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#!/usr/bin/env python
# Copyright (c) 2009, 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.
"""OSX specific tests. These are implicitly run by test_psutil.py."""
import os
import re
import subprocess
import sys
import time
import psutil
from psutil._compat import PY3
from test_psutil import (TOLERANCE, OSX, sh, get_test_subprocess,
reap_children, retry_before_failing, unittest)
PAGESIZE = os.sysconf("SC_PAGE_SIZE")
def sysctl(cmdline):
"""Expects a sysctl command with an argument and parse the result
returning only the value of interest.
"""
p = subprocess.Popen(cmdline, shell=1, stdout=subprocess.PIPE)
result = p.communicate()[0].strip().split()[1]
if PY3:
result = str(result, sys.stdout.encoding)
try:
return int(result)
except ValueError:
return result
def vm_stat(field):
"""Wrapper around 'vm_stat' cmdline utility."""
out = sh('vm_stat')
for line in out.split('\n'):
if field in line:
break
else:
raise ValueError("line not found")
return int(re.search('\d+', line).group(0)) * PAGESIZE
@unittest.skipUnless(OSX, "not an OSX system")
class OSXSpecificTestCase(unittest.TestCase):
@classmethod
def setUpClass(cls):
cls.pid = get_test_subprocess().pid
@classmethod
def tearDownClass(cls):
reap_children()
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)
# --- virtual mem
def test_vmem_total(self):
sysctl_hwphymem = sysctl('sysctl hw.memsize')
self.assertEqual(sysctl_hwphymem, psutil.virtual_memory().total)
@retry_before_failing()
def test_vmem_free(self):
num = vm_stat("free")
self.assertAlmostEqual(psutil.virtual_memory().free, num,
delta=TOLERANCE)
@retry_before_failing()
def test_vmem_active(self):
num = vm_stat("active")
self.assertAlmostEqual(psutil.virtual_memory().active, num,
delta=TOLERANCE)
@retry_before_failing()
def test_vmem_inactive(self):
num = vm_stat("inactive")
self.assertAlmostEqual(psutil.virtual_memory().inactive, num,
delta=TOLERANCE)
@retry_before_failing()
def test_vmem_wired(self):
num = vm_stat("wired")
self.assertAlmostEqual(psutil.virtual_memory().wired, num,
delta=TOLERANCE)
# --- swap mem
def test_swapmem_sin(self):
num = vm_stat("Pageins")
self.assertEqual(psutil.swap_memory().sin, num)
def test_swapmem_sout(self):
num = vm_stat("Pageouts")
self.assertEqual(psutil.swap_memory().sout, num)
def test_swapmem_total(self):
tot1 = psutil.swap_memory().total
tot2 = 0
# OSX uses multiple cache files:
# http://en.wikipedia.org/wiki/Paging#OS_X
for name in os.listdir("/var/vm/"):
file = os.path.join("/var/vm", name)
if os.path.isfile(file):
tot2 += os.path.getsize(file)
self.assertEqual(tot1, tot2)
def main():
test_suite = unittest.TestSuite()
test_suite.addTest(unittest.makeSuite(OSXSpecificTestCase))
result = unittest.TextTestRunner(verbosity=2).run(test_suite)
return result.wasSuccessful()
if __name__ == '__main__':
if not main():
sys.exit(1)
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