def test_list_class_lookup_all():
reg1 = Registry()
reg2 = Registry()
reg1.register(target, (), 'reg1')
reg2.register(target, (), 'reg2')
lookup = ListClassLookup([reg1, reg2])
assert list(lookup.all(target, ())) == ['reg1', 'reg2']
def test_list_class_lookup():
reg1 = Registry()
reg2 = Registry()
reg2.register(target, (), 'reg2 component')
lookup = ListClassLookup([reg1, reg2])
assert lookup.get(target, ()) == 'reg2 component'
reg1.register(target, (), 'reg1 component')
assert lookup.get(target, ()) == 'reg1 component'
def test_list_class_lookup_not_found():
reg1 = Registry()
reg2 = Registry()
lookup = ListClassLookup([reg1, reg2])
assert lookup.get(target, ()) is None