Security analysis tool for EVM bytecode. Supports smart contracts built for Ethereum, Hedera, Quorum, Vechain, Roostock, Tron and other EVM-compatible blockchains.
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mythril/tests/laser/transaction/symbolic_test.py

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from mythril.laser.ethereum.transaction.symbolic import (
execute_message_call,
execute_contract_creation,
)
from mythril.laser.ethereum.transaction import (
MessageCallTransaction,
ContractCreationTransaction,
)
from mythril.laser.ethereum.svm import LaserEVM
from mythril.laser.ethereum.state.account import Account
from mythril.laser.ethereum.state.world_state import WorldState
from mythril.laser.smt import symbol_factory
import unittest.mock as mock
from unittest.mock import MagicMock
def _is_message_call(_, transaction):
assert isinstance(transaction, MessageCallTransaction)
def _is_contract_creation(_, transaction):
assert isinstance(transaction, ContractCreationTransaction)
@mock.patch(
"mythril.laser.ethereum.transaction.symbolic._setup_global_state_for_execution"
)
def test_execute_message_call(mocked_setup: MagicMock):
# Arrange
laser_evm = LaserEVM({})
world_state = WorldState()
world_state.put_account(Account("0x0"))
laser_evm.open_states = [world_state]
laser_evm.exec = MagicMock()
mocked_setup.side_effect = _is_message_call
# Act
execute_message_call(laser_evm, symbol_factory.BitVecVal(0, 256))
# Assert
# laser_evm.exec.assert_called_once()
assert laser_evm.exec.call_count == 1
# mocked_setup.assert_called_once()
assert mocked_setup.call_count == 1
assert len(laser_evm.open_states) == 0
@mock.patch(
"mythril.laser.ethereum.transaction.symbolic._setup_global_state_for_execution"
)
def test_execute_contract_creation(mocked_setup: MagicMock):
# Arrange
laser_evm = LaserEVM({})
laser_evm.open_states = [WorldState(), WorldState()]
laser_evm.exec = MagicMock()
mocked_setup.side_effect = _is_contract_creation
# Act
execute_contract_creation(laser_evm, "606000")
# Assert
# mocked_setup.assert_called()
assert mocked_setup.call_count >= 1
# laser_evm.exec.assert_called_once()
assert laser_evm.exec.call_count == 1
assert len(laser_evm.open_states) == 0