Added compliance checks for invalid unicode characters in JSON literal

Author: springcomp

jmespath.test

@@ -236,6 +236,7 @@ def _consume_quoted_identifier(self):
     def _consume_raw_string_literal(self):
         start = self._position
         lexeme = self._consume_until("'").replace("\\'", "'")
+
         token_len = self._position - start
         return {'type': 'literal', 'value': lexeme,
                 'start': start, 'end': token_len}

jmespath/lexer.py

@@ -206,6 +206,9 @@ def test_arithmetic_expression(self):
             ]
         )
 
+    def test_invalid_character_in_json_literal(self):
+        with self.assertRaises(LexerError) as e:
+            tokens = list(self.lexer.tokenize(u'`0\u2028`'))
 
 if __name__ == '__main__':
     unittest.main()