1 files changed, 20 insertions, 1 deletions
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index 4ed0e24165..9289afe072 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -3,6 +3,7 @@
 import unittest, doctest
 from test import support
 from collections import namedtuple
+import pickle, copy
 from collections import Hashable, Iterable, Iterator
 from collections import Sized, Container, Callable
 from collections import Set, MutableSet
@@ -10,6 +11,7 @@ from collections import Mapping, MutableMapping
 from collections import Sequence, MutableSequence
 from collections import ByteString
 
+TestNT = namedtuple('TestNT', 'x y z')    # type used for pickle tests
 
 class TestNamedTuple(unittest.TestCase):
 
@@ -111,7 +113,7 @@ class TestNamedTuple(unittest.TestCase):
         self.assertEqual(Dot(1)._replace(d=999), (999,))
         self.assertEqual(Dot(1)._fields, ('d',))
 
-        # n = 10000
+        # n = 5000
         n = 254 # SyntaxError: more than 255 arguments:
         import string, random
         names = list(set(''.join([random.choice(string.ascii_letters)
@@ -134,6 +136,23 @@ class TestNamedTuple(unittest.TestCase):
         self.assertEqual(b2, tuple(b2_expected))
         self.assertEqual(b._fields, tuple(names))
 
+    def test_pickle(self):
+        p = TestNT(x=10, y=20, z=30)
+        for module in (pickle,):
+            loads = getattr(module, 'loads')
+            dumps = getattr(module, 'dumps')
+            for protocol in -1, 0, 1, 2:
+                q = loads(dumps(p, protocol))
+                self.assertEqual(p, q)
+                self.assertEqual(p._fields, q._fields)
+
+    def test_copy(self):
+        p = TestNT(x=10, y=20, z=30)
+        for copier in copy.copy, copy.deepcopy:
+            q = copier(p)
+            self.assertEqual(p, q)
+            self.assertEqual(p._fields, q._fields)
+
 class TestOneTrickPonyABCs(unittest.TestCase):
 
     def test_Hashable(self):