fish-shell/tests/pexpects/signals.py
Fabian Boehm 9e9c73e46a tests/signals.py: Kill leftover sleeps from python
This starts two sleep processes and expects them to be killed on
SIGHUP.

Unfortunately, if this ever fails the second run will also fail
because it'll see the old sleep still lying around (because it'll run
for 130 seconds).

So, what we do is:

1. Keep the pids for these specific sleeps
2. Check if any of them are still running (and only fail for them)
3. Kill them from python

Fixes #9152
2022-08-23 18:47:52 +02:00

113 lines
3.2 KiB
Python

#!/usr/bin/env python3
from pexpect_helper import SpawnedProc
sp = SpawnedProc(timeout=10)
send, sendline, sleep, expect_prompt, expect_re, expect_str = (
sp.send,
sp.sendline,
sp.sleep,
sp.expect_prompt,
sp.expect_re,
sp.expect_str,
)
from time import sleep
import os
import signal
import subprocess
import sys
expect_prompt()
# Verify that SIGINT inside a command sub cancels it.
# Negate the pid to send to the pgroup (which should include sleep).
sendline("while true; echo (sleep 1000); end")
sleep(0.5)
os.kill(-sp.spawn.pid, signal.SIGINT)
expect_prompt()
sendline("sleep 10 &")
expect_prompt()
send("\x03")
sleep(0.010)
sendline("jobs")
expect_prompt("sleep.10")
sendline("kill %1")
expect_prompt()
# Verify that the fish_postexec handler is called after SIGINT.
sendline("function postexec --on-event fish_postexec; echo fish_postexec spotted; end")
expect_prompt()
sendline("read")
expect_re("\r\n?read> $")
sleep(0.200)
os.kill(sp.spawn.pid, signal.SIGINT)
expect_str("fish_postexec spotted")
expect_prompt()
# Verify that the fish_kill_signal is set.
sendline(
"functions -e postexec; function postexec --on-event fish_postexec; echo fish_kill_signal $fish_kill_signal; end"
)
expect_prompt()
sendline("sleep 5")
sleep(0.200)
subprocess.call(["pkill", "-INT", "-P", str(sp.spawn.pid), "sleep"])
expect_str("fish_kill_signal 2")
expect_prompt()
sendline("sleep 5")
sleep(0.200)
subprocess.call(["pkill", "-TERM", "-P", str(sp.spawn.pid), "sleep"])
expect_str("fish_kill_signal 15")
expect_prompt()
# Verify that sending SIGHUP to the shell, such as will happen when the tty is
# closed by the terminal, terminates the shell and the foreground command and
# any background commands run from that shell.
#
# Save the pids for later to check if they are still running.
pids = []
send("sleep 130 & echo $last_pid\r")
pids += [expect_re("\d+\r\n").group().strip()]
expect_prompt()
send("sleep 131 & echo $last_pid\r")
pids += [expect_re("\d+\r\n").group().strip()]
expect_prompt()
send("sleep 9999999\r")
sleep(0.300) # ensure fish kicks off the above sleep before it gets HUP - see #7288
os.kill(sp.spawn.pid, signal.SIGHUP)
# Verify the spawned fish shell has exited.
sp.spawn.wait()
# Verify all child processes have been killed. We don't use `-p $pid` because
# if the shell has a bug the child processes might have been reparented to pid
# 1 rather than killed.
proc = subprocess.run(
["pgrep", "-l", "-f", "sleep 13"], stdout=subprocess.PIPE, stderr=subprocess.PIPE
)
remaining=[]
if proc.returncode == 0:
# If any sleeps exist, we check them against our pids,
# to avoid false-positives (any other `sleep 13xyz` running on the system)
print(proc.stdout)
for line in proc.stdout.split(b'\n'):
pid = line.split(b' ', maxsplit=1)[0].decode("utf-8")
if pid in pids:
remaining += [pid]
# Kill any remaining sleeps ourselves, otherwise rerunning this is pointless.
for pid in remaining:
try:
os.kill(int(pid), signal.SIGTERM)
except ProcessLookupError:
continue
if remaining:
# We still have processes left over!
print("Commands were still running!")
print(remaining)
sys.exit(1)