arith5.0   [plain text]

# $FreeBSD$

failures=0

check() {
	if [ "$2" != "$3" ]; then
		failures=$((failures+1))
		echo "For $1, expected $3 actual $2"
	fi
}

unset a
check '$((1+${a:-$((7+2))}))' "$((1+${a:-$((7+2))}))" 10
check '$((1+${a:=$((2+2))}))' "$((1+${a:=$((2+2))}))" 5
check '$a' "$a" 4

exit $((failures != 0))