Override the user's language settings during tests

test/lib/TestGyp.py

 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """
 TestGyp.py:  a testing framework for GYP integration tests.
 """
 
 import collections
 from contextlib import contextmanager
@@ skipping 133 matching lines @@
     self.copy_test_configuration(self.origin_cwd, self.workdir)
     self.set_configuration(None)
 
     # Set $HOME so that gyp doesn't read the user's actual
     # ~/.gyp/include.gypi file, which may contain variables
     # and other settings that would change the output.
     os.environ['HOME'] = self.workpath()
     # Clear $GYP_DEFINES for the same reason.
     if 'GYP_DEFINES' in os.environ:
       del os.environ['GYP_DEFINES']
+    # Override the user's language settings, which could
+    # otherwise make the output vary from what is expected.
+    os.environ['LC_ALL'] = 'C'
 
   def built_file_must_exist(self, name, type=None, **kw):
     """
     Fails the test if the specified built file name does not exist.
     """
     return self.must_exist(self.built_file_path(name, type, **kw))
 
   def built_file_must_not_exist(self, name, type=None, **kw):
     """
     Fails the test if the specified built file name exists.
@@ skipping 1056 matching lines @@
 
 def TestGyp(*args, **kw):
   """
   Returns an appropriate TestGyp* instance for a specified GYP format.
   """
   format = kw.pop('format', os.environ.get('TESTGYP_FORMAT'))
   for format_class in format_class_list:
     if format == format_class.format:
       return format_class(*args, **kw)
   raise Exception, "unknown format %r" % format