import pytest
from config.settings import load_settings


def test_load_settings_success():
    """测试成功加载配置文件"""
    settings = load_settings("tests/fixtures/test_config.yaml")
    assert settings.database.active == "sql_server"
    assert settings.database.sql_server.port == 1433
    assert settings.database.sql_server.host == "localhost"
    assert settings.database.sql_server.database == "TestDB"


def test_load_settings_file_not_found():
    """测试配置文件不存在时抛出异常"""
    with pytest.raises(FileNotFoundError):
        load_settings("nonexistent.yaml")


def test_database_url_property():
    """测试 database_url 属性生成"""
    settings = load_settings("tests/fixtures/test_config.yaml")
    url = settings.database_url
    assert "mssql+pyodbc" in str(url)
    assert "test_user" in str(url)
    assert "TestDB" in str(url)


def test_postgresql_database_url_property():
    """测试 PostgreSQL database_url 属性生成"""
    settings = load_settings("tests/fixtures/test_config.yaml")
    settings.database.active = "postgresql"
    url = settings.database_url
    assert url.drivername == "postgresql+psycopg"
    assert url.host == "localhost"
    assert url.port == 5432
    assert url.database == "TestDB"