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Python Python Testing Be Assertive assertTrue and assertFalse

Challenge Task 2 of 2

Challenge Task 2 of 2

Great! Now let's use the reverse of assertTrue which is assertFalse. Fill out test_bad_palindrome with the assertFalse assertion and a bad palindrome.

tests.py
import unittest

from string_fun import is_palindrome

class PalindromeTestCase(unittest.TestCase): 
      def test_bad_palindrome(self): 
          self.assertFalse(is_palindrome('tacocat'))
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]

5 Answers

you have to pass self as an attribute
def test_bad_palindrome(self): self.assertFalse(is_palindrome(self))

Hi Sympathy,

For assertFalse, we are asserting that the value passed into is_palindrome is, indeed, not a palindrome. For example, calling is_palindrome("taco") will return false.

Also, you need to keep the code for test_good_palindrome.

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

  def test_bad_palindrome(self):
    self.assertFalse() # fix this line

def test_bad_palindrome(self): self.assertFalse(is_palindrome("dishonesty"))

this worked for me

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

def test_bad_palindrome(self): self.assertFalse()

def test_bad_palindrome(self):