"""Tests for the logging setup module."""

import logging

from src.log import setup_logging


class TestSetupLogging:
    def test_sets_root_level(self):
        setup_logging("DEBUG")
        root = logging.getLogger()
        assert root.level == logging.DEBUG

    def test_adds_handler(self):
        root = logging.getLogger()
        root.handlers.clear()
        setup_logging("INFO")
        assert len(root.handlers) >= 1

    def test_no_duplicate_handlers(self):
        root = logging.getLogger()
        root.handlers.clear()
        setup_logging("INFO")
        count = len(root.handlers)
        setup_logging("INFO")
        assert len(root.handlers) == count

    def test_invalid_level_defaults_to_info(self):
        setup_logging("NONEXISTENT")
        root = logging.getLogger()
        assert root.level == logging.INFO