New submission from Jason Curtis:
When a sentinel object from unittest.mock.sentinel is passed through a
multiprocessing.Pool.map, I expect it to still be comparable.
As a user, I'd like to be able to write a unit test using sentinels on my
unparallelized code, and then see that the test still passes after I
parallelize the code using multiprocessing, so that I can make use of sentinels
in regression testing.
Example:
```
from unittest import mock
import multiprocessing
def identity(x):
return x
with multiprocessing.Pool() as pool:
multiprocessed = list(pool.map(identity, [mock.sentinel.foo]))
assert identity(mock.sentinel.foo) == mock.sentinel.foo # Passes
assert multiprocessed[0] == mock.sentinel.foo # Fails
```
----------
components: Library (Lib)
messages: 285146
nosy: Jason Curtis
priority: normal
severity: normal
status: open
title: incompatible: unittest.mock.sentinel and multiprocessing.Pool.map()
type: behavior
versions: Python 3.4
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Python tracker <[email protected]>
<http://bugs.python.org/issue29229>
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