test_exchange_invalid_immediate_aborts()

Documentation for tests/amsterdam/eip8024_dupn_swapn_exchange/test_exchange.py::test_exchange_invalid_immediate_aborts@c74f1a67.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip8024_dupn_swapn_exchange/test_exchange.py::test_exchange_invalid_immediate_aborts --fork Amsterdam

Test EXCHANGE aborts with invalid immediates (82-127).

This range is forbidden because it overlaps with JUMPDEST and PUSH opcodes.

Source code in tests/amsterdam/eip8024_dupn_swapn_exchange/test_exchange.py

@pytest.mark.parametrize(
    "immediate",
    range(82, 128),  # Forbidden range: 0x52-0x7F
    ids=lambda x: f"imm_{x}",
)
def test_exchange_invalid_immediate_aborts(
    immediate: int,
    pre: Alloc,
    state_test: StateTestFiller,
) -> None:
    """
    Test EXCHANGE aborts with invalid immediates (82-127).

    This range is forbidden because it overlaps with JUMPDEST and PUSH opcodes.
    """
    sender = pre.fund_eoa()

    code = Bytecode()
    code += Op.SSTORE(0, 1)  # Marker

    # Push 30 items (max needed for any valid EXCHANGE)
    for i in range(30):
        code += Op.PUSH1(i)

    code += Op.EXCHANGE[immediate.to_bytes(1, "big")]
    code += Op.SSTORE(0, 2)  # Should never execute
    code += Op.STOP

    contract_address = pre.deploy_contract(code=code)
    tx = Transaction(to=contract_address, sender=sender)

    # Execution aborted, transaction reverts
    post = {contract_address: Account(storage={})}

    state_test(pre=pre, post=post, tx=tx)

Parametrized Test Cases

This test generates 46 parametrized test cases across 1 fork.