def __init__(self, modules=None, binder=None, stage=None):
if modules is None:
modules = []
elif not hasattr(modules, '__iter__'):
modules = [modules]
if binder:
self._binder = binder.create_child()
else:
self._binder = Binder()
self._stage = stage
self.add_modules(modules)
def describe_a_Binder():
binder = Binder()
binder.bind(object, to_instance=object())
def describe_when_adding_a_duplicate_binding():
try:
binder.bind(object, to_instance=object())
e = None
except BindingError, e:
pass
def then_a_BindingError_is_raised():
assert isinstance(e, BindingError)
