def _args_from_proto(
self, proto: v2.program_pb2.Operation, *,
arg_function_language: str) -> Dict[str, arg_func_langs.ARG_LIKE]:
return_args = {}
for arg in self.args:
if arg.serialized_name not in proto.args:
if arg.default:
return_args[arg.constructor_arg_name] = arg.default
continue
elif arg.required:
raise ValueError(
f'Argument {arg.serialized_name} '
'not in deserializing args, but is required.')
value = arg_func_langs._arg_from_proto(
proto.args[arg.serialized_name],
arg_function_language=arg_function_language,
required_arg_name=None
if not arg.required else arg.serialized_name)
if arg.value_func is not None:
value = arg.value_func(value)
if value is not None:
return_args[arg.constructor_arg_name] = value
return return_args
def test_double_value():
"""Note: due to backwards compatibility, double_val conversion is one-way.
double_val can be converted to python float,
but a python float is converted into a float_val not a double_val.
"""
msg = v2.program_pb2.Arg()
msg.arg_value.double_value = 1.0
parsed = _arg_from_proto(msg, arg_function_language='')
assert parsed == 1
def test_correspondence(min_lang: str, value: ARG_LIKE,
proto: v2.program_pb2.Arg):
msg = v2.program_pb2.Arg()
json_format.ParseDict(proto, msg)
min_i = LANGUAGE_ORDER.index(min_lang)
for i, lang in enumerate(LANGUAGE_ORDER):
if i < min_i:
with pytest.raises(ValueError,
match='not supported by arg_function_language'):
_ = _arg_to_proto(value, arg_function_language=lang)
with pytest.raises(ValueError, match='Unrecognized function type'):
_ = _arg_from_proto(msg, arg_function_language=lang)
else:
parsed = _arg_from_proto(msg, arg_function_language=lang)
packed = json_format.MessageToDict(
_arg_to_proto(value, arg_function_language=lang),
including_default_value_fields=True,
preserving_proto_field_name=True,
use_integers_for_enums=True)
assert parsed == value
assert packed == proto
def test_unsupported_function_language():
with pytest.raises(ValueError, match='Unrecognized arg_function_language'):
_ = _arg_to_proto(1, arg_function_language='NEVER GONNAH APPEN')
with pytest.raises(ValueError, match='Unrecognized arg_function_language'):
_ = _arg_from_proto(None, arg_function_language='NEVER GONNAH APPEN')