test_mcopy_memory_expansion()

Documentation for tests/cancun/eip5656_mcopy/test_mcopy_memory_expansion.py::test_mcopy_memory_expansion@b47f0253.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/cancun/eip5656_mcopy/test_mcopy_memory_expansion.py::test_mcopy_memory_expansion --fork Amsterdam

Perform MCOPY operations that expand the memory, and verify the gas it costs to do so.

Source code in tests/cancun/eip5656_mcopy/test_mcopy_memory_expansion.py

@pytest.mark.parametrize(
    "dest,src,length",
    [
        (0x00, 0x00, 0x01),
        (0x100, 0x00, 0x01),
        (0x1F, 0x00, 0x01),
        (0x20, 0x00, 0x01),
        (0x1000, 0x00, 0x01),
        (0x1000, 0x00, 0x40),
        (0x00, 0x00, 0x00),
        (2**256 - 1, 0x00, 0x00),
        (0x00, 2**256 - 1, 0x00),
        (2**256 - 1, 2**256 - 1, 0x00),
    ],
    ids=[
        "single_byte_expansion",
        "single_byte_expansion_2",
        "single_byte_expansion_word_boundary",
        "single_byte_expansion_word_boundary_2",
        "multi_word_expansion",
        "multi_word_expansion_2",
        "zero_length_expansion",
        "huge_dest_zero_length",
        "huge_src_zero_length",
        "huge_dest_huge_src_zero_length",
    ],
)
@pytest.mark.parametrize("successful", [True, False])
@pytest.mark.parametrize(
    "initial_memory",
    [
        bytes(range(0x00, 0x100)),
        bytes(),
    ],
    ids=[
        "from_existent_memory",
        "from_empty_memory",
    ],
)
@pytest.mark.valid_from("Cancun")
def test_mcopy_memory_expansion(
    state_test: StateTestFiller,
    env: Environment,
    pre: Alloc,
    post: Mapping[str, Account],
    tx: Transaction,
) -> None:
    """
    Perform MCOPY operations that expand the memory, and verify the gas it
    costs to do so.
    """
    state_test(
        env=env,
        pre=pre,
        post=post,
        tx=tx,
    )

Parametrized Test Cases

This test generates 40 parametrized test cases across 4 forks.