"""验证 src.log.get_logger 的命名空间和幂等性"""

import logging

import pytest

from src import log as log_mod


@pytest.fixture(autouse=True)
def _reset_initialized():
    """每个测试都从未初始化状态开始，避免 handler 残留串扰其他测试"""
    saved = log_mod._INITIALIZED
    yield
    log_mod._INITIALIZED = saved


def test_logger_has_ashare_namespace():
    logger = log_mod.get_logger("daily")
    assert logger.name == "ashare.daily"


def test_init_is_idempotent():
    """重复调用 _init_root 不应叠加 handler"""
    log_mod._INITIALIZED = False
    root = logging.getLogger("ashare")
    root.handlers.clear()

    log_mod._init_root()
    first_count = len(root.handlers)
    log_mod._init_root()
    second_count = len(root.handlers)

    assert first_count == second_count
    assert first_count >= 1  # 至少有 stdout handler


def test_root_does_not_propagate():
    """ashare logger 不应向 root 冒泡，避免重复输出"""
    log_mod._INITIALIZED = False
    log_mod._init_root()
    root = logging.getLogger("ashare")
    assert root.propagate is False


def test_log_level_from_env(monkeypatch):
    """ASHARE_LOG_LEVEL 环境变量应改变 root 日志级别"""
    monkeypatch.setenv("ASHARE_LOG_LEVEL", "DEBUG")
    log_mod._INITIALIZED = False
    logging.getLogger("ashare").handlers.clear()
    log_mod._init_root()
    assert logging.getLogger("ashare").level == logging.DEBUG


def test_unknown_log_level_falls_back_to_info(monkeypatch):
    monkeypatch.setenv("ASHARE_LOG_LEVEL", "NONSENSE")
    log_mod._INITIALIZED = False
    logging.getLogger("ashare").handlers.clear()
    log_mod._init_root()
    assert logging.getLogger("ashare").level == logging.INFO