check_output() {
	testname=$1
	cmdtorun=$2
	expectedoutput=$3
	usestdout=$4
	expoutfile=$(mktemp)
	actualoutfile=$(mktemp)
	ret=0

	printf "$expectedoutput" > $expoutfile
	if [ $usestdout -eq 1 ]; then
		eval $cmdtorun > $actualoutfile 2> /dev/null
	else
		eval $cmdtorun 2> $actualoutfile 1> /dev/null
	fi

	cmp $expoutfile $actualoutfile  2>&1 > /dev/null
	if [ $? -eq 1 ]; then
		printf "$testname:\n"
		printf "\tWanted:\n"
		cat $expoutfile
		printf "\n\tGot:\n"
		cat $actualoutfile
		printf "\n\n"
		ret=1
	fi
	if [ $? -eq 2 ]; then
		printf "cmp error\n"
		ret=1
	fi

	rm $expoutfile $actualoutfile
	return $ret
}

check_stdout() {
	check_output "$1" "$2" "$3" 1
}

check_stderr() {
	check_output "$1" "$2" "$3" 0
}