test_extcodehash_call_to_nonexistent()

Documentation for tests/constantinople/eip1052_extcodehash/test_extcodehash.py::test_extcodehash_call_to_nonexistent@b314d18e.

Generate fixtures for these test cases for Amsterdam with:

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

Test EXTCODEHASH after calling a non-existent account.

Call a non-existent address using each call type, then check EXTCODEHASH — it returns 0 because the account does not exist.

Source code in tests/constantinople/eip1052_extcodehash/test_extcodehash.py

@pytest.mark.ported_from(
    [
        "https://github.com/ethereum/tests/blob/v13.3/src/GeneralStateTestsFiller/stExtCodeHash/callToNonExistentFiller.json",  # noqa: E501
    ],
    pr=["https://github.com/ethereum/execution-specs/pull/2410"],
)
@pytest.mark.with_all_call_opcodes
def test_extcodehash_call_to_nonexistent(
    state_test: StateTestFiller,
    pre: Alloc,
    call_opcode: Opcodes,
) -> None:
    """
    Test EXTCODEHASH after calling a non-existent account.

    Call a non-existent address using each call type, then check
    EXTCODEHASH — it returns 0 because the account does not exist.
    """
    storage = Storage()
    nonexistent = pre.nonexistent_account()

    code = Op.SSTORE(
        storage.store_next(1),
        call_opcode(address=nonexistent, gas=25_000),
    ) + Op.SSTORE(
        storage.store_next(0),
        Op.EXTCODEHASH(nonexistent),
    )

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

    tx = Transaction(sender=pre.fund_eoa(), to=code_address)

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

Parametrized Test Cases

This test generates 4 parametrized test cases across 10 forks.