def get_contract_type(self, name: str, w3: Web3 = None) -> Contract:
"""
API to generate a contract factory class.
"""
current_w3 = None
if w3 is not None:
current_w3 = w3
else:
current_w3 = self.w3
validate_contract_name(name)
validate_w3_instance(current_w3)
if name in self.package_data['contract_types']:
contract_data = self.package_data['contract_types'][name]
validate_minimal_contract_data_present(contract_data)
contract_kwargs = generate_contract_factory_kwargs(contract_data)
contract_factory = current_w3.eth.contract(**contract_kwargs)
return contract_factory
raise ValidationError(
"Package does not have contract by name: {}.".format(name))
def test_validate_minimal_contract_data_present_invalidates(contract_data):
with pytest.raises(ValidationError):
validate_minimal_contract_data_present(contract_data)
def test_validate_minimal_contract_data_present_validates(contract_data):
assert validate_minimal_contract_data_present(contract_data) is None