Modify au_test_harness and ctest to work from new location.

au_test_harness/au_test.py

 # Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Module containing a test suite that is run to test auto updates."""
 
 import os
 import tempfile
 import time
 import unittest
@@ skipping 98 matching lines @@
 
   # --- UNITTEST SPECIFIC METHODS ---
 
   def setUp(self):
     """Overrides unittest.TestCase.setUp and called before every test.
 
     Sets instance specific variables and initializes worker.
     """
     unittest.TestCase.setUp(self)
     self.worker = self.worker_class(self.options, AUTest.test_results_root)
-    self.crosutils = os.path.join(os.path.dirname(__file__), '..', '..')
-    self.download_folder = os.path.join(self.crosutils, 'latest_download')
+    self.download_folder = os.path.join(os.path.realpath(os.path.curdir),
+                                        'latest_download')
     if not os.path.exists(self.download_folder):
       os.makedirs(self.download_folder)
 
   def tearDown(self):
     """Overrides unittest.TestCase.tearDown and called after every test."""
     self.worker.CleanUp()
 
   def testUpdateKeepStateful(self):
     """Tests if we can update normally.
 
@@ skipping 148 matching lines @@
     url = 'http://gsdview.appspot.com/chromeos-localmirror/' \
           'autest-images/corrupted_image.gz'
     payload = os.path.join(self.download_folder, 'corrupted.gz')
 
     # Read from the URL and write to the local file
     urllib.urlretrieve(url, payload)
 
     # This update is expected to fail...
     expected_msg = 'zlib inflate() error:-3'
     self.AttemptUpdateWithPayloadExpectedFailure(payload, expected_msg)