单元测试可以使用类undertest的方法进行测试设置吗

import unittest

class MyTestCase(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        print("Setting up class-level resources")

    @classmethod
    def tearDownClass(cls):
        print("Cleaning up class-level resources")

    def setUp(self):
        print("Setting up test environment")

    def tearDown(self):
        print("Cleaning up test environment")

    def test_example(self):
        self.assertEqual(1 + 1, 2)

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

import unittest

def sort_tests_alphabetically(test_case):
    test_case.testMethodPrefix = 'test'
    test_methods = list(test_case._get_test_method_names())
    test_methods.sort()
    test_case._sort_test_methods = lambda: test_methods

class MyTestCase(unittest.TestCase):
    def test_b(self):
        pass

    def test_a(self):
        pass

if __name__ == '__main__':
    suite = unittest.TestLoader().loadTestsFromTestCase(MyTestCase)
    unittest.TestResult().run(sort_tests_alphabetically(suite))