def test_case_insensitive(self):
# arrange
text = "aaaAaA"
# act
result = is_valid_palindrome(text)
# assert
self.assertTrue(result)
def test_empty_string(self):
# arrange
text = ""
# act
result = is_valid_palindrome(text)
# assert
self.assertTrue(result)
def test_handles_spaces(self):
# arrange
text = " a bcdc b a "
# act
result = is_valid_palindrome(text)
# assert
self.assertTrue(result)
def test_handles_punctuation(self):
# arrange
text = "b$c d#, c***b"
# act
result = is_valid_palindrome(text)
# assert
self.assertTrue(text)
def test_one_word_not_palindrome(self):
# arrange
text = "abcdba"
# act
result = is_valid_palindrome(text)
# assert
self.assertFalse(result)