def test_palindrome_empty_str(self):
res = is_palindrome('')
self.assertTrue(res)
def test_palindrome_null(self):
res = is_palindrome(None)
self.assertFalse(res)
def test_palindrome_is_not_palindrome_5(self):
res = is_palindrome('(aba)')
self.assertFalse(res)
def test_palindrome_is_not_palindrome_3(self):
res = is_palindrome('aba ')
self.assertFalse(res)
def test_palindrome_is_palindrome_4(self):
res = is_palindrome('Bb')
self.assertTrue(res)
def test_palindrome_is_palindrome_3(self):
res = is_palindrome('aba')
self.assertTrue(res)
def test_palindrome_not_str(self):
res = is_palindrome({})
self.assertFalse(res)