test_request_overpayment()¶

@EIPChecklist.SystemContract.Test.ValueTransfer.Fee.Over()
def test_request_overpayment(
    blockchain_test: BlockchainTestFiller,
    pre: Alloc,
    request_class: Type[FeeSystemContractRequest],
) -> None:
    """
    A request paying one wei more than required is queued and the surplus
    stays in the predeploy.
    """
    request = request_class.from_index(0).copy(
        fee=request_class.get_fee(0) + 1
    )
    predeploy = request_class.system_contract_address
    sender = pre.fund_eoa()
    txs = SystemContractInteractionTransaction(
        sender_account=sender, requests=[request]
    ).transactions()

    blockchain_test(
        pre=pre,
        blocks=[
            Block(
                txs=txs,
                header_verify=Header(
                    requests_hash=Requests(request.with_source_address(sender))
                ),
                expected_block_access_list=BlockAccessListExpectation(
                    account_expectations={
                        predeploy: BalAccountExpectation(
                            balance_changes=[
                                BalBalanceChange(
                                    block_access_index=1,
                                    post_balance=request.value,
                                )
                            ],
                            storage_changes=[
                                queued_count_changes(request_class, 1, 2)
                            ],
                        ),
                    }
                ),
            )
        ],
        post={predeploy: Account(balance=request.value)},
    )