如何为只使用logger语句的except块编写python单元测试用例

import unittest
import logging

def divide(a, b):
    try:
        result = a / b
    except ZeroDivisionError:
        logging.error("除数不能为零")
    except Exception as e:
        logging.error("发生了异常：%s", str(e))

class TestLoggerExcept(unittest.TestCase):
    def test_divide_zero(self):
        with self.assertLogs(level='ERROR') as cm:
            divide(10, 0)
            self.assertEqual(cm.output, ['ERROR:root:除数不能为零'])

    def test_divide_exception(self):
        with self.assertLogs(level='ERROR') as cm:
            divide(10, 'a')
            self.assertEqual(cm.output, ['ERROR:root:发生了异常：unsupported operand type(s) for /: \'int\' and \'str\''])

if __name__ == '__main__':
    unittest.main()