def test_pid_0_exists_or_not() -> None:
# Make sure that all interfaces report that PID 0 either
# exists or doesn't exist.
if pypsutil.pid_exists(0):
# PID 0 shows up
assert 0 in pypsutil.pids()
pypsutil.Process(0)
for proc in pypsutil.process_iter():
if proc.pid == 0:
break
else:
raise ValueError("PID 0 not found")
for proc in pypsutil.process_iter_available():
if proc.pid == 0:
break
else:
raise ValueError("PID 0 not found")
else:
# PID 0 doesn't show up
assert 0 not in pypsutil.pids()
with pytest.raises(pypsutil.NoSuchProcess):
pypsutil.Process(0)
for proc in pypsutil.process_iter():
assert proc.pid != 0
for proc in pypsutil.process_iter_available():
assert proc.pid != 0
def test_cpu_num_valid() -> None:
ncpus = os.cpu_count()
assert ncpus
for proc in pypsutil.process_iter():
try:
cpu = proc.cpu_num()
except pypsutil.NoSuchProcess:
continue
assert cpu == -1 or 0 <= cpu < ncpus
def test_proc_not_exists() -> None:
assert not pypsutil.pid_exists(-1)
for pid in pypsutil.pids():
assert pid >= 0
proc = get_dead_process()
# Process just exited
assert not proc.is_running()
assert not proc.is_running()
assert not pypsutil.pid_exists(proc.pid)
assert proc.pid not in pypsutil.pids()
for iter_proc in pypsutil.process_iter():
assert iter_proc.pid != proc.pid
for iter_proc in pypsutil.process_iter_available():
assert iter_proc.pid != proc.pid
def test_proc_exists() -> None:
# Make sure all APIs report that the current process exists
pid = os.getpid()
assert pypsutil.pid_exists(pid)
assert pid in pypsutil.pids()
proc = pypsutil.Process(pid)
assert proc.is_running()
assert proc.is_running()
for proc in pypsutil.process_iter():
if proc.pid == pid:
break
else:
raise ValueError("Current process not found")
for proc in pypsutil.process_iter_available():
if proc.pid == pid:
break
else:
raise ValueError("Current process not found")
def process_iter() -> Iterator[Process]:
for proc in pypsutil.process_iter():
yield Process._wrap(proc) # pylint: disable=protected-access