test_bal_7702_delegated_storage_access()

Documentation for tests/amsterdam/eip7928_block_level_access_lists/test_block_access_lists_eip7702.py::test_bal_7702_delegated_storage_access@5c024cbb.

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_storage_access --fork Amsterdam

Ensure BAL captures storage operations when calling a delegated EIP-7702 account.

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

def test_bal_7702_delegated_storage_access(
    pre: Alloc,
    blockchain_test: BlockchainTestFiller,
) -> None:
    """
    Ensure BAL captures storage operations when calling a delegated
    EIP-7702 account.
    """
    # Oracle contract that reads from slot 0x01 and writes to slot 0x02
    oracle = pre.deploy_contract(
        code=Op.SLOAD(0x01) + Op.PUSH1(0x42) + Op.PUSH1(0x02) + Op.SSTORE
    )
    bob = pre.fund_eoa()

    alice = pre.deploy_contract(
        nonce=0x1, code=Spec7702.delegation_designation(oracle), balance=0
    )

    tx = Transaction(
        sender=bob,
        to=alice,  # Bob calls Alice (delegated account)
        value=10,
    )

    block = Block(
        txs=[tx],
        expected_block_access_list=BlockAccessListExpectation(
            account_expectations={
                alice: BalAccountExpectation(
                    balance_changes=[
                        BalBalanceChange(block_access_index=1, post_balance=10)
                    ],
                    storage_changes=[
                        BalStorageSlot(
                            slot=0x02,
                            slot_changes=[
                                BalStorageChange(
                                    block_access_index=1, post_value=0x42
                                )
                            ],
                        )
                    ],
                    storage_reads=[0x01],
                ),
                bob: BalAccountExpectation(
                    nonce_changes=[
                        BalNonceChange(block_access_index=1, post_nonce=1)
                    ],
                ),
                # Oracle appears in BAL due to account access
                # (delegation target)
                oracle: BalAccountExpectation.empty(),
            }
        ),
    )

    post = {
        alice: Account(
            balance=10,
            storage={0x02: 0x42},
        ),
        bob: Account(nonce=1),
    }

    blockchain_test(
        pre=pre,
        blocks=[block],
        post=post,
    )

Parametrized Test Cases

This test generates 1 parametrized test case across 1 fork.