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Archive obtained from https://psutil.googlecode.com/files/psutil-1.0.1.tar.gz and extracted over existing source code without modifications.
239 lines
8.6 KiB
Python
Executable File
239 lines
8.6 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""POSIX specific tests. These are implicitly run by test_psutil.py."""
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import unittest
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import subprocess
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import time
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import sys
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import os
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import datetime
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import psutil
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from psutil._compat import PY3
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from test_psutil import *
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def ps(cmd):
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"""Expects a ps command with a -o argument and parse the result
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returning only the value of interest.
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"""
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if not LINUX:
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cmd = cmd.replace(" --no-headers ", " ")
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if SUNOS:
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cmd = cmd.replace("-o command", "-o comm")
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cmd = cmd.replace("-o start", "-o stime")
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p = subprocess.Popen(cmd, shell=1, stdout=subprocess.PIPE)
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output = p.communicate()[0].strip()
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if PY3:
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output = str(output, sys.stdout.encoding)
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if not LINUX:
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output = output.split('\n')[1].strip()
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try:
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return int(output)
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except ValueError:
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return output
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class PosixSpecificTestCase(unittest.TestCase):
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"""Compare psutil results against 'ps' command line utility."""
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# for ps -o arguments see: http://unixhelp.ed.ac.uk/CGI/man-cgi?ps
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def setUp(self):
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self.pid = get_test_subprocess([PYTHON, "-E", "-O"],
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stdin=subprocess.PIPE).pid
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def tearDown(self):
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reap_children()
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def test_process_parent_pid(self):
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ppid_ps = ps("ps --no-headers -o ppid -p %s" %self.pid)
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ppid_psutil = psutil.Process(self.pid).ppid
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self.assertEqual(ppid_ps, ppid_psutil)
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def test_process_uid(self):
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uid_ps = ps("ps --no-headers -o uid -p %s" %self.pid)
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uid_psutil = psutil.Process(self.pid).uids.real
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self.assertEqual(uid_ps, uid_psutil)
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def test_process_gid(self):
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gid_ps = ps("ps --no-headers -o rgid -p %s" %self.pid)
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gid_psutil = psutil.Process(self.pid).gids.real
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self.assertEqual(gid_ps, gid_psutil)
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def test_process_username(self):
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username_ps = ps("ps --no-headers -o user -p %s" %self.pid)
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username_psutil = psutil.Process(self.pid).username
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self.assertEqual(username_ps, username_psutil)
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@skip_on_access_denied()
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def test_process_rss_memory(self):
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# give python interpreter some time to properly initialize
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# so that the results are the same
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time.sleep(0.1)
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rss_ps = ps("ps --no-headers -o rss -p %s" %self.pid)
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rss_psutil = psutil.Process(self.pid).get_memory_info()[0] / 1024
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self.assertEqual(rss_ps, rss_psutil)
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@skip_on_access_denied()
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def test_process_vsz_memory(self):
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# give python interpreter some time to properly initialize
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# so that the results are the same
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time.sleep(0.1)
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vsz_ps = ps("ps --no-headers -o vsz -p %s" %self.pid)
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vsz_psutil = psutil.Process(self.pid).get_memory_info()[1] / 1024
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self.assertEqual(vsz_ps, vsz_psutil)
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def test_process_name(self):
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# use command + arg since "comm" keyword not supported on all platforms
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name_ps = ps("ps --no-headers -o command -p %s" %self.pid).split(' ')[0]
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# remove path if there is any, from the command
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name_ps = os.path.basename(name_ps).lower()
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name_psutil = psutil.Process(self.pid).name.lower()
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self.assertEqual(name_ps, name_psutil)
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@unittest.skipIf(OSX or BSD,
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'ps -o start not available')
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def test_process_create_time(self):
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time_ps = ps("ps --no-headers -o start -p %s" %self.pid).split(' ')[0]
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time_psutil = psutil.Process(self.pid).create_time
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if SUNOS:
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time_psutil = round(time_psutil)
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time_psutil_tstamp = datetime.datetime.fromtimestamp(
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time_psutil).strftime("%H:%M:%S")
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self.assertEqual(time_ps, time_psutil_tstamp)
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def test_process_exe(self):
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ps_pathname = ps("ps --no-headers -o command -p %s" %self.pid).split(' ')[0]
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psutil_pathname = psutil.Process(self.pid).exe
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try:
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self.assertEqual(ps_pathname, psutil_pathname)
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except AssertionError:
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# certain platforms such as BSD are more accurate returning:
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# "/usr/local/bin/python2.7"
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# ...instead of:
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# "/usr/local/bin/python"
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# We do not want to consider this difference in accuracy
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# an error.
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adjusted_ps_pathname = ps_pathname[:len(ps_pathname)]
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self.assertEqual(ps_pathname, adjusted_ps_pathname)
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def test_process_cmdline(self):
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ps_cmdline = ps("ps --no-headers -o command -p %s" %self.pid)
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psutil_cmdline = " ".join(psutil.Process(self.pid).cmdline)
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if SUNOS:
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# ps on Solaris only shows the first part of the cmdline
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psutil_cmdline = psutil_cmdline.split(" ")[0]
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self.assertEqual(ps_cmdline, psutil_cmdline)
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@retry_before_failing()
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def test_get_pids(self):
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# Note: this test might fail if the OS is starting/killing
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# other processes in the meantime
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if SUNOS:
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cmd = ["ps", "ax"]
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else:
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cmd = ["ps", "ax", "-o", "pid"]
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p = get_test_subprocess(cmd, stdout=subprocess.PIPE)
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output = p.communicate()[0].strip()
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if PY3:
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output = str(output, sys.stdout.encoding)
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pids_ps = []
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for line in output.split('\n')[1:]:
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if line:
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pid = int(line.split()[0].strip())
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pids_ps.append(pid)
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# remove ps subprocess pid which is supposed to be dead in meantime
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pids_ps.remove(p.pid)
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pids_psutil = psutil.get_pid_list()
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pids_ps.sort()
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pids_psutil.sort()
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# on OSX ps doesn't show pid 0
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if OSX and 0 not in pids_ps:
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pids_ps.insert(0, 0)
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if pids_ps != pids_psutil:
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difference = [x for x in pids_psutil if x not in pids_ps] + \
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[x for x in pids_ps if x not in pids_psutil]
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self.fail("difference: " + str(difference))
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# for some reason ifconfig -a does not report differente interfaces
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# psutil does
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@unittest.skipIf(SUNOS, "test not reliable on SUNOS")
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def test_nic_names(self):
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p = subprocess.Popen("ifconfig -a", shell=1, stdout=subprocess.PIPE)
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output = p.communicate()[0].strip()
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if PY3:
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output = str(output, sys.stdout.encoding)
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for nic in psutil.net_io_counters(pernic=True).keys():
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for line in output.split():
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if line.startswith(nic):
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break
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else:
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self.fail("couldn't find %s nic in 'ifconfig -a' output" % nic)
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def test_get_users(self):
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out = sh("who")
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lines = out.split('\n')
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users = [x.split()[0] for x in lines]
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self.assertEqual(len(users), len(psutil.get_users()))
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terminals = [x.split()[1] for x in lines]
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for u in psutil.get_users():
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self.assertTrue(u.name in users, u.name)
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self.assertTrue(u.terminal in terminals, u.terminal)
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def test_fds_open(self):
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# Note: this fails from time to time; I'm keen on thinking
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# it doesn't mean something is broken
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def call(p, attr):
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attr = getattr(p, name, None)
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if attr is not None and callable(attr):
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ret = attr()
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else:
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ret = attr
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p = psutil.Process(os.getpid())
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attrs = []
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failures = []
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for name in dir(psutil.Process):
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if name.startswith('_') \
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or name.startswith('set_') \
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or name in ('terminate', 'kill', 'suspend', 'resume', 'nice',
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'send_signal', 'wait', 'get_children', 'as_dict'):
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continue
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else:
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try:
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num1 = p.get_num_fds()
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for x in range(2):
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call(p, name)
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num2 = p.get_num_fds()
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except psutil.AccessDenied:
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pass
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else:
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if abs(num2 - num1) > 1:
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fail = "failure while processing Process.%s method " \
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"(before=%s, after=%s)" % (name, num1, num2)
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failures.append(fail)
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if failures:
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self.fail('\n' + '\n'.join(failures))
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def test_main():
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test_suite = unittest.TestSuite()
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test_suite.addTest(unittest.makeSuite(PosixSpecificTestCase))
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result = unittest.TextTestRunner(verbosity=2).run(test_suite)
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return result.wasSuccessful()
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if __name__ == '__main__':
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if not test_main():
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sys.exit(1)
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