Add unit tests for string_utils

Author: rjLelis

palindrome/test.py

@@ -0,0 +1,10 @@
+import string_utils
+
+assert 'rento' == string_utils.remove_special_char('ren@to'), 'remove_special_char .... FAILED'
+print('remove_special_char .... SUCCESS')
+
+assert 'otaner' == string_utils.reverse('renato'), 'reverse .... FAILED'
+print('reverse .... SUCCESS')
+
+assert string_utils.is_palindrome('ana'), 'is_palindrome .... FAILED'
+print('is_palindrome .... SUCCESS')