def setUp(self):
        """
        Create a couple instances of C{MyTestCase}, each for the same test
        method, to be used in the test methods of this class.
        """
        self.first = self.MyTestCase('test_1')
        self.second = self.MyTestCase('test_1')

        Create a couple instances of C{MyTestCase}, each for the same test
        method, to be used in the test methods of this class.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/trial/test/test_testcase.py