Raids wear out the armoury: issued swords and shields break, worst first

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_game.py

@@ -1025,6 +1025,38 @@ class HappeningsTest(unittest.TestCase):
 
 
 
+class WearTest(unittest.TestCase):
+    def setUp(self):
+        self.world = world_with(("fred", "warrior"))
+        self.city = self.world["city"]
+        self.city["population"] = 40.0  # 20 defenders
+
+    def test_wear_follows_how_close_the_fight_was(self):
+        self.assertAlmostEqual(game.wear_share(3), 0.1)
+        self.assertAlmostEqual(game.wear_share(1.5), 0.2)
+        self.assertAlmostEqual(game.wear_share(1), 0.3)
+        self.assertAlmostEqual(game.wear_share(0.5), 0.4)
+
+    def test_only_issued_gear_breaks_worst_first(self):
+        self.city["stockpile"] = {"iron_sword": 10, "copper_sword": 30}
+        rng = random.Random()
+        rng.random = lambda: 0.0
+        broken = game.wear_kit(self.world, 0.4, rng)
+        # 20 defenders take 10 iron and 10 copper; 8 break, all copper.
+        self.assertEqual(broken, {"copper_sword": 8})
+        self.assertEqual(self.city["stockpile"], {"iron_sword": 10, "copper_sword": 22})
+
+    def test_a_won_raid_breaks_some_kit_and_reports_it(self):
+        self.city["stockpile"] = {"copper_sword": 20, "arrows": 100}
+        event = {"strength": 1, "sabotage": 0, "group": "the Red Hand"}
+        game._resolve_raid(self.world, event, T0, random.Random(1))
+        self.assertLess(self.city["stockpile"]["copper_sword"], 20)
+        self.assertEqual(self.city["stockpile"]["arrows"], 70)
+        text = " ".join(event["report"]["lines"])
+        self.assertIn("used 30 arrows", text)
+        self.assertIn("broken in the fighting", text)
+
+
 class FittingTest(unittest.TestCase):
     def setUp(self):
         self.world = world_with(("fred", "artisan"))