adds test for game value in tournament attributes dictionary

Author: meatballs

axelrod/tests/unit/test_tournament.py

@@ -50,7 +50,11 @@ def test_init(self):
             noise=0.2)
         self.assertEqual(len(tournament.players), len(self.players))
         self.assertEqual(
-            tournament.players[0].tournament_attributes['length'], 200)
+            tournament.players[0].tournament_attributes['length'], 200
+        )
+        self.assertIsInstance(
+            tournament.players[0].tournament_attributes['game'], axelrod.Game
+        )
         self.assertEqual(tournament.game.score(('C', 'C')), (3, 3))
         self.assertEqual(tournament.turns, 200)
         self.assertEqual(tournament.repetitions, 10)