def METHOD_NAME(self):
    x = ModelOutputTest(a=30, b=10)
    self.assertEqual(x[0], 30)
    self.assertEqual(x[1], 10)
    self.assertEqual(x[:2], (30, 10))
    self.assertEqual(x[:], (30, 10))
    x = ModelOutputTest(a=30, c=10)
    self.assertEqual(x[0], 30)
    self.assertEqual(x[1], 10)
    self.assertEqual(x[:2], (30, 10))
    self.assertEqual(x[:], (30, 10))