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finit/test/tenv/lib.sh
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2021-02-27 23:23:03 +01:00

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#!/bin/sh
# Small framework for executing tests in a test environment.
#
# Copyright (c) 2021 Jacques de Laval <jacques@de-laval.se>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
assert_num_children() {
assert "$1 services are running" "$(texec pgrep -P 1 "$2" | wc -l)" -eq "$1"
}
texec() {
# shellcheck disable=SC2154
"$TEST_DIR/tenv/exec.sh" "$finit_pid" "$@"
}
pause() {
echo "Press any key to continue... "
read -r REPLY
}
toggle_finit_debug() {
say 'Toggle finit debug'
texec initctl debug
sleep 0.5
}
color_reset='\e[0m'
fg_red='\e[1;31m'
fg_green='\e[1;32m'
fg_yellow='\e[1;33m'
log() {
printf "< %s > %b%b%b %s\n" "$0" "$1" "$2" "$color_reset" "$3"
}
assert() {
__assert_msg=$1
shift
if [ ! "$@" ]; then
log "$fg_red" ✘ "$__assert_msg ($*)"
return 1
fi
log "$fg_green" ✔ "$__assert_msg"
}
retry() {
__retry_cmd=$1
shift
case "$#" in
2)
__retry_n=$1
__retry_sleep=$2
;;
1)
__retry_n=$1
__retry_sleep=0.1
;;
*)
__retry_n=50
__retry_sleep=0.1
;;
esac
for _ in $(seq 1 "$__retry_n"); do
sleep "$__retry_sleep"
__retry_cmd_out=$(eval "$__retry_cmd") && \
echo "$__retry_cmd_out" && \
return 0
done
__retry_cmd_exit="$?"
echo "$__retry_cmd_out"
return "$__retry_cmd_exit"
}
say() {
log "$fg_yellow" • "$@"
}
teardown() {
test_status="$?"
if type test_teardown > /dev/null 2>&1 ; then
test_teardown
fi
log "$color_reset" '--' ''
if [ "$test_status" -eq 0 ]; then
log "$fg_green" 'TEST PASS' ''
else
log "$fg_red" 'TEST FAIL' ''
fi
if [ -n "${finit_pid+x}" ]; then
texec kill -SIGUSR2 1
fi
wait
if [ -d "$TENV_ROOT/var/lock" ]; then
chmod +r "$TENV_ROOT/var/lock"
fi
rm -f "$TENV_ROOT"/running_test.pid
}
trap teardown EXIT
TENV_ROOT="${TENV_ROOT:-$(pwd)/${TEST_DIR}/tenv-root}"
export TENV_ROOT
# shellcheck source=/dev/null
. "$TENV_ROOT/../test.env"
# Setup test environment
if [ -n "${DEBUG:-}" ]; then
FINIT_ARGS="${FINIT_ARGS:-} finit.debug=on"
fi
# shellcheck disable=2086
"$TEST_DIR/tenv/start.sh" finit ${FINIT_ARGS:-} &
finit_ppid=$!
echo "$finit_ppid" > "$TENV_ROOT"/running_test.pid
>&2 echo "Hint: Execute 'TENV_ROOT=$TENV_ROOT $TEST_DIR/tenv/enter.sh' to enter the test namespace"
log "$color_reset" 'Setup of test environment done' ''
finit_pid=$(retry "pgrep -P $finit_ppid")
tty=/dev/$(texec cat /sys/class/tty/console/active)
texec cat "$tty" &
sleep 1