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test_stack_access_call_contexts()

Documentation for tests/amsterdam/eip8024_dupn_swapn_exchange/test_execution_contexts.py::test_stack_access_call_contexts@26332146.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/amsterdam/eip8024_dupn_swapn_exchange/test_execution_contexts.py::test_stack_access_call_contexts --fork Amsterdam

Test DUPN, SWAPN and EXCHANGE in every call frame type.

The callee returns each opcode's result through memory, so the check also holds inside STATICCALL frames where storage writes are banned. The caller stores the call's success flag and the returned markers.

Source code in tests/amsterdam/eip8024_dupn_swapn_exchange/test_execution_contexts.py 
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@EIPChecklist.Opcode.Test.ExecutionContext.Call()
@EIPChecklist.Opcode.Test.ExecutionContext.Callcode()
@EIPChecklist.Opcode.Test.ExecutionContext.Delegatecall()
@EIPChecklist.Opcode.Test.ExecutionContext.Staticcall()
@pytest.mark.with_all_call_opcodes
def test_stack_access_call_contexts(
    state_test: StateTestFiller,
    pre: Alloc,
    call_opcode: Op,
) -> None:
    """
    Test DUPN, SWAPN and EXCHANGE in every call frame type.

    The callee returns each opcode's result through memory, so the check
    also holds inside STATICCALL frames where storage writes are banned.
    The caller stores the call's success flag and the returned markers.
    """
    callee_address = pre.deploy_contract(stack_access_memory_code())

    caller_code = (
        Op.SSTORE(
            0,
            call_opcode(address=callee_address, ret_offset=0, ret_size=96),
        )
        + Op.SSTORE(1, Op.MLOAD(0))
        + Op.SSTORE(2, Op.MLOAD(32))
        + Op.SSTORE(3, Op.MLOAD(64))
    )
    caller_address = pre.deploy_contract(caller_code)

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

    post = {
        caller_address: Account(
            storage={
                0: 1,
                1: DUPN_MARKER,
                2: SWAPN_MARKER,
                3: EXCHANGE_MARKER,
            },
        ),
    }

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

Parametrized Test Cases

This test generates 4 parametrized test cases across 1 fork.