def test_chain_class_lookup_all():
reg1 = Registry()
reg2 = Registry()
reg1.register(target, (), 'reg1')
reg2.register(target, (), 'reg2')
lookup = ChainClassLookup(reg1, reg2)
assert list(lookup.all(target, ())) == ['reg1', 'reg2']
def test_chain_class_lookup():
reg1 = Registry()
reg2 = Registry()
reg2.register(target, (), 'reg2 component')
lookup = ChainClassLookup(reg1, reg2)
assert lookup.get(target, ()) == 'reg2 component'
reg1.register(target, (), 'reg1 component')
assert lookup.get(target, ()) == 'reg1 component'
