tests: move tests to a directory per utility

* cfg.mk: Adjust syntax check exclusion paths.
* tests/local.mk: Adjust for renamed tests.

tests/timeout/timeout-group.sh

@@ -0,0 +1,103 @@
+#!/bin/sh
+# test program group handling
+
+# Copyright (C) 2011-2023 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ timeout
+require_trap_signame_
+require_kill_group_
+
+# construct a program group hierarchy as follows:
+#  timeout-group - foreground group
+#    group.sh - separate group
+#      timeout.cmd - same group as group.sh
+#
+# We then send a SIGINT to the "separate group"
+# to simulate what happens when a Ctrl-C
+# is sent to the foreground group.
+
+setsid true || skip_ "setsid required to control groups"
+
+printf '%s\n' '#!'"$SHELL" > timeout.cmd || framework_failure_
+cat >> timeout.cmd <<\EOF
+trap 'touch int.received; exit' INT
+touch timeout.running
+count=$1
+until test -e int.received || test $count = 0; do
+  sleep 1
+  count=$(expr $count - 1)
+done
+EOF
+chmod a+x timeout.cmd
+
+cat > group.sh <<EOF
+#!$SHELL
+trap '' INT
+timeout --foreground 25 ./timeout.cmd 20&
+wait
+EOF
+chmod a+x group.sh
+
+check_timeout_cmd_running()
+{
+  local delay="$1"
+  test -e timeout.running ||
+    { sleep $delay; return 1; }
+}
+
+# Terminate any background processes
+cleanup_() { kill $pid 2>/dev/null && wait $pid; }
+
+# Start above script in its own group.
+# We could use timeout for this, but that assumes an implementation.
+setsid ./group.sh & pid=$!
+# Wait 6.3s for timeout.cmd to start
+retry_delay_ check_timeout_cmd_running .1 6 || fail=1
+# Simulate a Ctrl-C to the group to test timely exit
+kill -INT -- -$pid
+wait
+test -e int.received || fail=1
+
+rm -f int.received timeout.running
+
+
+# Ensure cascaded timeouts work
+# or more generally, ensure we timeout
+# commands that create their own group
+# This didn't work before 8.13.
+
+start=$(date +%s)
+
+# Note the first timeout must send a signal that
+# the second is handling for it to be propagated to the command.
+# SIGINT, SIGTERM, SIGALRM etc. are implicit.
+timeout -sALRM 30 timeout -sINT 25 ./timeout.cmd 20 & pid=$!
+# Wait 6.3s for timeout.cmd to start
+retry_delay_ check_timeout_cmd_running .1 6 || fail=1
+kill -ALRM $pid # trigger the alarm of the first timeout command
+wait $pid
+ret=$?
+test $ret -eq 124 ||
+  skip_ "timeout returned $ret. SIGALRM not handled?"
+test -e int.received || fail=1
+
+end=$(date +%s)
+
+test $(expr $end - $start) -lt 20 ||
+  skip_ "timeout.cmd didn't receive a signal until after sleep?"
+
+Exit $fail