Experimental parser: more tests, better key logic

tools/lexer_generator/transition_key_test.py

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-# Watchlist Rules
-# Refer: http://dev.chromium.org/developers/contributing-code/watchlists
+import unittest
+from transition_keys import TransitionKey
 
-# IMPORTANT: The regular expression filepath is tested against each path using
-# re.search, so it is not usually necessary to add .*.
+class TransitionKeyTestCase(unittest.TestCase):
 
-{
-  'WATCHLIST_DEFINITIONS': {
-    'public_api': {
-      'filepath': 'include/',
-    },
-  },
+  __equal_pairs = [
+    (TransitionKey.epsilon(), TransitionKey.epsilon()),
+    (TransitionKey.any(), TransitionKey.any()),
+    (TransitionKey.single_char('a'), TransitionKey.single_char('a')),
+  ]
 
-  'WATCHLISTS': {
-    'public_api': [
-      'phajdan.jr@chromium.org',
-    ],
-  },
-}
+  def test_eq(self):
+    for (left, right) in self.__equal_pairs:
+      self.assertEqual(left, right)
+
+  def test_hash(self):
+    for (left, right) in self.__equal_pairs:
+      self.assertEqual(hash(left), hash(right))
+
+if __name__ == '__main__':
+    unittest.main()