Clarify cache chest search counts

tests/test_cache_items.py

@@ -1,4 +1,6 @@
+import io
 import unittest
+from contextlib import redirect_stdout
 from munch import Munch
 
 from minecraft.networking.types import BlockFace
@@ -8,6 +10,26 @@ from mosfet.jobs.cache_items import CacheItemsStates
 
 
 class CacheItemsTests(unittest.TestCase):
+    def test_chest_search_log_distinguishes_labeled_and_trapped_counts(self):
+        class FakeWorld:
+            @staticmethod
+            def find_labeled_chests(*_args):
+                return [{} for _ in range(11)]
+
+            @staticmethod
+            def find_blocks_indexed(*_args):
+                return []
+
+        state = CacheItemsStates(Munch(
+            world=FakeWorld(), pos=(0, 64, 0)))
+        output = io.StringIO()
+        with redirect_stdout(output):
+            state.find_trapped_chests()
+
+        self.assertIn(
+            'Found 11 labeled chests; found 0 trapped chests: []',
+            output.getvalue())
+
     def test_successful_labeled_transfer_skips_placing_another_cache_chest(self):
         item_id = items.get_id('stone')
         stack = Munch(present=True, item_id=item_id, item_count=16)