Fix RevisedDowning

Author: gaffney2010

axelrod/strategies/revised_downing.py

@@ -52,7 +52,7 @@ def strategy(self, opponent: Player) -> Action:
 
         # Update various counts
         if round_number > 2:
-            if self.history[-1] == D:
+            if self.history[-2] == D:
                 if opponent.history[-1] == C:
                     self.nice2 += 1
                 self.total_D += 1

axelrod/tests/strategies/test_revised_downing.py

@@ -30,11 +30,11 @@ def test_strategy(self):
         self.versus_test(opponent, expected_actions=actions)
 
         opponent = axl.MockPlayer(actions=[D, D, C])
-        actions = [(C, D), (C, D), (D, C), (D, D)]
+        actions = [(C, D), (C, D), (D, C), (C, D)]
         self.versus_test(opponent, expected_actions=actions)
 
         opponent = axl.MockPlayer(actions=[C, C, D, D, C, C])
-        actions = [(C, C), (C, C), (C, D), (C, D), (D, C), (D, C), (D, C)]
+        actions = [(C, C), (C, C), (C, D), (C, D), (D, C), (C, C), (D, C)]
         self.versus_test(opponent, expected_actions=actions)
 
         opponent = axl.MockPlayer(actions=[C, C, C, C, D, D])