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test_worst_returndatasize_nonzero()

Documentation for tests/benchmark/test_worst_compute.py::test_worst_returndatasize_nonzero@88e9fb8f.

Generate fixtures for these test cases for Osaka with:

fill -v tests/benchmark/test_worst_compute.py::test_worst_returndatasize_nonzero -m benchmark

Test running a block which execute as many RETURNDATASIZE opcodes which return a non-zero buffer as possible.

The returned_size parameter indicates the size of the returned data buffer. The return_data_style indicates how returned data is produced for the opcode caller.

Source code in tests/benchmark/test_worst_compute.py 
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@pytest.mark.parametrize(
    "return_data_style",
    [
        ReturnDataStyle.RETURN,
        ReturnDataStyle.REVERT,
        ReturnDataStyle.IDENTITY,
    ],
)
@pytest.mark.parametrize("returned_size", [1, 0])
def test_worst_returndatasize_nonzero(
    benchmark_test: BenchmarkTestFiller,
    pre: Alloc,
    returned_size: int,
    return_data_style: ReturnDataStyle,
) -> None:
    """
    Test running a block which execute as many RETURNDATASIZE opcodes which
    return a non-zero buffer as possible.

    The `returned_size` parameter indicates the size of the returned data
    buffer. The `return_data_style` indicates how returned data is produced for
    the opcode caller.
    """
    setup = Bytecode()
    if return_data_style != ReturnDataStyle.IDENTITY:
        setup += Op.STATICCALL(
            address=pre.deploy_contract(
                code=Op.REVERT(0, returned_size)
                if return_data_style == ReturnDataStyle.REVERT
                else Op.RETURN(0, returned_size)
            )
        )
    else:
        setup += Op.MSTORE8(0, 1) + Op.STATICCALL(
            address=0x04,  # Identity precompile
            args_size=returned_size,
        )

    benchmark_test(
        code_generator=JumpLoopGenerator(setup=setup, attack_block=Op.POP(Op.RETURNDATASIZE)),
    )

Parametrized Test Cases

This test case is only parametrized by fork.

Test ID (Abbreviated) returned_size return_data_style
...fork_Prague-blockchain_test-returned_size_1-return_data_style_ReturnDataStyle.RETURN 1 ReturnDataStyle.RETURN
...fork_Prague-blockchain_test-returned_size_1-return_data_style_ReturnDataStyle.REVERT 1 ReturnDataStyle.REVERT
...fork_Prague-blockchain_test-returned_size_1-return_data_style_ReturnDataStyle.IDENTITY 1 ReturnDataStyle.IDENTITY
...fork_Prague-blockchain_test-returned_size_0-return_data_style_ReturnDataStyle.RETURN 0 ReturnDataStyle.RETURN
...fork_Prague-blockchain_test-returned_size_0-return_data_style_ReturnDataStyle.REVERT 0 ReturnDataStyle.REVERT
...fork_Prague-blockchain_test-returned_size_0-return_data_style_ReturnDataStyle.IDENTITY 0 ReturnDataStyle.IDENTITY
...fork_Osaka-blockchain_test-returned_size_1-return_data_style_ReturnDataStyle.RETURN 1 ReturnDataStyle.RETURN
...fork_Osaka-blockchain_test-returned_size_1-return_data_style_ReturnDataStyle.REVERT 1 ReturnDataStyle.REVERT
...fork_Osaka-blockchain_test-returned_size_1-return_data_style_ReturnDataStyle.IDENTITY 1 ReturnDataStyle.IDENTITY
...fork_Osaka-blockchain_test-returned_size_0-return_data_style_ReturnDataStyle.RETURN 0 ReturnDataStyle.RETURN
...fork_Osaka-blockchain_test-returned_size_0-return_data_style_ReturnDataStyle.REVERT 0 ReturnDataStyle.REVERT
...fork_Osaka-blockchain_test-returned_size_0-return_data_style_ReturnDataStyle.IDENTITY 0 ReturnDataStyle.IDENTITY