#!/bin/bash

[ -f testing.sh ] && . testing.sh

if [ "$(id -u)" -ne 0 ]
then
  echo "$SHOWSKIP: chown (not root)"
  return 2>/dev/null
  exit
fi

# We chown between user "root" and the last user in /etc/passwd,
# and group "root" and the last group in /etc/group.
USR="$(sed -n '$s/:.*//p' /etc/passwd)"
GRP="$(sed -n '$s/:.*//p' /etc/group)"
# Or if that fails, we assume we're on Android...
: "${USR:=shell}"
: "${GRP:=daemon}"

# Set up a little testing hierarchy

rm -rf testdir &&
mkdir testdir &&
touch testdir/file
F=testdir/file

# Wrapper to reset groups and return results

OUT="&& stat --format '%U %G' $F"

#testing "name" "command" "result" "infile" "stdin"

# Basic smoketest
testing "initial" "chown root:root $F $OUT" "root root\n" "" ""
testing "usr:grp" "chown $USR:$GRP $F $OUT" "$USR $GRP\n" "" ""
testing "root"    "chown root $F $OUT" "root $GRP\n" "" ""
# TODO: can we test "owner:"?
testing ":grp"    "chown root:root $F && chown :$GRP $F $OUT" \
    "root $GRP\n" "" ""
testing ":"       "chown $USR:$GRP $F && chown : $F $OUT" \
    "$USR $GRP\n" "" ""

rm -rf testdir