commented out unused code

to make the coverage 100%, codes that never run are
commented out

Author: yohm

axelrod/strategies/grudger.py

@@ -409,14 +409,14 @@ def strategy(self, opponent: Player) -> Action:
             return C
         if hist == [[D, D], [D, C], [C, C]]:
             return C
-        if hist == [[D, C], [C, C], [C, C]]:
-            return C
+        # if hist == [[D, C], [C, C], [C, C]]:  # duplicate of Rule P
+        #     return C
         if hist == [[D, D], [D, D], [C, D]]:  # Rule: R2
             return C
         if hist == [[D, D], [C, D], [C, C]]:
             return C
-        if hist == [[C, D], [C, C], [C, C]]:
-            return C
+        # if hist == [[C, D], [C, C], [C, C]]:  # duplicate of Rule A
+        #     return C
         if hist == [[D, D], [D, D], [C, C]]:  # Rule: R3
             return C
         if hist == [[D, D], [C, C], [C, C]]:

axelrod/tests/strategies/test_grudger.py

@@ -382,15 +382,17 @@ def test_strategy(self):
         actions = [(C, C)] * 10 + [(C, D)] + [(D, D)]  + [(D,C)] * 9
         self.versus_test(opponent, expected_actions=actions)
 
+    def test_prescriptions(self):
         # accept punishment when making a mistake
         self.assert_prescription([C,C,D], [C,C,C], C)
         self.assert_prescription([C,D,C], [C,C,D], C)
         self.assert_prescription([D,C,C], [C,D,C], C)
         self.assert_prescription([C,C,C], [D,C,C], C)
 
-        # recover the cooperation
+        # recover the cooperation from mutual defection
         self.assert_prescription([D,D,C], [D,D,D], C)
         self.assert_prescription([D,C,C], [D,D,C], C)
+        self.assert_prescription([C,C,C], [D,C,C], C)
 
         self.assert_prescription([D,D,D], [D,D,C], C)
         self.assert_prescription([D,D,C], [D,C,C], C)