def test_1(self): actual = lengthOfLongestSubstring("abcabcbb") expected = 3 self.assertEqual(actual, expected)
def test_4(self): actual = lengthOfLongestSubstring("pwwkew") expected = 3 self.assertEqual(actual, expected)
def test_6(self): actual = lengthOfLongestSubstring("abba") expected = 2 self.assertEqual(actual, expected)
def test_2(self): actual = lengthOfLongestSubstring(" ") expected = 1 self.assertEqual(actual, expected)