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Issue #26015: Added new tests for pickling iterators of mutable sequences.

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This commit is contained in:
Serhiy Storchaka 2016-03-06 14:12:04 +02:00
commit de128e19e2
6 changed files with 212 additions and 46 deletions
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47
Lib/test/test_deque.py
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@ -640,18 +640,45 @@ class TestBasic(unittest.TestCase):
self.assertEqual(e.maxlen, d.maxlen)
def test_iterator_pickle(self):
data = deque(range(200))
orig = deque(range(200))
data = [i*1.01 for i in orig]
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
it = itorg = iter(data)
d = pickle.dumps(it, proto)
it = pickle.loads(d)
self.assertEqual(type(itorg), type(it))
self.assertEqual(list(it), list(data))
# initial iterator
itorg = iter(orig)
dump = pickle.dumps((itorg, orig), proto)
it, d = pickle.loads(dump)
for i, x in enumerate(data):
d[i] = x
self.assertEqual(type(it), type(itorg))
self.assertEqual(list(it), data)
it = pickle.loads(d)
next(it)
d = pickle.dumps(it, proto)
self.assertEqual(list(it), list(data)[1:])
# running iterator
next(itorg)
dump = pickle.dumps((itorg, orig), proto)
it, d = pickle.loads(dump)
for i, x in enumerate(data):
d[i] = x
self.assertEqual(type(it), type(itorg))
self.assertEqual(list(it), data[1:])
# empty iterator
for i in range(1, len(data)):
next(itorg)
dump = pickle.dumps((itorg, orig), proto)
it, d = pickle.loads(dump)
for i, x in enumerate(data):
d[i] = x
self.assertEqual(type(it), type(itorg))
self.assertEqual(list(it), [])
# exhausted iterator
self.assertRaises(StopIteration, next, itorg)
dump = pickle.dumps((itorg, orig), proto)
it, d = pickle.loads(dump)
for i, x in enumerate(data):
d[i] = x
self.assertEqual(type(it), type(itorg))
self.assertEqual(list(it), [])
def test_deepcopy(self):
mut = [10]