import unittest
import io
import re
from unittest import mock
import math
import student_X as main #Replace student_X with your filename 
import sys
import io
from io import StringIO
    
    
    
 

class PrintLengthSumTests(unittest.TestCase):
    
    def test_default_case(self):
        function = main.print_length_sum
        

        try:
            docstring = function.__doc__
            docstring = docstring.strip()
        except:
            docstring = ""
        correct = docstring != ""
        message = "docstring is blank."
        self.assertTrue(correct, message) 

        

        with mock.patch('sys.stdout', new=io.StringIO()) as fake_stdout:
            function("bananaleaf!", "cookiebeans")
        output = fake_stdout.getvalue().strip()

        correct = "22"
        feedback = "Doesn't print the correct number for 'bananaleaf!' and 'cookiebeans'"
        self.assertTrue(output == correct, feedback)


        
        with mock.patch('sys.stdout', new=io.StringIO()) as fake_stdout:
            function("I", "see")
        output = fake_stdout.getvalue().strip()

        correct = "4"
        feedback = "Doesn't print the correct number for 'I' and 'see'"
        self.assertTrue(output == correct, feedback)
        
        
if __name__ == "__main__":
    tests = PrintLengthSumTests()
    tests.test_default_case()