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test_extcodehash_precompile()

Documentation for tests/constantinople/eip1052_extcodehash/test_extcodehash.py::test_extcodehash_precompile@tests-bal@v5.7.0.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/constantinople/eip1052_extcodehash/test_extcodehash.py::test_extcodehash_precompile --fork Amsterdam

Test EXTCODEHASH/EXTCODESIZE of precompile addresses.

Precompiles have no associated code, so both return 0.

Source code in tests/constantinople/eip1052_extcodehash/test_extcodehash.py 
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@pytest.mark.ported_from(
    [
        "https://github.com/ethereum/tests/blob/v13.3/src/GeneralStateTestsFiller/stExtCodeHash/extCodeHashPrecompilesFiller.yml",  # noqa: E501
    ],
    pr=["https://github.com/ethereum/execution-specs/pull/2302"],
)
@pytest.mark.with_all_precompiles
def test_extcodehash_precompile(
    state_test: StateTestFiller,
    pre: Alloc,
    fork: Fork,
    precompile: Address,
) -> None:
    """
    Test EXTCODEHASH/EXTCODESIZE of precompile addresses.

    Precompiles have no associated code, so both return 0.
    """
    storage = Storage()

    code = Op.SSTORE(
        storage.store_next(0),
        Op.EXTCODEHASH(precompile),
    ) + Op.SSTORE(
        storage.store_next(0),
        Op.EXTCODESIZE(precompile),
    )

    code_address = pre.deploy_contract(code, storage=storage.canary())

    gas_limit = 400_000
    if fork.is_eip_enabled(8037):
        gas_limit = 1_000_000
    tx = Transaction(
        sender=pre.fund_eoa(),
        to=code_address,
        gas_limit=gas_limit,
    )

    state_test(
        pre=pre,
        post={code_address: Account(storage=storage)},
        tx=tx,
    )

Parametrized Test Cases

This test generates 18 parametrized test cases across 10 forks.