def testSimpleDefaultChooser(self): # {{{
"""If can't decide, choose original callable"""
var = []
def DummyNew1(var): # {{{
var.append("NEW1")
return 1
# End def #}}}
def DummyNew2(var): # {{{
var.append("NEW2")
return 2
# End def #}}}
def choose1(var):
return True
def choose2(var):
return True
s = Signal(DummyFunction)
c = [(choose1, DummyNew1), (choose2, DummyNew2)]
s.connect(choose=c)
s.chooserpolicy = "default"
ret = s(var)
self.assertEqual(ret, 1)
self.assertEqual(var, ["DUMMY"])
def testSimpleAmbiguousChooser(self): # {{{
"""Default or unknown policy generates error on ambiguity"""
var = []
def DummyNew1(var): # {{{
var.append("NEW1")
return 1
# End def #}}}
def DummyNew2(var): # {{{
var.append("NEW2")
return 2
# End def #}}}
def choose1(var):
return True
def choose2(var):
return True
s = Signal(DummyFunction)
c = [(choose1, DummyNew1), (choose2, DummyNew2)]
s.connect(choose=c)
s.chooserpolicy = None
try:
ret = s(var)
self.assert_(False)
except AmbiguousChoiceError, err:
self.assertEqual(str(err).strip(), "Found more than one selectable callable")
def testSimpleLastChooser(self): # {{{
"""Choose last acceptable choice"""
var = []
def DummyNew1(var): # {{{
var.append("NEW1")
return 1
# End def #}}}
def DummyNew2(var): # {{{
var.append("NEW2")
return 2
# End def #}}}
def choose1(var):
return True
def choose2(var):
return True
s = Signal(DummyFunction)
c = [(choose1, DummyNew1), (choose2, DummyNew2)]
s.connect(choose=c)
s.chooserpolicy = "last"
ret = s(var)
self.assertEqual(ret, 2)
self.assertEqual(var, ["NEW2"])
