def test_task_26_two_empty(self): self.assertEqual(task21_30.task_26(), 'You have not entered a data.')
def test_task_26_two_zeros(self): self.assertEqual(task21_30.task_26(0, 0), 0)
def test_task_26_one_zero(self): self.assertEqual(task21_30.task_26(1, 0), 1)
def test_task_26_negative_and_positive(self): self.assertEqual(task21_30.task_26(1, -2), -1)
def test_task_26_two_negative(self): self.assertEqual(task21_30.task_26(-1, -2), -3)
def test_task_26(self): self.assertEqual(task21_30.task_26(1, 2), 3)