"""Тест выбора векторного бэкенда по настройке VECTOR_BACKEND."""

from app import vector_store
from app.config import settings


def test_default_backend_is_faiss(monkeypatch):
    monkeypatch.setattr(settings, "VECTOR_BACKEND", "faiss")
    from app.faiss_manager import FAISSManager

    assert vector_store.get_backend() is FAISSManager


def test_qdrant_backend_selected(monkeypatch):
    monkeypatch.setattr(settings, "VECTOR_BACKEND", "qdrant")
    from app.qdrant_manager import QdrantManager

    assert vector_store.get_backend() is QdrantManager


def test_unknown_backend_falls_back_to_faiss(monkeypatch):
    monkeypatch.setattr(settings, "VECTOR_BACKEND", "что-то не то")
    from app.faiss_manager import FAISSManager

    assert vector_store.get_backend() is FAISSManager