def test_equals_2(self): self.assertEqual(insert_dash(123456), '123456')
def test_equals(self): self.assertEqual(insert_dash(454793), '4547-9-3')
def test_equals_4(self): self.assertEqual(insert_dash(24680), '24680')
def test_equals_5(self): self.assertEqual(insert_dash(13579), '1-3-5-7-9')
def test_equals_3(self): self.assertEqual(insert_dash(1003567), '1003-567')