def test_good(self): self.assertEqual(volume.vol(5), 125)
def test_vol3(self): result = volume.vol('a','b','c') self.assertEqual(result,"6000")
def test_neg(self): self.assertLessEqual(volume.vol(0), volume.vol(-5))
def test_vol_2(self): self.assertEqual(volume.vol(-2), 'Positive numbers only')
def test_vol_1(self): self.assertEqual(volume.vol(2), 8)
def test_vol_4(self): self.assertEqual(volume.vol('hi'), 'Numbers only')
def test_vol_3(self): self.assertEqual(volume.vol(2.5), 15.625)