"""Regression: the per-turn subagent consult budget must pass chat-config validation.

``subagent_consult_budget`` rides in the request ``config`` (composer stepper)
but isn't part of any capability's public schema. It must be treated as a
runtime-only key, not rejected by ``extra="forbid"`` — otherwise a second turn
with a connected agent errors with "Extra inputs are not permitted".
"""

from __future__ import annotations

import pytest

from deeptutor.runtime.request_contracts import (
    validate_capability_config,
    validate_chat_request_config,
)


def test_chat_config_allows_subagent_consult_budget() -> None:
    # Must not raise (it's stripped as a runtime-only key before validation).
    validate_chat_request_config({"subagent_consult_budget": 5})
    validate_capability_config("chat", {"subagent_consult_budget": 5})


def test_chat_config_still_rejects_unknown_keys() -> None:
    with pytest.raises(ValueError, match="Extra inputs are not permitted"):
        validate_chat_request_config({"totally_unknown_key": 1})