def test_listeners(member, id_, search):
lookup = singleton(member, id_)
result = lookup.lookup_result(search)
def call_me_back(result):
pass
result.add_lookup_listener(call_me_back)
result.remove_lookup_listener(call_me_back)
result.add_lookup_listener(call_me_back)
del call_me_back
gc.collect()
def test_lookup_result(member, id_, search):
lookup = singleton(member, id_)
result = lookup.lookup_result(search)
assert result
all_classes = result.all_classes()
assert isinstance(all_classes, Set)
assert not isinstance(all_classes, MutableSet)
assert len(all_classes) == 1
assert next(iter(all_classes)) is type(member)
all_instances = result.all_instances()
check_all_instances(member, all_instances)
all_items = result.all_items()
assert isinstance(all_items, Sequence)
assert not isinstance(all_items, MutableSequence)
assert len(all_items) == 1
check_item(member, id_, all_items[0])
assert all_items[0] == lookup.lookup_item(search)
def test_lookup_item(member, id_, search):
lookup = singleton(member, id_)
item = lookup.lookup_item(search)
check_item(member, id_, item)
assert item == lookup.lookup_item(search)
def test_lookup(member, id_, search):
lookup = singleton(member, id_)
assert lookup.lookup(search) is member
def test_instantiation():
assert singleton(object(), None)
def test_lookup_all(member, id_, search):
lookup = singleton(member, id_)
all_instances = lookup.lookup_all(search)
check_all_instances(member, all_instances)