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Issue #20804: The unittest.mock.sentinel attributes now preserve their

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identity when they are copied or pickled.
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Serhiy Storchaka 2017-01-11 20:13:03 +02:00
parent d4f5001bac
commit d9c956fb23
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Doc/library/unittest.mock.rst
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@ -1831,6 +1831,10 @@ sentinel
the same attribute will always return the same object. The objects
returned have a sensible repr so that test failure messages are readable.
.. versionchanged:: 3.7
The ``sentinel`` attributes now preserve their identity when they are
:mod:`copied <copy>` or :mod:`pickled <pickle>`.
Sometimes when testing you need to test that a specific object is passed as an
argument to another method, or returned. It can be common to create named
sentinel objects to test this. :data:`sentinel` provides a convenient way of