def assertCount(self, numTests):
        """
        Asserts that the test count is plausible
        """
        self.assertEqual(self.suite.countTestCases(), numTests)
        self.suite(self.reporter)
        self.assertEqual(self.reporter.testsRun, numTests)

        Asserts that the test count is plausible
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/trial/test/test_tests.py