def __init__(self):
if not is_pyethereum16_available():
version = get_pyethereum_version()
if version is None:
raise pkg_resources.DistributionNotFound(
"The `ethereum` package is not available. The "
"`PyEthereum16Backend` requires a 1.6.x version of the "
"ethereum package to be installed.")
elif version not in Spec('>=1.6.0,<1.7.0'):
raise pkg_resources.DistributionNotFound(
"The `PyEthereum16Backend` requires a 1.6.x version of the "
"`ethereum` package. Found {0}".format(version))
self.reset_to_genesis()
from eth_tester.utils.accounts import (
private_key_to_address, )
from eth_tester.backends.pyethereum.serializers import (
serialize_block,
serialize_transaction,
serialize_transaction_hash,
serialize_transaction_receipt,
)
from eth_tester.backends.pyethereum.validation import (
validate_transaction, )
from eth_tester.utils.formatting import (
replace_exceptions, )
if is_pyethereum16_available():
from ethereum.tester import (
TransactionFailed as Pyeth16TransactionFailed, )
else:
Pyeth16TransactionFailed = None
#
# Internal getters for EVM objects
#
def _get_transaction_by_hash(evm, transaction_hash, mined=True):
# first check unmined transactions
for index, candidate in enumerate(evm.block.get_transaction_hashes()):
if candidate == transaction_hash:
transaction = evm.block.transaction_list[index]
return evm.block, transaction, index
def eth_tester():
if not is_pyethereum16_available():
pytest.skip("PyEthereum >=1.6.0,<1.7.0 not available")
backend = PyEthereum16Backend()
return EthereumTester(backend=backend)
