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add test
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hauntsaninja committed Mar 11, 2023
commit 8777d294c16fc256544b68122dc96b2624ae8471
4 changes: 4 additions & 0 deletions Lib/test/test_collections.py
Original file line number Diff line number Diff line change
Expand Up @@ -1956,6 +1956,10 @@ def test_ByteString(self):
with self.assertWarns(DeprecationWarning):
class X(ByteString): pass

with self.assertWarns(DeprecationWarning):
# No metaclass conflict
class Z(ByteString, Awaitable): pass

def test_MutableSequence(self):
for sample in [tuple, str, bytes]:
self.assertNotIsInstance(sample(), MutableSequence)
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