def __init__(self, address: bytes, **kwargs: Any) -> None:
if self.needs_bytecode_linking:
raise BytecodeLinkingError(
"Contract cannot be instantiated until its bytecode is linked."
)
validate_address(address)
# todo: remove automatic checksumming of address once web3 dep is updated in pytest-ethereum
super(LinkableContract,
self).__init__(address=to_checksum_address(address), **kwargs)
def get_contract_instance(self, name: ContractName,
address: Address) -> Contract:
"""
Will return a ``Web3.contract`` instance generated from the contract type data available
in ``Package.manifest`` and the provided ``address``. The provided ``address`` must be
valid on the connected chain available through ``Package.w3``.
"""
validate_address(address)
validate_contract_name(name)
try:
self.manifest["contract_types"][name]["abi"]
except KeyError:
raise InsufficientAssetsError(
"Package does not have the ABI required to generate a contract instance "
f"for contract: {name} at address: {address}.")
contract_kwargs = generate_contract_factory_kwargs(
self.manifest["contract_types"][name])
canonical_address = to_canonical_address(address)
contract_instance = self.w3.eth.contract(address=canonical_address,
**contract_kwargs)
return contract_instance
def _deployment(
contract_instance: str,
contract_type: str,
deployment_bytecode: Dict[str, Any],
runtime_bytecode: Dict[str, Any],
compiler: Dict[str, Any],
block_uri: URI,
address: HexStr,
tx: HexStr,
block: HexStr,
manifest: Manifest,
) -> Manifest:
validate_address(address)
if not is_BIP122_block_uri(block_uri):
raise ManifestBuildingError(f"{block_uri} is not a valid BIP122 URI.")
if tx:
if not is_string(tx) and not is_hex(tx):
raise ManifestBuildingError(
f"Transaction hash: {tx} is not a valid hexstring"
)
if block:
if not is_string(block) and not is_hex(block):
raise ManifestBuildingError(f"Block hash: {block} is not a valid hexstring")
# todo: validate db, rb and compiler are properly formatted dicts
deployment_data = _build_deployments_object(
contract_type,
deployment_bytecode,
runtime_bytecode,
compiler,
address,
tx,
block,
manifest,
)
return assoc_in(
manifest, ["deployments", block_uri, contract_instance], deployment_data
)
def test_validate_address_rejects_incorrectly_formatted_adresses(address):
with pytest.raises(ValidationError):
validate_address(address)
def test_validate_address_accepts_canonicalized_addresses(address):
result = validate_address(address)
assert result is None