fish-shell/tests/checks/cmdsub-limit.fish
Johannes Altmanninger 8bf8b10f68 Extended & human-friendly keys
See the changelog additions for user-visible changes.

Since we enable/disable terminal protocols whenever we pass terminal ownership,
tests can no longer run in parallel on the same terminal.

For the same reason, readline shortcuts in the gdb REPL will not work anymore.
As a remedy, use gdbserver, or lobby for CSI u support in libreadline.

Add sleep to some tests, otherwise they fall (both in CI and locally).

There are two weird failures on FreeBSD remaining, disable them for now
https://github.com/fish-shell/fish-shell/pull/10359/checks?check_run_id=23330096362

Design and implementation borrows heavily from Kakoune.

In future, we should try to implement more of the kitty progressive
enhancements.

Closes #10359
2024-04-02 14:35:16 +02:00

86 lines
2.7 KiB
Fish

# RUN: %fish %s | %filter-ctrlseqs
# This tests various corner cases involving command substitution.
# Test cmdsubs which spawn background processes - see #7559.
# If this hangs, it means that fish keeps trying to read from the write
# end of the cmdsub pipe (which has escaped).
# FIXME: we need to mark full job control for sleep to get its own pgid;
# otherwise $last_pid will return fish's pgid! It's always been so!
status job-control full
echo (command sleep 1000000 & ; set -g sleep_pid $last_pid ; echo local)
# CHECK: local
echo $sleep_pid
# CHECK: {{[1-9]\d*}}
kill $sleep_pid ; echo $status
# CHECK: 0
status job-control interactive
# Test limiting the amount of data we'll substitute.
set fish_read_limit 512
function subme
set -l x (string repeat -n $argv x)
echo $x
end
# Command sub just under the limit should succeed.
set a (subme 511)
set --show a
#CHECK: $a: set in global scope, unexported, with 1 elements
#CHECK: $a[1]: |{{x{510}x}}|
# Command sub at the limit should fail
set b (string repeat -n 512 x)
set saved_status $status
test $saved_status -eq 122
or echo expected status 122, saw $saved_status >&2
set --show b
#CHECKERR: {{.*}}: Too much data emitted by command substitution so it was discarded
#CHECKERR: set b (string repeat -n 512 x)
#CHECKERR: ^~~~~~~~~~~~~~~~~~~~~~~^
# Command sub over the limit should fail
set c (subme 513)
set --show c
#CHECK: $c: set in global scope, unexported, with 1 elements
#CHECK: $c[1]: ||
#CHECKERR: {{.*}}: Too much data emitted by command substitution so it was discarded
#CHECKERR: set -l x (string repeat -n $argv x)
#CHECKERR: ^~~~~~~~~~~~~~~~~~~~~~~~~^
#CHECKERR: in function 'subme' with arguments '513'
#CHECKERR: called on line {{.*}}
#CHECKERR: in command substitution
#CHECKERR: called on line {{.*}}
# Make sure output from builtins outside of command substitution is not affected
string repeat --max 513 a
#CHECK: {{a{512}a}}
# Same builtin in a command substitution is affected
echo this will fail (string repeat --max 513 b) to output anything
set saved_status $status
test $saved_status -eq 122
or echo expected status 122, saw $saved_status >&2
#CHECKERR: {{.*}}: Too much data emitted by command substitution so it was discarded
#CHECKERR: echo this will fail (string repeat --max 513 b) to output anything
#CHECKERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~^
# Check that it's reset to the default when unset
begin
set -l fish_read_limit 5
echo (string repeat -n 10 a)
# CHECKERR: {{.*}}cmdsub-limit.fish (line {{\d+}}): Too much data emitted by command substitution so it was discarded
# CHECKERR: echo (string repeat -n 10 a)
# CHECKERR: ^~~~~~~~~~~~~~~~~~~~~~^
end
echo (string repeat -n 10 a)
# CHECK: aaaaaaaaaa