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-rw-r--r--Lib/test/audiotests.py5
1 files changed, 3 insertions, 2 deletions
diff --git a/Lib/test/audiotests.py b/Lib/test/audiotests.py
index b7497ce..0ae2242 100644
--- a/Lib/test/audiotests.py
+++ b/Lib/test/audiotests.py
@@ -45,8 +45,9 @@ class AudioTests:
self.assertEqual(params.comptype, comptype)
self.assertEqual(params.compname, compname)
- dump = pickle.dumps(params)
- self.assertEqual(pickle.loads(dump), params)
+ for proto in range(pickle.HIGHEST_PROTOCOL + 1):
+ dump = pickle.dumps(params, proto)
+ self.assertEqual(pickle.loads(dump), params)
class AudioWriteTests(AudioTests):