tweaks

Author: crusaderky

doc/source/changelog.rst

@@ -15,10 +15,12 @@ Changelog
 - ``LMDB`` now uses memory-mapped I/O on MacOSX and is usable on Windows.
   (:pr:`78`) `Guido Imperiale`_
 - The library is now partially thread-safe.
-  (:pr:`82`, :pr:`90`) `Guido Imperiale`_
+  (:pr:`82`, :pr:`90`, :pr:`93`) `Guido Imperiale`_
 - :class:`LRU` and :class:`Buffer` now support delayed eviction.
   New objects :class:`Accumulator` and :class:`InsertionSortedSet`.
   (:pr:`87`) `Guido Imperiale`_
+- All mappings now return proper KeysView, ItemsView, and ValuesView objects from their
+  keys(), items(), and values() methods (:pr:`93`) `Guido Imperiale`_
 
 
 2.2.0 - 2022-04-28

zict/tests/utils_test.py

@@ -1,6 +1,6 @@
 import random
 import string
-from collections.abc import MutableMapping
+from collections.abc import ItemsView, KeysView, MutableMapping, ValuesView
 
 import pytest
 
@@ -35,6 +35,9 @@ def check_items(z, expected_items):
     assert list(z) == [k for k, v in items]
 
     # ItemsView, KeysView, ValuesView.__contains__()
+    assert isinstance(z.keys(), KeysView)
+    assert isinstance(z.values(), ValuesView)
+    assert isinstance(z.items(), ItemsView)
     assert items[0] in z.items()
     assert items[0][0] in z.keys()
     assert items[0][0] in z