#!/bin/bash

make -j 8 2>&1 > /dev/null
if [[ $? != 0 ]]; then
  # skip this version
  exit 125
fi
git=`realpath ./git`

rm -rf .test_repo || true
mkdir .test_repo

cd .test_repo
$git init

echo HELLO > a
$git add a
$git commit -m 'initial_commit'
$git branch --track new_branch

$git checkout master
echo HELLO >> a
$git add a
$git commit -m 'second_commit'

$git checkout new_branch

touch .git/index.lock
if $git merge --ff-only master 2>&1 | grep -F "index.lock" ; then
  echo OK
  exit 0
fi
echo Message is missing
exit 1