test

#!/bin/bash

set -e

not ()
{
    ! "$@"
}

cd "$(dirname -- "$0")"

if [[ ! -e /.dockerenv ]] #not running in docker
then
    ./lint
fi

T=$(mktemp -d -- "${TMPDIR:-/tmp/}$(basename -- "$0").XXXXXX")
trap 'rm -rf -- "${T:?}"' EXIT

trap 'echo "Error on line $LINENO." >&2' ERR

echo 'Testing with a missing DEST' >&2

mkdir -- "${T:?}/src"
cat >"${T:?}/.backup_include" <<EOD
${T:?}/src
${T:?}/missing
EOD

not ./lnbackup "${T:?}/.backup_include" "${T:?}/dest"

echo >&2
echo 'Testing with an existing backup' >&2

mkdir  --         "${T:?}/dest"

./lnbackup "${T:?}/.backup_include" "${T:?}/dest"
not ./lnbackup "${T:?}/.backup_include" "${T:?}/dest"

echo >&2
echo 'Testing with various file names, duplicate files, a symbolic link, a directory, and a fifo' >&2

CRAZY_FILENAME='~`!@#$%^&*()-_=+[{]}'\\'|;:'"'"'",<.>? '
echo ''          >"${T:?}/src/${CRAZY_FILENAME:?}"
echo ''          >"${T:?}/src/-hyphen"
echo ''          >"${T:?}/src/.hidden"
echo ''          >"${T:?}/src/       "
echo 'identical' >"${T:?}/src/identical1"
cp -p  --         "${T:?}/src/identical1" \
                  "${T:?}/src/identical2"
echo 'different' >"${T:?}/src/different"
ln -s missing     "${T:?}/src/symboliclink"
mkdir  --         "${T:?}/src/dir"
mkfifo --         "${T:?}/src/fifo"

sleep 1 #prevent backup from running twice in the same second

./lnbackup "${T:?}/.backup_include" "${T:?}/dest"

[[ -d "${T:?}/dest/Latest/${T:?}/src" ]]
[[ -f "${T:?}/dest/Latest/${T:?}/src/${CRAZY_FILENAME:?}" ]]
[[ -f "${T:?}/dest/Latest/${T:?}/src/-hyphen" ]]
[[ -f "${T:?}/dest/Latest/${T:?}/src/.hidden" ]]
[[ -f "${T:?}/dest/Latest/${T:?}/src/       " ]]
[[ "${T:?}/dest/Latest/${T:?}/src/identical1" -ef "${T:?}/dest/Latest/${T:?}/src/identical2" ]]
[[ ! ( "${T:?}/dest/Latest/${T:?}/src/identical1" -ef "${T:?}/src/identical1" ) ]]
[[ ! ( "${T:?}/dest/Latest/${T:?}/src/different" -ef "${T:?}/dest/Latest/${T:?}/src/identical1" ) ]]
[[ -h "${T:?}/dest/Latest/${T:?}/src/symboliclink" ]]
[[ -d "${T:?}/dest/Latest/${T:?}/src/dir" ]]
[[ ! -e "${T:?}/dest/Latest/${T:?}/src/fifo" ]]

echo >&2
echo 'Testing with a duplicate file, and without perl' >&2

cp -pPR -- "${T:?}/dest/Latest" \
           "${T:?}/dest/Previous"
cp -p   -- "${T:?}/src/identical1" \
           "${T:?}/src/identical3"

perl () { ! :; } #disable perl
export -f perl

sleep 1 #prevent backup from running twice in the same second

./lnbackup "${T:?}/.backup_include" "${T:?}/dest"

[[ "${T:?}/dest/Latest/${T:?}/src/identical1" -ef "${T:?}/dest/Previous/${T:?}/src/identical1" ]]
[[ "${T:?}/dest/Latest/${T:?}/src/identical3" -ef "${T:?}/dest/Previous/${T:?}/src/identical1" ]]

echo >&2

find -- "${T:?}"

trap - ERR

if command -v docker >/dev/null && [[ ! -e /.dockerenv ]] #not running in docker
then
    echo >&2
    docker run --rm -v "${PWD:?}":/wd -w /wd debian ./"$(basename -- "$0")" #run in docker
fi