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