old_contents: #!/usr/bin/env python
  # Copyright 2017 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 sys
  import unittest
  
  from . import symbolize_trace_macho_reader
  
  
  class AtosRegexTest(unittest.TestCase):
    def testRegex(self):
      if sys.platform != "darwin":
        return
      file_name = "/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit"
      result = symbolize_trace_macho_reader.ReadMachOTextLoadAddress(file_name)
      self.assertNotEqual(None, result)
  
      file_name = "/System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa"
      result = symbolize_trace_macho_reader.ReadMachOTextLoadAddress(file_name)
      self.assertNotEqual(None, result)
  
  
  if __name__ == '__main__':
    unittest.main()
  
new_contents: #!/usr/bin/env python
  # Copyright 2017 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 sys
  import unittest
  
  from . import symbolize_trace_macho_reader
  
  
  class AtosRegexTest(unittest.TestCase):
    def testRegex(self):
      if sys.platform != "darwin":
        return
      file_name = "/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit"
      # TODO(crbug.com/1275181)
      if os.path.exists(file_name):
        result = symbolize_trace_macho_reader.ReadMachOTextLoadAddress(file_name)
        self.assertNotEqual(None, result)
  
      file_name = "/System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa"
      # TODO(crbug.com/1275181)
      if os.path.exists(file_name):
        result = symbolize_trace_macho_reader.ReadMachOTextLoadAddress(file_name)
        self.assertNotEqual(None, result)
  
  
  if __name__ == '__main__':
    unittest.main()
  
subject: Work around test failure on Catapult CQ