Issue #14288: Serialization support for builtin iterators.
diff --git a/Lib/test/test_tuple.py b/Lib/test/test_tuple.py
index 1464a0e..d928db2 100644
--- a/Lib/test/test_tuple.py
+++ b/Lib/test/test_tuple.py
@@ -1,6 +1,7 @@
from test import support, seq_tests
import gc
+import pickle
class TupleTest(seq_tests.CommonTest):
type2test = tuple
@@ -164,6 +165,34 @@
check(10) # check our checking code
check(1000000)
+ def test_iterator_pickle(self):
+ # Userlist iterators don't support pickling yet since
+ # they are based on generators.
+ data = self.type2test([4, 5, 6, 7])
+ itorg = iter(data)
+ d = pickle.dumps(itorg)
+ it = pickle.loads(d)
+ self.assertEqual(type(itorg), type(it))
+ self.assertEqual(self.type2test(it), self.type2test(data))
+
+ it = pickle.loads(d)
+ next(it)
+ d = pickle.dumps(it)
+ self.assertEqual(self.type2test(it), self.type2test(data)[1:])
+
+ def test_reversed_pickle(self):
+ data = self.type2test([4, 5, 6, 7])
+ itorg = reversed(data)
+ d = pickle.dumps(itorg)
+ it = pickle.loads(d)
+ self.assertEqual(type(itorg), type(it))
+ self.assertEqual(self.type2test(it), self.type2test(reversed(data)))
+
+ it = pickle.loads(d)
+ next(it)
+ d = pickle.dumps(it)
+ self.assertEqual(self.type2test(it), self.type2test(reversed(data))[1:])
+
def test_main():
support.run_unittest(TupleTest)