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--lsof: suppress stderr 

This can spam a lot of warnings (per invocation), e.g.:

> lsof: WARNING: can't stat() nsfs file system /run/docker/netns/default
        Output information may be incomplete.

Or from Travis/MacOS:

> lsof: WARNING: can't stat() vmhgfs file system /Volumes/VMware Shared Folders
>       Output information may be incomplete.
>       assuming "dev=31000003" from mount table
This commit is contained in:
Daniel Hahler 2019-02-10 14:31:38 +01:00
parent 386e801a5a
commit 237f690f8b
1 changed files with 5 additions and 1 deletions
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6
src/_pytest/pytester.py
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@ -81,7 +81,11 @@ class LsofFdLeakChecker(object):
def _exec_lsof(self): def _exec_lsof(self):
pid = os.getpid() pid = os.getpid()
return subprocess.check_output(("lsof", "-Ffn0", "-p", str(pid))).decode() # py3: use subprocess.DEVNULL directly.
with open(os.devnull, "wb") as devnull:
return subprocess.check_output(
("lsof", "-Ffn0", "-p", str(pid)), stderr=devnull
).decode()
def _parse_lsof_output(self, out): def _parse_lsof_output(self, out):
def isopen(line): def isopen(line):