def send_transaction(self, transaction):
from ethereum import tester
validate_transaction(transaction)
_send_evm_transaction(
tester_module=tester,
evm=self.evm,
transaction=transaction,
)
return self.evm.last_tx.hash
def estimate_gas(self, transaction):
from ethereum import tester
validate_transaction(transaction)
snapshot = self.take_snapshot()
_estimate_evm_transaction(
tester_module=tester,
evm=self.evm,
transaction=transaction,
)
txn_hash = self.evm.last_tx.hash
receipt = self.get_transaction_receipt(txn_hash)
self.revert_to_snapshot(snapshot)
return receipt['gas_used']
def call(self, transaction, block_number="latest"):
from ethereum import tester
validate_transaction(transaction)
if block_number != "latest":
raise NotImplementedError("Block number must be 'latest'.")
snapshot = self.take_snapshot()
output = _call_evm_transaction(
tester_module=tester,
evm=self.evm,
transaction=transaction,
)
self.revert_to_snapshot(snapshot)
return output
def _send_transaction(evm, raw_transaction):
validate_transaction(raw_transaction)
transaction = _format_transaction(evm, raw_transaction)
output = evm.tx(**transaction)
return output
