Experimental parser: cleanup after grammar refactor

tools/lexer_generator/action_test.py

 # Copyright 2013 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 25 matching lines @@
   for name, automata in RuleProcessor.parse(rules).automata_iter():
     rule_map[name] = automata
   return rule_map
 
 class ActionTestCase(unittest.TestCase):
 
     def __verify_last_action(self, automata, string, expected_code):
       expected_code = (expected_code, None)
       for automaton in [automata.dfa(), automata.minimal_dfa()]:
         actions = list(automaton.collect_actions(string))
-        self.assertEqual(actions[-1], Action('TERMINATE'))
+        self.assertEqual(actions[-1], Dfa.terminal_action())
         self.assertEqual(actions[-2].match_action(), expected_code)
 
     def test_action_precedence(self):
       rules = '''<<default>>
                  "key" <|KEYWORD|>
                  /[a-z]+/ <|ID|>'''
       automata_for_conditions = process_rules(rules)
       self.assertEqual(len(automata_for_conditions), 1)
       self.assertTrue('default' in automata_for_conditions)
       automata = automata_for_conditions['default']
@@ skipping 10 matching lines @@
                  "key" <|KEYWORD|>'''
       automata_for_conditions = process_rules(rules)
       self.assertEqual(len(automata_for_conditions), 1)
       self.assertTrue('default' in automata_for_conditions)
       automata = automata_for_conditions['default']
 
       # The keyword is not recognized because of the rule preference order (ID
       # is preferred over KEYWORD).
       self.__verify_last_action(automata, 'foo', 'ID')
       self.__verify_last_action(automata, 'key', 'ID')