Edit File: test_contracts.py
#!/usr/bin/env python3 # 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. """Contracts tests. These tests mainly check API sanity in terms of returned types and APIs availability. Some of these are duplicates of tests test_system.py and test_process.py """ import errno import multiprocessing import os import signal import stat import sys import time import traceback from psutil import AIX from psutil import BSD from psutil import FREEBSD from psutil import LINUX from psutil import MACOS from psutil import NETBSD from psutil import OPENBSD from psutil import OSX from psutil import POSIX from psutil import SUNOS from psutil import WINDOWS from psutil._compat import FileNotFoundError from psutil._compat import long from psutil._compat import range from psutil.tests import APPVEYOR from psutil.tests import check_connection_ntuple from psutil.tests import CI_TESTING from psutil.tests import create_sockets from psutil.tests import enum from psutil.tests import GITHUB_ACTIONS from psutil.tests import HAS_CPU_FREQ from psutil.tests import HAS_NET_IO_COUNTERS from psutil.tests import HAS_SENSORS_FANS from psutil.tests import HAS_SENSORS_TEMPERATURES from psutil.tests import is_namedtuple from psutil.tests import kernel_version from psutil.tests import process_namespace from psutil.tests import PsutilTestCase from psutil.tests import PYPY from psutil.tests import serialrun from psutil.tests import SKIP_SYSCONS from psutil.tests import unittest from psutil.tests import VALID_PROC_STATUSES import psutil # =================================================================== # --- APIs availability # =================================================================== # Make sure code reflects what doc promises in terms of APIs # availability. class TestAvailConstantsAPIs(PsutilTestCase): def test_PROCFS_PATH(self): self.assertEqual(hasattr(psutil, "PROCFS_PATH"), LINUX or SUNOS or AIX) def test_win_priority(self): ae = self.assertEqual ae(hasattr(psutil, "ABOVE_NORMAL_PRIORITY_CLASS"), WINDOWS) ae(hasattr(psutil, "BELOW_NORMAL_PRIORITY_CLASS"), WINDOWS) ae(hasattr(psutil, "HIGH_PRIORITY_CLASS"), WINDOWS) ae(hasattr(psutil, "IDLE_PRIORITY_CLASS"), WINDOWS) ae(hasattr(psutil, "NORMAL_PRIORITY_CLASS"), WINDOWS) ae(hasattr(psutil, "REALTIME_PRIORITY_CLASS"), WINDOWS) def test_linux_ioprio_linux(self): ae = self.assertEqual ae(hasattr(psutil, "IOPRIO_CLASS_NONE"), LINUX) ae(hasattr(psutil, "IOPRIO_CLASS_RT"), LINUX) ae(hasattr(psutil, "IOPRIO_CLASS_BE"), LINUX) ae(hasattr(psutil, "IOPRIO_CLASS_IDLE"), LINUX) def test_linux_ioprio_windows(self): ae = self.assertEqual ae(hasattr(psutil, "IOPRIO_HIGH"), WINDOWS) ae(hasattr(psutil, "IOPRIO_NORMAL"), WINDOWS) ae(hasattr(psutil, "IOPRIO_LOW"), WINDOWS) ae(hasattr(psutil, "IOPRIO_VERYLOW"), WINDOWS) @unittest.skipIf(GITHUB_ACTIONS and LINUX, "unsupported on GITHUB_ACTIONS + LINUX") def test_rlimit(self): ae = self.assertEqual ae(hasattr(psutil, "RLIM_INFINITY"), LINUX or FREEBSD) ae(hasattr(psutil, "RLIMIT_AS"), LINUX or FREEBSD) ae(hasattr(psutil, "RLIMIT_CORE"), LINUX or FREEBSD) ae(hasattr(psutil, "RLIMIT_CPU"), LINUX or FREEBSD) ae(hasattr(psutil, "RLIMIT_DATA"), LINUX or FREEBSD) ae(hasattr(psutil, "RLIMIT_FSIZE"), LINUX or FREEBSD) ae(hasattr(psutil, "RLIMIT_MEMLOCK"), LINUX or FREEBSD) ae(hasattr(psutil, "RLIMIT_NOFILE"), LINUX or FREEBSD) ae(hasattr(psutil, "RLIMIT_NPROC"), LINUX or FREEBSD) ae(hasattr(psutil, "RLIMIT_RSS"), LINUX or FREEBSD) ae(hasattr(psutil, "RLIMIT_STACK"), LINUX or FREEBSD) ae(hasattr(psutil, "RLIMIT_LOCKS"), LINUX) if POSIX: if kernel_version() >= (2, 6, 8): ae(hasattr(psutil, "RLIMIT_MSGQUEUE"), LINUX) if kernel_version() >= (2, 6, 12): ae(hasattr(psutil, "RLIMIT_NICE"), LINUX) if kernel_version() >= (2, 6, 12): ae(hasattr(psutil, "RLIMIT_RTPRIO"), LINUX) if kernel_version() >= (2, 6, 25): ae(hasattr(psutil, "RLIMIT_RTTIME"), LINUX) if kernel_version() >= (2, 6, 8): ae(hasattr(psutil, "RLIMIT_SIGPENDING"), LINUX) ae(hasattr(psutil, "RLIMIT_SWAP"), FREEBSD) ae(hasattr(psutil, "RLIMIT_SBSIZE"), FREEBSD) ae(hasattr(psutil, "RLIMIT_NPTS"), FREEBSD) class TestAvailSystemAPIs(PsutilTestCase): def test_win_service_iter(self): self.assertEqual(hasattr(psutil, "win_service_iter"), WINDOWS) def test_win_service_get(self): self.assertEqual(hasattr(psutil, "win_service_get"), WINDOWS) def test_cpu_freq(self): self.assertEqual(hasattr(psutil, "cpu_freq"), LINUX or MACOS or WINDOWS or FREEBSD) def test_sensors_temperatures(self): self.assertEqual( hasattr(psutil, "sensors_temperatures"), LINUX or FREEBSD) def test_sensors_fans(self): self.assertEqual(hasattr(psutil, "sensors_fans"), LINUX) def test_battery(self): self.assertEqual(hasattr(psutil, "sensors_battery"), LINUX or WINDOWS or FREEBSD or MACOS) class TestAvailProcessAPIs(PsutilTestCase): def test_environ(self): self.assertEqual(hasattr(psutil.Process, "environ"), LINUX or MACOS or WINDOWS or AIX or SUNOS or FREEBSD or OPENBSD or NETBSD) def test_uids(self): self.assertEqual(hasattr(psutil.Process, "uids"), POSIX) def test_gids(self): self.assertEqual(hasattr(psutil.Process, "uids"), POSIX) def test_terminal(self): self.assertEqual(hasattr(psutil.Process, "terminal"), POSIX) def test_ionice(self): self.assertEqual(hasattr(psutil.Process, "ionice"), LINUX or WINDOWS) @unittest.skipIf(GITHUB_ACTIONS and LINUX, "unsupported on GITHUB_ACTIONS + LINUX") def test_rlimit(self): self.assertEqual(hasattr(psutil.Process, "rlimit"), LINUX or FREEBSD) def test_io_counters(self): hasit = hasattr(psutil.Process, "io_counters") self.assertEqual(hasit, False if MACOS or SUNOS else True) def test_num_fds(self): self.assertEqual(hasattr(psutil.Process, "num_fds"), POSIX) def test_num_handles(self): self.assertEqual(hasattr(psutil.Process, "num_handles"), WINDOWS) def test_cpu_affinity(self): self.assertEqual(hasattr(psutil.Process, "cpu_affinity"), LINUX or WINDOWS or FREEBSD) def test_cpu_num(self): self.assertEqual(hasattr(psutil.Process, "cpu_num"), LINUX or FREEBSD or SUNOS) def test_memory_maps(self): hasit = hasattr(psutil.Process, "memory_maps") self.assertEqual( hasit, False if OPENBSD or NETBSD or AIX or MACOS else True) # =================================================================== # --- API types # =================================================================== class TestSystemAPITypes(PsutilTestCase): """Check the return types of system related APIs. Mainly we want to test we never return unicode on Python 2, see: https://github.com/giampaolo/psutil/issues/1039 """ @classmethod def setUpClass(cls): cls.proc = psutil.Process() def assert_ntuple_of_nums(self, nt, type_=float, gezero=True): assert is_namedtuple(nt) for n in nt: self.assertIsInstance(n, type_) if gezero: self.assertGreaterEqual(n, 0) def test_cpu_times(self): self.assert_ntuple_of_nums(psutil.cpu_times()) for nt in psutil.cpu_times(percpu=True): self.assert_ntuple_of_nums(nt) def test_cpu_percent(self): self.assertIsInstance(psutil.cpu_percent(interval=None), float) self.assertIsInstance(psutil.cpu_percent(interval=0.00001), float) def test_cpu_times_percent(self): self.assert_ntuple_of_nums(psutil.cpu_times_percent(interval=None)) self.assert_ntuple_of_nums(psutil.cpu_times_percent(interval=0.0001)) def test_cpu_count(self): self.assertIsInstance(psutil.cpu_count(), int) @unittest.skipIf(not HAS_CPU_FREQ, "not supported") def test_cpu_freq(self): if psutil.cpu_freq() is None: raise self.skipTest("cpu_freq() returns None") self.assert_ntuple_of_nums(psutil.cpu_freq(), type_=(float, int, long)) def test_disk_io_counters(self): # Duplicate of test_system.py. Keep it anyway. for k, v in psutil.disk_io_counters(perdisk=True).items(): self.assertIsInstance(k, str) self.assert_ntuple_of_nums(v, type_=(int, long)) def test_disk_partitions(self): # Duplicate of test_system.py. Keep it anyway. for disk in psutil.disk_partitions(): self.assertIsInstance(disk.device, str) self.assertIsInstance(disk.mountpoint, str) self.assertIsInstance(disk.fstype, str) self.assertIsInstance(disk.opts, str) self.assertIsInstance(disk.maxfile, int) self.assertIsInstance(disk.maxpath, int) @unittest.skipIf(SKIP_SYSCONS, "requires root") def test_net_connections(self): with create_sockets(): ret = psutil.net_connections('all') self.assertEqual(len(ret), len(set(ret))) for conn in ret: assert is_namedtuple(conn) def test_net_if_addrs(self): # Duplicate of test_system.py. Keep it anyway. for ifname, addrs in psutil.net_if_addrs().items(): self.assertIsInstance(ifname, str) for addr in addrs: if enum is not None and not PYPY: self.assertIsInstance(addr.family, enum.IntEnum) else: self.assertIsInstance(addr.family, int) self.assertIsInstance(addr.address, str) self.assertIsInstance(addr.netmask, (str, type(None))) self.assertIsInstance(addr.broadcast, (str, type(None))) def test_net_if_stats(self): # Duplicate of test_system.py. Keep it anyway. for ifname, info in psutil.net_if_stats().items(): self.assertIsInstance(ifname, str) self.assertIsInstance(info.isup, bool) if enum is not None: self.assertIsInstance(info.duplex, enum.IntEnum) else: self.assertIsInstance(info.duplex, int) self.assertIsInstance(info.speed, int) self.assertIsInstance(info.mtu, int) @unittest.skipIf(not HAS_NET_IO_COUNTERS, 'not supported') def test_net_io_counters(self): # Duplicate of test_system.py. Keep it anyway. for ifname, _ in psutil.net_io_counters(pernic=True).items(): self.assertIsInstance(ifname, str) @unittest.skipIf(not HAS_SENSORS_FANS, "not supported") def test_sensors_fans(self): # Duplicate of test_system.py. Keep it anyway. for name, units in psutil.sensors_fans().items(): self.assertIsInstance(name, str) for unit in units: self.assertIsInstance(unit.label, str) self.assertIsInstance(unit.current, (float, int, type(None))) @unittest.skipIf(not HAS_SENSORS_TEMPERATURES, "not supported") def test_sensors_temperatures(self): # Duplicate of test_system.py. Keep it anyway. for name, units in psutil.sensors_temperatures().items(): self.assertIsInstance(name, str) for unit in units: self.assertIsInstance(unit.label, str) self.assertIsInstance(unit.current, (float, int, type(None))) self.assertIsInstance(unit.high, (float, int, type(None))) self.assertIsInstance(unit.critical, (float, int, type(None))) def test_boot_time(self): # Duplicate of test_system.py. Keep it anyway. self.assertIsInstance(psutil.boot_time(), float) def test_users(self): # Duplicate of test_system.py. Keep it anyway. for user in psutil.users(): self.assertIsInstance(user.name, str) self.assertIsInstance(user.terminal, (str, type(None))) self.assertIsInstance(user.host, (str, type(None))) self.assertIsInstance(user.pid, (int, type(None))) class TestProcessWaitType(PsutilTestCase): @unittest.skipIf(not POSIX, "not POSIX") def test_negative_signal(self): p = psutil.Process(self.spawn_testproc().pid) p.terminate() code = p.wait() self.assertEqual(code, -signal.SIGTERM) if enum is not None: self.assertIsInstance(code, enum.IntEnum) else: self.assertIsInstance(code, int) # =================================================================== # --- Featch all processes test # =================================================================== def proc_info(pid): tcase = PsutilTestCase() def check_exception(exc, proc, name, ppid): tcase.assertEqual(exc.pid, pid) tcase.assertEqual(exc.name, name) if isinstance(exc, psutil.ZombieProcess): if exc.ppid is not None: tcase.assertGreaterEqual(exc.ppid, 0) tcase.assertEqual(exc.ppid, ppid) elif isinstance(exc, psutil.NoSuchProcess): tcase.assertProcessGone(proc) str(exc) assert exc.msg def do_wait(): if pid != 0: try: proc.wait(0) except psutil.Error as exc: check_exception(exc, proc, name, ppid) try: proc = psutil.Process(pid) d = proc.as_dict(['ppid', 'name']) except psutil.NoSuchProcess: return {} name, ppid = d['name'], d['ppid'] info = {'pid': proc.pid} ns = process_namespace(proc) # We don't use oneshot() because in order not to fool # check_exception() in case of NSP. for fun, fun_name in ns.iter(ns.getters, clear_cache=False): try: info[fun_name] = fun() except psutil.Error as exc: check_exception(exc, proc, name, ppid) continue do_wait() return info @serialrun class TestFetchAllProcesses(PsutilTestCase): """Test which iterates over all running processes and performs some sanity checks against Process API's returned values. Uses a process pool to get info about all processes. """ def setUp(self): self.pool = multiprocessing.Pool() def tearDown(self): self.pool.terminate() self.pool.join() def iter_proc_info(self): # Fixes "can't pickle <function proc_info>: it's not the # same object as test_contracts.proc_info". from psutil.tests.test_contracts import proc_info return self.pool.imap_unordered(proc_info, psutil.pids()) def test_all(self): failures = [] for info in self.iter_proc_info(): for name, value in info.items(): meth = getattr(self, name) try: meth(value, info) except AssertionError: s = '\n' + '=' * 70 + '\n' s += "FAIL: test_%s pid=%s, ret=%s\n" % ( name, info['pid'], repr(value)) s += '-' * 70 s += "\n%s" % traceback.format_exc() s = "\n".join((" " * 4) + i for i in s.splitlines()) s += '\n' failures.append(s) else: if value not in (0, 0.0, [], None, '', {}): assert value, value if failures: raise self.fail(''.join(failures)) def cmdline(self, ret, info): self.assertIsInstance(ret, list) for part in ret: self.assertIsInstance(part, str) def exe(self, ret, info): self.assertIsInstance(ret, (str, type(None))) if not ret: self.assertEqual(ret, '') else: if WINDOWS and not ret.endswith('.exe'): return # May be "Registry", "MemCompression", ... assert os.path.isabs(ret), ret # Note: os.stat() may return False even if the file is there # hence we skip the test, see: # http://stackoverflow.com/questions/3112546/os-path-exists-lies if POSIX and os.path.isfile(ret): if hasattr(os, 'access') and hasattr(os, "X_OK"): # XXX: may fail on MACOS try: assert os.access(ret, os.X_OK) except AssertionError: if os.path.exists(ret) and not CI_TESTING: raise def pid(self, ret, info): self.assertIsInstance(ret, int) self.assertGreaterEqual(ret, 0) def ppid(self, ret, info): self.assertIsInstance(ret, (int, long)) self.assertGreaterEqual(ret, 0) def name(self, ret, info): self.assertIsInstance(ret, str) if APPVEYOR and not ret and info['status'] == 'stopped': return # on AIX, "<exiting>" processes don't have names if not AIX: assert ret def create_time(self, ret, info): self.assertIsInstance(ret, float) try: self.assertGreaterEqual(ret, 0) except AssertionError: # XXX if OPENBSD and info['status'] == psutil.STATUS_ZOMBIE: pass else: raise # this can't be taken for granted on all platforms # self.assertGreaterEqual(ret, psutil.boot_time()) # make sure returned value can be pretty printed # with strftime time.strftime("%Y %m %d %H:%M:%S", time.localtime(ret)) def uids(self, ret, info): assert is_namedtuple(ret) for uid in ret: self.assertIsInstance(uid, int) self.assertGreaterEqual(uid, 0) def gids(self, ret, info): assert is_namedtuple(ret) # note: testing all gids as above seems not to be reliable for # gid == 30 (nodoby); not sure why. for gid in ret: self.assertIsInstance(gid, int) if not MACOS and not NETBSD: self.assertGreaterEqual(gid, 0) def username(self, ret, info): self.assertIsInstance(ret, str) assert ret def status(self, ret, info): self.assertIsInstance(ret, str) assert ret self.assertNotEqual(ret, '?') # XXX self.assertIn(ret, VALID_PROC_STATUSES) def io_counters(self, ret, info): assert is_namedtuple(ret) for field in ret: self.assertIsInstance(field, (int, long)) if field != -1: self.assertGreaterEqual(field, 0) def ionice(self, ret, info): if LINUX: self.assertIsInstance(ret.ioclass, int) self.assertIsInstance(ret.value, int) self.assertGreaterEqual(ret.ioclass, 0) self.assertGreaterEqual(ret.value, 0) else: # Windows, Cygwin choices = [ psutil.IOPRIO_VERYLOW, psutil.IOPRIO_LOW, psutil.IOPRIO_NORMAL, psutil.IOPRIO_HIGH] self.assertIsInstance(ret, int) self.assertGreaterEqual(ret, 0) self.assertIn(ret, choices) def num_threads(self, ret, info): self.assertIsInstance(ret, int) if APPVEYOR and not ret and info['status'] == 'stopped': return self.assertGreaterEqual(ret, 1) def threads(self, ret, info): self.assertIsInstance(ret, list) for t in ret: assert is_namedtuple(t) self.assertGreaterEqual(t.id, 0) self.assertGreaterEqual(t.user_time, 0) self.assertGreaterEqual(t.system_time, 0) for field in t: self.assertIsInstance(field, (int, float)) def cpu_times(self, ret, info): assert is_namedtuple(ret) for n in ret: self.assertIsInstance(n, float) self.assertGreaterEqual(n, 0) # TODO: check ntuple fields def cpu_percent(self, ret, info): self.assertIsInstance(ret, float) assert 0.0 <= ret <= 100.0, ret def cpu_num(self, ret, info): self.assertIsInstance(ret, int) if FREEBSD and ret == -1: return self.assertGreaterEqual(ret, 0) if psutil.cpu_count() == 1: self.assertEqual(ret, 0) self.assertIn(ret, list(range(psutil.cpu_count()))) def memory_info(self, ret, info): assert is_namedtuple(ret) for value in ret: self.assertIsInstance(value, (int, long)) self.assertGreaterEqual(value, 0) if WINDOWS: self.assertGreaterEqual(ret.peak_wset, ret.wset) self.assertGreaterEqual(ret.peak_paged_pool, ret.paged_pool) self.assertGreaterEqual(ret.peak_nonpaged_pool, ret.nonpaged_pool) self.assertGreaterEqual(ret.peak_pagefile, ret.pagefile) def memory_full_info(self, ret, info): assert is_namedtuple(ret) total = psutil.virtual_memory().total for name in ret._fields: value = getattr(ret, name) self.assertIsInstance(value, (int, long)) self.assertGreaterEqual(value, 0, msg=(name, value)) if LINUX or OSX and name in ('vms', 'data'): # On Linux there are processes (e.g. 'goa-daemon') whose # VMS is incredibly high for some reason. continue self.assertLessEqual(value, total, msg=(name, value, total)) if LINUX: self.assertGreaterEqual(ret.pss, ret.uss) def open_files(self, ret, info): self.assertIsInstance(ret, list) for f in ret: self.assertIsInstance(f.fd, int) self.assertIsInstance(f.path, str) if WINDOWS: self.assertEqual(f.fd, -1) elif LINUX: self.assertIsInstance(f.position, int) self.assertIsInstance(f.mode, str) self.assertIsInstance(f.flags, int) self.assertGreaterEqual(f.position, 0) self.assertIn(f.mode, ('r', 'w', 'a', 'r+', 'a+')) self.assertGreater(f.flags, 0) elif BSD and not f.path: # XXX see: https://github.com/giampaolo/psutil/issues/595 continue assert os.path.isabs(f.path), f try: st = os.stat(f.path) except FileNotFoundError: pass else: assert stat.S_ISREG(st.st_mode), f def num_fds(self, ret, info): self.assertIsInstance(ret, int) self.assertGreaterEqual(ret, 0) def connections(self, ret, info): with create_sockets(): self.assertEqual(len(ret), len(set(ret))) for conn in ret: assert is_namedtuple(conn) check_connection_ntuple(conn) def cwd(self, ret, info): if ret: # 'ret' can be None or empty self.assertIsInstance(ret, str) assert os.path.isabs(ret), ret try: st = os.stat(ret) except OSError as err: if WINDOWS and err.errno in \ psutil._psplatform.ACCESS_DENIED_SET: pass # directory has been removed in mean time elif err.errno != errno.ENOENT: raise else: assert stat.S_ISDIR(st.st_mode) def memory_percent(self, ret, info): self.assertIsInstance(ret, float) assert 0 <= ret <= 100, ret def is_running(self, ret, info): self.assertIsInstance(ret, bool) def cpu_affinity(self, ret, info): self.assertIsInstance(ret, list) assert ret != [], ret cpus = list(range(psutil.cpu_count())) for n in ret: self.assertIsInstance(n, int) self.assertIn(n, cpus) def terminal(self, ret, info): self.assertIsInstance(ret, (str, type(None))) if ret is not None: assert os.path.isabs(ret), ret assert os.path.exists(ret), ret def memory_maps(self, ret, info): for nt in ret: self.assertIsInstance(nt.addr, str) self.assertIsInstance(nt.perms, str) self.assertIsInstance(nt.path, str) for fname in nt._fields: value = getattr(nt, fname) if fname == 'path': if not value.startswith('['): assert os.path.isabs(nt.path), nt.path # commented as on Linux we might get # '/foo/bar (deleted)' # assert os.path.exists(nt.path), nt.path elif fname == 'addr': assert value, repr(value) elif fname == 'perms': if not WINDOWS: assert value, repr(value) else: self.assertIsInstance(value, (int, long)) self.assertGreaterEqual(value, 0) def num_handles(self, ret, info): self.assertIsInstance(ret, int) self.assertGreaterEqual(ret, 0) def nice(self, ret, info): self.assertIsInstance(ret, int) if POSIX: assert -20 <= ret <= 20, ret else: priorities = [getattr(psutil, x) for x in dir(psutil) if x.endswith('_PRIORITY_CLASS')] self.assertIn(ret, priorities) if sys.version_info > (3, 4): self.assertIsInstance(ret, enum.IntEnum) else: self.assertIsInstance(ret, int) def num_ctx_switches(self, ret, info): assert is_namedtuple(ret) for value in ret: self.assertIsInstance(value, (int, long)) self.assertGreaterEqual(value, 0) def rlimit(self, ret, info): self.assertIsInstance(ret, tuple) self.assertEqual(len(ret), 2) self.assertGreaterEqual(ret[0], -1) self.assertGreaterEqual(ret[1], -1) def environ(self, ret, info): self.assertIsInstance(ret, dict) for k, v in ret.items(): self.assertIsInstance(k, str) self.assertIsInstance(v, str) if __name__ == '__main__': from psutil.tests.runner import run_from_name run_from_name(__file__)