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systemd/tools/check-version.sh
Zbigniew Jędrzejewski-Szmek ffb7406ba9 tests: add a smoke test for --version option in binaries
This is very similar to (and directly based on) the test for --help. I think
it's nice to do this: the test is very quick, but it'll catch cases where we
forgot to hook up the option, or forgot to exit after printing --version, and
it'll also increase our test coverage a bit.
2022-04-05 22:18:31 +02:00

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#!/usr/bin/env bash
# SPDX-License-Identifier: LGPL-2.1-or-later
set -eu
set -o pipefail
# Note: 'grep ... >/dev/null' instead of just 'grep -q' is used intentionally
# here, since 'grep -q' exits on the first match causing SIGPIPE being
# sent to the sender.
BINARY="${1:?}"
VERSION="${2:?}"
export SYSTEMD_LOG_LEVEL=info
if [[ ! -x "$BINARY" ]]; then
echo "$BINARY is not an executable"
exit 1
fi
# --version prints something. Also catches case where args are ignored.
if ! "$BINARY" --version | grep . >/dev/null; then
echo "$(basename "$BINARY") --version output is empty"
exit 2
fi
# no --version output to stderr
if "$BINARY" --version 2>&1 1>/dev/null | grep .; then
echo "$(basename "$BINARY") --version prints to stderr"
exit 3
fi
# project version appears in version output
out="$("$BINARY" --version)"
if ! grep -F "$VERSION" >/dev/null <<<"$out"; then
echo "$(basename "$BINARY") --version output does not match '$VERSION': $out"
exit 4
fi