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make trio.Process.returncode automatically update itself as needed#1514

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oremanj merged 1 commit intopython-trio:masterfrom
njsmith:magic-returncode
May 12, 2020
Merged

make trio.Process.returncode automatically update itself as needed#1514
oremanj merged 1 commit intopython-trio:masterfrom
njsmith:magic-returncode

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@njsmith njsmith commented May 12, 2020

Fixes: #1315

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codecov bot commented May 12, 2020

Codecov Report

Merging #1514 into master will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1514   +/-   ##
=======================================
  Coverage   99.67%   99.67%           
=======================================
  Files         107      107           
  Lines       13254    13264   +10     
  Branches     1006     1006           
=======================================
+ Hits        13211    13221   +10     
  Misses         28       28           
  Partials       15       15           
Impacted Files Coverage Δ
trio/_subprocess.py 100.00% <100.00%> (ø)
trio/tests/test_subprocess.py 100.00% <100.00%> (ø)

@oremanj oremanj merged commit 098246a into python-trio:master May 12, 2020
njsmith added a commit to njsmith/trio that referenced this pull request May 23, 2020
python-triogh-1514 introduced a race condition in this test: now if the process
runs quickly enough, the returncode might have magically become
non-None before we check it.

Example failure: https://travis-ci.org/github/python-trio/trio/jobs/690291915

There are other tests that check the 'p.returncode is None' case (e.g.
test_auto_update_returncode), so we can just delete this.
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Process.__repr__ displays stale information

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