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-rw-r--r--Lib/test/test_sndhdr.py5
1 files changed, 3 insertions, 2 deletions
diff --git a/Lib/test/test_sndhdr.py b/Lib/test/test_sndhdr.py
index 361f70f..426417c 100644
--- a/Lib/test/test_sndhdr.py
+++ b/Lib/test/test_sndhdr.py
@@ -28,8 +28,9 @@ class TestFormats(unittest.TestCase):
def test_pickleable(self):
filename = findfile('sndhdr.aifc', subdir="sndhdrdata")
what = sndhdr.what(filename)
- dump = pickle.dumps(what)
- self.assertEqual(pickle.loads(dump), what)
+ for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+ dump = pickle.dumps(what, proto)
+ self.assertEqual(pickle.loads(dump), what)
if __name__ == '__main__':