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from __future__ import annotations
import os
import time
import psutil
import pytest
from plumbum import NOHUP, local
try:
from plumbum.cmd import bash, echo
except ImportError:
bash = None
echo = None
from plumbum._testtools import skip_on_windows
from plumbum.path.utils import delete
@skip_on_windows
class TestNohupLocal:
def read_file(self, filename):
assert filename in os.listdir(".")
with open(filename) as f:
return f.read()
@pytest.mark.usefixtures("testdir")
def test_slow(self):
delete("nohup.out")
sp = bash["slow_process.bash"]
sp & NOHUP
time.sleep(0.5)
assert self.read_file("slow_process.out") == "Starting test\n1\n"
assert self.read_file("nohup.out") == "1\n"
time.sleep(1)
assert self.read_file("slow_process.out") == "Starting test\n1\n2\n"
assert self.read_file("nohup.out") == "1\n2\n"
time.sleep(2)
delete("nohup.out", "slow_process.out")
def test_append(self):
delete("nohup.out")
output = echo["This is output"]
output & NOHUP
time.sleep(0.2)
assert self.read_file("nohup.out") == "This is output\n"
output & NOHUP
time.sleep(0.2)
assert self.read_file("nohup.out") == "This is output\n" * 2
delete("nohup.out")
def test_redir(self):
delete("nohup_new.out")
output = echo["This is output"]
output & NOHUP(stdout="nohup_new.out")
time.sleep(0.2)
assert self.read_file("nohup_new.out") == "This is output\n"
delete("nohup_new.out")
(output > "nohup_new.out") & NOHUP
time.sleep(0.2)
assert self.read_file("nohup_new.out") == "This is output\n"
delete("nohup_new.out")
output & NOHUP
time.sleep(0.2)
assert self.read_file("nohup.out") == "This is output\n"
delete("nohup.out")
def test_closed_filehandles(self):
proc = psutil.Process()
file_handles_prior = proc.num_fds()
sleep_proc = local["sleep"]["1"] & NOHUP
sleep_proc.wait()
file_handles_after = proc.num_fds()
assert file_handles_prior >= file_handles_after
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