def test_preprocess():
 try:
  keys = [('PYLEARN2_' + str(uuid.uuid1())[:8]) for _ in xrange(3)]
  strs = [('${%s}' % k) for k in keys]
  os.environ[keys[0]] = keys[1]
  assert (preprocess(strs[0]) == keys[1])
  assert (preprocess(strs[1], environ={keys[1]: keys[2]}) == keys[2])
  assert (preprocess(strs[0], environ={keys[0]: keys[2]}) == keys[2])
  raised = False
  try:
   preprocess(strs[2], environ={keys[1]: keys[0]})
  except ValueError:
   raised = True
  assert raised
 finally:
  for key in keys:
   if (key in os.environ):
    del os.environ[key]

def test_preprocess ( ) : try : keys = [ ( 'PYLEARN2_' + str ( uuid . uuid1 ( ) ) [ : 8 ] ) for _ in xrange ( 3 ) ] strs = [ ( '${%s}' % k ) for k in keys ] os . environ [ keys [ 0 ] ] = keys [ 1 ] assert ( preprocess ( strs [ 0 ] ) == keys [ 1 ] ) assert ( preprocess ( strs [ 1 ] , environ = { keys [ 1 ] : keys [ 2 ] } ) == keys [ 2 ] ) assert ( preprocess ( strs [ 0 ] , environ = { keys [ 0 ] : keys [ 2 ] } ) == keys [ 2 ] ) raised = False try : preprocess ( strs [ 2 ] , environ = { keys [ 1 ] : keys [ 0 ] } ) except ValueError : raised = True assert raised finally : for key in keys : if ( key in os . environ ) : del os . environ [ key ]
tests that preprocess fills in environment variables using various interfaces and raises a valueerror if a needed environment variable definition is missing .