# coding=utf-8
# Ensures the project root is on sys.path when running pytest from any cwd.
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
if str(ROOT) not in sys.path:
    sys.path.insert(0, str(ROOT))


import pytest


@pytest.fixture(autouse=True)
def _isolate_files_mcp_root(tmp_path, monkeypatch):
    """Point files_mcp at a fresh tmp_path for every test.

    Sets FILES_MCP_ROOT and rebinds files_mcp.core.path_guard's module-level
    _ROOT, so each test starts with an empty sandbox. Spark_executor tests
    are unaffected by this fixture — they don't touch the files_mcp sandbox.
    """
    monkeypatch.setenv("FILES_MCP_ROOT", str(tmp_path))
    from files_mcp.core import path_guard
    path_guard.set_root_for_testing(tmp_path.resolve())
    yield