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Fix test asserts due to leftover test subprocesses #1161

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merged 2 commits into from Oct 28, 2017

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adpag
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@adpag adpag commented Oct 28, 2017

Two cases where a test subprocess is not cleaned up after the test, leading to asserts in following tests.

Adrian Page added 2 commits October 27, 2017 14:16
The leftover child process was triggering an assert in a later test:

======================================================================
FAIL: psutil.tests.test_connections.TestConnectedSocketPairs.test_combos
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/ade/projects/psutil/psutil/tests/__init__.py", line 792, in wrapper
    return fun(*args, **kwargs)
  File "/home/ade/projects/psutil/psutil/tests/test_connections.py", line 330, in test_combos
    self.assertEqual(len(cons), 1)
AssertionError: 0 != 1
Fixes memory leak test asserts.

psutil/tests/test_memory_leaks.py:334:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
psutil/tests/test_memory_leaks.py:125: in execute
    self.assertEqual(thisproc.children(), [])
E   AssertionError: Lists differ: [<psutil.Process(pid=908, name... != []
E
E   First list contains 10 additional elements.
E   First extra element 0:
E   <psutil.Process(pid=908, name='python2.7') at 34513317008>
E
E   + []
E   - [<psutil.Process(pid=908, name='python2.7') at 34513317008>,
E   -  <psutil.Process(pid=909, name='python2.7') at 34459063760>,
E   -  <psutil.Process(pid=910, name='python2.7') at 34459064464>,
E   -  <psutil.Process(pid=911, name='python2.7') at 34513749456>,
E   -  <psutil.Process(pid=912, name='python2.7') at 34513749520>,
E   -  <psutil.Process(pid=913, name='python2.7') at 34513751184>,
E   -  <psutil.Process(pid=914, name='python2.7') at 34513751120>,
E   -  <psutil.Process(pid=915, name='python2.7') at 34513751312>,
E   -  <psutil.Process(pid=916, name='python2.7') at 34513751376>,
E   -  <psutil.Process(pid=917, name='python2.7') at 34513748176>]
@giampaolo
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The missing reap_children is interesting. I get occasional failures on both Travis and Appveyor which I think may be related to this. Thanks.

@giampaolo giampaolo merged commit 5c51581 into giampaolo:master Oct 28, 2017
giampaolo added a commit that referenced this pull request Oct 28, 2017
@adpag adpag deleted the reap_children branch November 7, 2017 23:05
nlevitt added a commit to nlevitt/psutil that referenced this pull request Apr 9, 2019
* 'pslisten' of github.com:nlevitt/psutil: (922 commits)
  Update INSTALL.rst
  Pass python_requires argument to setuptools (giampaolo#1208)
  giampaolo#1152: fix doc to mention CLI command necessary to enable disk_io_counters() on win
  pre release
  pre release
  pre release
  pre-release
  fix giampaolo#1201: document that timeout kwarg is expressed in seconds
  Add mount points to disk_partitions() in Windows (giampaolo#775) (giampaolo#1192)
  add test for cpu_affinity
  what a stupid bug! (giampaolo#1190)
  update doc
  pre release
  pre-release; also get rid of PSUTIL_DEBUG doc instructions (it's kinda useless for the user after all)
  Use FutureWarning instead of DeprecationWarning (giampaolo#1188)
  fix test
  refactor environ() test
  Fix OSX pid 0 bug (giampaolo#1187)
  change assert in test
  refactor Process.__repr__
  Faster Process.children(recursive=True) (giampaolo#1186)
  Speedup Process.children()  (giampaolo#1185)
  update doc
  update HISTORY
  fix giampaolo#1179 / linux / cmdline: handle processes erroneously overwriting /proc/pid/cmdline by using spaces instead of null bytes as args separator
  set x bit to test_aix.py
  fix giampaolo#1181: raise AD if task_for_pid() fails with 5 and errno == ENOENT
  fix posix failure
  Arguments for NoSuchProcess and AccessDenied for the C ext (giampaolo#1180)
  fix travis failure https://travis-ci.org/giampaolo/psutil/jobs/306424509
  be smarter in searching python exe
  do not test platf specific modules on wheelhouse
  try to fix travis failure
  fix travis failures
  try to use PYTHON_EXE instead of sys.executable
  giampaolo#1177: give credits to @wiggin15
  OSX: implement sensors_battery (giampaolo#1177)
  improve error msg for old windows systems giampaolo#811
  add debug messages
  do not mention apt-get as method of installation as it's not recommended
  syntax highlight in doc files
  syntax highlight in doc files
  fix doc indentation
  1173 debug mode (giampaolo#1176)
  code style
  update MANIFEST
  giampaolo#1174: use TimeoutExpired in wait_pid()
  sort imports by name
  Move exceptions to separate file (giampaolo#1174)
  appveyor: enable python warnings when running tests
  refactor winmake.py
  use a C global variable to figure out whether we're in testing mode
  fix unicode err
  define a setup() function which is called on import by all C modules
  move PyUnicode compt fun definition up in the file
  rename C func
  re-enable test on appveyor; remove unused C code
  refactor PSUTIL_TESTING C APIs
  inspect PSUTIL_TESTING env var from C again
  giampaolo#1152: (DeviceIOControl), skip disk on ERROR_INVALID_FUNCTION and ERROR_NOT_SUPPORTED
  giampaolo#1152 / win / disk_io_counters(): DeviceIOControl errors were ignored; che return value and retry call on ERROR_INSUFFICIENT_BUFFER
  upgrade dist cmds
  change make cmds
  disable IPv6 tests if IPv6 is not supported
  travis / OSX: run py 3.6 instead of 3.4
  fix giampaolo#1169: (Linux) users() hostname returns username instead
  update README, bump up version
  get rid of PSUTIL_TESTING env var: it must be necessarily set from cmdline, hence 'python -m psutil.tests' won't work out of the box
  try to set PSUTIL_TESTING env var from python before failing
  skip cpu_freq tests if not available (giampaolo#1170)
  update doc
  pre-release
  giampaolo#1053: drop python 3.3 support
  try to fix appveyor failure; also refactor generate_manifest.py
  giampaolo#1167 give CREDITS to @matray
  Including non-unicast packets in packet count calculation (giampaolo#1167)
  fix giampaolo#1166 (doc mistake)
  provide a 'make help' command
  ifconfig.py humanize bytes
  try to limit false positives on appveyor/windows
  reap_children() in a finally block in order to limit false positives
  unicode tests: use different name for test dir
  fix failure on osx/travis
  update Makefile
  fix test
  giampaolo#1164 give CREDITS to @wiggin15
  AIX: implement num_ctx_switches (giampaolo#1164)
  use new PYTHON_EXE
  improve logic to determine python exe location
  add DEVNOTES file; move TODO.aix into _psutil_aix.c
  Fix test_emulate_energy_full_not_avail (giampaolo#1163)
  update README
  try to limit occasional appveyor failure
  Remove trove classifiers for untested and unsupported platforms (giampaolo#1162)
  Fix giampaolo#1154: remove 'threads' method on older AIX (giampaolo#1156)
  give CREDITS to @adpag for giampaolo#1159, giampaolo#1160 and giampaolo#1161
  Fix test asserts due to leftover test subprocesses (giampaolo#1161)
  Fix network tests for newer ifconfig versions. (giampaolo#1160)
  Fix pre-commit hook for python 3.x. (giampaolo#1159)
  revert last commit
  ...
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