fish-shell/tests/checks/pipeline-pgroup.fish
ridiculousfish 82f2d86718 Thread pgroups into builtin_eval
Ensure that if eval is invoked as part of a pipeline, any jobs spawned
by eval will have the same pgroup as the parent job.

Partially fixes #6806
2020-04-26 11:05:50 -07:00

60 lines
2.0 KiB
Fish

# RUN: env fth=%fish_test_helper %fish %s
status job-control full
# Ensure that lots of nested jobs all end up in the same pgroup.
function save_pgroup -a var_name
$fth print_pgrp | read -g $var_name
end
# Here everything should live in the pgroup of the first fish_test_helper.
$fth print_pgrp | read -g global_group | save_pgroup g1 | begin
save_pgroup g2
end | begin
echo (save_pgroup g3) >/dev/null
end
[ "$global_group" -eq "$g1" ] && [ "$g1" -eq "$g2" ] && [ "$g2" -eq "$g3" ]
and echo "All pgroups agreed"
or echo "Pgroups disagreed. Should be in $global_group but found $g1, $g2, $g3"
# CHECK: All pgroups agreed
# Here everything should live in fish's pgroup.
# Unfortunately we don't know what fish's pgroup is (it may not be fish's pid).
# So run it twice and verify that everything agrees; this implies that it could
# not have used any of the pids of the child procs.
function nothing
end
nothing | $fth print_pgrp | read -g a0 | save_pgroup a1 | begin
save_pgroup a2
end
nothing | $fth print_pgrp | read -g b0 | save_pgroup b1 | begin
save_pgroup b2
end
[ "$a0" -eq "$a1" ] && [ "$a1" -eq "$a2" ] \
&& [ "$b0" -eq "$b1" ] && [ "$b1" -eq "$b2" ] \
&& [ "$a0" -eq "$b0" ]
and echo "All pgroups agreed"
or echo "Pgroups disagreed. Found $a0 $a1 $a2, and $b0 $b1 $b2"
# CHECK: All pgroups agreed
# Ensure that eval retains pgroups - #6806.
# Our regex will capture the first pgroup and use a positive lookahead on the second.
$fth print_pgrp | tr \n ' ' 1>&2 | eval '$fth print_pgrp' 1>&2
# CHECKERR: {{(\d+) (?=\1)\d+}}
# Ensure that if a background job launches another background job, that they have different pgroups.
# The pipeline here will arrange for the two pgroups to be printed on the same line, like:
# 123 124
# Our regex will capture the first pgroup and use a negative lookahead on the second.
status job-control full
$fth print_pgrp | begin
tr \n ' '
$fth print_pgrp | tr \n ' ' &
end &
wait
echo
# CHECK: {{(\d+) (?!\1)\d+}}