[NaCl SDK] cleanup python unittests

native_client_sdk/src/tools/tests/oshelpers_test.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import os
-import oshelpers
 import shutil
 import subprocess
 import sys
 import tempfile
 import unittest
 import zipfile
 
+SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
+PARENT_DIR = os.path.dirname(SCRIPT_DIR)
+
+sys.path.append(PARENT_DIR)
+
+import oshelpers
 
 class RunZipError(subprocess.CalledProcessError):
   def __init__(self, retcode, command, output, error_output):
     subprocess.CalledProcessError.__init__(self, retcode, command)
     self.output = output
     self.error_output = error_output
 
   def __str__(self):
     msg = subprocess.CalledProcessError.__str__(self)
     msg += '.\nstdout: """%s"""' % (self.output,)
@@ skipping 14 matching lines @@
     raise RunZipError(retcode, command, output, error_output)
   return output, error_output
 
 
 class TestZip(unittest.TestCase):
   def setUp(self):
     # make zipname -> "testFooBar.zip"
     self.zipname = self.id().split('.')[-1] + '.zip'
     self.zipfile = None
     self.tempdir = tempfile.mkdtemp()
-    shutil.copy(os.path.join(os.path.dirname(__file__), 'oshelpers.py'),
+    shutil.copy(os.path.join(PARENT_DIR, 'oshelpers.py'),
         self.tempdir)
 
   def tearDown(self):
     if self.zipfile:
       self.zipfile.close()
     shutil.rmtree(self.tempdir)
 
   def GetTempPath(self, basename):
     return os.path.join(self.tempdir, basename)
 
@@ skipping 117 matching lines @@
     self.CloseZipFile()
 
     file3 = self.MakeFile('file3', 768)
     self.RunZip([self.zipname, file3])
     self.OpenZipFile()
     self.assertEqual(len(self.zipfile.namelist()), 3)
 
 
 if __name__ == '__main__':
   unittest.main()