1 files changed, 0 insertions, 12 deletions
diff --git a/tests/util/test_lrucache.py b/tests/util/test_lrucache.py
index 291644eb7d..6578f3411e 100644
--- a/tests/util/test_lrucache.py
+++ b/tests/util/test_lrucache.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 
-from typing import List
 from unittest.mock import Mock
 
 from synapse.util.caches.lrucache import LruCache, setup_expire_lru_cache_entries
@@ -262,17 +261,6 @@ class LruCacheSizedTestCase(unittest.HomeserverTestCase):
         self.assertEquals(cache["key4"], [4])
         self.assertEquals(cache["key5"], [5, 6])
 
-    def test_zero_size_drop_from_cache(self) -> None:
-        """Test that `drop_from_cache` works correctly with 0-sized entries."""
-        cache: LruCache[str, List[int]] = LruCache(5, size_callback=lambda x: 0)
-        cache["key1"] = []
-
-        self.assertEqual(len(cache), 0)
-        cache.cache["key1"].drop_from_cache()
-        self.assertIsNone(
-            cache.pop("key1"), "Cache entry should have been evicted but wasn't"
-        )
-
 
 class TimeEvictionTestCase(unittest.HomeserverTestCase):
     """Test that time based eviction works correctly."""