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Python Python Testing Be Assertive assertTrue and assertFalse

Posted by Leo Pinard
Leo Pinard
276 Points

I don't see why my assertTrue is not working.

I must be missing something as it seems that this test should be correct.

tests.py 
import unittest

from string_fun import is_palindrome


class PalindromeTestCase(unittest.TestCase):
    def test_good_palindrome(self):
        self.assertTrue(is_palindrome("tactocat"))

    def test_bad_palindrome(self):
        pass

if __name__ == '__main__':
    unittest.main()
string_fun.py 
def is_palindrome(yarn):
    """Return whether or not a string is a palindrome.

    A palindrome is a word/phrase that's the same in
    both directions.
    """
    return yarn == yarn[::-1]

1 Answer

Andreas cormack
.a{fill-rule:evenodd;}techdegree seal-36
Andreas cormack
Python Web Development Techdegree Graduate 33,011 Points

Hi Leo

you have a typo in the argument passed to the is_palindrome function. it should be tacocat not tactocat.

import unittest

from string_fun import is_palindrome


class PalindromeTestCase(unittest.TestCase):
    def test_good_palindrome(self):
        self.assertTrue(is_palindrome("tactocat"))# should be tacocat

    def test_bad_palindrome(self):
        pass

if __name__ == '__main__':
    unittest.main()
Leo Pinard
Leo Pinard
276 Points

Thank you! It was a silly oversight.