def test_equals_2(self):
     self.assertEqual(spin_words('Hey fellow warriors'),
                      'Hey wollef sroirraw')
 def test_equals_4(self):
     self.assertEqual(spin_words('This is another test'),
                      'This is rehtona test')
 def test_equals(self):
     self.assertEqual(spin_words('Welcome'), 'emocleW')
 def test_equals_3(self):
     self.assertEqual(spin_words('This is a test'), 'This is a test')