def test_on_ambiguity():
f = Dispatcher('f')
def identity(x):
return x
ambiguities = [False]
def on_ambiguity(dispatcher, amb):
ambiguities[0] = True
f.add((object, object), identity)
f.add((object, float), identity)
f.add((float, object), identity)
assert not ambiguities[0]
f.reorder(on_ambiguity=on_ambiguity)
assert ambiguities[0]
def reorder(self, on_ambiguity=ambiguity_error):
return OriginalDispatcher.reorder(self, on_ambiguity)
