def test_equals(self): self.assertEqual(shifted_diff('coffee', 'eecoff'), 2)
def test_equals_2(self): self.assertEqual(shifted_diff('eecoff', 'coffee'), 4)
def test_equals_7(self): self.assertEqual(shifted_diff('yoyo', 'oyoyoy'), -1)
def test_equals_6(self): self.assertEqual(shifted_diff('dog', 'god'), -1)
def test_equals_5(self): self.assertEqual(shifted_diff('Esham', 'Esham'), 0)
def test_equals_4(self): self.assertEqual(shifted_diff('isn\'t', '\'tisn'), 2)
def test_equals_3(self): self.assertEqual(shifted_diff('moose', 'Moose'), -1)