test_worst_clz_same_input()

Documentation for tests/benchmark/test_worst_compute.py::test_worst_clz_same_input@v5.0.0.

Generate fixtures for these test cases for Osaka with:

fill -v tests/benchmark/test_worst_compute.py::test_worst_clz_same_input --fork Osaka

Test running a block with as many CLZ with same input as possible.

Source code in tests/benchmark/test_worst_compute.py

@pytest.mark.valid_from("Osaka")
def test_worst_clz_same_input(
    blockchain_test: BlockchainTestFiller,
    pre: Alloc,
    fork: Fork,
    gas_benchmark_value: int,
    env: Environment,
):
    """Test running a block with as many CLZ with same input as possible."""
    tx_gas_limit = fork.transaction_gas_limit_cap() or env.gas_limit

    magic_value = 248  # CLZ(248) = 248

    calldata = Op.PUSH1(magic_value)
    attack_block = Op.CLZ
    code = code_loop_precompile_call(calldata, attack_block, fork)
    assert len(code) <= fork.max_code_size()

    code_address = pre.deploy_contract(code=code)

    sender = pre.fund_eoa()
    tx_count = gas_benchmark_value // tx_gas_limit
    remainder_gas = gas_benchmark_value % tx_gas_limit

    txs = [
        Transaction(
            to=code_address,
            gas_limit=tx_gas_limit if i < tx_count else remainder_gas,
            nonce=i,
            sender=sender,
        )
        for i in range(tx_count + 1)
    ]

    blockchain_test(
        genesis_environment=env,
        pre=pre,
        post={},
        blocks=[Block(txs=txs)],
    )

Parametrized Test Cases

This test case is only parametrized by fork.

Fork All Forks Osaka

Fixture Type All Fixture Types blockchain_test

Test ID (Abbreviated)
...fork_Osaka-blockchain_test