import os
import sys
import shutil

DIR = os.path.dirname(os.path.abspath(__file__))
NAME = os.path.basename(__file__)

if not sys.argv[1:]:
  sys.exit('''\
usage: %(NAME)s child    -- internal param to launch child process
       %(NAME)s spaced   -- run test for dir with spaces
       %(NAME)s <any>    -- run test for dir with no spaces
''' % dict(NAME=NAME))
elif sys.argv[1] == 'child':
  print('  %s' % __file__)
  print('  passed')
else:
  if sys.argv[1] == 'spaced':
    dirname = os.path.join(DIR, 's pace d')
  else:
    dirname = os.path.join(DIR, 'non-spaced')

  # create dir
  print('testing %s' % dirname)
  if not os.path.exists(dirname):
    os.makedirs(os.path.join(DIR, dirname))
  # copy self
  shutil.copy(__file__, dirname)
  # execute
  selfpath = os.path.join(dirname, os.path.basename(__file__))
  os.execv(sys.executable, [sys.executable, selfpath, 'child'])