old_contents: import unittest
  from test import test_support
  import platform
  
  class PlatformTest(unittest.TestCase):
      def test_architecture(self):
          res = platform.architecture()
  
      def test_machine(self):
          res = platform.machine()
  
      def test_node(self):
          res = platform.node()
  
      def test_platform(self):
          for aliased in (False, True):
              for terse in (False, True):
                  res = platform.platform(aliased, terse)
  
      def test_processor(self):
          res = platform.processor()
  
      def test_python_build(self):
          res = platform.python_build()
  
      def test_python_compiler(self):
          res = platform.python_compiler()
  
      def test_version(self):
          res1 = platform.version()
          res2 = platform.version_tuple()
          self.assertEqual(res1, ".".join(res2))
  
      def test_release(self):
          res = platform.release()
  
      def test_system(self):
          res = platform.system()
  
      def test_version(self):
          res = platform.version()
  
      def test_system_alias(self):
          res = platform.system_alias(
              platform.system(),
              platform.release(),
              platform.version(),
          )
  
      def test_uname(self):
          res = platform.uname()
  
      def test_java_ver(self):
          res = platform.java_ver()
  
      def test_win32_ver(self):
          res = platform.win32_ver()
  
      def test_mac_ver(self):
          res = platform.mac_ver()
  
      def test_dist(self):
          res = platform.dist()
  
      def test_libc_ver(self):
          res = platform.libc_ver()
  
  def test_main():
      test_support.run_unittest(
          PlatformTest
      )
  
  if __name__ == '__main__':
      test_main()
  
new_contents: import unittest
  from test import test_support
  import platform
  
  class PlatformTest(unittest.TestCase):
      def test_architecture(self):
          res = platform.architecture()
  
      def test_machine(self):
          res = platform.machine()
  
      def test_node(self):
          res = platform.node()
  
      def test_platform(self):
          for aliased in (False, True):
              for terse in (False, True):
                  res = platform.platform(aliased, terse)
  
      def test_processor(self):
          res = platform.processor()
  
      def test_python_build(self):
          res = platform.python_build()
  
      def test_python_compiler(self):
          res = platform.python_compiler()
  
      def test_version(self):
          res1 = platform.version()
          res2 = platform.version_tuple()
          self.assertEqual(res1, ".".join(res2))
  
      def test_release(self):
          res = platform.release()
  
      def test_system(self):
          res = platform.system()
  
      def test_version(self):
          res = platform.version()
  
      def test_system_alias(self):
          res = platform.system_alias(
              platform.system(),
              platform.release(),
              platform.version(),
          )
  
      def test_uname(self):
          res = platform.uname()
  
      def test_java_ver(self):
          res = platform.java_ver()
  
      def test_win32_ver(self):
          res = platform.win32_ver()
  
      def test_mac_ver(self):
          res = platform.mac_ver()
  
      def test_dist(self):
          res = platform.dist()
  
      def test_libc_ver(self):
          from sys import executable
          import os
          if os.path.isdir(executable) and os.path.exists(executable+'.exe'):
              # Cygwin horror
              executable = executable + '.exe'
          res = platform.libc_ver(executable)
  
  def test_main():
      test_support.run_unittest(
          PlatformTest
      )
  
  if __name__ == '__main__':
      test_main()
  
subject: Fix test_platform on cygwin. When running from build area, sys.executable is 'python'. But 'python' is actually a directory, 'python.exe' is the executable.