4 files changed, 63 insertions, 0 deletions
diff --git a/Lib/test/test_dictviews.py b/Lib/test/test_dictviews.py
index 7b02ea9..c7714cf 100644
--- a/Lib/test/test_dictviews.py
+++ b/Lib/test/test_dictviews.py
@@ -1,3 +1,5 @@
+import copy
+import pickle
 import unittest
 from test import support
 
@@ -198,6 +200,22 @@ class DictSetTest(unittest.TestCase):
         d[42] = d.values()
         self.assertRaises(RuntimeError, repr, d)
 
+    def test_copy(self):
+        d = {1: 10, "a": "ABC"}
+        self.assertRaises(TypeError, copy.copy, d.keys())
+        self.assertRaises(TypeError, copy.copy, d.values())
+        self.assertRaises(TypeError, copy.copy, d.items())
+
+    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.keys(), proto)
+            self.assertRaises((TypeError, pickle.PicklingError),
+                pickle.dumps, d.values(), proto)
+            self.assertRaises((TypeError, pickle.PicklingError),
+                pickle.dumps, d.items(), proto)
+
 
 def test_main():
     support.run_unittest(DictSetTest)
diff --git a/Lib/test/test_generators.py b/Lib/test/test_generators.py
index 5c455cd..604e12d 100644
--- a/Lib/test/test_generators.py
+++ b/Lib/test/test_generators.py
@@ -1,4 +1,6 @@
+import copy
 import gc
+import pickle
 import sys
 import unittest
 import weakref
@@ -70,6 +72,24 @@ class FinalizationTest(unittest.TestCase):
             self.assertEqual(cm.exception.value, 2)
 
 
+class GeneratorTest(unittest.TestCase):
+
+    def test_copy(self):
+        def f():
+            yield 1
+        g = f()
+        with self.assertRaises(TypeError):
+            copy.copy(g)
+
+    def test_pickle(self):
+        def f():
+            yield 1
+        g = f()
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.assertRaises((TypeError, pickle.PicklingError)):
+                pickle.dumps(g, proto)
+
+
 class ExceptionTest(unittest.TestCase):
     # Tests for the issue #23353: check that the currently handled exception
     # is correctly saved/restored in PyEval_EvalFrameEx().
diff --git a/Lib/test/test_xml_etree.py b/Lib/test/test_xml_etree.py
index b87b098..d879245 100644
--- a/Lib/test/test_xml_etree.py
+++ b/Lib/test/test_xml_etree.py
@@ -5,6 +5,7 @@
 # For this purpose, the module-level "ET" symbol is temporarily
 # monkey-patched when running the "test_xml_etree_c" test suite.
 
+import copy
 import html
 import io
 import operator
@@ -2082,6 +2083,19 @@ class ElementIterTest(unittest.TestCase):
         self.assertEqual(self._ilist(doc), all_tags)
         self.assertEqual(self._ilist(doc, '*'), all_tags)
 
+    def test_copy(self):
+        a = ET.Element('a')
+        it = a.iter()
+        with self.assertRaises(TypeError):
+            copy.copy(it)
+
+    def test_pickle(self):
+        a = ET.Element('a')
+        it = a.iter()
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.assertRaises((TypeError, pickle.PicklingError)):
+                pickle.dumps(it, proto)
+
 
 class TreeBuilderTest(unittest.TestCase):
     sample1 = ('<!DOCTYPE html PUBLIC'
diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py
index 53bb2ad..e1575c4 100644
--- a/Lib/test/test_zlib.py
+++ b/Lib/test/test_zlib.py
@@ -1,6 +1,7 @@
 import unittest
 from test import support
 import binascii
+import pickle
 import random
 import sys
 from test.support import bigmemtest, _1G, _4G
@@ -600,6 +601,16 @@ class CompressObjectTestCase(BaseCompressTestCase, unittest.TestCase):
         d.flush()
         self.assertRaises(ValueError, d.copy)
 
+    def test_compresspickle(self):
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.assertRaises((TypeError, pickle.PicklingError)):
+                pickle.dumps(zlib.compressobj(zlib.Z_BEST_COMPRESSION), proto)
+
+    def test_decompresspickle(self):
+        for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+            with self.assertRaises((TypeError, pickle.PicklingError)):
+                pickle.dumps(zlib.decompressobj(), proto)
+
     # Memory use of the following functions takes into account overallocation
 
     @bigmemtest(size=_1G + 1024 * 1024, memuse=3)