def __init__(self):
if not is_pyethereum21_available():
version = get_pyethereum_version()
if version is None:
raise pkg_resources.DistributionNotFound(
"The `ethereum` package is not available. The "
"`PyEthereum21Backend` requires a 2.0.0+ version of the "
"ethereum package to be installed.")
elif version not in Spec('>=2.0.0,<2.2.0'):
raise pkg_resources.DistributionNotFound(
"The `PyEthereum21Backend` requires a 2.0.0+ version of the "
"`ethereum` package. Found {0}".format(version))
self.fork_blocks = {}
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_pyethereum21_available():
from ethereum.tools.tester import (
TransactionFailed as Pyeth21TransactionFailed, )
else:
Pyeth21TransactionFailed = None
SUPPORTED_FORKS = {
FORK_HOMESTEAD,
FORK_DAO,
FORK_SPURIOUS_DRAGON,
FORK_TANGERINE_WHISTLE,
FORK_BYZANTIUM,
}
def _get_block_by_number(evm, block_number):
def eth_tester():
if not is_pyethereum21_available():
pytest.skip("PyEthereum >=2.0.0,<2.2.0 not available")
backend = PyEthereum21Backend()
return EthereumTester(backend=backend)