test_bal_withdrawal_to_coinbase()

Documentation for tests/amsterdam/eip7928_block_level_access_lists/test_block_access_lists_eip4895.py::test_bal_withdrawal_to_coinbase@892e6d1e.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip7928_block_level_access_lists/test_block_access_lists_eip4895.py::test_bal_withdrawal_to_coinbase --fork Amsterdam

Ensure BAL captures withdrawal to coinbase address.

Block with 1 transaction and 1 withdrawal to coinbase/fee recipient. Coinbase receives both transaction fees and withdrawal.

Source code in tests/amsterdam/eip7928_block_level_access_lists/test_block_access_lists_eip4895.py

def test_bal_withdrawal_to_coinbase(
    pre: Alloc,
    blockchain_test: BlockchainTestFiller,
    fork: Fork,
) -> None:
    """
    Ensure BAL captures withdrawal to coinbase address.

    Block with 1 transaction and 1 withdrawal to coinbase/fee recipient.
    Coinbase receives both transaction fees and withdrawal.
    """
    alice = pre.fund_eoa()
    bob = pre.fund_eoa(amount=0)
    coinbase = pre.fund_eoa(amount=0)

    intrinsic_gas_calculator = fork.transaction_intrinsic_cost_calculator()
    intrinsic_gas = intrinsic_gas_calculator()
    tx_gas_limit = intrinsic_gas + 1000
    gas_price = 0xA

    tx = Transaction(
        sender=alice,
        to=bob,
        value=5,
        gas_limit=tx_gas_limit,
        gas_price=gas_price,
    )

    # Calculate tip to coinbase
    genesis_env = Environment(base_fee_per_gas=0x7)
    base_fee_per_gas = fork.base_fee_per_gas_calculator()(
        parent_base_fee_per_gas=int(genesis_env.base_fee_per_gas or 0),
        parent_gas_used=0,
        parent_gas_limit=genesis_env.gas_limit,
    )
    tip_to_coinbase = (gas_price - base_fee_per_gas) * intrinsic_gas
    coinbase_final_balance = tip_to_coinbase + (10 * GWEI)

    block = Block(
        txs=[tx],
        fee_recipient=coinbase,
        header_verify=Header(base_fee_per_gas=base_fee_per_gas),
        withdrawals=[
            Withdrawal(
                index=0,
                validator_index=0,
                address=coinbase,
                amount=10,
            )
        ],
        expected_block_access_list=BlockAccessListExpectation(
            account_expectations={
                alice: BalAccountExpectation(
                    nonce_changes=[
                        BalNonceChange(block_access_index=1, post_nonce=1)
                    ],
                ),
                bob: BalAccountExpectation(
                    balance_changes=[
                        BalBalanceChange(block_access_index=1, post_balance=5)
                    ],
                ),
                coinbase: BalAccountExpectation(
                    balance_changes=[
                        BalBalanceChange(
                            block_access_index=1, post_balance=tip_to_coinbase
                        ),
                        BalBalanceChange(
                            block_access_index=2,
                            post_balance=coinbase_final_balance,
                        ),
                    ],
                ),
            }
        ),
    )

    blockchain_test(
        pre=pre,
        blocks=[block],
        post={
            alice: Account(nonce=1),
            bob: Account(balance=5),
            coinbase: Account(balance=coinbase_final_balance),
        },
        genesis_environment=genesis_env,
    )

Parametrized Test Cases

This test generates 1 parametrized test case across 1 fork.