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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.
"""Tests for system APIS."""
import contextlib
import datetime
import errno
import os
import pprint
import shutil
import signal
import socket
import sys
import tempfile
import time
import psutil
from psutil import AIX
from psutil import BSD
from psutil import FREEBSD
from psutil import LINUX
from psutil import MACOS
from psutil import NETBSD
from psutil import OPENBSD
from psutil import POSIX
from psutil import SUNOS
from psutil import WINDOWS
from psutil._compat import FileNotFoundError
from psutil._compat import long
from psutil.tests import APPVEYOR
from psutil.tests import ASCII_FS
from psutil.tests import check_net_address
from psutil.tests import DEVNULL
from psutil.tests import enum
from psutil.tests import get_test_subprocess
from psutil.tests import HAS_BATTERY
from psutil.tests import HAS_CPU_FREQ
from psutil.tests import HAS_GETLOADAVG
from psutil.tests import HAS_NET_IO_COUNTERS
from psutil.tests import HAS_SENSORS_BATTERY
from psutil.tests import HAS_SENSORS_FANS
from psutil.tests import HAS_SENSORS_TEMPERATURES
from psutil.tests import mock
from psutil.tests import reap_children
from psutil.tests import retry_on_failure
from psutil.tests import safe_rmpath
from psutil.tests import TESTFN
from psutil.tests import TESTFN_UNICODE
from psutil.tests import TRAVIS
from psutil.tests import unittest
# ===================================================================
# --- System-related API tests
# ===================================================================
class TestSystemAPIs(unittest.TestCase):
"""Tests for system-related APIs."""
def setUp(self):
safe_rmpath(TESTFN)
def tearDown(self):
reap_children()
def test_process_iter(self):
self.assertIn(os.getpid(), [x.pid for x in psutil.process_iter()])
sproc = get_test_subprocess()
self.assertIn(sproc.pid, [x.pid for x in psutil.process_iter()])
p = psutil.Process(sproc.pid)
p.kill()
p.wait()
self.assertNotIn(sproc.pid, [x.pid for x in psutil.process_iter()])
with mock.patch('psutil.Process',
side_effect=psutil.NoSuchProcess(os.getpid())):
self.assertEqual(list(psutil.process_iter()), [])
with mock.patch('psutil.Process',
side_effect=psutil.AccessDenied(os.getpid())):
with self.assertRaises(psutil.AccessDenied):
list(psutil.process_iter())
def test_prcess_iter_w_params(self):
for p in psutil.process_iter(attrs=['pid']):
self.assertEqual(list(p.info.keys()), ['pid'])
with self.assertRaises(ValueError):
list(psutil.process_iter(attrs=['foo']))
with mock.patch("psutil._psplatform.Process.cpu_times",
side_effect=psutil.AccessDenied(0, "")) as m:
for p in psutil.process_iter(attrs=["pid", "cpu_times"]):
self.assertIsNone(p.info['cpu_times'])
self.assertGreaterEqual(p.info['pid'], 0)
assert m.called
with mock.patch("psutil._psplatform.Process.cpu_times",
side_effect=psutil.AccessDenied(0, "")) as m:
flag = object()
for p in psutil.process_iter(
attrs=["pid", "cpu_times"], ad_value=flag):
self.assertIs(p.info['cpu_times'], flag)
self.assertGreaterEqual(p.info['pid'], 0)
assert m.called
def test_wait_procs(self):
def callback(p):
pids.append(p.pid)
pids = []
sproc1 = get_test_subprocess()
sproc2 = get_test_subprocess()
sproc3 = get_test_subprocess()
procs = [psutil.Process(x.pid) for x in (sproc1, sproc2, sproc3)]
self.assertRaises(ValueError, psutil.wait_procs, procs, timeout=-1)
self.assertRaises(TypeError, psutil.wait_procs, procs, callback=1)
t = time.time()
gone, alive = psutil.wait_procs(procs, timeout=0.01, callback=callback)
self.assertLess(time.time() - t, 0.5)
self.assertEqual(gone, [])
self.assertEqual(len(alive), 3)
self.assertEqual(pids, [])
for p in alive:
self.assertFalse(hasattr(p, 'returncode'))
@retry_on_failure(30)
def test(procs, callback):
gone, alive = psutil.wait_procs(procs, timeout=0.03,
callback=callback)
self.assertEqual(len(gone), 1)
self.assertEqual(len(alive), 2)
return gone, alive
sproc3.terminate()
gone, alive = test(procs, callback)
self.assertIn(sproc3.pid, [x.pid for x in gone])
if POSIX:
self.assertEqual(gone.pop().returncode, -signal.SIGTERM)
else:
self.assertEqual(gone.pop().returncode, 1)
self.assertEqual(pids, [sproc3.pid])
for p in alive:
self.assertFalse(hasattr(p, 'returncode'))
@retry_on_failure(30)
def test(procs, callback):
gone, alive = psutil.wait_procs(procs, timeout=0.03,
callback=callback)
self.assertEqual(len(gone), 3)
self.assertEqual(len(alive), 0)
return gone, alive
sproc1.terminate()
sproc2.terminate()
gone, alive = test(procs, callback)
self.assertEqual(set(pids), set([sproc1.pid, sproc2.pid, sproc3.pid]))
for p in gone:
self.assertTrue(hasattr(p, 'returncode'))
def test_wait_procs_no_timeout(self):
sproc1 = get_test_subprocess()
sproc2 = get_test_subprocess()
sproc3 = get_test_subprocess()
procs = [psutil.Process(x.pid) for x in (sproc1, sproc2, sproc3)]
for p in procs:
p.terminate()
gone, alive = psutil.wait_procs(procs)
def test_boot_time(self):
bt = psutil.boot_time()
self.assertIsInstance(bt, float)
self.assertGreater(bt, 0)
self.assertLess(bt, time.time())
@unittest.skipIf(not POSIX, 'POSIX only')
def test_PAGESIZE(self):
# pagesize is used internally to perform different calculations
# and it's determined by using SC_PAGE_SIZE; make sure
# getpagesize() returns the same value.
import resource
self.assertEqual(os.sysconf("SC_PAGE_SIZE"), resource.getpagesize())
def test_virtual_memory(self):
mem = psutil.virtual_memory()
assert mem.total > 0, mem
assert mem.available > 0, mem
assert 0 <= mem.percent <= 100, mem
assert mem.used > 0, mem
assert mem.free >= 0, mem
for name in mem._fields:
value = getattr(mem, name)
if name != 'percent':
self.assertIsInstance(value, (int, long))
if name != 'total':
if not value >= 0:
self.fail("%r < 0 (%s)" % (name, value))
if value > mem.total:
self.fail("%r > total (total=%s, %s=%s)"
% (name, mem.total, name, value))
def test_swap_memory(self):
mem = psutil.swap_memory()
self.assertEqual(
mem._fields, ('total', 'used', 'free', 'percent', 'sin', 'sout'))
assert mem.total >= 0, mem
assert mem.used >= 0, mem
if mem.total > 0:
# likely a system with no swap partition
assert mem.free > 0, mem
else:
assert mem.free == 0, mem
assert 0 <= mem.percent <= 100, mem
assert mem.sin >= 0, mem
assert mem.sout >= 0, mem
def test_pid_exists(self):
sproc = get_test_subprocess()
self.assertTrue(psutil.pid_exists(sproc.pid))
p = psutil.Process(sproc.pid)
p.kill()
p.wait()
self.assertFalse(psutil.pid_exists(sproc.pid))
self.assertFalse(psutil.pid_exists(-1))
self.assertEqual(psutil.pid_exists(0), 0 in psutil.pids())
def test_pid_exists_2(self):
reap_children()
pids = psutil.pids()
for pid in pids:
try:
assert psutil.pid_exists(pid)
except AssertionError:
# in case the process disappeared in meantime fail only
# if it is no longer in psutil.pids()
time.sleep(.1)
if pid in psutil.pids():
self.fail(pid)
pids = range(max(pids) + 5000, max(pids) + 6000)
for pid in pids:
self.assertFalse(psutil.pid_exists(pid), msg=pid)
def test_pids(self):
pidslist = psutil.pids()
procslist = [x.pid for x in psutil.process_iter()]
# make sure every pid is unique
self.assertEqual(sorted(set(pidslist)), pidslist)
self.assertEqual(pidslist, procslist)
def test_test(self):
# test for psutil.test() function
stdout = sys.stdout
sys.stdout = DEVNULL
try:
psutil.test()
finally:
sys.stdout = stdout
def test_cpu_count(self):
logical = psutil.cpu_count()
self.assertEqual(logical, len(psutil.cpu_times(percpu=True)))
self.assertGreaterEqual(logical, 1)
#
if os.path.exists("/proc/cpuinfo"):
with open("/proc/cpuinfo") as fd:
cpuinfo_data = fd.read()
if "physical id" not in cpuinfo_data:
raise unittest.SkipTest("cpuinfo doesn't include physical id")
physical = psutil.cpu_count(logical=False)
if WINDOWS and sys.getwindowsversion()[:2] <= (6, 1): # <= Vista
self.assertIsNone(physical)
else:
self.assertGreaterEqual(physical, 1)
self.assertGreaterEqual(logical, physical)
def test_cpu_count_none(self):
# https://github.com/giampaolo/psutil/issues/1085
for val in (-1, 0, None):
with mock.patch('psutil._psplatform.cpu_count_logical',
return_value=val) as m:
self.assertIsNone(psutil.cpu_count())
assert m.called
with mock.patch('psutil._psplatform.cpu_count_physical',
return_value=val) as m:
self.assertIsNone(psutil.cpu_count(logical=False))
assert m.called
def test_cpu_times(self):
# Check type, value >= 0, str().
total = 0
times = psutil.cpu_times()
sum(times)
for cp_time in times:
self.assertIsInstance(cp_time, float)
self.assertGreaterEqual(cp_time, 0.0)
total += cp_time
self.assertEqual(total, sum(times))
str(times)
# CPU times are always supposed to increase over time
# or at least remain the same and that's because time
# cannot go backwards.
# Surprisingly sometimes this might not be the case (at
# least on Windows and Linux), see:
# https://github.com/giampaolo/psutil/issues/392
# https://github.com/giampaolo/psutil/issues/645
# if not WINDOWS:
# last = psutil.cpu_times()
# for x in range(100):
# new = psutil.cpu_times()
# for field in new._fields:
# new_t = getattr(new, field)
# last_t = getattr(last, field)
# self.assertGreaterEqual(new_t, last_t,
# msg="%s %s" % (new_t, last_t))
# last = new
def test_cpu_times_time_increases(self):
# Make sure time increases between calls.
t1 = sum(psutil.cpu_times())
stop_at = time.time() + 1
while time.time() < stop_at:
t2 = sum(psutil.cpu_times())
if t2 > t1:
return
self.fail("time remained the same")
def test_per_cpu_times(self):
# Check type, value >= 0, str().
for times in psutil.cpu_times(percpu=True):
total = 0
sum(times)
for cp_time in times:
self.assertIsInstance(cp_time, float)
self.assertGreaterEqual(cp_time, 0.0)
total += cp_time
self.assertEqual(total, sum(times))
str(times)
self.assertEqual(len(psutil.cpu_times(percpu=True)[0]),
len(psutil.cpu_times(percpu=False)))
# Note: in theory CPU times are always supposed to increase over
# time or remain the same but never go backwards. In practice
# sometimes this is not the case.
# This issue seemd to be afflict Windows:
# https://github.com/giampaolo/psutil/issues/392
# ...but it turns out also Linux (rarely) behaves the same.
# last = psutil.cpu_times(percpu=True)
# for x in range(100):
# new = psutil.cpu_times(percpu=True)
# for index in range(len(new)):
# newcpu = new[index]
# lastcpu = last[index]
# for field in newcpu._fields:
# new_t = getattr(newcpu, field)
# last_t = getattr(lastcpu, field)
# self.assertGreaterEqual(
# new_t, last_t, msg="%s %s" % (lastcpu, newcpu))
# last = new
def test_per_cpu_times_2(self):
# Simulate some work load then make sure time have increased
# between calls.
tot1 = psutil.cpu_times(percpu=True)
giveup_at = time.time() + 1
while True:
if time.time() >= giveup_at:
return self.fail("timeout")
tot2 = psutil.cpu_times(percpu=True)
for t1, t2 in zip(tot1, tot2):
t1, t2 = psutil._cpu_busy_time(t1), psutil._cpu_busy_time(t2)
difference = t2 - t1
if difference >= 0.05:
return
def test_cpu_times_comparison(self):
# Make sure the sum of all per cpu times is almost equal to
# base "one cpu" times.
base = psutil.cpu_times()
per_cpu = psutil.cpu_times(percpu=True)
summed_values = base._make([sum(num) for num in zip(*per_cpu)])
for field in base._fields:
self.assertAlmostEqual(
getattr(base, field), getattr(summed_values, field), delta=1)
def _test_cpu_percent(self, percent, last_ret, new_ret):
try:
self.assertIsInstance(percent, float)
self.assertGreaterEqual(percent, 0.0)
self.assertIsNot(percent, -0.0)
self.assertLessEqual(percent, 100.0 * psutil.cpu_count())
except AssertionError as err:
raise AssertionError("\n%s\nlast=%s\nnew=%s" % (
err, pprint.pformat(last_ret), pprint.pformat(new_ret)))
def test_cpu_percent(self):
last = psutil.cpu_percent(interval=0.001)
for x in range(100):
new = psutil.cpu_percent(interval=None)
self._test_cpu_percent(new, last, new)
last = new
with self.assertRaises(ValueError):
psutil.cpu_percent(interval=-1)
def test_per_cpu_percent(self):
last = psutil.cpu_percent(interval=0.001, percpu=True)
self.assertEqual(len(last), psutil.cpu_count())
for x in range(100):
new = psutil.cpu_percent(interval=None, percpu=True)
for percent in new:
self._test_cpu_percent(percent, last, new)
last = new
with self.assertRaises(ValueError):
psutil.cpu_percent(interval=-1, percpu=True)
def test_cpu_times_percent(self):
last = psutil.cpu_times_percent(interval=0.001)
for x in range(100):
new = psutil.cpu_times_percent(interval=None)
for percent in new:
self._test_cpu_percent(percent, last, new)
self._test_cpu_percent(sum(new), last, new)
last = new
def test_per_cpu_times_percent(self):
last = psutil.cpu_times_percent(interval=0.001, percpu=True)
self.assertEqual(len(last), psutil.cpu_count())
for x in range(100):
new = psutil.cpu_times_percent(interval=None, percpu=True)
for cpu in new:
for percent in cpu:
self._test_cpu_percent(percent, last, new)
self._test_cpu_percent(sum(cpu), last, new)
last = new
def test_per_cpu_times_percent_negative(self):
# see: https://github.com/giampaolo/psutil/issues/645
psutil.cpu_times_percent(percpu=True)
zero_times = [x._make([0 for x in range(len(x._fields))])
for x in psutil.cpu_times(percpu=True)]
with mock.patch('psutil.cpu_times', return_value=zero_times):
for cpu in psutil.cpu_times_percent(percpu=True):
for percent in cpu:
self._test_cpu_percent(percent, None, None)
def test_disk_usage(self):
usage = psutil.disk_usage(os.getcwd())
self.assertEqual(usage._fields, ('total', 'used', 'free', 'percent'))
assert usage.total > 0, usage
assert usage.used > 0, usage
assert usage.free > 0, usage
assert usage.total > usage.used, usage
assert usage.total > usage.free, usage
assert 0 <= usage.percent <= 100, usage.percent
if hasattr(shutil, 'disk_usage'):
# py >= 3.3, see: http://bugs.python.org/issue12442
shutil_usage = shutil.disk_usage(os.getcwd())
tolerance = 5 * 1024 * 1024 # 5MB
self.assertEqual(usage.total, shutil_usage.total)
self.assertAlmostEqual(usage.free, shutil_usage.free,
delta=tolerance)
self.assertAlmostEqual(usage.used, shutil_usage.used,
delta=tolerance)
# if path does not exist OSError ENOENT is expected across
# all platforms
fname = tempfile.mktemp()
with self.assertRaises(FileNotFoundError):
psutil.disk_usage(fname)
def test_disk_usage_unicode(self):
# See: https://github.com/giampaolo/psutil/issues/416
if ASCII_FS:
with self.assertRaises(UnicodeEncodeError):
psutil.disk_usage(TESTFN_UNICODE)
def test_disk_usage_bytes(self):
psutil.disk_usage(b'.')
def test_disk_partitions(self):
# all = False
ls = psutil.disk_partitions(all=False)
# on travis we get:
# self.assertEqual(p.cpu_affinity(), [n])
# AssertionError: Lists differ: [0, 1, 2, 3, 4, 5, 6, 7,... != [0]
self.assertTrue(ls, msg=ls)
for disk in ls:
self.assertIsInstance(disk.device, str)
self.assertIsInstance(disk.mountpoint, str)
self.assertIsInstance(disk.fstype, str)
self.assertIsInstance(disk.opts, str)
if WINDOWS and 'cdrom' in disk.opts:
continue
if not POSIX:
assert os.path.exists(disk.device), disk
else:
# we cannot make any assumption about this, see:
# http://goo.gl/p9c43
disk.device
# on modern systems mount points can also be files
assert os.path.exists(disk.mountpoint), disk
assert disk.fstype, disk
# all = True
ls = psutil.disk_partitions(all=True)
self.assertTrue(ls, msg=ls)
for disk in psutil.disk_partitions(all=True):
if not WINDOWS:
try:
os.stat(disk.mountpoint)
except OSError as err:
if TRAVIS and MACOS and err.errno == errno.EIO:
continue
# http://mail.python.org/pipermail/python-dev/
# 2012-June/120787.html
if err.errno not in (errno.EPERM, errno.EACCES):
raise
else:
assert os.path.exists(disk.mountpoint), disk
self.assertIsInstance(disk.fstype, str)
self.assertIsInstance(disk.opts, str)
def find_mount_point(path):
path = os.path.abspath(path)
while not os.path.ismount(path):
path = os.path.dirname(path)
return path.lower()
mount = find_mount_point(__file__)
mounts = [x.mountpoint.lower() for x in
psutil.disk_partitions(all=True)]
self.assertIn(mount, mounts)
psutil.disk_usage(mount)
@unittest.skipIf(not HAS_NET_IO_COUNTERS, 'not supported')
def test_net_io_counters(self):
def check_ntuple(nt):
self.assertEqual(nt[0], nt.bytes_sent)
self.assertEqual(nt[1], nt.bytes_recv)
self.assertEqual(nt[2], nt.packets_sent)
self.assertEqual(nt[3], nt.packets_recv)
self.assertEqual(nt[4], nt.errin)
self.assertEqual(nt[5], nt.errout)
self.assertEqual(nt[6], nt.dropin)
self.assertEqual(nt[7], nt.dropout)
assert nt.bytes_sent >= 0, nt
assert nt.bytes_recv >= 0, nt
assert nt.packets_sent >= 0, nt
assert nt.packets_recv >= 0, nt
assert nt.errin >= 0, nt
assert nt.errout >= 0, nt
assert nt.dropin >= 0, nt
assert nt.dropout >= 0, nt
ret = psutil.net_io_counters(pernic=False)
check_ntuple(ret)
ret = psutil.net_io_counters(pernic=True)
self.assertNotEqual(ret, [])
for key in ret:
self.assertTrue(key)
self.assertIsInstance(key, str)
check_ntuple(ret[key])
@unittest.skipIf(not HAS_NET_IO_COUNTERS, 'not supported')
def test_net_io_counters_no_nics(self):
# Emulate a case where no NICs are installed, see:
# https://github.com/giampaolo/psutil/issues/1062
with mock.patch('psutil._psplatform.net_io_counters',
return_value={}) as m:
self.assertIsNone(psutil.net_io_counters(pernic=False))
self.assertEqual(psutil.net_io_counters(pernic=True), {})
assert m.called
def test_net_if_addrs(self):
nics = psutil.net_if_addrs()
assert nics, nics
nic_stats = psutil.net_if_stats()
# Not reliable on all platforms (net_if_addrs() reports more
# interfaces).
# self.assertEqual(sorted(nics.keys()),
# sorted(psutil.net_io_counters(pernic=True).keys()))
families = set([socket.AF_INET, socket.AF_INET6, psutil.AF_LINK])
for nic, addrs in nics.items():
self.assertIsInstance(nic, str)
self.assertEqual(len(set(addrs)), len(addrs))
for addr in addrs:
self.assertIsInstance(addr.family, int)
self.assertIsInstance(addr.address, str)
self.assertIsInstance(addr.netmask, (str, type(None)))
self.assertIsInstance(addr.broadcast, (str, type(None)))
self.assertIn(addr.family, families)
if sys.version_info >= (3, 4):
self.assertIsInstance(addr.family, enum.IntEnum)
if nic_stats[nic].isup:
# Do not test binding to addresses of interfaces
# that are down
if addr.family == socket.AF_INET:
s = socket.socket(addr.family)
with contextlib.closing(s):
s.bind((addr.address, 0))
elif addr.family == socket.AF_INET6:
info = socket.getaddrinfo(
addr.address, 0, socket.AF_INET6,
socket.SOCK_STREAM, 0, socket.AI_PASSIVE)[0]
af, socktype, proto, canonname, sa = info
s = socket.socket(af, socktype, proto)
with contextlib.closing(s):
s.bind(sa)
for ip in (addr.address, addr.netmask, addr.broadcast,
addr.ptp):
if ip is not None:
# TODO: skip AF_INET6 for now because I get:
# AddressValueError: Only hex digits permitted in
# u'c6f3%lxcbr0' in u'fe80::c8e0:fff:fe54:c6f3%lxcbr0'
if addr.family != socket.AF_INET6:
check_net_address(ip, addr.family)
# broadcast and ptp addresses are mutually exclusive
if addr.broadcast:
self.assertIsNone(addr.ptp)
elif addr.ptp:
self.assertIsNone(addr.broadcast)
if BSD or MACOS or SUNOS:
if hasattr(socket, "AF_LINK"):
self.assertEqual(psutil.AF_LINK, socket.AF_LINK)
elif LINUX:
self.assertEqual(psutil.AF_LINK, socket.AF_PACKET)
elif WINDOWS:
self.assertEqual(psutil.AF_LINK, -1)
def test_net_if_addrs_mac_null_bytes(self):
# Simulate that the underlying C function returns an incomplete
# MAC address. psutil is supposed to fill it with null bytes.
# https://github.com/giampaolo/psutil/issues/786
if POSIX:
ret = [('em1', psutil.AF_LINK, '06:3d:29', None, None, None)]
else:
ret = [('em1', -1, '06-3d-29', None, None, None)]
with mock.patch('psutil._psplatform.net_if_addrs',
return_value=ret) as m:
addr = psutil.net_if_addrs()['em1'][0]
assert m.called
if POSIX:
self.assertEqual(addr.address, '06:3d:29:00:00:00')
else:
self.assertEqual(addr.address, '06-3d-29-00-00-00')
@unittest.skipIf(TRAVIS, "unreliable on TRAVIS") # raises EPERM
def test_net_if_stats(self):
nics = psutil.net_if_stats()
assert nics, nics
all_duplexes = (psutil.NIC_DUPLEX_FULL,
psutil.NIC_DUPLEX_HALF,
psutil.NIC_DUPLEX_UNKNOWN)
for name, stats in nics.items():
self.assertIsInstance(name, str)
isup, duplex, speed, mtu = stats
self.assertIsInstance(isup, bool)
self.assertIn(duplex, all_duplexes)
self.assertIn(duplex, all_duplexes)
self.assertGreaterEqual(speed, 0)
self.assertGreaterEqual(mtu, 0)
@unittest.skipIf(not (LINUX or BSD or MACOS),
"LINUX or BSD or MACOS specific")
def test_net_if_stats_enodev(self):
# See: https://github.com/giampaolo/psutil/issues/1279
with mock.patch('psutil._psutil_posix.net_if_mtu',
side_effect=OSError(errno.ENODEV, "")) as m:
ret = psutil.net_if_stats()
self.assertEqual(ret, {})
assert m.called
@unittest.skipIf(LINUX and not os.path.exists('/proc/diskstats'),
'/proc/diskstats not available on this linux version')
@unittest.skipIf(APPVEYOR and psutil.disk_io_counters() is None,
"unreliable on APPVEYOR") # no visible disks
def test_disk_io_counters(self):
def check_ntuple(nt):
self.assertEqual(nt[0], nt.read_count)
self.assertEqual(nt[1], nt.write_count)
self.assertEqual(nt[2], nt.read_bytes)
self.assertEqual(nt[3], nt.write_bytes)
if not (OPENBSD or NETBSD):
self.assertEqual(nt[4], nt.read_time)
self.assertEqual(nt[5], nt.write_time)
if LINUX:
self.assertEqual(nt[6], nt.read_merged_count)
self.assertEqual(nt[7], nt.write_merged_count)
self.assertEqual(nt[8], nt.busy_time)
elif FREEBSD:
self.assertEqual(nt[6], nt.busy_time)
for name in nt._fields:
assert getattr(nt, name) >= 0, nt
ret = psutil.disk_io_counters(perdisk=False)
assert ret is not None, "no disks on this system?"
check_ntuple(ret)
ret = psutil.disk_io_counters(perdisk=True)
# make sure there are no duplicates
self.assertEqual(len(ret), len(set(ret)))
for key in ret:
assert key, key
check_ntuple(ret[key])
def test_disk_io_counters_no_disks(self):
# Emulate a case where no disks are installed, see:
# https://github.com/giampaolo/psutil/issues/1062
with mock.patch('psutil._psplatform.disk_io_counters',
return_value={}) as m:
self.assertIsNone(psutil.disk_io_counters(perdisk=False))
self.assertEqual(psutil.disk_io_counters(perdisk=True), {})
assert m.called
# can't find users on APPVEYOR or TRAVIS
@unittest.skipIf(APPVEYOR or TRAVIS and not psutil.users(),
"unreliable on APPVEYOR or TRAVIS")
def test_users(self):
users = psutil.users()
self.assertNotEqual(users, [])
for user in users:
assert user.name, user
self.assertIsInstance(user.name, str)
self.assertIsInstance(user.terminal, (str, type(None)))
if user.host is not None:
self.assertIsInstance(user.host, (str, type(None)))
user.terminal
user.host
assert user.started > 0.0, user
datetime.datetime.fromtimestamp(user.started)
if WINDOWS or OPENBSD:
self.assertIsNone(user.pid)
else:
psutil.Process(user.pid)
def test_cpu_stats(self):
# Tested more extensively in per-platform test modules.
infos = psutil.cpu_stats()
self.assertEqual(
infos._fields,
('ctx_switches', 'interrupts', 'soft_interrupts', 'syscalls'))
for name in infos._fields:
value = getattr(infos, name)
self.assertGreaterEqual(value, 0)
# on AIX, ctx_switches is always 0
if not AIX and name in ('ctx_switches', 'interrupts'):
self.assertGreater(value, 0)
@unittest.skipIf(not HAS_CPU_FREQ, "not suported")
def test_cpu_freq(self):
def check_ls(ls):
for nt in ls:
self.assertEqual(nt._fields, ('current', 'min', 'max'))
if nt.max != 0.0:
self.assertLessEqual(nt.current, nt.max)
for name in nt._fields:
value = getattr(nt, name)
self.assertIsInstance(value, (int, long, float))
self.assertGreaterEqual(value, 0)
ls = psutil.cpu_freq(percpu=True)
if TRAVIS and not ls:
raise self.skipTest("skipped on Travis")
if FREEBSD and not ls:
raise self.skipTest("returns empty list on FreeBSD")
assert ls, ls
check_ls([psutil.cpu_freq(percpu=False)])
if LINUX:
self.assertEqual(len(ls), psutil.cpu_count())
@unittest.skipIf(not HAS_GETLOADAVG, "not supported")
def test_getloadavg(self):
loadavg = psutil.getloadavg()
assert len(loadavg) == 3
for load in loadavg:
self.assertIsInstance(load, float)
self.assertGreaterEqual(load, 0.0)
def test_os_constants(self):
names = ["POSIX", "WINDOWS", "LINUX", "MACOS", "FREEBSD", "OPENBSD",
"NETBSD", "BSD", "SUNOS"]
for name in names:
self.assertIsInstance(getattr(psutil, name), bool, msg=name)
if os.name == 'posix':
assert psutil.POSIX
assert not psutil.WINDOWS
names.remove("POSIX")
if "linux" in sys.platform.lower():
assert psutil.LINUX
names.remove("LINUX")
elif "bsd" in sys.platform.lower():
assert psutil.BSD
self.assertEqual([psutil.FREEBSD, psutil.OPENBSD,
psutil.NETBSD].count(True), 1)
names.remove("BSD")
names.remove("FREEBSD")
names.remove("OPENBSD")
names.remove("NETBSD")
elif "sunos" in sys.platform.lower() or \
"solaris" in sys.platform.lower():
assert psutil.SUNOS
names.remove("SUNOS")
elif "darwin" in sys.platform.lower():
assert psutil.MACOS
names.remove("MACOS")
else:
assert psutil.WINDOWS
assert not psutil.POSIX
names.remove("WINDOWS")
# assert all other constants are set to False
for name in names:
self.assertIs(getattr(psutil, name), False, msg=name)
@unittest.skipIf(not HAS_SENSORS_TEMPERATURES, "not supported")
def test_sensors_temperatures(self):
temps = psutil.sensors_temperatures()
for name, entries in temps.items():
self.assertIsInstance(name, str)
for entry in entries:
self.assertIsInstance(entry.label, str)
if entry.current is not None:
self.assertGreaterEqual(entry.current, 0)
if entry.high is not None:
self.assertGreaterEqual(entry.high, 0)
if entry.critical is not None:
self.assertGreaterEqual(entry.critical, 0)
@unittest.skipIf(not HAS_SENSORS_TEMPERATURES, "not supported")
def test_sensors_temperatures_fahreneit(self):
d = {'coretemp': [('label', 50.0, 60.0, 70.0)]}
with mock.patch("psutil._psplatform.sensors_temperatures",
return_value=d) as m:
temps = psutil.sensors_temperatures(
fahrenheit=True)['coretemp'][0]
assert m.called
self.assertEqual(temps.current, 122.0)
self.assertEqual(temps.high, 140.0)
self.assertEqual(temps.critical, 158.0)
@unittest.skipIf(not HAS_SENSORS_BATTERY, "not supported")
@unittest.skipIf(not HAS_BATTERY, "no battery")
def test_sensors_battery(self):
ret = psutil.sensors_battery()
self.assertGreaterEqual(ret.percent, 0)
self.assertLessEqual(ret.percent, 100)
if ret.secsleft not in (psutil.POWER_TIME_UNKNOWN,
psutil.POWER_TIME_UNLIMITED):
self.assertGreaterEqual(ret.secsleft, 0)
else:
if ret.secsleft == psutil.POWER_TIME_UNLIMITED:
self.assertTrue(ret.power_plugged)
self.assertIsInstance(ret.power_plugged, bool)
@unittest.skipIf(not HAS_SENSORS_FANS, "not supported")
def test_sensors_fans(self):
fans = psutil.sensors_fans()
for name, entries in fans.items():
self.assertIsInstance(name, str)
for entry in entries:
self.assertIsInstance(entry.label, str)
self.assertIsInstance(entry.current, (int, long))
self.assertGreaterEqual(entry.current, 0)
if __name__ == '__main__':
from psutil.tests.runner import run
run(__file__)