def can_register_and_unregister():
try:
assert Description.bases is str
register_description(str)
assert Description.bases is str
register_description(int)
assert Description.bases == (str, int)
register_description(int)
assert Description.bases == (str, int)
register_description(float)
assert Description.bases == (str, int, float)
unregister_description(int)
assert Description.bases == (str, float)
unregister_description(float)
assert Description.bases is str
unregister_description(str)
assert Description.bases is object
register_description(str)
assert Description.bases is str
register_description(object)
assert Description.bases is object
Description.bases = (str,)
unregister_description(str)
assert Description.bases is object
unregister_description(str)
assert Description.bases is object
finally:
Description.bases = str
def can_only_unregister_types():
with raises(TypeError, match="Only types can be unregistered\\."):
# noinspection PyTypeChecker
unregister_description("foo") # type: ignore
def registered(base: type):
register_description(base)
try:
yield None
finally:
unregister_description(LazyString)
