def testForeach (self):
class Trace:
def __init__ (self):
self._args = []
pass
def __call__ (self, args):
self._args.append (args)
pass
pass
tr1 = Trace ()
Nil.foreach (tr1)
self.assertEquals ([], tr1._args)
tr2 = Trace ()
List (1, 2, 3).foreach (tr2)
self.assertEquals ([1, 2, 3], tr2._args)
pass
