def test_palindrome4(self): "Negative test" assert exercises.palindrome("ac") is False
def test_palindrome2(self): "Tests Empty string" assert exercises.palindrome("") is True
def test_palindrome3(self): "Tests length 1 string" assert exercises.palindrome("a") is True
def test_palindrome1(self): "Tests proper palindrome" assert exercises.palindrome("abba") is True