from utils import file_path
 from utils import logging_utils
 from utils import on_error
 from utils import subprocess42
 from utils import tools
 
 import isolateserver_mock
 
 
 def write_content(filepath, content):
@@ skipping 39 matching lines @@
     self.mock(
         logging_utils.OptionParserWithLogging, 'logger_root',
         logging.Logger('unittest'))
 
   def tearDown(self):
     for dirpath, dirnames, filenames in os.walk(self.tempdir, topdown=True):
       for filename in filenames:
         file_path.set_read_only(os.path.join(dirpath, filename), False)
       for dirname in dirnames:
         file_path.set_read_only(os.path.join(dirpath, dirname), False)
-    shutil.rmtree(self.tempdir)
+    file_path.rmtree(self.tempdir)
     super(RunIsolatedTestBase, self).tearDown()
 
   @property
   def run_test_temp_dir(self):
     """Where to map all files in run_isolated.run_tha_test."""
     return os.path.join(self.tempdir, 'isolated_run')
 
   def fake_make_temp_dir(self, prefix, _root_dir=None):
     """Predictably returns directory for run_tha_test (one per test case)."""
     self.assertIn(prefix, ('isolated_out', 'isolated_run', 'isolated_tmp'))
@@ skipping 374 matching lines @@
         u'isolated': u'e0a0fffa0910dd09e7ef4c89496116f60317e6c4',
         u'isolatedserver': u'http://localhost:1',
         u'namespace': u'default-gzip',
       },
       u'version': 2,
     }
     self.assertEqual(expected, tools.read_json(out))
 
 
 if __name__ == '__main__':
+  fix_encoding.fix_encoding()
   logging.basicConfig(
       level=logging.DEBUG if '-v' in sys.argv else logging.ERROR)
   unittest.main()