forked from mirrors/gecko-dev
464 lines
18 KiB
Python
464 lines
18 KiB
Python
#!/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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"""Windows specific tests. These are implicitly run by test_psutil.py."""
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import errno
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import os
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import platform
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import signal
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import subprocess
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import sys
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import time
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import traceback
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from test_psutil import APPVEYOR, WINDOWS
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from test_psutil import get_test_subprocess, reap_children, unittest
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import mock
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try:
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import wmi
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except ImportError:
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wmi = None
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try:
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import win32api
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import win32con
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except ImportError:
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win32api = win32con = None
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from psutil._compat import PY3, callable, long
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import psutil
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cext = psutil._psplatform.cext
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def wrap_exceptions(fun):
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def wrapper(self, *args, **kwargs):
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try:
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return fun(self, *args, **kwargs)
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except OSError as err:
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from psutil._pswindows import ACCESS_DENIED_SET
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if err.errno in ACCESS_DENIED_SET:
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raise psutil.AccessDenied(None, None)
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if err.errno == errno.ESRCH:
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raise psutil.NoSuchProcess(None, None)
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raise
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return wrapper
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@unittest.skipUnless(WINDOWS, "not a Windows system")
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class WindowsSpecificTestCase(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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cls.pid = get_test_subprocess().pid
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@classmethod
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def tearDownClass(cls):
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reap_children()
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def test_issue_24(self):
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p = psutil.Process(0)
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self.assertRaises(psutil.AccessDenied, p.kill)
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def test_special_pid(self):
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p = psutil.Process(4)
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self.assertEqual(p.name(), 'System')
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# use __str__ to access all common Process properties to check
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# that nothing strange happens
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str(p)
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p.username()
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self.assertTrue(p.create_time() >= 0.0)
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try:
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rss, vms = p.memory_info()
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except psutil.AccessDenied:
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# expected on Windows Vista and Windows 7
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if not platform.uname()[1] in ('vista', 'win-7', 'win7'):
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raise
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else:
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self.assertTrue(rss > 0)
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def test_send_signal(self):
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p = psutil.Process(self.pid)
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self.assertRaises(ValueError, p.send_signal, signal.SIGINT)
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def test_nic_names(self):
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p = subprocess.Popen(['ipconfig', '/all'], stdout=subprocess.PIPE)
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out = p.communicate()[0]
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if PY3:
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out = str(out, sys.stdout.encoding)
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nics = psutil.net_io_counters(pernic=True).keys()
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for nic in nics:
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if "pseudo-interface" in nic.replace(' ', '-').lower():
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continue
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if nic not in out:
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self.fail(
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"%r nic wasn't found in 'ipconfig /all' output" % nic)
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def test_exe(self):
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for p in psutil.process_iter():
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try:
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self.assertEqual(os.path.basename(p.exe()), p.name())
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except psutil.Error:
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pass
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# --- Process class tests
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@unittest.skipIf(wmi is None, "wmi module is not installed")
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def test_process_name(self):
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w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
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p = psutil.Process(self.pid)
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self.assertEqual(p.name(), w.Caption)
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@unittest.skipIf(wmi is None, "wmi module is not installed")
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def test_process_exe(self):
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w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
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p = psutil.Process(self.pid)
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# Note: wmi reports the exe as a lower case string.
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# Being Windows paths case-insensitive we ignore that.
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self.assertEqual(p.exe().lower(), w.ExecutablePath.lower())
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@unittest.skipIf(wmi is None, "wmi module is not installed")
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def test_process_cmdline(self):
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w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
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p = psutil.Process(self.pid)
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self.assertEqual(' '.join(p.cmdline()),
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w.CommandLine.replace('"', ''))
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@unittest.skipIf(wmi is None, "wmi module is not installed")
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def test_process_username(self):
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w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
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p = psutil.Process(self.pid)
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domain, _, username = w.GetOwner()
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username = "%s\\%s" % (domain, username)
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self.assertEqual(p.username(), username)
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@unittest.skipIf(wmi is None, "wmi module is not installed")
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def test_process_rss_memory(self):
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time.sleep(0.1)
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w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
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p = psutil.Process(self.pid)
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rss = p.memory_info().rss
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self.assertEqual(rss, int(w.WorkingSetSize))
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@unittest.skipIf(wmi is None, "wmi module is not installed")
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def test_process_vms_memory(self):
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time.sleep(0.1)
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w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
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p = psutil.Process(self.pid)
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vms = p.memory_info().vms
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# http://msdn.microsoft.com/en-us/library/aa394372(VS.85).aspx
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# ...claims that PageFileUsage is represented in Kilo
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# bytes but funnily enough on certain platforms bytes are
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# returned instead.
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wmi_usage = int(w.PageFileUsage)
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if (vms != wmi_usage) and (vms != wmi_usage * 1024):
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self.fail("wmi=%s, psutil=%s" % (wmi_usage, vms))
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@unittest.skipIf(wmi is None, "wmi module is not installed")
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def test_process_create_time(self):
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w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
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p = psutil.Process(self.pid)
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wmic_create = str(w.CreationDate.split('.')[0])
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psutil_create = time.strftime("%Y%m%d%H%M%S",
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time.localtime(p.create_time()))
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self.assertEqual(wmic_create, psutil_create)
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# --- psutil namespace functions and constants tests
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@unittest.skipUnless('NUMBER_OF_PROCESSORS' in os.environ,
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'NUMBER_OF_PROCESSORS env var is not available')
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def test_cpu_count(self):
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num_cpus = int(os.environ['NUMBER_OF_PROCESSORS'])
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self.assertEqual(num_cpus, psutil.cpu_count())
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@unittest.skipIf(wmi is None, "wmi module is not installed")
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def test_total_phymem(self):
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w = wmi.WMI().Win32_ComputerSystem()[0]
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self.assertEqual(int(w.TotalPhysicalMemory),
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psutil.virtual_memory().total)
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# @unittest.skipIf(wmi is None, "wmi module is not installed")
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# def test__UPTIME(self):
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# # _UPTIME constant is not public but it is used internally
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# # as value to return for pid 0 creation time.
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# # WMI behaves the same.
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# w = wmi.WMI().Win32_Process(ProcessId=self.pid)[0]
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# p = psutil.Process(0)
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# wmic_create = str(w.CreationDate.split('.')[0])
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# psutil_create = time.strftime("%Y%m%d%H%M%S",
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# time.localtime(p.create_time()))
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#
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# Note: this test is not very reliable
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@unittest.skipIf(wmi is None, "wmi module is not installed")
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@unittest.skipIf(APPVEYOR, "test not relieable on appveyor")
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def test_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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w = wmi.WMI().Win32_Process()
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wmi_pids = set([x.ProcessId for x in w])
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psutil_pids = set(psutil.pids())
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self.assertEqual(wmi_pids, psutil_pids)
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@unittest.skipIf(wmi is None, "wmi module is not installed")
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def test_disks(self):
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ps_parts = psutil.disk_partitions(all=True)
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wmi_parts = wmi.WMI().Win32_LogicalDisk()
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for ps_part in ps_parts:
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for wmi_part in wmi_parts:
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if ps_part.device.replace('\\', '') == wmi_part.DeviceID:
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if not ps_part.mountpoint:
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# this is usually a CD-ROM with no disk inserted
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break
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try:
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usage = psutil.disk_usage(ps_part.mountpoint)
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except OSError as err:
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if err.errno == errno.ENOENT:
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# usually this is the floppy
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break
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else:
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raise
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self.assertEqual(usage.total, int(wmi_part.Size))
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wmi_free = int(wmi_part.FreeSpace)
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self.assertEqual(usage.free, wmi_free)
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# 10 MB tollerance
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if abs(usage.free - wmi_free) > 10 * 1024 * 1024:
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self.fail("psutil=%s, wmi=%s" % (
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usage.free, wmi_free))
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break
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else:
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self.fail("can't find partition %s" % repr(ps_part))
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@unittest.skipIf(win32api is None, "pywin32 module is not installed")
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def test_num_handles(self):
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p = psutil.Process(os.getpid())
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before = p.num_handles()
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handle = win32api.OpenProcess(win32con.PROCESS_QUERY_INFORMATION,
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win32con.FALSE, os.getpid())
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after = p.num_handles()
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self.assertEqual(after, before + 1)
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win32api.CloseHandle(handle)
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self.assertEqual(p.num_handles(), before)
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@unittest.skipIf(win32api is None, "pywin32 module is not installed")
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def test_num_handles_2(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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attr()
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else:
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attr
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p = psutil.Process(self.pid)
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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 in ('terminate', 'kill', 'suspend', 'resume',
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'nice', 'send_signal', 'wait', 'children',
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'as_dict'):
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continue
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else:
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try:
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call(p, name)
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num1 = p.num_handles()
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call(p, name)
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num2 = p.num_handles()
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except (psutil.NoSuchProcess, psutil.AccessDenied):
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pass
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else:
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if num2 > num1:
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fail = \
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"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_name_always_available(self):
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# On Windows name() is never supposed to raise AccessDenied,
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# see https://github.com/giampaolo/psutil/issues/627
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for p in psutil.process_iter():
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try:
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p.name()
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except psutil.NoSuchProcess():
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pass
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@unittest.skipUnless(WINDOWS, "not a Windows system")
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class TestDualProcessImplementation(unittest.TestCase):
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"""
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Certain APIs on Windows have 2 internal implementations, one
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based on documented Windows APIs, another one based
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NtQuerySystemInformation() which gets called as fallback in
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case the first fails because of limited permission error.
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Here we test that the two methods return the exact same value,
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see:
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https://github.com/giampaolo/psutil/issues/304
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"""
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fun_names = [
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# function name, tolerance
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('proc_cpu_times', 0.2),
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('proc_create_time', 0.5),
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('proc_num_handles', 1), # 1 because impl #1 opens a handle
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('proc_memory_info', 1024), # KB
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('proc_io_counters', 0),
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]
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def test_compare_values(self):
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def assert_ge_0(obj):
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if isinstance(obj, tuple):
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for value in obj:
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self.assertGreaterEqual(value, 0, msg=obj)
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elif isinstance(obj, (int, long, float)):
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self.assertGreaterEqual(obj, 0)
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else:
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assert 0 # case not handled which needs to be fixed
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def compare_with_tolerance(ret1, ret2, tolerance):
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if ret1 == ret2:
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return
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else:
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if isinstance(ret2, (int, long, float)):
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diff = abs(ret1 - ret2)
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self.assertLessEqual(diff, tolerance)
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elif isinstance(ret2, tuple):
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for a, b in zip(ret1, ret2):
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diff = abs(a - b)
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self.assertLessEqual(diff, tolerance)
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from psutil._pswindows import ntpinfo
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failures = []
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for p in psutil.process_iter():
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try:
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nt = ntpinfo(*cext.proc_info(p.pid))
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except psutil.NoSuchProcess:
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continue
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assert_ge_0(nt)
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for name, tolerance in self.fun_names:
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if name == 'proc_memory_info' and p.pid == os.getpid():
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continue
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if name == 'proc_create_time' and p.pid in (0, 4):
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continue
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meth = wrap_exceptions(getattr(cext, name))
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try:
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ret = meth(p.pid)
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except (psutil.NoSuchProcess, psutil.AccessDenied):
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continue
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# compare values
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try:
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if name == 'proc_cpu_times':
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compare_with_tolerance(ret[0], nt.user_time, tolerance)
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compare_with_tolerance(ret[1],
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nt.kernel_time, tolerance)
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elif name == 'proc_create_time':
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compare_with_tolerance(ret, nt.create_time, tolerance)
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elif name == 'proc_num_handles':
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compare_with_tolerance(ret, nt.num_handles, tolerance)
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elif name == 'proc_io_counters':
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compare_with_tolerance(ret[0], nt.io_rcount, tolerance)
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compare_with_tolerance(ret[1], nt.io_wcount, tolerance)
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compare_with_tolerance(ret[2], nt.io_rbytes, tolerance)
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compare_with_tolerance(ret[3], nt.io_wbytes, tolerance)
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elif name == 'proc_memory_info':
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try:
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rawtupl = cext.proc_memory_info_2(p.pid)
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except psutil.NoSuchProcess:
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continue
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compare_with_tolerance(ret, rawtupl, tolerance)
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except AssertionError:
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trace = traceback.format_exc()
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msg = '%s\npid=%s, method=%r, ret_1=%r, ret_2=%r' % (
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trace, p.pid, name, ret, nt)
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failures.append(msg)
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break
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if failures:
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self.fail('\n\n'.join(failures))
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# ---
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# same tests as above but mimicks the AccessDenied failure of
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# the first (fast) method failing with AD.
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# TODO: currently does not take tolerance into account.
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def test_name(self):
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name = psutil.Process().name()
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with mock.patch("psutil._psplatform.cext.proc_exe",
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side_effect=psutil.AccessDenied(os.getpid())) as fun:
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psutil.Process().name() == name
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assert fun.called
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def test_memory_info(self):
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mem = psutil.Process().memory_info()
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with mock.patch("psutil._psplatform.cext.proc_memory_info",
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side_effect=OSError(errno.EPERM, "msg")) as fun:
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psutil.Process().memory_info() == mem
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assert fun.called
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def test_create_time(self):
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ctime = psutil.Process().create_time()
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with mock.patch("psutil._psplatform.cext.proc_create_time",
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side_effect=OSError(errno.EPERM, "msg")) as fun:
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psutil.Process().create_time() == ctime
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assert fun.called
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def test_cpu_times(self):
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cpu_times = psutil.Process().cpu_times()
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with mock.patch("psutil._psplatform.cext.proc_cpu_times",
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side_effect=OSError(errno.EPERM, "msg")) as fun:
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psutil.Process().cpu_times() == cpu_times
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assert fun.called
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def test_io_counters(self):
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io_counters = psutil.Process().io_counters()
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with mock.patch("psutil._psplatform.cext.proc_io_counters",
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side_effect=OSError(errno.EPERM, "msg")) as fun:
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psutil.Process().io_counters() == io_counters
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assert fun.called
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def test_num_handles(self):
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io_counters = psutil.Process().io_counters()
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with mock.patch("psutil._psplatform.cext.proc_io_counters",
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side_effect=OSError(errno.EPERM, "msg")) as fun:
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psutil.Process().io_counters() == io_counters
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assert fun.called
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# --- other tests
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def test_compare_name_exe(self):
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for p in psutil.process_iter():
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try:
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a = os.path.basename(p.exe())
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b = p.name()
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except (psutil.NoSuchProcess, psutil.AccessDenied):
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pass
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else:
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self.assertEqual(a, b)
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def test_zombies(self):
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# test that NPS is raised by the 2nd implementation in case a
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# process no longer exists
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ZOMBIE_PID = max(psutil.pids()) + 5000
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for name, _ in self.fun_names:
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meth = wrap_exceptions(getattr(cext, name))
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self.assertRaises(psutil.NoSuchProcess, meth, ZOMBIE_PID)
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def main():
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test_suite = unittest.TestSuite()
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test_suite.addTest(unittest.makeSuite(WindowsSpecificTestCase))
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test_suite.addTest(unittest.makeSuite(TestDualProcessImplementation))
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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 main():
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sys.exit(1)
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