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zsh/Test/B11kill.ztst
Chris Down 69c247de2f 45463: test: kill: Document why we use SIGURG
See discussion in workers/45460.
2020-02-18 19:35:18 +00:00

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# Tests for the kill builtin.
#
# The exit codes 11 and 19 in this file don't mean anything special; they're
# just exit codes which are specific enough that the failure of `kill` itself
# can be differentiated from exiting due to executing a trap.
%test
# Correct invocation
if zmodload zsh/system &>/dev/null; then
(
trap 'exit 19' TERM
kill $sysparams[pid]
)
else
ZTST_skip='Cannot zmodload zsh/system, skipping kill with no sigspec'
fi
19:kill with no sigspec
if zmodload zsh/system &>/dev/null; then
(
trap 'exit 11' USR1
kill -USR1 $sysparams[pid]
)
else
ZTST_skip='Cannot zmodload zsh/system, skipping kill with sigspec'
fi
11:kill with sigspec
# Incorrect invocation
(
kill a b c
)
3:kill with multiple wrong inputs should increment status
?(eval):kill:2: illegal pid: a
?(eval):kill:2: illegal pid: b
?(eval):kill:2: illegal pid: c
(
kill -INT a b c
)
3:kill with sigspec and wrong inputs should increment status
?(eval):kill:2: illegal pid: a
?(eval):kill:2: illegal pid: b
?(eval):kill:2: illegal pid: c
(
kill
)
1:kill with no arguments
?(eval):kill:2: not enough arguments
(
kill -INT
)
1:kill with sigspec only
?(eval):kill:2: not enough arguments
# Regression tests: `kill ''` should not result in `kill 0`.
#
# We use SIGURG where an explicit sigspec can be provided as:
#
# 1. By default it's non-terminal, so even if we regress, we won't kill the
# test runner and other processes in the process group since we'll stop
# running this test before we get to the plain kill (and thus SIGTERM)
# cases;
# 2. It's also unlikely to be sent for any other reason during the process
# lifetime, so the test shouldn't be flaky.
(
trap 'exit 11' URG
kill -URG ''
)
1:kill with empty pid and sigspec should not send signal to current process group
?(eval):kill:3: illegal pid:
(
trap 'exit 19' TERM
kill ''
)
1:Plain kill with empty pid should not send signal to current process group
?(eval):kill:3: illegal pid: