Generate Android .isolate files used for test()s

build/android/pylib/gtest/gtest_test_instance.py

 # Copyright 2014 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 logging
 import os
 import re
 import tempfile
 
 from devil.android import apk_helper
 from pylib import constants
 from pylib.constants import host_paths
 from pylib.base import base_test_result
 from pylib.base import test_instance
+from pylib.utils import isolator
 
 with host_paths.SysPath(host_paths.BUILD_COMMON_PATH):
   import unittest_util # pylint: disable=import-error
 
 
 BROWSER_TEST_SUITES = [
   'components_browsertests',
   'content_browsertests',
 ]
 
@@ skipping 165 matching lines @@
         self._gtest_filter = ':'.join(l.strip() for l in f)
     else:
       self._gtest_filter = None
 
     if not args.isolate_file_path:
       default_isolate_file_path = _DEFAULT_ISOLATE_FILE_PATHS.get(self._suite)
       if default_isolate_file_path:
         args.isolate_file_path = os.path.join(
             host_paths.DIR_SOURCE_ROOT, default_isolate_file_path)
 
-    if args.isolate_file_path:
+    if (args.isolate_file_path and
+        not isolator.IsIsolateEmpty(args.isolate_file_path)):
       self._isolate_abs_path = os.path.abspath(args.isolate_file_path)
       self._isolate_delegate = isolate_delegate
       self._isolated_abs_path = os.path.join(
           constants.GetOutDirectory(), '%s.isolated' % self._suite)
     else:
       logging.warning('No isolate file provided. No data deps will be pushed.')
       self._isolate_delegate = None
 
     if args.app_data_files:
       self._app_data_files = args.app_data_files
@@ skipping 190 matching lines @@
         result_type = None
 
     return results
 
   #override
   def TearDown(self):
     """Clear the mappings created by SetUp."""
     if self._isolate_delegate:
       self._isolate_delegate.Clear()