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#!/usr/bin/env python
# Copyright (c) 2009, Jay Loden, Giampaolo Rodola'. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""BSD specific tests. These are implicitly run by test_psutil.py."""
import unittest
import subprocess
import time
import re
import sys
import os
import psutil
from psutil._compat import PY3
from test_psutil import DEVNULL
from test_psutil import (reap_children, get_test_subprocess, sh, which,
skipUnless)
PAGESIZE = os.sysconf("SC_PAGE_SIZE")
TOLERANCE = 200 * 1024 # 200 KB
MUSE_AVAILABLE = which('muse')
def sysctl(cmdline):
"""Expects a sysctl command with an argument and parse the result
returning only the value of interest.
"""
result = sh("sysctl " + cmdline)
result = result[result.find(": ") + 2:]
try:
return int(result)
except ValueError:
return result
def muse(field):
"""Thin wrapper around 'muse' cmdline utility."""
out = sh('muse', stderr=DEVNULL)
for line in out.split('\n'):
if line.startswith(field):
break
else:
raise ValueError("line not found")
return int(line.split()[1])
class BSDSpecificTestCase(unittest.TestCase):
def setUp(self):
self.pid = get_test_subprocess().pid
def tearDown(self):
reap_children()
def assert_eq_w_tol(self, first, second, tolerance):
difference = abs(first - second)
if difference <= tolerance:
return
msg = '%r != %r within %r delta (%r difference)' \
% (first, second, tolerance, difference)
raise AssertionError(msg)
def test_BOOT_TIME(self):
s = sysctl('sysctl kern.boottime')
s = s[s.find(" sec = ") + 7:]
s = s[:s.find(',')]
btime = int(s)
self.assertEqual(btime, psutil.BOOT_TIME)
def test_process_create_time(self):
cmdline = "ps -o lstart -p %s" %self.pid
p = subprocess.Popen(cmdline, shell=1, stdout=subprocess.PIPE)
output = p.communicate()[0]
if PY3:
output = str(output, sys.stdout.encoding)
start_ps = output.replace('STARTED', '').strip()
start_psutil = psutil.Process(self.pid).create_time
start_psutil = time.strftime("%a %b %e %H:%M:%S %Y",
time.localtime(start_psutil))
self.assertEqual(start_ps, start_psutil)
def test_disks(self):
# test psutil.disk_usage() and psutil.disk_partitions()
# against "df -a"
def df(path):
out = sh('df -k "%s"' % path).strip()
lines = out.split('\n')
lines.pop(0)
line = lines.pop(0)
dev, total, used, free = line.split()[:4]
if dev == 'none':
dev = ''
total = int(total) * 1024
used = int(used) * 1024
free = int(free) * 1024
return dev, total, used, free
for part in psutil.disk_partitions(all=False):
usage = psutil.disk_usage(part.mountpoint)
dev, total, used, free = df(part.mountpoint)
self.assertEqual(part.device, dev)
self.assertEqual(usage.total, total)
# 10 MB tollerance
if abs(usage.free - free) > 10 * 1024 * 1024:
self.fail("psutil=%s, df=%s" % (usage.free, free))
if abs(usage.used - used) > 10 * 1024 * 1024:
self.fail("psutil=%s, df=%s" % (usage.used, used))
def test_memory_maps(self):
out = sh('procstat -v %s' % self.pid)
maps = psutil.Process(self.pid).get_memory_maps(grouped=False)
lines = out.split('\n')[1:]
while lines:
line = lines.pop()
fields = line.split()
_, start, stop, perms, res = fields[:5]
map = maps.pop()
self.assertEqual("%s-%s" % (start, stop), map.addr)
self.assertEqual(int(res), map.rss)
if not map.path.startswith('['):
self.assertEqual(fields[10], map.path)
# --- virtual_memory(); tests against sysctl
def test_vmem_total(self):
syst = sysctl("sysctl vm.stats.vm.v_page_count") * PAGESIZE
self.assertEqual(psutil.virtual_memory().total, syst)
def test_vmem_active(self):
syst = sysctl("vm.stats.vm.v_active_count") * PAGESIZE
self.assert_eq_w_tol(psutil.virtual_memory().active, syst, TOLERANCE)
def test_vmem_inactive(self):
syst = sysctl("vm.stats.vm.v_inactive_count") * PAGESIZE
self.assert_eq_w_tol(psutil.virtual_memory().inactive, syst, TOLERANCE)
def test_vmem_wired(self):
syst = sysctl("vm.stats.vm.v_wire_count") * PAGESIZE
self.assert_eq_w_tol(psutil.virtual_memory().wired, syst, TOLERANCE)
def test_vmem_cached(self):
syst = sysctl("vm.stats.vm.v_cache_count") * PAGESIZE
self.assert_eq_w_tol(psutil.virtual_memory().cached, syst, TOLERANCE)
def test_vmem_free(self):
syst = sysctl("vm.stats.vm.v_free_count") * PAGESIZE
self.assert_eq_w_tol(psutil.virtual_memory().free, syst, TOLERANCE)
def test_vmem_buffers(self):
syst = sysctl("vfs.bufspace")
self.assert_eq_w_tol(psutil.virtual_memory().buffers, syst, TOLERANCE)
# --- virtual_memory(); tests against muse
@skipUnless(MUSE_AVAILABLE)
def test_total(self):
num = muse('Total')
self.assertEqual(psutil.virtual_memory().total, num)
@skipUnless(MUSE_AVAILABLE)
def test_active(self):
num = muse('Active')
self.assert_eq_w_tol(psutil.virtual_memory().active, num, TOLERANCE)
@skipUnless(MUSE_AVAILABLE)
def test_inactive(self):
num = muse('Inactive')
self.assert_eq_w_tol(psutil.virtual_memory().inactive, num, TOLERANCE)
@skipUnless(MUSE_AVAILABLE)
def test_wired(self):
num = muse('Wired')
self.assert_eq_w_tol(psutil.virtual_memory().wired, num, TOLERANCE)
@skipUnless(MUSE_AVAILABLE)
def test_cached(self):
num = muse('Cache')
self.assert_eq_w_tol(psutil.virtual_memory().cached, num, TOLERANCE)
@skipUnless(MUSE_AVAILABLE)
def test_free(self):
num = muse('Free')
self.assert_eq_w_tol(psutil.virtual_memory().free, num, TOLERANCE)
@skipUnless(MUSE_AVAILABLE)
def test_buffers(self):
num = muse('Buffer')
self.assert_eq_w_tol(psutil.virtual_memory().buffers, num, TOLERANCE)
if __name__ == '__main__':
test_suite = unittest.TestSuite()
test_suite.addTest(unittest.makeSuite(BSDSpecificTestCase))
unittest.TextTestRunner(verbosity=2).run(test_suite)
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