"""Tests for DealFlow AI configuration."""
from __future__ import annotations

import os
import sys
from pathlib import Path

import pytest

sys.path.insert(0, str(Path(__file__).parent.parent))


class TestAppConfig:
    def test_defaults(self, monkeypatch):
        monkeypatch.delenv("LLM_BACKEND", raising=False)
        monkeypatch.delenv("VLLM_BASE_URL", raising=False)
        from src.config import AppConfig
        config = AppConfig()
        assert config.llm_backend.value == "vllm"
        assert "localhost" in config.vllm_base_url

    def test_backend_env_override(self, monkeypatch):
        monkeypatch.setenv("LLM_BACKEND", "hf")
        from importlib import reload
        import src.config as cfg_module
        reload(cfg_module)
        config = cfg_module.AppConfig()
        assert config.llm_backend.value == "hf"

    def test_serper_key_from_env(self, monkeypatch):
        monkeypatch.setenv("SERPER_API_KEY", "test-key-123")
        from src.config import AppConfig
        config = AppConfig()
        assert config.serper_api_key == "test-key-123"