Pytest -从另一个fixture调用fixture

import pytest

@pytest.fixture
def setup_database():
    # 设置数据库连接
    db = connect_to_database()
    # 初始化数据
    initialize_data(db)
    yield db
    # 清理数据
    cleanup_data(db)
    # 关闭数据库连接
    db.close()

@pytest.fixture
def setup_app(setup_database):
    # 创建应用实例
    app = create_app()
    # 绑定数据库连接
    app.db = setup_database
    yield app
    # 清理应用资源
    cleanup_app(app)

def test_my_function(setup_app):
    # 调用fixture返回的应用实例
    app = setup_app
    # 执行测试逻辑
    result = app.my_function()
    # 断言结果
    assert result == expected_result