test.sh

if [ ! -d "./tests" ]; then
	echo "Error: tests directory not found!"
	exit 1
fi

if [ ! -e "./a.out" ]; then 
	echo "Error: a.out not found!"
	exit 1
fi

if [ ! -x "./a.out" ]; then 
	echo "Error: a.out not executable"
	exit 1
fi

usage()
{
	echo 
	echo "Usage: $0 [test]"
	echo 
	echo "Where test is the name of the desired test"
	echo
	exit 1
}

# if [[ ! "$1" =~ ^[0-9]+$ ]]; then 
# 	echo "Error: argument is not a number"
# 	usage
# fi

# if [ "$1" -lt "1" -o "$1" -gt "5" ]; then 
# 	echo "Error: argument must be a number in range [1..5]"
# 	usage
# fi

mkdir -p ./output

if [ "$#" -gt "0" ]; then 
	test_file=./tests/$1
	echo $test_file

	name=`basename ${test_file} .txt`
	expected_file=${test_file}.expected
	output_file=./output/${name}.output 
	diff_file=./output/${name}.diff 
	./a.out ${taskNumber} < ${test_file} > ${output_file}
	diff -Bw ${expected_file} ${output_file} > ${diff_file}
	echo 
	if [ -s ${diff_file} ]; then 
		echo "${name}: Output does not match expected:"
		echo "------------------------------------------------------"
		cat ${diff_file}
	else 
		echo "${name}; OK"
	fi
	echo "======================================================="
else

	let count=0
	let all=0

	for test_file in $(find ./tests -type f -name "*.txt" | sort); do 
		all=$((all+1))
		name=`basename ${test_file} .txt`
		expected_file=${test_file}.expected
		output_file=./output/${name}.output 
		diff_file=./output/${name}.diff 
		./a.out ${taskNumber} < ${test_file} > ${output_file}
		diff -Bw ${expected_file} ${output_file} > ${diff_file}
		echo 
		if [ -s ${diff_file} ]; then 
			echo "${name}: Output does not match expected:"
			echo "------------------------------------------------------"
			cat ${diff_file}
		else 
			count=$((count+1))
			echo "${name}; OK"
		fi
		echo "======================================================="
	done

	echo 
	echo "Passed $count tests out of $all for task ${taskNumber}"
	echo
fi 

rm -rf ./output