def test_numbers_as_input(self):
self.assertFalse(is_palindrome(u"123123023"))
def test_empty_string(self):
self.assertFalse(is_palindrome(u""))
def test_single_letter(self):
self.assertTrue(is_palindrome(u"A"))
def test_mixed_casing_input(self):
self.assertTrue(is_palindrome(u"Air An aRIa."))
def test_punctuation_in_input(self):
self.assertTrue(is_palindrome(u"A man, a plan, a cat, a ham, a yak, a yam, a hat, " "a canal-Panama!"))
def test_not_unicode_2(self):
with self.assertRaises(AssertionError):
is_palindrome(2)
def test_not_unicode(self):
with self.assertRaises(AssertionError):
is_palindrome("A but tuba.")
