#!/bin/bash
set -e
exit=0

rm -rf scenario
mkdir scenario
mkdir scenario/dir scenario/target-dir
touch scenario/target-file scenario/target-dir/file
ln -s ../target-file scenario/dir/link-file
ln -s ../target-dir scenario/dir/link-dir

testone() {
    rm -rf scenario-gnu scenario-uutils
    cp -a scenario scenario-gnu
    cp -a scenario scenario-uutils

    echo "============================= $@ ============================"
    env -C scenario-gnu gnu"$@"
    env -C scenario-uutils coreutils "$@"

    if ! diff -U0 <(env -C scenario-gnu find | env -C scenario-gnu xargs ls -ldh) <(env -C scenario-uutils find | env -C scenario-uutils xargs ls -ldh); then
        exit=1
    fi
}


for option in "" -H -L -P --dereference --no-dereference "--dereference -L" "--no-dereference -L" "--no-dereference -P"; do
    testone chmod $option -R go-rwx dir
    testone chmod $option -R go-rwx dir/link-dir
    testone chmod $option -R go-rwx dir/link-file
done

if [ "$SUDO_USER" ]; then
    for option in "" -H -L -P "--dereference -H" "--dereference -L" --no-dereference; do
        testone chown $option -R $SUDO_USER dir
        testone chown $option -R $SUDO_USER dir/link-dir
        testone chown $option -R $SUDO_USER dir/link-file
    done
fi

if [ "$SUDO_USER" ]; then
    for option in "" -H -L -P "--dereference -H" "--dereference -L" --no-dereference; do
        testone chgrp $option -R $SUDO_USER dir
        testone chgrp $option -R $SUDO_USER dir/link-dir
        testone chgrp $option -R $SUDO_USER dir/link-file
    done
fi
rm -r scenario scenario-gnu scenario-uutils

exit $exit