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https://github.com/fish-shell/fish-shell
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a698b1f96c
This re-enables the test that eval retains pgroups, from #6806. The old version was racey and failed a lot. In the new version, we use temp files to resolve the race.
66 lines
2.1 KiB
Fish
66 lines
2.1 KiB
Fish
# RUN: env fth=%fish_test_helper %fish %s
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status job-control full
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# Ensure that lots of nested jobs all end up in the same pgroup.
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function save_pgroup -a var_name
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$fth print_pgrp | read -g $var_name
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end
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# Here everything should live in the pgroup of the first fish_test_helper.
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$fth print_pgrp | read -g global_group | save_pgroup g1 | begin
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save_pgroup g2
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end | begin
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echo (save_pgroup g3) >/dev/null
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end
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[ "$global_group" -eq "$g1" ] && [ "$g1" -eq "$g2" ] && [ "$g2" -eq "$g3" ]
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and echo "All pgroups agreed"
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or echo "Pgroups disagreed. Should be in $global_group but found $g1, $g2, $g3"
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# CHECK: All pgroups agreed
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# Here everything should live in fish's pgroup.
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# Unfortunately we don't know what fish's pgroup is (it may not be fish's pid).
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# So run it twice and verify that everything agrees; this implies that it could
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# not have used any of the pids of the child procs.
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function nothing
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end
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nothing | $fth print_pgrp | read -g a0 | save_pgroup a1 | begin
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save_pgroup a2
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end
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nothing | $fth print_pgrp | read -g b0 | save_pgroup b1 | begin
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save_pgroup b2
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end
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[ "$a0" -eq "$a1" ] && [ "$a1" -eq "$a2" ] \
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&& [ "$b0" -eq "$b1" ] && [ "$b1" -eq "$b2" ] \
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&& [ "$a0" -eq "$b0" ]
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and echo "All pgroups agreed"
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or echo "Pgroups disagreed. Found $a0 $a1 $a2, and $b0 $b1 $b2"
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# CHECK: All pgroups agreed
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# Ensure that eval retains pgroups - #6806.
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set -l tmpfile1 (mktemp)
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set -l tmpfile2 (mktemp)
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$fth print_pgrp > $tmpfile1 | eval '$fth print_pgrp > $tmpfile2'
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read -l pgrp1 < $tmpfile1
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read -l pgrp2 < $tmpfile2
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[ "$pgrp1" -eq "$pgrp2" ]
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and echo "eval pgroups agreed"
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or echo "eval pgroups disagreed, meaning eval does not retain pgroups: $pgrp1 $pgrp2"
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# CHECK: eval pgroups agreed
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rm $tmpfile1 $tmpfile2
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# Ensure that if a background job launches another background job, that they have different pgroups.
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# The pipeline here will arrange for the two pgroups to be printed on the same line, like:
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# 123 124
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# Our regex will capture the first pgroup and use a negative lookahead on the second.
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status job-control full
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$fth print_pgrp | begin
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tr \n ' '
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$fth print_pgrp | tr \n ' ' &
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end &
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wait
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echo
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# CHECK: {{(\d+) (?!\1)\d+}}
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