Stub observers¶
Stub observers allow you to execute extra code (similar to python-mock “side effects”, but easier):
class Observer(object):
def __init__(self):
self.state = None
def notify(self, *args, **kargs):
self.state = args[0]
observer = Observer()
stub = Stub()
stub.foo.attach(observer.notify)
stub.foo(2)
assert_that(observer.state, is_(2))