Issue #22995: Backported additional tests for non-pickleable types.
diff --git a/Lib/test/test_dictviews.py b/Lib/test/test_dictviews.py
index c5d3917..71f1af7 100644
--- a/Lib/test/test_dictviews.py
+++ b/Lib/test/test_dictviews.py
@@ -1,3 +1,5 @@
+import copy
+import pickle
import unittest
import collections
from test import test_support
@@ -186,6 +188,22 @@
self.assertIsInstance(d.viewitems(), collections.Iterable)
self.assertIsInstance(d.viewitems(), collections.Container)
+ def test_copy(self):
+ d = {1: 10, "a": "ABC"}
+ self.assertRaises(TypeError, copy.copy, d.viewkeys())
+ self.assertRaises(TypeError, copy.copy, d.viewvalues())
+ self.assertRaises(TypeError, copy.copy, d.viewitems())
+
+ def test_pickle(self):
+ d = {1: 10, "a": "ABC"}
+ for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+ self.assertRaises((TypeError, pickle.PicklingError),
+ pickle.dumps, d.viewkeys(), proto)
+ self.assertRaises((TypeError, pickle.PicklingError),
+ pickle.dumps, d.viewvalues(), proto)
+ self.assertRaises((TypeError, pickle.PicklingError),
+ pickle.dumps, d.viewitems(), proto)
+
def test_main():
test_support.run_unittest(DictSetTest)