import pytest

from thoughtsync.config import Config


@pytest.fixture(autouse=True)
def _isolated_data_dir(tmp_path, monkeypatch):
    """Keep any media writes on an isolated temp dir rather than the fixed
    /var/thoughtsync. DB-free unit tests never actually hit it (create_app takes its
    signing key from env-or-random, not a file), but this stays defensive."""
    monkeypatch.setattr(Config, "DATA_DIR", str(tmp_path / "data"))
    yield