def __init__(self, base_db: BaseDB) -> None:
if not self.vm_configuration:
raise ValueError(
"The Chain class cannot be instantiated with an empty `vm_configuration`"
)
else:
validate_vm_configuration(self.vm_configuration)
self.chaindb = self.get_chaindb_class()(base_db)
self.headerdb = HeaderDB(base_db)
if self.gas_estimator is None:
self.gas_estimator = get_gas_estimator() # type: ignore
def __init__(self, chaindb: BaseChainDB, header: BlockHeader=None) -> None:
if not self.vm_configuration:
raise ValueError(
"The Chain class cannot be instantiated with an empty `vm_configuration`"
)
else:
validate_vm_configuration(self.vm_configuration)
self.chaindb = chaindb
self.header = header
if self.header is None:
self.header = self.create_header_from_parent(self.get_canonical_head())
if self.gas_estimator is None:
self.gas_estimator = get_gas_estimator() # type: ignore
def test_validate_vm_configuration_bad_configs(value):
with pytest.raises(ValidationError):
validate_vm_configuration(value)