old_contents: import os.path
  import unittest
  
  POSSIBLE_TEST_BINARIES = [
      'libreadline.so.5',
      'libreadline.so.6',
  ]
  
  POSSIBLE_TEST_BINARY_PATHS = [
      '/lib',
      '/usr/lib',
      '/usr/local/lib',
  ]
  
  class TestBase(unittest.TestCase):
      def get_test_binary(self):
          """Helper to obtain a test binary for object file testing.
  
          FIXME Support additional, highly-likely targets or create one
          ourselves.
          """
          for d in POSSIBLE_TEST_BINARY_PATHS:
              for lib in POSSIBLE_TEST_BINARIES:
                  path = os.path.join(d, lib)
  
                  if os.path.exists(path):
                      return path
  
          raise Exception('No suitable test binaries available!')
      get_test_binary.__test__ = False
  
new_contents: import os.path
  import unittest
  
  POSSIBLE_TEST_BINARIES = [
      'libreadline.so.5',
      'libreadline.so.6',
  ]
  
  POSSIBLE_TEST_BINARY_PATHS = [
      '/usr/lib/debug',
      '/lib',
      '/usr/lib',
      '/usr/local/lib',
      '/lib/i386-linux-gnu',
  ]
  
  class TestBase(unittest.TestCase):
      def get_test_binary(self):
          """Helper to obtain a test binary for object file testing.
  
          FIXME Support additional, highly-likely targets or create one
          ourselves.
          """
          for d in POSSIBLE_TEST_BINARY_PATHS:
              for lib in POSSIBLE_TEST_BINARIES:
                  path = os.path.join(d, lib)
  
                  if os.path.exists(path):
                      return path
  
          raise Exception('No suitable test binaries available!')
      get_test_binary.__test__ = False
  
subject: Add some paths where to find test binary