from mythril.disassembler.disassembly import Disassembly
from mythril.laser.ethereum.state.environment import Environment
from mythril.laser.ethereum.state.account import Account
from mythril.laser.ethereum.state.machine_state import MachineState
from mythril.laser.ethereum.state.global_state import GlobalState
from mythril.laser.ethereum.state.world_state import WorldState
from mythril.laser.ethereum.instructions import Instruction
from mythril.laser.ethereum.transaction.transaction_models import MessageCallTransaction


def test_codecopy_concrete():
    # Arrange
    active_account = Account("0x0", code=Disassembly("60606040"))
    environment = Environment(active_account, None, None, None, None, None)
    og_state = GlobalState(None, environment, None, MachineState(gas_limit=8000000))
    og_state.transaction_stack.append(
        (MessageCallTransaction(world_state=WorldState(), gas_limit=8000000), None)
    )

    og_state.mstate.stack = [2, 2, 2]
    instruction = Instruction("codecopy", dynamic_loader=None)

    # Act
    new_state = instruction.evaluate(og_state)[0]

    # Assert
    assert new_state.mstate.memory[2] == 96
    assert new_state.mstate.memory[3] == 64