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#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# 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.

"""
Miscellaneous tests.
"""

import ast
import collections
import errno
import json
import os
import pickle
import socket
import stat
import sys

from psutil import LINUX
from psutil import POSIX
from psutil import WINDOWS
from psutil._common import memoize
from psutil._common import memoize_when_activated
from psutil._common import supports_ipv6
from psutil._common import wrap_numbers
from psutil._compat import PY3
from psutil.tests import APPVEYOR
from psutil.tests import CI_TESTING
from psutil.tests import HAS_BATTERY
from psutil.tests import HAS_MEMORY_MAPS
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 import_module_by_path
from psutil.tests import mock
from psutil.tests import PsutilTestCase
from psutil.tests import PYTHON_EXE
from psutil.tests import reload_module
from psutil.tests import ROOT_DIR
from psutil.tests import SCRIPTS_DIR
from psutil.tests import sh
from psutil.tests import unittest
import psutil
import psutil.tests


PYTHON_39 = sys.version_info[:2] == (3, 9)


# ===================================================================
# --- Misc / generic tests.
# ===================================================================


class TestMisc(PsutilTestCase):

    def test_process__repr__(self, func=repr):
        p = psutil.Process(self.spawn_testproc().pid)
        r = func(p)
        self.assertIn("psutil.Process", r)
        self.assertIn("pid=%s" % p.pid, r)
        self.assertIn("name='%s'" % str(p.name()),
                      r.replace("name=u'", "name='"))
        self.assertIn("status=", r)
        self.assertNotIn("exitcode=", r)
        p.terminate()
        p.wait()
        r = func(p)
        self.assertIn("status='terminated'", r)
        self.assertIn("exitcode=", r)

        with mock.patch.object(psutil.Process, "name",
                               side_effect=psutil.ZombieProcess(os.getpid())):
            p = psutil.Process()
            r = func(p)
            self.assertIn("pid=%s" % p.pid, r)
            self.assertIn("status='zombie'", r)
            self.assertNotIn("name=", r)
        with mock.patch.object(psutil.Process, "name",
                               side_effect=psutil.NoSuchProcess(os.getpid())):
            p = psutil.Process()
            r = func(p)
            self.assertIn("pid=%s" % p.pid, r)
            self.assertIn("terminated", r)
            self.assertNotIn("name=", r)
        with mock.patch.object(psutil.Process, "name",
                               side_effect=psutil.AccessDenied(os.getpid())):
            p = psutil.Process()
            r = func(p)
            self.assertIn("pid=%s" % p.pid, r)
            self.assertNotIn("name=", r)

    def test_process__str__(self):
        self.test_process__repr__(func=str)

    def test_no_such_process__repr__(self, func=repr):
        self.assertEqual(
            repr(psutil.NoSuchProcess(321)),
            "psutil.NoSuchProcess process no longer exists (pid=321)")
        self.assertEqual(
            repr(psutil.NoSuchProcess(321, name='foo')),
            "psutil.NoSuchProcess process no longer exists (pid=321, "
            "name='foo')")
        self.assertEqual(
            repr(psutil.NoSuchProcess(321, msg='foo')),
            "psutil.NoSuchProcess foo")

    def test_zombie_process__repr__(self, func=repr):
        self.assertEqual(
            repr(psutil.ZombieProcess(321)),
            "psutil.ZombieProcess process still exists but it's a zombie "
            "(pid=321)")
        self.assertEqual(
            repr(psutil.ZombieProcess(321, name='foo')),
            "psutil.ZombieProcess process still exists but it's a zombie "
            "(pid=321, name='foo')")
        self.assertEqual(
            repr(psutil.ZombieProcess(321, name='foo', ppid=1)),
            "psutil.ZombieProcess process still exists but it's a zombie "
            "(pid=321, name='foo', ppid=1)")
        self.assertEqual(
            repr(psutil.ZombieProcess(321, msg='foo')),
            "psutil.ZombieProcess foo")

    def test_access_denied__repr__(self, func=repr):
        self.assertEqual(
            repr(psutil.AccessDenied(321)),
            "psutil.AccessDenied (pid=321)")
        self.assertEqual(
            repr(psutil.AccessDenied(321, name='foo')),
            "psutil.AccessDenied (pid=321, name='foo')")
        self.assertEqual(
            repr(psutil.AccessDenied(321, msg='foo')),
            "psutil.AccessDenied foo")

    def test_timeout_expired__repr__(self, func=repr):
        self.assertEqual(
            repr(psutil.TimeoutExpired(321)),
            "psutil.TimeoutExpired timeout after 321 seconds")
        self.assertEqual(
            repr(psutil.TimeoutExpired(321, pid=111)),
            "psutil.TimeoutExpired timeout after 321 seconds (pid=111)")
        self.assertEqual(
            repr(psutil.TimeoutExpired(321, pid=111, name='foo')),
            "psutil.TimeoutExpired timeout after 321 seconds "
            "(pid=111, name='foo')")

    def test_process__eq__(self):
        p1 = psutil.Process()
        p2 = psutil.Process()
        self.assertEqual(p1, p2)
        p2._ident = (0, 0)
        self.assertNotEqual(p1, p2)
        self.assertNotEqual(p1, 'foo')

    def test_process__hash__(self):
        s = set([psutil.Process(), psutil.Process()])
        self.assertEqual(len(s), 1)

    def test__all__(self):
        dir_psutil = dir(psutil)
        for name in dir_psutil:
            if name in ('long', 'tests', 'test', 'PermissionError',
                        'ProcessLookupError'):
                continue
            if not name.startswith('_'):
                try:
                    __import__(name)
                except ImportError:
                    if name not in psutil.__all__:
                        fun = getattr(psutil, name)
                        if fun is None:
                            continue
                        if (fun.__doc__ is not None and
                                'deprecated' not in fun.__doc__.lower()):
                            self.fail('%r not in psutil.__all__' % name)

        # Import 'star' will break if __all__ is inconsistent, see:
        # https://github.com/giampaolo/psutil/issues/656
        # Can't do `from psutil import *` as it won't work on python 3
        # so we simply iterate over __all__.
        for name in psutil.__all__:
            self.assertIn(name, dir_psutil)

    def test_version(self):
        self.assertEqual('.'.join([str(x) for x in psutil.version_info]),
                         psutil.__version__)

    def test_process_as_dict_no_new_names(self):
        # See https://github.com/giampaolo/psutil/issues/813
        p = psutil.Process()
        p.foo = '1'
        self.assertNotIn('foo', p.as_dict())

    def test_memoize(self):
        @memoize
        def foo(*args, **kwargs):
            "foo docstring"
            calls.append(None)
            return (args, kwargs)

        calls = []
        # no args
        for x in range(2):
            ret = foo()
            expected = ((), {})
            self.assertEqual(ret, expected)
            self.assertEqual(len(calls), 1)
        # with args
        for x in range(2):
            ret = foo(1)
            expected = ((1, ), {})
            self.assertEqual(ret, expected)
            self.assertEqual(len(calls), 2)
        # with args + kwargs
        for x in range(2):
            ret = foo(1, bar=2)
            expected = ((1, ), {'bar': 2})
            self.assertEqual(ret, expected)
            self.assertEqual(len(calls), 3)
        # clear cache
        foo.cache_clear()
        ret = foo()
        expected = ((), {})
        self.assertEqual(ret, expected)
        self.assertEqual(len(calls), 4)
        # docstring
        self.assertEqual(foo.__doc__, "foo docstring")

    def test_memoize_when_activated(self):
        class Foo:

            @memoize_when_activated
            def foo(self):
                calls.append(None)

        f = Foo()
        calls = []
        f.foo()
        f.foo()
        self.assertEqual(len(calls), 2)

        # activate
        calls = []
        f.foo.cache_activate(f)
        f.foo()
        f.foo()
        self.assertEqual(len(calls), 1)

        # deactivate
        calls = []
        f.foo.cache_deactivate(f)
        f.foo()
        f.foo()
        self.assertEqual(len(calls), 2)

    def test_parse_environ_block(self):
        from psutil._common import parse_environ_block

        def k(s):
            return s.upper() if WINDOWS else s

        self.assertEqual(parse_environ_block("a=1\0"),
                         {k("a"): "1"})
        self.assertEqual(parse_environ_block("a=1\0b=2\0\0"),
                         {k("a"): "1", k("b"): "2"})
        self.assertEqual(parse_environ_block("a=1\0b=\0\0"),
                         {k("a"): "1", k("b"): ""})
        # ignore everything after \0\0
        self.assertEqual(parse_environ_block("a=1\0b=2\0\0c=3\0"),
                         {k("a"): "1", k("b"): "2"})
        # ignore everything that is not an assignment
        self.assertEqual(parse_environ_block("xxx\0a=1\0"), {k("a"): "1"})
        self.assertEqual(parse_environ_block("a=1\0=b=2\0"), {k("a"): "1"})
        # do not fail if the block is incomplete
        self.assertEqual(parse_environ_block("a=1\0b=2"), {k("a"): "1"})

    def test_supports_ipv6(self):
        self.addCleanup(supports_ipv6.cache_clear)
        if supports_ipv6():
            with mock.patch('psutil._common.socket') as s:
                s.has_ipv6 = False
                supports_ipv6.cache_clear()
                assert not supports_ipv6()

            supports_ipv6.cache_clear()
            with mock.patch('psutil._common.socket.socket',
                            side_effect=socket.error) as s:
                assert not supports_ipv6()
                assert s.called

            supports_ipv6.cache_clear()
            with mock.patch('psutil._common.socket.socket',
                            side_effect=socket.gaierror) as s:
                assert not supports_ipv6()
                supports_ipv6.cache_clear()
                assert s.called

            supports_ipv6.cache_clear()
            with mock.patch('psutil._common.socket.socket.bind',
                            side_effect=socket.gaierror) as s:
                assert not supports_ipv6()
                supports_ipv6.cache_clear()
                assert s.called
        else:
            with self.assertRaises(Exception):
                sock = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
                try:
                    sock.bind(("::1", 0))
                finally:
                    sock.close()

    def test_isfile_strict(self):
        from psutil._common import isfile_strict
        this_file = os.path.abspath(__file__)
        assert isfile_strict(this_file)
        assert not isfile_strict(os.path.dirname(this_file))
        with mock.patch('psutil._common.os.stat',
                        side_effect=OSError(errno.EPERM, "foo")):
            self.assertRaises(OSError, isfile_strict, this_file)
        with mock.patch('psutil._common.os.stat',
                        side_effect=OSError(errno.EACCES, "foo")):
            self.assertRaises(OSError, isfile_strict, this_file)
        with mock.patch('psutil._common.os.stat',
                        side_effect=OSError(errno.ENOENT, "foo")):
            assert not isfile_strict(this_file)
        with mock.patch('psutil._common.stat.S_ISREG', return_value=False):
            assert not isfile_strict(this_file)

    def test_serialization(self):
        def check(ret):
            if json is not None:
                json.loads(json.dumps(ret))
            a = pickle.dumps(ret)
            b = pickle.loads(a)
            self.assertEqual(ret, b)

        check(psutil.Process().as_dict())
        check(psutil.virtual_memory())
        check(psutil.swap_memory())
        check(psutil.cpu_times())
        check(psutil.cpu_times_percent(interval=0))
        check(psutil.net_io_counters())
        if LINUX and not os.path.exists('/proc/diskstats'):
            pass
        else:
            if not APPVEYOR:
                check(psutil.disk_io_counters())
        check(psutil.disk_partitions())
        check(psutil.disk_usage(os.getcwd()))
        check(psutil.users())

    def test_setup_script(self):
        setup_py = os.path.join(ROOT_DIR, 'setup.py')
        if CI_TESTING and not os.path.exists(setup_py):
            return self.skipTest("can't find setup.py")
        module = import_module_by_path(setup_py)
        self.assertRaises(SystemExit, module.setup)
        self.assertEqual(module.get_version(), psutil.__version__)

    def test_ad_on_process_creation(self):
        # We are supposed to be able to instantiate Process also in case
        # of zombie processes or access denied.
        with mock.patch.object(psutil.Process, 'create_time',
                               side_effect=psutil.AccessDenied) as meth:
            psutil.Process()
            assert meth.called
        with mock.patch.object(psutil.Process, 'create_time',
                               side_effect=psutil.ZombieProcess(1)) as meth:
            psutil.Process()
            assert meth.called
        with mock.patch.object(psutil.Process, 'create_time',
                               side_effect=ValueError) as meth:
            with self.assertRaises(ValueError):
                psutil.Process()
            assert meth.called

    def test_sanity_version_check(self):
        # see: https://github.com/giampaolo/psutil/issues/564
        with mock.patch(
                "psutil._psplatform.cext.version", return_value="0.0.0"):
            with self.assertRaises(ImportError) as cm:
                reload_module(psutil)
            self.assertIn("version conflict", str(cm.exception).lower())


# ===================================================================
# --- Tests for wrap_numbers() function.
# ===================================================================


nt = collections.namedtuple('foo', 'a b c')


class TestWrapNumbers(PsutilTestCase):

    def setUp(self):
        wrap_numbers.cache_clear()

    tearDown = setUp

    def test_first_call(self):
        input = {'disk1': nt(5, 5, 5)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)

    def test_input_hasnt_changed(self):
        input = {'disk1': nt(5, 5, 5)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)

    def test_increase_but_no_wrap(self):
        input = {'disk1': nt(5, 5, 5)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
        input = {'disk1': nt(10, 15, 20)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
        input = {'disk1': nt(20, 25, 30)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
        input = {'disk1': nt(20, 25, 30)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)

    def test_wrap(self):
        # let's say 100 is the threshold
        input = {'disk1': nt(100, 100, 100)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
        # first wrap restarts from 10
        input = {'disk1': nt(100, 100, 10)}
        self.assertEqual(wrap_numbers(input, 'disk_io'),
                         {'disk1': nt(100, 100, 110)})
        # then it remains the same
        input = {'disk1': nt(100, 100, 10)}
        self.assertEqual(wrap_numbers(input, 'disk_io'),
                         {'disk1': nt(100, 100, 110)})
        # then it goes up
        input = {'disk1': nt(100, 100, 90)}
        self.assertEqual(wrap_numbers(input, 'disk_io'),
                         {'disk1': nt(100, 100, 190)})
        # then it wraps again
        input = {'disk1': nt(100, 100, 20)}
        self.assertEqual(wrap_numbers(input, 'disk_io'),
                         {'disk1': nt(100, 100, 210)})
        # and remains the same
        input = {'disk1': nt(100, 100, 20)}
        self.assertEqual(wrap_numbers(input, 'disk_io'),
                         {'disk1': nt(100, 100, 210)})
        # now wrap another num
        input = {'disk1': nt(50, 100, 20)}
        self.assertEqual(wrap_numbers(input, 'disk_io'),
                         {'disk1': nt(150, 100, 210)})
        # and again
        input = {'disk1': nt(40, 100, 20)}
        self.assertEqual(wrap_numbers(input, 'disk_io'),
                         {'disk1': nt(190, 100, 210)})
        # keep it the same
        input = {'disk1': nt(40, 100, 20)}
        self.assertEqual(wrap_numbers(input, 'disk_io'),
                         {'disk1': nt(190, 100, 210)})

    def test_changing_keys(self):
        # Emulate a case where the second call to disk_io()
        # (or whatever) provides a new disk, then the new disk
        # disappears on the third call.
        input = {'disk1': nt(5, 5, 5)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
        input = {'disk1': nt(5, 5, 5),
                 'disk2': nt(7, 7, 7)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
        input = {'disk1': nt(8, 8, 8)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)

    def test_changing_keys_w_wrap(self):
        input = {'disk1': nt(50, 50, 50),
                 'disk2': nt(100, 100, 100)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
        # disk 2 wraps
        input = {'disk1': nt(50, 50, 50),
                 'disk2': nt(100, 100, 10)}
        self.assertEqual(wrap_numbers(input, 'disk_io'),
                         {'disk1': nt(50, 50, 50),
                          'disk2': nt(100, 100, 110)})
        # disk 2 disappears
        input = {'disk1': nt(50, 50, 50)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)

        # then it appears again; the old wrap is supposed to be
        # gone.
        input = {'disk1': nt(50, 50, 50),
                 'disk2': nt(100, 100, 100)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
        # remains the same
        input = {'disk1': nt(50, 50, 50),
                 'disk2': nt(100, 100, 100)}
        self.assertEqual(wrap_numbers(input, 'disk_io'), input)
        # and then wraps again
        input = {'disk1': nt(50, 50, 50),
                 'disk2': nt(100, 100, 10)}
        self.assertEqual(wrap_numbers(input, 'disk_io'),
                         {'disk1': nt(50, 50, 50),
                          'disk2': nt(100, 100, 110)})

    def test_real_data(self):
        d = {'nvme0n1': (300, 508, 640, 1571, 5970, 1987, 2049, 451751, 47048),
             'nvme0n1p1': (1171, 2, 5600256, 1024, 516, 0, 0, 0, 8),
             'nvme0n1p2': (54, 54, 2396160, 5165056, 4, 24, 30, 1207, 28),
             'nvme0n1p3': (2389, 4539, 5154, 150, 4828, 1844, 2019, 398, 348)}
        self.assertEqual(wrap_numbers(d, 'disk_io'), d)
        self.assertEqual(wrap_numbers(d, 'disk_io'), d)
        # decrease this   ↓
        d = {'nvme0n1': (100, 508, 640, 1571, 5970, 1987, 2049, 451751, 47048),
             'nvme0n1p1': (1171, 2, 5600256, 1024, 516, 0, 0, 0, 8),
             'nvme0n1p2': (54, 54, 2396160, 5165056, 4, 24, 30, 1207, 28),
             'nvme0n1p3': (2389, 4539, 5154, 150, 4828, 1844, 2019, 398, 348)}
        out = wrap_numbers(d, 'disk_io')
        self.assertEqual(out['nvme0n1'][0], 400)

    # --- cache tests

    def test_cache_first_call(self):
        input = {'disk1': nt(5, 5, 5)}
        wrap_numbers(input, 'disk_io')
        cache = wrap_numbers.cache_info()
        self.assertEqual(cache[0], {'disk_io': input})
        self.assertEqual(cache[1], {'disk_io': {}})
        self.assertEqual(cache[2], {'disk_io': {}})

    def test_cache_call_twice(self):
        input = {'disk1': nt(5, 5, 5)}
        wrap_numbers(input, 'disk_io')
        input = {'disk1': nt(10, 10, 10)}
        wrap_numbers(input, 'disk_io')
        cache = wrap_numbers.cache_info()
        self.assertEqual(cache[0], {'disk_io': input})
        self.assertEqual(
            cache[1],
            {'disk_io': {('disk1', 0): 0, ('disk1', 1): 0, ('disk1', 2): 0}})
        self.assertEqual(cache[2], {'disk_io': {}})

    def test_cache_wrap(self):
        # let's say 100 is the threshold
        input = {'disk1': nt(100, 100, 100)}
        wrap_numbers(input, 'disk_io')

        # first wrap restarts from 10
        input = {'disk1': nt(100, 100, 10)}
        wrap_numbers(input, 'disk_io')
        cache = wrap_numbers.cache_info()
        self.assertEqual(cache[0], {'disk_io': input})
        self.assertEqual(
            cache[1],
            {'disk_io': {('disk1', 0): 0, ('disk1', 1): 0, ('disk1', 2): 100}})
        self.assertEqual(cache[2], {'disk_io': {'disk1': set([('disk1', 2)])}})

        def assert_():
            cache = wrap_numbers.cache_info()
            self.assertEqual(
                cache[1],
                {'disk_io': {('disk1', 0): 0, ('disk1', 1): 0,
                             ('disk1', 2): 100}})
            self.assertEqual(cache[2],
                             {'disk_io': {'disk1': set([('disk1', 2)])}})

        # then it remains the same
        input = {'disk1': nt(100, 100, 10)}
        wrap_numbers(input, 'disk_io')
        cache = wrap_numbers.cache_info()
        self.assertEqual(cache[0], {'disk_io': input})
        assert_()

        # then it goes up
        input = {'disk1': nt(100, 100, 90)}
        wrap_numbers(input, 'disk_io')
        cache = wrap_numbers.cache_info()
        self.assertEqual(cache[0], {'disk_io': input})
        assert_()

        # then it wraps again
        input = {'disk1': nt(100, 100, 20)}
        wrap_numbers(input, 'disk_io')
        cache = wrap_numbers.cache_info()
        self.assertEqual(cache[0], {'disk_io': input})
        self.assertEqual(
            cache[1],
            {'disk_io': {('disk1', 0): 0, ('disk1', 1): 0, ('disk1', 2): 190}})
        self.assertEqual(cache[2], {'disk_io': {'disk1': set([('disk1', 2)])}})

    def test_cache_changing_keys(self):
        input = {'disk1': nt(5, 5, 5)}
        wrap_numbers(input, 'disk_io')
        input = {'disk1': nt(5, 5, 5),
                 'disk2': nt(7, 7, 7)}
        wrap_numbers(input, 'disk_io')
        cache = wrap_numbers.cache_info()
        self.assertEqual(cache[0], {'disk_io': input})
        self.assertEqual(
            cache[1],
            {'disk_io': {('disk1', 0): 0, ('disk1', 1): 0, ('disk1', 2): 0}})
        self.assertEqual(cache[2], {'disk_io': {}})

    def test_cache_clear(self):
        input = {'disk1': nt(5, 5, 5)}
        wrap_numbers(input, 'disk_io')
        wrap_numbers(input, 'disk_io')
        wrap_numbers.cache_clear('disk_io')
        self.assertEqual(wrap_numbers.cache_info(), ({}, {}, {}))
        wrap_numbers.cache_clear('disk_io')
        wrap_numbers.cache_clear('?!?')

    @unittest.skipIf(not HAS_NET_IO_COUNTERS, 'not supported')
    def test_cache_clear_public_apis(self):
        if not psutil.disk_io_counters() or not psutil.net_io_counters():
            return self.skipTest("no disks or NICs available")
        psutil.disk_io_counters()
        psutil.net_io_counters()
        caches = wrap_numbers.cache_info()
        for cache in caches:
            self.assertIn('psutil.disk_io_counters', cache)
            self.assertIn('psutil.net_io_counters', cache)

        psutil.disk_io_counters.cache_clear()
        caches = wrap_numbers.cache_info()
        for cache in caches:
            self.assertIn('psutil.net_io_counters', cache)
            self.assertNotIn('psutil.disk_io_counters', cache)

        psutil.net_io_counters.cache_clear()
        caches = wrap_numbers.cache_info()
        self.assertEqual(caches, ({}, {}, {}))


# ===================================================================
# --- Example script tests
# ===================================================================


@unittest.skipIf(not os.path.exists(SCRIPTS_DIR),
                 "can't locate scripts directory")
class TestScripts(PsutilTestCase):
    """Tests for scripts in the "scripts" directory."""

    @staticmethod
    def assert_stdout(exe, *args, **kwargs):
        exe = '%s' % os.path.join(SCRIPTS_DIR, exe)
        cmd = [PYTHON_EXE, exe]
        for arg in args:
            cmd.append(arg)
        try:
            out = sh(cmd, **kwargs).strip()
        except RuntimeError as err:
            if 'AccessDenied' in str(err):
                return str(err)
            else:
                raise
        assert out, out
        return out

    @staticmethod
    def assert_syntax(exe, args=None):
        exe = os.path.join(SCRIPTS_DIR, exe)
        if PY3:
            f = open(exe, 'rt', encoding='utf8')
        else:
            f = open(exe, 'rt')
        with f:
            src = f.read()
        ast.parse(src)

    def test_coverage(self):
        # make sure all example scripts have a test method defined
        meths = dir(self)
        for name in os.listdir(SCRIPTS_DIR):
            if name.endswith('.py'):
                if 'test_' + os.path.splitext(name)[0] not in meths:
                    # self.assert_stdout(name)
                    self.fail('no test defined for %r script'
                              % os.path.join(SCRIPTS_DIR, name))

    @unittest.skipIf(not POSIX, "POSIX only")
    def test_executable(self):
        for name in os.listdir(SCRIPTS_DIR):
            if name.endswith('.py'):
                path = os.path.join(SCRIPTS_DIR, name)
                if not stat.S_IXUSR & os.stat(path)[stat.ST_MODE]:
                    self.fail('%r is not executable' % path)

    def test_disk_usage(self):
        self.assert_stdout('disk_usage.py')

    def test_free(self):
        self.assert_stdout('free.py')

    def test_meminfo(self):
        self.assert_stdout('meminfo.py')

    def test_procinfo(self):
        self.assert_stdout('procinfo.py', str(os.getpid()))

    @unittest.skipIf(CI_TESTING and not psutil.users(), "no users")
    def test_who(self):
        self.assert_stdout('who.py')

    def test_ps(self):
        self.assert_stdout('ps.py')

    def test_pstree(self):
        self.assert_stdout('pstree.py')

    def test_netstat(self):
        self.assert_stdout('netstat.py')

    def test_ifconfig(self):
        self.assert_stdout('ifconfig.py')

    @unittest.skipIf(not HAS_MEMORY_MAPS, "not supported")
    def test_pmap(self):
        self.assert_stdout('pmap.py', str(os.getpid()))

    def test_procsmem(self):
        if 'uss' not in psutil.Process().memory_full_info()._fields:
            raise self.skipTest("not supported")
        self.assert_stdout('procsmem.py')

    def test_killall(self):
        self.assert_syntax('killall.py')

    def test_nettop(self):
        self.assert_syntax('nettop.py')

    def test_top(self):
        self.assert_syntax('top.py')

    def test_iotop(self):
        self.assert_syntax('iotop.py')

    def test_pidof(self):
        output = self.assert_stdout('pidof.py', psutil.Process().name())
        self.assertIn(str(os.getpid()), output)

    @unittest.skipIf(not WINDOWS, "WINDOWS only")
    def test_winservices(self):
        self.assert_stdout('winservices.py')

    def test_cpu_distribution(self):
        self.assert_syntax('cpu_distribution.py')

    @unittest.skipIf(not HAS_SENSORS_TEMPERATURES, "not supported")
    def test_temperatures(self):
        if not psutil.sensors_temperatures():
            self.skipTest("no temperatures")
        self.assert_stdout('temperatures.py')

    @unittest.skipIf(not HAS_SENSORS_FANS, "not supported")
    def test_fans(self):
        if not psutil.sensors_fans():
            self.skipTest("no fans")
        self.assert_stdout('fans.py')

    @unittest.skipIf(not HAS_SENSORS_BATTERY, "not supported")
    @unittest.skipIf(not HAS_BATTERY, "no battery")
    def test_battery(self):
        self.assert_stdout('battery.py')

    @unittest.skipIf(not HAS_SENSORS_BATTERY, "not supported")
    @unittest.skipIf(not HAS_BATTERY, "no battery")
    def test_sensors(self):
        self.assert_stdout('sensors.py')


if __name__ == '__main__':
    from psutil.tests.runner import run_from_name
    run_from_name(__file__)

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