class MyTestCase(unittest.TestCase): def setUp(self) -> None: seed(5) self.testData = randint(0, 10, 20) self.statistics = Statistics() def test_instantiate_calculator(self): self.assertIsInstance(self.statistics, Statistics) def test_mean_calculator(self): mean = self.statistics.mean(self.testData) self.assertEqual(mean, 4.25)