def testEqual1(self): self.assertEqual(programacion_1.n_factorial(0), 1)
def testIsNone1(self): self.assertIsNone(programacion_1.n_factorial(0))
def testEqual1(self): self.assertEqual(programacion_1.n_factorial(0), 1)
def testIsNone1(self): self.assertIsNone(programacion_1.n_factorial(0))