test_reservoir_restored_after_child_full_drain_and_revert()

Documentation for tests/amsterdam/eip8037_state_creation_gas_cost_increase/test_state_gas_call.py::test_reservoir_restored_after_child_full_drain_and_revert@5c024cbb.

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_reservoir_restored_after_child_full_drain_and_revert --fork Amsterdam

Test reservoir restored when child exactly exhausts it then reverts.

The child performs exactly one SSTORE consuming the entire reservoir (no spill into gas_left), then REVERTs. The full reservoir is returned to the parent.

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

@pytest.mark.valid_from("EIP8037")
def test_reservoir_restored_after_child_full_drain_and_revert(
    state_test: StateTestFiller,
    pre: Alloc,
    fork: Fork,
) -> None:
    """
    Test reservoir restored when child exactly exhausts it then reverts.

    The child performs exactly one SSTORE consuming the entire reservoir
    (no spill into gas_left), then REVERTs. The full reservoir is
    returned to the parent.
    """
    sstore_state_gas = Op.SSTORE(new_value=1).state_cost(fork)

    child = pre.deploy_contract(
        code=(Op.SSTORE(0, 1) + Op.REVERT(0, 0)),
    )

    parent_storage = Storage()
    parent = pre.deploy_contract(
        code=(
            Op.POP(Op.CALL(gas=500_000, address=child))
            + Op.SSTORE(parent_storage.store_next(1), 1)
        ),
    )

    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.