c.l.w.s.StepsToGo : class documentation

>>> class FakeRequest:
...     def __init__(self, traversed, stack):
...         self._traversed_names = traversed
...         self.stack = stack
...     def getTraversalStack(self):
...         return self.stack
...     def setTraversalStack(self, stack):
...         self.stack = stack

>>> request = FakeRequest([], ['baz', 'bar', 'foo'])
>>> stepstogo = StepsToGo(request)
>>> stepstogo.startswith()
True
>>> stepstogo.startswith('foo')
True
>>> stepstogo.startswith('foo', 'bar')
True
>>> stepstogo.startswith('foo', 'baz')
False
>>> len(stepstogo)
3
>>> print stepstogo.consume()
foo
>>> request._traversed_names
['foo']
>>> request.stack
['baz', 'bar']
>>> print stepstogo.consume()
bar
>>> bool(stepstogo)
True
>>> print stepstogo.consume()
baz
>>> print stepstogo.consume()
None
>>> bool(stepstogo)
False

>>> request = FakeRequest([], ['baz', 'bar', 'foo'])
>>> list(StepsToGo(request))
['foo', 'bar', 'baz']