test_delegatecall_reservoir_passing()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_call.py::test_delegatecall_reservoir_passing@a9abd46e.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_call.py::test_delegatecall_reservoir_passing --fork Amsterdam

Test DELEGATECALL passes full reservoir to child.

DELEGATECALL runs child code in the caller's storage context. The child's SSTORE writes to the parent's storage using state gas from the reservoir.

Source code in tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_call.py

@pytest.mark.valid_from("EIP8037")
def test_delegatecall_reservoir_passing(
    state_test: StateTestFiller,
    pre: Alloc,
    fork: Fork,
) -> None:
    """
    Test DELEGATECALL passes full reservoir to child.

    DELEGATECALL runs child code in the caller's storage context.
    The child's SSTORE writes to the parent's storage using state
    gas from the reservoir.
    """
    sstore_state_gas = Op.SSTORE(new_value=1).state_cost(fork)

    parent_storage = Storage()
    # Library code runs in parent's context — slot is reserved on
    # parent_storage so the post check uses the same source of truth.
    library = pre.deploy_contract(
        code=Op.SSTORE(parent_storage.store_next(1, "delegated"), 1),
    )

    parent = pre.deploy_contract(
        code=(Op.DELEGATECALL(gas=100_000, address=library)),
    )

    tx = Transaction(
        to=parent,
        state_gas_reservoir=sstore_state_gas,
        sender=pre.fund_eoa(),
    )

    post = {parent: Account(storage=parent_storage)}
    state_test(pre=pre, post=post, tx=tx)

Parametrized Test Cases

This test generates 1 parametrized test case across 1 fork.