#!/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 psutil.Process class.""" import collections import errno import getpass import itertools import os import signal import socket import subprocess import sys import tempfile import textwrap import time import types import psutil from psutil import AIX from psutil import BSD from psutil import LINUX from psutil import MACOS from psutil import NETBSD from psutil import OPENBSD from psutil import OSX from psutil import POSIX from psutil import SUNOS from psutil import WINDOWS from psutil._common import open_text from psutil._compat import long from psutil._compat import PY3 from psutil.tests import APPVEYOR from psutil.tests import call_until from psutil.tests import copyload_shared_lib from psutil.tests import create_exe from psutil.tests import create_proc_children_pair from psutil.tests import create_zombie_proc from psutil.tests import enum from psutil.tests import get_test_subprocess from psutil.tests import HAS_CPU_AFFINITY from psutil.tests import HAS_ENVIRON from psutil.tests import HAS_IONICE from psutil.tests import HAS_MEMORY_MAPS from psutil.tests import HAS_PROC_CPU_NUM from psutil.tests import HAS_PROC_IO_COUNTERS from psutil.tests import HAS_RLIMIT from psutil.tests import HAS_THREADS from psutil.tests import mock from psutil.tests import PYPY from psutil.tests import PYTHON_EXE from psutil.tests import reap_children from psutil.tests import retry_on_failure from psutil.tests import safe_rmpath from psutil.tests import sh from psutil.tests import skip_on_access_denied from psutil.tests import skip_on_not_implemented from psutil.tests import TESTFILE_PREFIX from psutil.tests import TESTFN from psutil.tests import ThreadTask from psutil.tests import TRAVIS from psutil.tests import unittest from psutil.tests import wait_for_pid # =================================================================== # --- psutil.Process class tests # =================================================================== class TestProcess(unittest.TestCase): """Tests for psutil.Process class.""" def setUp(self): safe_rmpath(TESTFN) def tearDown(self): reap_children() def test_pid(self): p = psutil.Process() self.assertEqual(p.pid, os.getpid()) sproc = get_test_subprocess() self.assertEqual(psutil.Process(sproc.pid).pid, sproc.pid) with self.assertRaises(AttributeError): p.pid = 33 def test_kill(self): sproc = get_test_subprocess() test_pid = sproc.pid p = psutil.Process(test_pid) p.kill() sig = p.wait() self.assertFalse(psutil.pid_exists(test_pid)) if POSIX: self.assertEqual(sig, -signal.SIGKILL) def test_terminate(self): sproc = get_test_subprocess() test_pid = sproc.pid p = psutil.Process(test_pid) p.terminate() sig = p.wait() self.assertFalse(psutil.pid_exists(test_pid)) if POSIX: self.assertEqual(sig, -signal.SIGTERM) def test_send_signal(self): sig = signal.SIGKILL if POSIX else signal.SIGTERM sproc = get_test_subprocess() p = psutil.Process(sproc.pid) p.send_signal(sig) exit_sig = p.wait() self.assertFalse(psutil.pid_exists(p.pid)) if POSIX: self.assertEqual(exit_sig, -sig) # sproc = get_test_subprocess() p = psutil.Process(sproc.pid) p.send_signal(sig) with mock.patch('psutil.os.kill', side_effect=OSError(errno.ESRCH, "")): with self.assertRaises(psutil.NoSuchProcess): p.send_signal(sig) # sproc = get_test_subprocess() p = psutil.Process(sproc.pid) p.send_signal(sig) with mock.patch('psutil.os.kill', side_effect=OSError(errno.EPERM, "")): with self.assertRaises(psutil.AccessDenied): psutil.Process().send_signal(sig) # Sending a signal to process with PID 0 is not allowed as # it would affect every process in the process group of # the calling process (os.getpid()) instead of PID 0"). if 0 in psutil.pids(): p = psutil.Process(0) self.assertRaises(ValueError, p.send_signal, signal.SIGTERM) def test_wait(self): # check exit code signal sproc = get_test_subprocess() p = psutil.Process(sproc.pid) p.kill() code = p.wait() if POSIX: self.assertEqual(code, -signal.SIGKILL) else: self.assertEqual(code, signal.SIGTERM) self.assertFalse(p.is_running()) sproc = get_test_subprocess() p = psutil.Process(sproc.pid) p.terminate() code = p.wait() if POSIX: self.assertEqual(code, -signal.SIGTERM) else: self.assertEqual(code, signal.SIGTERM) self.assertFalse(p.is_running()) # check sys.exit() code code = "import time, sys; time.sleep(0.01); sys.exit(5);" sproc = get_test_subprocess([PYTHON_EXE, "-c", code]) p = psutil.Process(sproc.pid) self.assertEqual(p.wait(), 5) self.assertFalse(p.is_running()) # Test wait() issued twice. # It is not supposed to raise NSP when the process is gone. # On UNIX this should return None, on Windows it should keep # returning the exit code. sproc = get_test_subprocess([PYTHON_EXE, "-c", code]) p = psutil.Process(sproc.pid) self.assertEqual(p.wait(), 5) self.assertIn(p.wait(), (5, None)) # test timeout sproc = get_test_subprocess() p = psutil.Process(sproc.pid) p.name() self.assertRaises(psutil.TimeoutExpired, p.wait, 0.01) # timeout < 0 not allowed self.assertRaises(ValueError, p.wait, -1) def test_wait_non_children(self): # Test wait() against a process which is not our direct # child. p1, p2 = create_proc_children_pair() self.assertRaises(psutil.TimeoutExpired, p1.wait, 0.01) self.assertRaises(psutil.TimeoutExpired, p2.wait, 0.01) # We also terminate the direct child otherwise the # grandchild will hang until the parent is gone. p1.terminate() p2.terminate() ret1 = p1.wait() ret2 = p2.wait() if POSIX: self.assertEqual(ret1, -signal.SIGTERM) # For processes which are not our children we're supposed # to get None. self.assertEqual(ret2, None) else: self.assertEqual(ret1, signal.SIGTERM) self.assertEqual(ret1, signal.SIGTERM) def test_wait_timeout_0(self): sproc = get_test_subprocess() p = psutil.Process(sproc.pid) self.assertRaises(psutil.TimeoutExpired, p.wait, 0) p.kill() stop_at = time.time() + 2 while True: try: code = p.wait(0) except psutil.TimeoutExpired: if time.time() >= stop_at: raise else: break if POSIX: self.assertEqual(code, -signal.SIGKILL) else: self.assertEqual(code, signal.SIGTERM) self.assertFalse(p.is_running()) def test_cpu_percent(self): p = psutil.Process() p.cpu_percent(interval=0.001) p.cpu_percent(interval=0.001) for x in range(100): percent = p.cpu_percent(interval=None) self.assertIsInstance(percent, float) self.assertGreaterEqual(percent, 0.0) with self.assertRaises(ValueError): p.cpu_percent(interval=-1) def test_cpu_percent_numcpus_none(self): # See: https://github.com/giampaolo/psutil/issues/1087 with mock.patch('psutil.cpu_count', return_value=None) as m: psutil.Process().cpu_percent() assert m.called def test_cpu_times(self): times = psutil.Process().cpu_times() assert (times.user > 0.0) or (times.system > 0.0), times assert (times.children_user >= 0.0), times assert (times.children_system >= 0.0), times # make sure returned values can be pretty printed with strftime for name in times._fields: time.strftime("%H:%M:%S", time.localtime(getattr(times, name))) def test_cpu_times_2(self): user_time, kernel_time = psutil.Process().cpu_times()[:2] utime, ktime = os.times()[:2] # Use os.times()[:2] as base values to compare our results # using a tolerance of +/- 0.1 seconds. # It will fail if the difference between the values is > 0.1s. if (max([user_time, utime]) - min([user_time, utime])) > 0.1: self.fail("expected: %s, found: %s" % (utime, user_time)) if (max([kernel_time, ktime]) - min([kernel_time, ktime])) > 0.1: self.fail("expected: %s, found: %s" % (ktime, kernel_time)) @unittest.skipIf(not HAS_PROC_CPU_NUM, "not supported") def test_cpu_num(self): p = psutil.Process() num = p.cpu_num() self.assertGreaterEqual(num, 0) if psutil.cpu_count() == 1: self.assertEqual(num, 0) self.assertIn(p.cpu_num(), range(psutil.cpu_count())) def test_create_time(self): sproc = get_test_subprocess() now = time.time() p = psutil.Process(sproc.pid) create_time = p.create_time() # Use time.time() as base value to compare our result using a # tolerance of +/- 1 second. # It will fail if the difference between the values is > 2s. difference = abs(create_time - now) if difference > 2: self.fail("expected: %s, found: %s, difference: %s" % (now, create_time, difference)) # make sure returned value can be pretty printed with strftime time.strftime("%Y %m %d %H:%M:%S", time.localtime(p.create_time())) @unittest.skipIf(not POSIX, 'POSIX only') @unittest.skipIf(TRAVIS, 'not reliable on TRAVIS') def test_terminal(self): terminal = psutil.Process().terminal() if sys.stdin.isatty() or sys.stdout.isatty(): tty = os.path.realpath(sh('tty')) self.assertEqual(terminal, tty) else: self.assertIsNone(terminal) @unittest.skipIf(not HAS_PROC_IO_COUNTERS, 'not supported') @skip_on_not_implemented(only_if=LINUX) def test_io_counters(self): p = psutil.Process() # test reads io1 = p.io_counters() with open(PYTHON_EXE, 'rb') as f: f.read() io2 = p.io_counters() if not BSD and not AIX: self.assertGreater(io2.read_count, io1.read_count) self.assertEqual(io2.write_count, io1.write_count) if LINUX: self.assertGreater(io2.read_chars, io1.read_chars) self.assertEqual(io2.write_chars, io1.write_chars) else: self.assertGreaterEqual(io2.read_bytes, io1.read_bytes) self.assertGreaterEqual(io2.write_bytes, io1.write_bytes) # test writes io1 = p.io_counters() with tempfile.TemporaryFile(prefix=TESTFILE_PREFIX) as f: if PY3: f.write(bytes("x" * 1000000, 'ascii')) else: f.write("x" * 1000000) io2 = p.io_counters() self.assertGreaterEqual(io2.write_count, io1.write_count) self.assertGreaterEqual(io2.write_bytes, io1.write_bytes) self.assertGreaterEqual(io2.read_count, io1.read_count) self.assertGreaterEqual(io2.read_bytes, io1.read_bytes) if LINUX: self.assertGreater(io2.write_chars, io1.write_chars) self.assertGreaterEqual(io2.read_chars, io1.read_chars) # sanity check for i in range(len(io2)): if BSD and i >= 2: # On BSD read_bytes and write_bytes are always set to -1. continue self.assertGreaterEqual(io2[i], 0) self.assertGreaterEqual(io2[i], 0) @unittest.skipIf(not HAS_IONICE, "not supported") @unittest.skipIf(not LINUX, "linux only") def test_ionice_linux(self): p = psutil.Process() self.assertEqual(p.ionice()[0], psutil.IOPRIO_CLASS_NONE) self.assertEqual(psutil.IOPRIO_CLASS_NONE, 0) self.assertEqual(psutil.IOPRIO_CLASS_RT, 1) # high self.assertEqual(psutil.IOPRIO_CLASS_BE, 2) # normal self.assertEqual(psutil.IOPRIO_CLASS_IDLE, 3) # low try: # low p.ionice(psutil.IOPRIO_CLASS_IDLE) self.assertEqual(tuple(p.ionice()), (psutil.IOPRIO_CLASS_IDLE, 0)) with self.assertRaises(ValueError): # accepts no value p.ionice(psutil.IOPRIO_CLASS_IDLE, value=7) # normal p.ionice(psutil.IOPRIO_CLASS_BE) self.assertEqual(tuple(p.ionice()), (psutil.IOPRIO_CLASS_BE, 0)) p.ionice(psutil.IOPRIO_CLASS_BE, value=7) self.assertEqual(tuple(p.ionice()), (psutil.IOPRIO_CLASS_BE, 7)) with self.assertRaises(ValueError): p.ionice(psutil.IOPRIO_CLASS_BE, value=8) # high if os.getuid() == 0: # root p.ionice(psutil.IOPRIO_CLASS_RT) self.assertEqual(tuple(p.ionice()), (psutil.IOPRIO_CLASS_RT, 0)) p.ionice(psutil.IOPRIO_CLASS_RT, value=7) self.assertEqual(tuple(p.ionice()), (psutil.IOPRIO_CLASS_RT, 7)) with self.assertRaises(ValueError): p.ionice(psutil.IOPRIO_CLASS_IDLE, value=8) # errs self.assertRaisesRegex( ValueError, "ioclass accepts no value", p.ionice, psutil.IOPRIO_CLASS_NONE, 1) self.assertRaisesRegex( ValueError, "ioclass accepts no value", p.ionice, psutil.IOPRIO_CLASS_IDLE, 1) self.assertRaisesRegex( ValueError, "'ioclass' argument must be specified", p.ionice, value=1) finally: p.ionice(psutil.IOPRIO_CLASS_BE) @unittest.skipIf(not HAS_IONICE, "not supported") @unittest.skipIf(not WINDOWS, 'not supported on this win version') def test_ionice_win(self): p = psutil.Process() self.assertEqual(p.ionice(), psutil.IOPRIO_NORMAL) try: # base p.ionice(psutil.IOPRIO_VERYLOW) self.assertEqual(p.ionice(), psutil.IOPRIO_VERYLOW) p.ionice(psutil.IOPRIO_LOW) self.assertEqual(p.ionice(), psutil.IOPRIO_LOW) try: p.ionice(psutil.IOPRIO_HIGH) except psutil.AccessDenied: pass else: self.assertEqual(p.ionice(), psutil.IOPRIO_HIGH) # errs self.assertRaisesRegex( TypeError, "value argument not accepted on Windows", p.ionice, psutil.IOPRIO_NORMAL, value=1) self.assertRaisesRegex( ValueError, "is not a valid priority", p.ionice, psutil.IOPRIO_HIGH + 1) finally: p.ionice(psutil.IOPRIO_NORMAL) self.assertEqual(p.ionice(), psutil.IOPRIO_NORMAL) @unittest.skipIf(not HAS_RLIMIT, "not supported") def test_rlimit_get(self): import resource p = psutil.Process(os.getpid()) names = [x for x in dir(psutil) if x.startswith('RLIMIT')] assert names, names for name in names: value = getattr(psutil, name) self.assertGreaterEqual(value, 0) if name in dir(resource): self.assertEqual(value, getattr(resource, name)) # XXX - On PyPy RLIMIT_INFINITY returned by # resource.getrlimit() is reported as a very big long # number instead of -1. It looks like a bug with PyPy. if PYPY: continue self.assertEqual(p.rlimit(value), resource.getrlimit(value)) else: ret = p.rlimit(value) self.assertEqual(len(ret), 2) self.assertGreaterEqual(ret[0], -1) self.assertGreaterEqual(ret[1], -1) @unittest.skipIf(not HAS_RLIMIT, "not supported") def test_rlimit_set(self): sproc = get_test_subprocess() p = psutil.Process(sproc.pid) p.rlimit(psutil.RLIMIT_NOFILE, (5, 5)) self.assertEqual(p.rlimit(psutil.RLIMIT_NOFILE), (5, 5)) # If pid is 0 prlimit() applies to the calling process and # we don't want that. with self.assertRaises(ValueError): psutil._psplatform.Process(0).rlimit(0) with self.assertRaises(ValueError): p.rlimit(psutil.RLIMIT_NOFILE, (5, 5, 5)) @unittest.skipIf(not HAS_RLIMIT, "not supported") def test_rlimit(self): p = psutil.Process() soft, hard = p.rlimit(psutil.RLIMIT_FSIZE) try: p.rlimit(psutil.RLIMIT_FSIZE, (1024, hard)) with open(TESTFN, "wb") as f: f.write(b"X" * 1024) # write() or flush() doesn't always cause the exception # but close() will. with self.assertRaises(IOError) as exc: with open(TESTFN, "wb") as f: f.write(b"X" * 1025) self.assertEqual(exc.exception.errno if PY3 else exc.exception[0], errno.EFBIG) finally: p.rlimit(psutil.RLIMIT_FSIZE, (soft, hard)) self.assertEqual(p.rlimit(psutil.RLIMIT_FSIZE), (soft, hard)) @unittest.skipIf(not HAS_RLIMIT, "not supported") def test_rlimit_infinity(self): # First set a limit, then re-set it by specifying INFINITY # and assume we overridden the previous limit. p = psutil.Process() soft, hard = p.rlimit(psutil.RLIMIT_FSIZE) try: p.rlimit(psutil.RLIMIT_FSIZE, (1024, hard)) p.rlimit(psutil.RLIMIT_FSIZE, (psutil.RLIM_INFINITY, hard)) with open(TESTFN, "wb") as f: f.write(b"X" * 2048) finally: p.rlimit(psutil.RLIMIT_FSIZE, (soft, hard)) self.assertEqual(p.rlimit(psutil.RLIMIT_FSIZE), (soft, hard)) @unittest.skipIf(not HAS_RLIMIT, "not supported") def test_rlimit_infinity_value(self): # RLIMIT_FSIZE should be RLIM_INFINITY, which will be a really # big number on a platform with large file support. On these # platforms we need to test that the get/setrlimit functions # properly convert the number to a C long long and that the # conversion doesn't raise an error. p = psutil.Process() soft, hard = p.rlimit(psutil.RLIMIT_FSIZE) self.assertEqual(psutil.RLIM_INFINITY, hard) p.rlimit(psutil.RLIMIT_FSIZE, (soft, hard)) def test_num_threads(self): # on certain platforms such as Linux we might test for exact # thread number, since we always have with 1 thread per process, # but this does not apply across all platforms (MACOS, Windows) p = psutil.Process() if OPENBSD: try: step1 = p.num_threads() except psutil.AccessDenied: raise unittest.SkipTest("on OpenBSD this requires root access") else: step1 = p.num_threads() with ThreadTask(): step2 = p.num_threads() self.assertEqual(step2, step1 + 1) @unittest.skipIf(not WINDOWS, 'WINDOWS only') def test_num_handles(self): # a better test is done later into test/_windows.py p = psutil.Process() self.assertGreater(p.num_handles(), 0) @unittest.skipIf(not HAS_THREADS, 'not supported') def test_threads(self): p = psutil.Process() if OPENBSD: try: step1 = p.threads() except psutil.AccessDenied: raise unittest.SkipTest("on OpenBSD this requires root access") else: step1 = p.threads() with ThreadTask(): step2 = p.threads() self.assertEqual(len(step2), len(step1) + 1) athread = step2[0] # test named tuple self.assertEqual(athread.id, athread[0]) self.assertEqual(athread.user_time, athread[1]) self.assertEqual(athread.system_time, athread[2]) @retry_on_failure() @skip_on_access_denied(only_if=MACOS) @unittest.skipIf(not HAS_THREADS, 'not supported') def test_threads_2(self): sproc = get_test_subprocess() p = psutil.Process(sproc.pid) if OPENBSD: try: p.threads() except psutil.AccessDenied: raise unittest.SkipTest( "on OpenBSD this requires root access") self.assertAlmostEqual( p.cpu_times().user, sum([x.user_time for x in p.threads()]), delta=0.1) self.assertAlmostEqual( p.cpu_times().system, sum([x.system_time for x in p.threads()]), delta=0.1) def test_memory_info(self): p = psutil.Process() # step 1 - get a base value to compare our results rss1, vms1 = p.memory_info()[:2] percent1 = p.memory_percent() self.assertGreater(rss1, 0) self.assertGreater(vms1, 0) # step 2 - allocate some memory memarr = [None] * 1500000 rss2, vms2 = p.memory_info()[:2] percent2 = p.memory_percent() # step 3 - make sure that the memory usage bumped up self.assertGreater(rss2, rss1) self.assertGreaterEqual(vms2, vms1) # vms might be equal self.assertGreater(percent2, percent1) del memarr if WINDOWS: mem = p.memory_info() self.assertEqual(mem.rss, mem.wset) self.assertEqual(mem.vms, mem.pagefile) mem = p.memory_info() for name in mem._fields: self.assertGreaterEqual(getattr(mem, name), 0) def test_memory_full_info(self): total = psutil.virtual_memory().total mem = psutil.Process().memory_full_info() for name in mem._fields: value = getattr(mem, name) self.assertGreaterEqual(value, 0, msg=(name, value)) if name == 'vms' and OSX or LINUX: continue self.assertLessEqual(value, total, msg=(name, value, total)) if LINUX or WINDOWS or MACOS: self.assertGreaterEqual(mem.uss, 0) if LINUX: self.assertGreaterEqual(mem.pss, 0) self.assertGreaterEqual(mem.swap, 0) @unittest.skipIf(not HAS_MEMORY_MAPS, "not supported") def test_memory_maps(self): p = psutil.Process() maps = p.memory_maps() paths = [x for x in maps] self.assertEqual(len(paths), len(set(paths))) ext_maps = p.memory_maps(grouped=False) for nt in maps: if not nt.path.startswith('['): assert os.path.isabs(nt.path), nt.path if POSIX: try: assert os.path.exists(nt.path) or \ os.path.islink(nt.path), nt.path except AssertionError: if not LINUX: raise else: # https://github.com/giampaolo/psutil/issues/759 with open_text('/proc/self/smaps') as f: data = f.read() if "%s (deleted)" % nt.path not in data: raise else: # XXX - On Windows we have this strange behavior with # 64 bit dlls: they are visible via explorer but cannot # be accessed via os.stat() (wtf?). if '64' not in os.path.basename(nt.path): assert os.path.exists(nt.path), nt.path for nt in ext_maps: for fname in nt._fields: value = getattr(nt, fname) if fname == 'path': continue elif fname in ('addr', 'perms'): assert value, value else: self.assertIsInstance(value, (int, long)) assert value >= 0, value @unittest.skipIf(not HAS_MEMORY_MAPS, "not supported") def test_memory_maps_lists_lib(self): # Make sure a newly loaded shared lib is listed. with copyload_shared_lib() as path: def normpath(p): return os.path.realpath(os.path.normcase(p)) libpaths = [normpath(x.path) for x in psutil.Process().memory_maps()] self.assertIn(normpath(path), libpaths) def test_memory_percent(self): p = psutil.Process() p.memory_percent() self.assertRaises(ValueError, p.memory_percent, memtype="?!?") if LINUX or MACOS or WINDOWS: p.memory_percent(memtype='uss') def test_is_running(self): sproc = get_test_subprocess() p = psutil.Process(sproc.pid) assert p.is_running() assert p.is_running() p.kill() p.wait() assert not p.is_running() assert not p.is_running() def test_exe(self): sproc = get_test_subprocess() exe = psutil.Process(sproc.pid).exe() try: self.assertEqual(exe, PYTHON_EXE) except AssertionError: if WINDOWS and len(exe) == len(PYTHON_EXE): # on Windows we don't care about case sensitivity normcase = os.path.normcase self.assertEqual(normcase(exe), normcase(PYTHON_EXE)) else: # certain platforms such as BSD are more accurate returning: # "/usr/local/bin/python2.7" # ...instead of: # "/usr/local/bin/python" # We do not want to consider this difference in accuracy # an error. ver = "%s.%s" % (sys.version_info[0], sys.version_info[1]) try: self.assertEqual(exe.replace(ver, ''), PYTHON_EXE.replace(ver, '')) except AssertionError: # Tipically MACOS. Really not sure what to do here. pass out = sh([exe, "-c", "import os; print('hey')"]) self.assertEqual(out, 'hey') def test_cmdline(self): cmdline = [PYTHON_EXE, "-c", "import time; time.sleep(60)"] sproc = get_test_subprocess(cmdline) try: self.assertEqual(' '.join(psutil.Process(sproc.pid).cmdline()), ' '.join(cmdline)) except AssertionError: # XXX - most of the times the underlying sysctl() call on Net # and Open BSD returns a truncated string. # Also /proc/pid/cmdline behaves the same so it looks # like this is a kernel bug. # XXX - AIX truncates long arguments in /proc/pid/cmdline if NETBSD or OPENBSD or AIX: self.assertEqual( psutil.Process(sproc.pid).cmdline()[0], PYTHON_EXE) else: raise def test_name(self): sproc = get_test_subprocess(PYTHON_EXE) name = psutil.Process(sproc.pid).name().lower() pyexe = os.path.basename(os.path.realpath(sys.executable)).lower() assert pyexe.startswith(name), (pyexe, name) # XXX @unittest.skipIf(SUNOS, "broken on SUNOS") @unittest.skipIf(AIX, "broken on AIX") def test_prog_w_funky_name(self): # Test that name(), exe() and cmdline() correctly handle programs # with funky chars such as spaces and ")", see: # https://github.com/giampaolo/psutil/issues/628 def rm(): # Try to limit occasional failures on Appveyor: # https://ci.appveyor.com/project/giampaolo/psutil/build/1350/ # job/lbo3bkju55le850n try: safe_rmpath(funky_path) except OSError: pass funky_path = TESTFN + 'foo bar )' create_exe(funky_path) self.addCleanup(rm) cmdline = [funky_path, "-c", "import time; [time.sleep(0.01) for x in range(3000)];" "arg1", "arg2", "", "arg3", ""] sproc = get_test_subprocess(cmdline) p = psutil.Process(sproc.pid) # ...in order to try to prevent occasional failures on travis if TRAVIS: wait_for_pid(p.pid) self.assertEqual(p.cmdline(), cmdline) self.assertEqual(p.name(), os.path.basename(funky_path)) self.assertEqual(os.path.normcase(p.exe()), os.path.normcase(funky_path)) @unittest.skipIf(not POSIX, 'POSIX only') def test_uids(self): p = psutil.Process() real, effective, saved = p.uids() # os.getuid() refers to "real" uid self.assertEqual(real, os.getuid()) # os.geteuid() refers to "effective" uid self.assertEqual(effective, os.geteuid()) # No such thing as os.getsuid() ("saved" uid), but starting # from python 2.7 we have os.getresuid() which returns all # of them. if hasattr(os, "getresuid"): self.assertEqual(os.getresuid(), p.uids()) @unittest.skipIf(not POSIX, 'POSIX only') def test_gids(self): p = psutil.Process() real, effective, saved = p.gids() # os.getuid() refers to "real" uid self.assertEqual(real, os.getgid()) # os.geteuid() refers to "effective" uid self.assertEqual(effective, os.getegid()) # No such thing as os.getsgid() ("saved" gid), but starting # from python 2.7 we have os.getresgid() which returns all # of them. if hasattr(os, "getresuid"): self.assertEqual(os.getresgid(), p.gids()) def test_nice(self): p = psutil.Process() self.assertRaises(TypeError, p.nice, "str") if WINDOWS: try: init = p.nice() if sys.version_info > (3, 4): self.assertIsInstance(init, enum.IntEnum) else: self.assertIsInstance(init, int) self.assertEqual(init, psutil.NORMAL_PRIORITY_CLASS) p.nice(psutil.HIGH_PRIORITY_CLASS) self.assertEqual(p.nice(), psutil.HIGH_PRIORITY_CLASS) p.nice(psutil.NORMAL_PRIORITY_CLASS) self.assertEqual(p.nice(), psutil.NORMAL_PRIORITY_CLASS) finally: p.nice(psutil.NORMAL_PRIORITY_CLASS) else: first_nice = p.nice() try: if hasattr(os, "getpriority"): self.assertEqual( os.getpriority(os.PRIO_PROCESS, os.getpid()), p.nice()) p.nice(1) self.assertEqual(p.nice(), 1) if hasattr(os, "getpriority"): self.assertEqual( os.getpriority(os.PRIO_PROCESS, os.getpid()), p.nice()) # XXX - going back to previous nice value raises # AccessDenied on MACOS if not MACOS: p.nice(0) self.assertEqual(p.nice(), 0) except psutil.AccessDenied: pass finally: try: p.nice(first_nice) except psutil.AccessDenied: pass def test_status(self): p = psutil.Process() self.assertEqual(p.status(), psutil.STATUS_RUNNING) def test_username(self): sproc = get_test_subprocess() p = psutil.Process(sproc.pid) username = p.username() if WINDOWS: domain, username = username.split('\\') self.assertEqual(username, getpass.getuser()) if 'USERDOMAIN' in os.environ: self.assertEqual(domain, os.environ['USERDOMAIN']) else: self.assertEqual(username, getpass.getuser()) def test_cwd(self): sproc = get_test_subprocess() p = psutil.Process(sproc.pid) self.assertEqual(p.cwd(), os.getcwd()) def test_cwd_2(self): cmd = [PYTHON_EXE, "-c", "import os, time; os.chdir('..'); time.sleep(60)"] sproc = get_test_subprocess(cmd) p = psutil.Process(sproc.pid) call_until(p.cwd, "ret == os.path.dirname(os.getcwd())") @unittest.skipIf(not HAS_CPU_AFFINITY, 'not supported') def test_cpu_affinity(self): p = psutil.Process() initial = p.cpu_affinity() assert initial, initial self.addCleanup(p.cpu_affinity, initial) if hasattr(os, "sched_getaffinity"): self.assertEqual(initial, list(os.sched_getaffinity(p.pid))) self.assertEqual(len(initial), len(set(initial))) all_cpus = list(range(len(psutil.cpu_percent(percpu=True)))) # Work around travis failure: # https://travis-ci.org/giampaolo/psutil/builds/284173194 for n in all_cpus if not TRAVIS else initial: p.cpu_affinity([n]) self.assertEqual(p.cpu_affinity(), [n]) if hasattr(os, "sched_getaffinity"): self.assertEqual(p.cpu_affinity(), list(os.sched_getaffinity(p.pid))) # also test num_cpu() if hasattr(p, "num_cpu"): self.assertEqual(p.cpu_affinity()[0], p.num_cpu()) # [] is an alias for "all eligible CPUs"; on Linux this may # not be equal to all available CPUs, see: # https://github.com/giampaolo/psutil/issues/956 p.cpu_affinity([]) if LINUX: self.assertEqual(p.cpu_affinity(), p._proc._get_eligible_cpus()) else: self.assertEqual(p.cpu_affinity(), all_cpus) if hasattr(os, "sched_getaffinity"): self.assertEqual(p.cpu_affinity(), list(os.sched_getaffinity(p.pid))) # self.assertRaises(TypeError, p.cpu_affinity, 1) p.cpu_affinity(initial) # it should work with all iterables, not only lists if not TRAVIS: p.cpu_affinity(set(all_cpus)) p.cpu_affinity(tuple(all_cpus)) @unittest.skipIf(not HAS_CPU_AFFINITY, 'not supported') def test_cpu_affinity_errs(self): sproc = get_test_subprocess() p = psutil.Process(sproc.pid) invalid_cpu = [len(psutil.cpu_times(percpu=True)) + 10] self.assertRaises(ValueError, p.cpu_affinity, invalid_cpu) self.assertRaises(ValueError, p.cpu_affinity, range(10000, 11000)) self.assertRaises(TypeError, p.cpu_affinity, [0, "1"]) self.assertRaises(ValueError, p.cpu_affinity, [0, -1]) @unittest.skipIf(not HAS_CPU_AFFINITY, 'not supported') def test_cpu_affinity_all_combinations(self): p = psutil.Process() initial = p.cpu_affinity() assert initial, initial self.addCleanup(p.cpu_affinity, initial) # All possible CPU set combinations. combos = [] for l in range(0, len(initial) + 1): for subset in itertools.combinations(initial, l): if subset: combos.append(list(subset)) for combo in combos: p.cpu_affinity(combo) self.assertEqual(p.cpu_affinity(), combo) # TODO: #595 @unittest.skipIf(BSD, "broken on BSD") # can't find any process file on Appveyor @unittest.skipIf(APPVEYOR, "unreliable on APPVEYOR") def test_open_files(self): # current process p = psutil.Process() files = p.open_files() self.assertFalse(TESTFN in files) with open(TESTFN, 'wb') as f: f.write(b'x' * 1024) f.flush() # give the kernel some time to see the new file files = call_until(p.open_files, "len(ret) != %i" % len(files)) for file in files: if file.path == TESTFN: if LINUX: self.assertEqual(file.position, 1024) break else: self.fail("no file found; files=%s" % repr(files)) for file in files: assert os.path.isfile(file.path), file # another process cmdline = "import time; f = open(r'%s', 'r'); time.sleep(60);" % TESTFN sproc = get_test_subprocess([PYTHON_EXE, "-c", cmdline]) p = psutil.Process(sproc.pid) for x in range(100): filenames = [x.path for x in p.open_files()] if TESTFN in filenames: break time.sleep(.01) else: self.assertIn(TESTFN, filenames) for file in filenames: assert os.path.isfile(file), file # TODO: #595 @unittest.skipIf(BSD, "broken on BSD") # can't find any process file on Appveyor @unittest.skipIf(APPVEYOR, "unreliable on APPVEYOR") def test_open_files_2(self): # test fd and path fields with open(TESTFN, 'w') as fileobj: p = psutil.Process() for file in p.open_files(): if file.path == fileobj.name or file.fd == fileobj.fileno(): break else: self.fail("no file found; files=%s" % repr(p.open_files())) self.assertEqual(file.path, fileobj.name) if WINDOWS: self.assertEqual(file.fd, -1) else: self.assertEqual(file.fd, fileobj.fileno()) # test positions ntuple = p.open_files()[0] self.assertEqual(ntuple[0], ntuple.path) self.assertEqual(ntuple[1], ntuple.fd) # test file is gone self.assertNotIn(fileobj.name, p.open_files()) @unittest.skipIf(not POSIX, 'POSIX only') def test_num_fds(self): p = psutil.Process() start = p.num_fds() file = open(TESTFN, 'w') self.addCleanup(file.close) self.assertEqual(p.num_fds(), start + 1) sock = socket.socket() self.addCleanup(sock.close) self.assertEqual(p.num_fds(), start + 2) file.close() sock.close() self.assertEqual(p.num_fds(), start) @skip_on_not_implemented(only_if=LINUX) @unittest.skipIf(OPENBSD or NETBSD, "not reliable on OPENBSD & NETBSD") def test_num_ctx_switches(self): p = psutil.Process() before = sum(p.num_ctx_switches()) for x in range(500000): after = sum(p.num_ctx_switches()) if after > before: return self.fail("num ctx switches still the same after 50.000 iterations") def test_ppid(self): if hasattr(os, 'getppid'): self.assertEqual(psutil.Process().ppid(), os.getppid()) this_parent = os.getpid() sproc = get_test_subprocess() p = psutil.Process(sproc.pid) self.assertEqual(p.ppid(), this_parent) # no other process is supposed to have us as parent reap_children(recursive=True) if APPVEYOR: # Occasional failures, see: # https://ci.appveyor.com/project/giampaolo/psutil/build/ # job/0hs623nenj7w4m33 return for p in psutil.process_iter(): if p.pid == sproc.pid: continue # XXX: sometimes this fails on Windows; not sure why. self.assertNotEqual(p.ppid(), this_parent, msg=p) def test_parent(self): this_parent = os.getpid() sproc = get_test_subprocess() p = psutil.Process(sproc.pid) self.assertEqual(p.parent().pid, this_parent) lowest_pid = psutil.pids()[0] self.assertIsNone(psutil.Process(lowest_pid).parent()) def test_parent_multi(self): p1, p2 = create_proc_children_pair() self.assertEqual(p2.parent(), p1) self.assertEqual(p1.parent(), psutil.Process()) def test_parent_disappeared(self): # Emulate a case where the parent process disappeared. sproc = get_test_subprocess() p = psutil.Process(sproc.pid) with mock.patch("psutil.Process", side_effect=psutil.NoSuchProcess(0, 'foo')): self.assertIsNone(p.parent()) def test_parents(self): assert psutil.Process().parents() p1, p2 = create_proc_children_pair() self.assertEqual(p1.parents()[0], psutil.Process()) self.assertEqual(p2.parents()[0], p1) self.assertEqual(p2.parents()[1], psutil.Process()) if POSIX: lowest_pid = psutil.pids()[0] self.assertEqual(p1.parents()[-1].pid, lowest_pid) self.assertEqual(p2.parents()[-1].pid, lowest_pid) def test_children(self): reap_children(recursive=True) p = psutil.Process() self.assertEqual(p.children(), []) self.assertEqual(p.children(recursive=True), []) # On Windows we set the flag to 0 in order to cancel out the # CREATE_NO_WINDOW flag (enabled by default) which creates # an extra "conhost.exe" child. sproc = get_test_subprocess(creationflags=0) children1 = p.children() children2 = p.children(recursive=True) for children in (children1, children2): self.assertEqual(len(children), 1) self.assertEqual(children[0].pid, sproc.pid) self.assertEqual(children[0].ppid(), os.getpid()) def test_children_recursive(self): # Test children() against two sub processes, p1 and p2, where # p1 (our child) spawned p2 (our grandchild). p1, p2 = create_proc_children_pair() p = psutil.Process() self.assertEqual(p.children(), [p1]) self.assertEqual(p.children(recursive=True), [p1, p2]) # If the intermediate process is gone there's no way for # children() to recursively find it. p1.terminate() p1.wait() self.assertEqual(p.children(recursive=True), []) def test_children_duplicates(self): # find the process which has the highest number of children table = collections.defaultdict(int) for p in psutil.process_iter(): try: table[p.ppid()] += 1 except psutil.Error: pass # this is the one, now let's make sure there are no duplicates pid = sorted(table.items(), key=lambda x: x[1])[-1][0] p = psutil.Process(pid) try: c = p.children(recursive=True) except psutil.AccessDenied: # windows pass else: self.assertEqual(len(c), len(set(c))) def test_parents_and_children(self): p1, p2 = create_proc_children_pair() me = psutil.Process() # forward children = me.children(recursive=True) self.assertEqual(len(children), 2) self.assertEqual(children[0], p1) self.assertEqual(children[1], p2) # backward parents = p2.parents() self.assertEqual(parents[0], p1) self.assertEqual(parents[1], me) def test_suspend_resume(self): sproc = get_test_subprocess() p = psutil.Process(sproc.pid) p.suspend() for x in range(100): if p.status() == psutil.STATUS_STOPPED: break time.sleep(0.01) p.resume() self.assertNotEqual(p.status(), psutil.STATUS_STOPPED) def test_invalid_pid(self): self.assertRaises(TypeError, psutil.Process, "1") self.assertRaises(ValueError, psutil.Process, -1) def test_as_dict(self): p = psutil.Process() d = p.as_dict(attrs=['exe', 'name']) self.assertEqual(sorted(d.keys()), ['exe', 'name']) p = psutil.Process(min(psutil.pids())) d = p.as_dict(attrs=['connections'], ad_value='foo') if not isinstance(d['connections'], list): self.assertEqual(d['connections'], 'foo') # Test ad_value is set on AccessDenied. with mock.patch('psutil.Process.nice', create=True, side_effect=psutil.AccessDenied): self.assertEqual( p.as_dict(attrs=["nice"], ad_value=1), {"nice": 1}) # Test that NoSuchProcess bubbles up. with mock.patch('psutil.Process.nice', create=True, side_effect=psutil.NoSuchProcess(p.pid, "name")): self.assertRaises( psutil.NoSuchProcess, p.as_dict, attrs=["nice"]) # Test that ZombieProcess is swallowed. with mock.patch('psutil.Process.nice', create=True, side_effect=psutil.ZombieProcess(p.pid, "name")): self.assertEqual( p.as_dict(attrs=["nice"], ad_value="foo"), {"nice": "foo"}) # By default APIs raising NotImplementedError are # supposed to be skipped. with mock.patch('psutil.Process.nice', create=True, side_effect=NotImplementedError): d = p.as_dict() self.assertNotIn('nice', list(d.keys())) # ...unless the user explicitly asked for some attr. with self.assertRaises(NotImplementedError): p.as_dict(attrs=["nice"]) # errors with self.assertRaises(TypeError): p.as_dict('name') with self.assertRaises(ValueError): p.as_dict(['foo']) with self.assertRaises(ValueError): p.as_dict(['foo', 'bar']) def test_oneshot(self): with mock.patch("psutil._psplatform.Process.cpu_times") as m: p = psutil.Process() with p.oneshot(): p.cpu_times() p.cpu_times() self.assertEqual(m.call_count, 1) with mock.patch("psutil._psplatform.Process.cpu_times") as m: p.cpu_times() p.cpu_times() self.assertEqual(m.call_count, 2) def test_oneshot_twice(self): # Test the case where the ctx manager is __enter__ed twice. # The second __enter__ is supposed to resut in a NOOP. with mock.patch("psutil._psplatform.Process.cpu_times") as m1: with mock.patch("psutil._psplatform.Process.oneshot_enter") as m2: p = psutil.Process() with p.oneshot(): p.cpu_times() p.cpu_times() with p.oneshot(): p.cpu_times() p.cpu_times() self.assertEqual(m1.call_count, 1) self.assertEqual(m2.call_count, 1) with mock.patch("psutil._psplatform.Process.cpu_times") as m: p.cpu_times() p.cpu_times() self.assertEqual(m.call_count, 2) def test_oneshot_cache(self): # Make sure oneshot() cache is nonglobal. Instead it's # supposed to be bound to the Process instance, see: # https://github.com/giampaolo/psutil/issues/1373 p1, p2 = create_proc_children_pair() p1_ppid = p1.ppid() p2_ppid = p2.ppid() self.assertNotEqual(p1_ppid, p2_ppid) with p1.oneshot(): self.assertEqual(p1.ppid(), p1_ppid) self.assertEqual(p2.ppid(), p2_ppid) with p2.oneshot(): self.assertEqual(p1.ppid(), p1_ppid) self.assertEqual(p2.ppid(), p2_ppid) def test_halfway_terminated_process(self): # Test that NoSuchProcess exception gets raised in case the # process dies after we create the Process object. # Example: # >>> proc = Process(1234) # >>> time.sleep(2) # time-consuming task, process dies in meantime # >>> proc.name() # Refers to Issue #15 sproc = get_test_subprocess() p = psutil.Process(sproc.pid) p.terminate() p.wait() if WINDOWS: call_until(psutil.pids, "%s not in ret" % p.pid) assert not p.is_running() if WINDOWS: with self.assertRaises(psutil.NoSuchProcess): p.send_signal(signal.CTRL_C_EVENT) with self.assertRaises(psutil.NoSuchProcess): p.send_signal(signal.CTRL_BREAK_EVENT) excluded_names = ['pid', 'is_running', 'wait', 'create_time', 'oneshot', 'memory_info_ex'] if LINUX and not HAS_RLIMIT: excluded_names.append('rlimit') for name in dir(p): if (name.startswith('_') or name in excluded_names): continue try: meth = getattr(p, name) # get/set methods if name == 'nice': if POSIX: ret = meth(1) else: ret = meth(psutil.NORMAL_PRIORITY_CLASS) elif name == 'ionice': ret = meth() ret = meth(2) elif name == 'rlimit': ret = meth(psutil.RLIMIT_NOFILE) ret = meth(psutil.RLIMIT_NOFILE, (5, 5)) elif name == 'cpu_affinity': ret = meth() ret = meth([0]) elif name == 'send_signal': ret = meth(signal.SIGTERM) else: ret = meth() except psutil.ZombieProcess: self.fail("ZombieProcess for %r was not supposed to happen" % name) except psutil.NoSuchProcess: pass except psutil.AccessDenied: if OPENBSD and name in ('threads', 'num_threads'): pass else: raise except NotImplementedError: pass else: self.fail( "NoSuchProcess exception not raised for %r, retval=%s" % ( name, ret)) @unittest.skipIf(not POSIX, 'POSIX only') def test_zombie_process(self): def succeed_or_zombie_p_exc(fun, *args, **kwargs): try: return fun(*args, **kwargs) except (psutil.ZombieProcess, psutil.AccessDenied): pass zpid = create_zombie_proc() self.addCleanup(reap_children, recursive=True) # A zombie process should always be instantiable zproc = psutil.Process(zpid) # ...and at least its status always be querable self.assertEqual(zproc.status(), psutil.STATUS_ZOMBIE) # ...and it should be considered 'running' self.assertTrue(zproc.is_running()) # ...and as_dict() shouldn't crash zproc.as_dict() # if cmdline succeeds it should be an empty list ret = succeed_or_zombie_p_exc(zproc.suspend) if ret is not None: self.assertEqual(ret, []) if hasattr(zproc, "rlimit"): succeed_or_zombie_p_exc(zproc.rlimit, psutil.RLIMIT_NOFILE) succeed_or_zombie_p_exc(zproc.rlimit, psutil.RLIMIT_NOFILE, (5, 5)) # set methods succeed_or_zombie_p_exc(zproc.parent) if hasattr(zproc, 'cpu_affinity'): try: succeed_or_zombie_p_exc(zproc.cpu_affinity, [0]) except ValueError as err: if TRAVIS and LINUX and "not eligible" in str(err): # https://travis-ci.org/giampaolo/psutil/jobs/279890461 pass else: raise succeed_or_zombie_p_exc(zproc.nice, 0) if hasattr(zproc, 'ionice'): if LINUX: succeed_or_zombie_p_exc(zproc.ionice, 2, 0) else: succeed_or_zombie_p_exc(zproc.ionice, 0) # Windows if hasattr(zproc, 'rlimit'): succeed_or_zombie_p_exc(zproc.rlimit, psutil.RLIMIT_NOFILE, (5, 5)) succeed_or_zombie_p_exc(zproc.suspend) succeed_or_zombie_p_exc(zproc.resume) succeed_or_zombie_p_exc(zproc.terminate) succeed_or_zombie_p_exc(zproc.kill) # ...its parent should 'see' it # edit: not true on BSD and MACOS # descendants = [x.pid for x in psutil.Process().children( # recursive=True)] # self.assertIn(zpid, descendants) # XXX should we also assume ppid be usable? Note: this # would be an important use case as the only way to get # rid of a zombie is to kill its parent. # self.assertEqual(zpid.ppid(), os.getpid()) # ...and all other APIs should be able to deal with it self.assertTrue(psutil.pid_exists(zpid)) if not TRAVIS and MACOS: # For some reason this started failing all of the sudden. # Maybe they upgraded MACOS version? # https://travis-ci.org/giampaolo/psutil/jobs/310896404 self.assertIn(zpid, psutil.pids()) self.assertIn(zpid, [x.pid for x in psutil.process_iter()]) psutil._pmap = {} self.assertIn(zpid, [x.pid for x in psutil.process_iter()]) @unittest.skipIf(not POSIX, 'POSIX only') def test_zombie_process_is_running_w_exc(self): # Emulate a case where internally is_running() raises # ZombieProcess. p = psutil.Process() with mock.patch("psutil.Process", side_effect=psutil.ZombieProcess(0)) as m: assert p.is_running() assert m.called @unittest.skipIf(not POSIX, 'POSIX only') def test_zombie_process_status_w_exc(self): # Emulate a case where internally status() raises # ZombieProcess. p = psutil.Process() with mock.patch("psutil._psplatform.Process.status", side_effect=psutil.ZombieProcess(0)) as m: self.assertEqual(p.status(), psutil.STATUS_ZOMBIE) assert m.called def test_pid_0(self): # Process(0) is supposed to work on all platforms except Linux if 0 not in psutil.pids(): self.assertRaises(psutil.NoSuchProcess, psutil.Process, 0) return # test all methods p = psutil.Process(0) for name in psutil._as_dict_attrnames: if name == 'pid': continue meth = getattr(p, name) try: ret = meth() except psutil.AccessDenied: pass else: if name in ("uids", "gids"): self.assertEqual(ret.real, 0) elif name == "username": if POSIX: self.assertEqual(p.username(), 'root') elif WINDOWS: self.assertEqual(p.username(), 'NT AUTHORITY\\SYSTEM') elif name == "name": assert name, name if hasattr(p, 'rlimit'): try: p.rlimit(psutil.RLIMIT_FSIZE) except psutil.AccessDenied: pass p.as_dict() if not OPENBSD: self.assertIn(0, psutil.pids()) self.assertTrue(psutil.pid_exists(0)) @unittest.skipIf(not HAS_ENVIRON, "not supported") def test_environ(self): def clean_dict(d): # Most of these are problematic on Travis. d.pop("PSUTIL_TESTING", None) d.pop("PLAT", None) d.pop("HOME", None) if MACOS: d.pop("__CF_USER_TEXT_ENCODING", None) d.pop("VERSIONER_PYTHON_PREFER_32_BIT", None) d.pop("VERSIONER_PYTHON_VERSION", None) return dict( [(k.replace("\r", "").replace("\n", ""), v.replace("\r", "").replace("\n", "")) for k, v in d.items()]) self.maxDiff = None p = psutil.Process() d1 = clean_dict(p.environ()) d2 = clean_dict(os.environ.copy()) self.assertEqual(d1, d2) @unittest.skipIf(not HAS_ENVIRON, "not supported") @unittest.skipIf(not POSIX, "POSIX only") def test_weird_environ(self): # environment variables can contain values without an equals sign code = textwrap.dedent(""" #include #include char * const argv[] = {"cat", 0}; char * const envp[] = {"A=1", "X", "C=3", 0}; int main(void) { /* Close stderr on exec so parent can wait for the execve to * finish. */ if (fcntl(2, F_SETFD, FD_CLOEXEC) != 0) return 0; return execve("/bin/cat", argv, envp); } """) path = TESTFN create_exe(path, c_code=code) self.addCleanup(safe_rmpath, path) sproc = get_test_subprocess([path], stdin=subprocess.PIPE, stderr=subprocess.PIPE) p = psutil.Process(sproc.pid) wait_for_pid(p.pid) self.assertTrue(p.is_running()) # Wait for process to exec or exit. self.assertEqual(sproc.stderr.read(), b"") self.assertEqual(p.environ(), {"A": "1", "C": "3"}) sproc.communicate() self.assertEqual(sproc.returncode, 0) # =================================================================== # --- Limited user tests # =================================================================== if POSIX and os.getuid() == 0: class LimitedUserTestCase(TestProcess): """Repeat the previous tests by using a limited user. Executed only on UNIX and only if the user who run the test script is root. """ # the uid/gid the test suite runs under if hasattr(os, 'getuid'): PROCESS_UID = os.getuid() PROCESS_GID = os.getgid() def __init__(self, *args, **kwargs): TestProcess.__init__(self, *args, **kwargs) # re-define all existent test methods in order to # ignore AccessDenied exceptions for attr in [x for x in dir(self) if x.startswith('test')]: meth = getattr(self, attr) def test_(self): try: meth() except psutil.AccessDenied: pass setattr(self, attr, types.MethodType(test_, self)) def setUp(self): safe_rmpath(TESTFN) TestProcess.setUp(self) os.setegid(1000) os.seteuid(1000) def tearDown(self): os.setegid(self.PROCESS_UID) os.seteuid(self.PROCESS_GID) TestProcess.tearDown(self) def test_nice(self): try: psutil.Process().nice(-1) except psutil.AccessDenied: pass else: self.fail("exception not raised") def test_zombie_process(self): # causes problems if test test suite is run as root pass # =================================================================== # --- psutil.Popen tests # =================================================================== class TestPopen(unittest.TestCase): """Tests for psutil.Popen class.""" def tearDown(self): reap_children() def test_misc(self): # XXX this test causes a ResourceWarning on Python 3 because # psutil.__subproc instance doesn't get propertly freed. # Not sure what to do though. cmd = [PYTHON_EXE, "-c", "import time; time.sleep(60);"] with psutil.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE) as proc: proc.name() proc.cpu_times() proc.stdin self.assertTrue(dir(proc)) self.assertRaises(AttributeError, getattr, proc, 'foo') proc.terminate() def test_ctx_manager(self): with psutil.Popen([PYTHON_EXE, "-V"], stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE) as proc: proc.communicate() assert proc.stdout.closed assert proc.stderr.closed assert proc.stdin.closed self.assertEqual(proc.returncode, 0) def test_kill_terminate(self): # subprocess.Popen()'s terminate(), kill() and send_signal() do # not raise exception after the process is gone. psutil.Popen # diverges from that. cmd = [PYTHON_EXE, "-c", "import time; time.sleep(60);"] with psutil.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE) as proc: proc.terminate() proc.wait() self.assertRaises(psutil.NoSuchProcess, proc.terminate) self.assertRaises(psutil.NoSuchProcess, proc.kill) self.assertRaises(psutil.NoSuchProcess, proc.send_signal, signal.SIGTERM) if WINDOWS and sys.version_info >= (2, 7): self.assertRaises(psutil.NoSuchProcess, proc.send_signal, signal.CTRL_C_EVENT) self.assertRaises(psutil.NoSuchProcess, proc.send_signal, signal.CTRL_BREAK_EVENT) if __name__ == '__main__': from psutil.tests.runner import run run(__file__)