test_bal_7702_delegated_via_call_opcode()

Documentation for tests/amsterdam/eip7928_block_level_access_lists/test_block_access_lists_eip7702.py::test_bal_7702_delegated_via_call_opcode@c74f1a67.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip7928_block_level_access_lists/test_block_access_lists_eip7702.py::test_bal_7702_delegated_via_call_opcode --fork Amsterdam

Ensure BAL captures delegation target when a contract uses *CALL opcodes to call a delegated account.

Source code in tests/amsterdam/eip7928_block_level_access_lists/test_block_access_lists_eip7702.py

@pytest.mark.with_all_call_opcodes
def test_bal_7702_delegated_via_call_opcode(
    pre: Alloc,
    blockchain_test: BlockchainTestFiller,
    call_opcode: Op,
) -> None:
    """
    Ensure BAL captures delegation target when a contract uses *CALL
    opcodes to call a delegated account.
    """
    # `oracle` contract that just returns successfully
    oracle = pre.deploy_contract(code=Op.STOP)

    # `alice` is a delegated account pointing to oracle
    alice = pre.deploy_contract(
        nonce=1,
        code=Spec7702.delegation_designation(oracle),
        balance=0,
    )

    # caller contract that uses `call_opcode` to call `alice`
    caller = pre.deploy_contract(code=(call_opcode(address=alice) + Op.STOP))

    bob = pre.fund_eoa()
    tx = Transaction(
        sender=bob,
        to=caller,  # `bob` calls caller contract
    )

    block = Block(
        txs=[tx],
        expected_block_access_list=BlockAccessListExpectation(
            account_expectations={
                bob: BalAccountExpectation(
                    nonce_changes=[
                        BalNonceChange(block_access_index=1, post_nonce=1)
                    ],
                ),
                caller: BalAccountExpectation.empty(),
                # `alice` is accessed due to being the call target
                alice: BalAccountExpectation.empty(),
                # `oracle` appears in BAL due to delegation target access
                oracle: BalAccountExpectation.empty(),
            }
        ),
    )

    post = {bob: Account(nonce=1)}
    blockchain_test(
        pre=pre,
        blocks=[block],
        post=post,
    )

Parametrized Test Cases

This test generates 4 parametrized test cases across 1 fork.