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test_create2_succeeds_after_reverted_create2()

Documentation for tests/constantinople/eip1014_create2/test_create2_revert.py::test_create2_succeeds_after_reverted_create2@b47f0253.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/constantinople/eip1014_create2/test_create2_revert.py::test_create2_succeeds_after_reverted_create2 --fork Amsterdam

Test that CREATE2 succeeds after a previous CREATE2 at the same address was reverted.

Inner call does CREATE2 then REVERTs. Outer call then does the same CREATE2 which should succeed since the first was rolled back.

Source code in tests/constantinople/eip1014_create2/test_create2_revert.py 
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@pytest.mark.valid_from("Constantinople")
def test_create2_succeeds_after_reverted_create2(
    state_test: StateTestFiller,
    pre: Alloc,
) -> None:
    """
    Test that CREATE2 succeeds after a previous CREATE2 at the same address
    was reverted.

    Inner call does CREATE2 then REVERTs. Outer call then does the same
    CREATE2 which should succeed since the first was rolled back.
    """
    env = Environment()
    storage = Storage()
    salt = 1

    runtime_code = Op.SSTORE(0, 1) + Op.STOP
    initcode = Initcode(deploy_code=runtime_code)

    # The "creator" contract that does CREATE2 when called.
    creator_code = (
        Op.CALLDATACOPY(0, 0, Op.CALLDATASIZE)
        + Op.SSTORE(
            0,
            Op.CREATE2(
                value=0,
                offset=0,
                size=Op.CALLDATASIZE,
                salt=salt,
            ),
        )
        + Op.STOP
    )
    creator = pre.deploy_contract(creator_code)

    expected_address = compute_create2_address(creator, salt, initcode)

    # Outer contract:
    # 1. Call creator wrapped in a sub-call that reverts.
    # 2. Call creator again (should succeed).
    #
    # Use a "reverter" contract that calls creator then reverts.
    reverter_code = (
        Op.CALLDATACOPY(0, 0, Op.CALLDATASIZE)
        + Op.POP(
            Op.CALL(
                gas=200_000,
                address=creator,
                args_size=Op.CALLDATASIZE,
            )
        )
        + Op.REVERT(offset=0, size=0)
    )
    reverter = pre.deploy_contract(reverter_code)

    outer_code = (
        Op.CALLDATACOPY(0, 0, Op.CALLDATASIZE)
        # First attempt: call reverter (which calls creator then reverts)
        + Op.SSTORE(
            storage.store_next(0, "reverter_call_result"),
            Op.CALL(
                gas=300_000,
                address=reverter,
                args_size=Op.CALLDATASIZE,
            ),
        )
        # Second attempt: call creator directly (should succeed)
        + Op.SSTORE(
            storage.store_next(1, "creator_call_result"),
            Op.CALL(
                gas=300_000,
                address=creator,
                args_size=Op.CALLDATASIZE,
            ),
        )
        + Op.STOP
    )
    outer = pre.deploy_contract(outer_code, storage=storage.canary())

    sender = pre.fund_eoa()

    state_test(
        env=env,
        pre=pre,
        post={
            outer: Account(storage=storage),
            # The creator stored the CREATE2 result.
            creator: Account(storage={0: expected_address}),
            # The contract was deployed.
            expected_address: Account(code=runtime_code),
        },
        tx=Transaction(
            sender=sender,
            to=outer,
            gas_limit=2_000_000,
            data=initcode,
        ),
    )

Parametrized Test Cases

This test generates 1 parametrized test case across 11 forks.