test.sh

#!/bin/bash

# Show help usage
if [ "$#" -eq "0" ] || [ "$#" -gt "4" ]
then
	printf "Usage: \n\t./test.sh executable input [output] [expected]\n"
	exit 0
fi

echo ">> -------------------------------------------------"

# Check if theres a  variable
if [ -z "$1" ]
then
	echo "[ERROR] NOT SPECIFIED EXECUTABLE FILES!"
	echo "<< -------------------------------------------------"
	exit 1
fi

if [ -z "$2" ]
then
    echo "[ERROR] NOT SPECIFIED FILE FOR TEST!"
    echo "<< -------------------------------------------------"
    exit 1
fi

# Give the default name for out file
OUTPUT_FILE="$2.out"

# If there are a third parameter
if [ ! -z "$3" ]
then
	OUTPUT_FILE="$3"
fi

# Check if file exists and can be executed
if [ -e "$1" ] && [ -s "$1" ] && [ -x "$1" ]
then
	# Execute compiled code and save the result in a test file
	"./$1" "$2" "$OUTPUT_FILE" > /dev/null 2>&1
else
	echo "[ERROR] FILE NOT EXIST, IS EMPTY OR CAN'T BE EXECUTABLE!"
	echo "<< -------------------------------------------------"
	exit 1
fi

# Expected file
EXPECTED_FILE="$2.exp"

# If there are a fourth parameter
if [ ! -z "$4" ]
then
	EXPECTED_FILE="$4"
fi

# Check if the other file exist
# Check if file exists and can be executed
if [ -e "$OUTPUT_FILE" ]
then
	# File EXIST
	echo ">> TESTING $2 WITH BINARY $1" 
else
	echo "[ERROR] OUTPUT FILE NOT EXIST!"
	echo "<< -------------------------------------------------"
	exit 1
fi

# Compara os resultados
DIFF=$(diff -q "$OUTPUT_FILE" "$EXPECTED_FILE")

if [ "$DIFF" != "" ]
then
	if [ "$(command -v diffchecker)" ]
	then
		echo "Opening diff between the expected and output"
		echo "If it's slow please open test.sh and check the comment bellow"
		# Use the following command to make it more faster
		# It will disable open browser after create diff
		# cat "$(whereis diffchecker | cut -d ":" -f 2 | cut -d " " -f 2- | rev | cut -d "/" -f 2- | rev)/$(readlink -- $(whereis diffchecker) | rev | cut -d "/" -f 2- | rev)/transmit.js" | tr '\n' '\f' | sed -e 's/(0, _opener2.default)(url, function () {\f        process.exit();\f      });/\/\/(0, _opener2.default)(url, function () {\f        \/\/process.exit();\f      \/\/});/' | tr '\f' '\n' > transmit.js && sudo mv transmit.js "$(whereis diffchecker | cut -d ":" -f 2 | cut -d " " -f 2- | rev | cut -d "/" -f 2- | rev)/$(readlink -- $(whereis diffchecker) | rev | cut -d "/" -f 2- | rev)/transmit.js"
		diffchecker --expires day "$OUTPUT_FILE" "$EXPECTED_FILE"
		#vimdiff "$2.out" "$2.exp"
	else
		#echo "vimdiff isn't installed"
		#echo "Install vimdiff to check what's wrong"
		echo "Install diffchecker with 'sudo npm install -g diffchecker' to check what's wrong"
	fi
    echo "[ERROR] RESULT IS DIFFERENT FROM WHAT IS EXPECTED"
    echo "<< -------------------------------------------------"
    exit 1
fi

echo ">> COMPLETED! EVERYTHING IS CORRECT WITH $2 :)"
echo "<< -------------------------------------------------"
exit 0