#! /bin/sh

if ! [ -d tests/ ]; then
	echo >&2 "Error: could not find tests/ directory."
	exit 1
fi

if ! [ -d tests/expected/ ]; then
	echo >&2 "Error: could not find tests/expected/ directory."
	exit 1
fi

if ! [ -x ./shell ]; then
	echo >&2 "Error: could not find ./shell executable."
	exit 1
fi

for testfile in tests/test.*.in; do
	base=$(basename "$testfile" .in)
	num=${base#test.}
	name=${num#*.}
	num=${num%%.*}
	expectout=tests/expected/"$base".out
	expecterr=tests/expected/"$base".err
	out=tests/output."$num"
	err=tests/error."$num"

	printf "Running test %2s: %-25s ... " "$num" "$name"
	timeout 3 ./shell "$testfile" > tests/output."$num" 2> tests/error."$num"

	if ! cmp -s "$out" "$expectout"; then
		tput setaf 1
		tput bold
		echo FAILED
		tput sgr0
		echo "    Files $out and $expectout differ, please review."
	elif [ -s "$err" ] && ! [ -s "$expecterr" ]; then
		tput setaf 1
		tput bold
		echo FAILED
		tput sgr0
		echo "    Received unexpected error output (see $err)."
	elif ! [ -s "$err" ] && [ -s "$expecterr" ]; then
		tput setaf 1
		tput bold
		echo FAILED
		tput sgr0
		echo "    Missing expected error output (see $expecterr)."
	else
		rm -f "$out" "$err"
		tput setaf 2
		tput bold
		echo SUCCESS
		tput sgr0
	fi
done