#!/bin/bash
# subdirmk - test suite runner helper script
# Copyright various contributors - see top level README.
# SPDX-License-Identifier: LGPL-2.0-or-later
# There is NO WARRANTY.

set -e

branch=$(git symbolic-ref -q HEAD || test $? = 1)
base=$(git merge-base tested HEAD)

git branch -D test-failed 2>&1 ||:

case "$branch" in
refs/heads/tested|refs/heads/test-failed)
	echo >&2 "unexpectedly on branch $branch"; exit 1 ;;
refs/heads/*)
	branch=${branch#refs/heads/} ;;
*)
	branch='';
esac

restore-branch () {
	if [ "$branch" ]; then git checkout $branch; fi
}

git checkout --detach
git clean -xdff

if ! git rebase --exec 'tests/check && git branch -f tested' $base; then
	git branch -f test-failed
	git rebase --abort
	echo >&2 '^ ignore previous message from git-rebase!'
	echo >&2 'Test failed, made local branch ref test-failed'
	restore-branch
	exit 1
fi

restore-branch