From 4a216308d8b0295dd63733a4f6d661c39ef017bb Mon Sep 17 00:00:00 2001
From: Matt Wala <wala1@illinois.edu>
Date: Sat, 23 Sep 2017 17:42:43 -0500
Subject: [PATCH] check cache collision on update in WriteOncePersistentDict

---
 test/test_persistent_dict.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/test/test_persistent_dict.py b/test/test_persistent_dict.py
index 61338d2..bea8808 100644
--- a/test/test_persistent_dict.py
+++ b/test/test_persistent_dict.py
@@ -261,11 +261,15 @@ def test_write_once_persistent_dict_cache_collisions():
         key2 = PDictTestingKeyOrValue(2, hash_key=0)
         pdict[key1] = 1
 
+        # check lookup        
         with pytest.warns(UserWarning):
-            # check lookup
             with pytest.raises(NoSuchEntryError):
                 pdict[key2]
 
+        # check update
+        with pytest.raises(ReadOnlyEntryError):
+            pdict[key2] = 1
+
     finally:
         shutil.rmtree(tmpdir)
 
-- 
GitLab