def test_non_alpha(self):
word = '1221341'
response = '1221'
self.assertEqual(find_substring(word), response)
word = ';fdsksdf;ewc;2'
response = ';fdsksdf;'
self.assertEqual(find_substring(word), response)
def test_capitals(self):
word = 'Abbacdc'
response = 'Abba'
self.assertEqual(find_substring(word), response)
word = 'AABBAAcdfae'
response = 'AABBAA'
self.assertEqual(find_substring(word), response)
def test_short_pal(self):
word = 'abacddaddc'
response = 'cddaddc'
self.assertEqual(find_substring(word), response)
word = 'ababbabacd'
response = 'ababbaba'
self.assertEqual(find_substring(word), response)
def test_three_letters(
self): # I don't know why this test failed on the submission
word = 'abb'
response = 'bb'
self.assertEqual(find_substring(word), response)
word = 'ccd'
response = 'cc'
self.assertEqual(find_substring(word), response)
def test_even_odd(self):
# test that the solution works on even and odd palendroms
word = 'sdalbablakwo'
response = 'albabla'
self.assertEqual(find_substring(word), response)
word = 'sadwecceoin'
response = 'ecce'
self.assertEqual(find_substring(word), response)
def test_no_palindrome(self):
word = 'abcdefg'
response = ['a', 'b', 'c', 'd', 'e', 'f', 'g']
self.assertIn(find_substring(word), response)
word = 'a'
response = 'a'
self.assertEqual(find_substring(word), response)
word = 'ac'
response = ['a', 'c']
self.assertIn(find_substring(word), response)
def test_base_case(self):
word = 'abbaccdda'
response = 'abba'
self.assertEqual(find_substring(word), response)
def test_empty_string(self):
word = ''
self.assertEqual(find_substring(word), '')
def test_short_string(self):
word = 'aa'
self.assertEqual(find_substring(word), 'aa')
def test_long_string(self):
word = 'asdlklkboiwasdlkjvbiaowelkjadscbaijebuilakmniuewlbjakwecuilbonajkldshafjlciewsablkwebsuicbniusaebacuiwejbkgfmdceauwibklsdfhaisdufnkjbaueiysblvjsdnclakjwefdfbjndlciueaweuibvzsjbnxcmnobaliuesglincsdwnavjsdnpqWMNVRAWUBCDSnaoisdmvivpsdfmcaeslizubajsdlabcuioasdkjnvueaskjbviuesablkjsdncacmalsdjnaifsdbfiuoebsfwljwanergti;odslkanfajsdhbcyufavhpasgfjlaksdmicubalsedjkbegaosidjvsklasdfnqiejBUUIWVNIFABklasdjklfnwoeioqwertyuiopasdfghjklzxcvbnmmmqwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnmqwertyuiopasdfghjklzxcvbnmmnbvcxzasdlklkboiwasdlkjvbiaowelkjadscbaijebuilakmniuewlbjakwecuilbonajkldshafjlciewsablkwebsuicbniusaebacuiwejbkgfmdceauwibklsdfhaisdufnkjbaueiysblvjsdnclakjwefdfbjndlciueaweuibvzsjbnxcmnobaliuesglincsdwnavjsdnpqWMNVRAWUBCDSnaoisdmvivpsdfmcaeslizubajsdlabcuioasdkjnvueaskjbviuesablkjsdncacmalsdjnaifsdbfiuoebsfwljwanergti;odslkanfajsdhbcyufavhpasgfjlaksdmicubalsedjkbegaosidjvsklasdfnqiejBUUIWVNIFABklasdjklfnwoeioqwertyuiopasdfghjkl'
response = 'zxcvbnmmnbvcxz'
self.assertEqual(find_substring(word), response)
def test_pal_in_pal(self):
word = 'ffwcbadabcdde'
response = 'cbadabc'
self.assertEqual(find_substring(word), response)