"""Shared test fixtures."""

from __future__ import annotations

import pytest


@pytest.fixture(autouse=True)
def _isolate_mcp_config(
    monkeypatch: pytest.MonkeyPatch, tmp_path_factory: pytest.TempPathFactory
) -> None:
    """Keep the whole suite from reading the developer's real MCP config.

    ``run_strix_scan`` connects the MCP servers listed in
    ``~/.strix/mcp-servers.json`` and threads an inventory of them into the
    prompt context. Without isolation, any test that drives the runner on a
    machine that has a real config would do real network I/O and see MCP
    connections it never asked for. Point the loader at a path that does not
    exist so it resolves to "no connections", and clear the per-run selection
    env vars. Tests that exercise the loader itself set their own
    ``STRIX_MCP_CONFIG`` after this runs and so override it.
    """
    missing = tmp_path_factory.mktemp("mcp-isolation") / "no-servers.json"
    monkeypatch.setenv("STRIX_MCP_CONFIG", str(missing))
    monkeypatch.delenv("STRIX_MCP_ONLY", raising=False)
    monkeypatch.delenv("STRIX_MCP_EXCLUDE", raising=False)