def test_case_1(self):
     self.assertEqual(program.longestPalindromicSubstring("a"), "a")
 def test_case_10(self):
     self.assertEqual(
         program.longestPalindromicSubstring(
             "zzzzzzz2345abbbba5432zzbbababa"), "zz2345abbbba5432zz")
 def test_case_12(self):
     self.assertEqual(
         program.longestPalindromicSubstring("z234a5abbba54a32z"),
         "5abbba5")
 def test_case_9(self):
     self.assertEqual(program.longestPalindromicSubstring("abcdefggfedcba"),
                      "abcdefggfedcba")
 def test_case_5(self):
     self.assertEqual(program.longestPalindromicSubstring("abaxyzzyxf"),
                      "xyzzyx")
 def test_case_4(self):
     self.assertEqual(
         program.longestPalindromicSubstring("abccbait's highnoon"),
         "abccba")
 def test_case_3(self):
     self.assertEqual(
         program.longestPalindromicSubstring("noon high it is"), "noon")
 def test_case_2(self):
     self.assertEqual(program.longestPalindromicSubstring("it's highnoon"),
                      "noon")