42_SIDE_minishell_test/unitests.sh

#!/bin/bash
cd $(dirname $0)

MINISHELL="../minishell"
TEST_DIR="./tests/"
DEFAULT_DIR="./tests/defaults/"

# COLORS
	RED="\e[0;31m"
	GREEN="\e[0;32m"
	YELLOW="\e[0;33m"
	BLUE="\e[0;34m"
	MAGENTA="\e[0;35m"
	CYAN="\e[0;36m"
	WHITE="\e[0;37m"
	
	B_RED="\e[1;31m"
	B_GREEN="\e[1;32m"
	B_YELLOW="\e[1;33m"
	B_BLUE="\e[1;34m"
	B_MAGENTA="\e[1;35m"
	B_CYAN="\e[1;36m"
	B_WHITE="\e[1;37m"
	
	ENDCO="\e[0m"

# copy the executable to current directory
	cp $MINISHELL .

# globale variables
	UNIT_TEST=0
	SUCCESS_TEST=0
	TOTAL_TEST=0
	TOTAL_SUCCESS=0
	LINE_NUMBER=0
	FILES_BEFORE="$(ls .)"
	mkdir -p ./logs
	echo "" > ./logs/bash_log.txt
	echo "" > ./logs/minishell_log.txt
	BASH_LOG="./logs/bash_log.txt"
	MINISHELL_LOG="./logs/minishell_log.txt"

# default list of files to be use
	default_files="$( find $DEFAULT_DIR | tail -n+2 )"

# print usage
	function print_usage
	{
		echo -en $GREEN"usage : "
		echo -en  $CYAN"bash unitest.sh [help] [files list ...]\n"
		echo -en $GREEN"\n[help]\n"
		echo -en  $CYAN"print usage\n"
		echo -en $GREEN"\n[files list ...] if empty, defaults files will be used :\n"
		echo -en  $CYAN"$default_files"
		echo -en $ENDCO"\n"
		echo     ""
	}

# to delete the files created during the script
	function delete_files
	{
		FILES_AFTER="$(ls .)"
		DIFF_FILES="$(comm -3 <(echo "$FILES_BEFORE") <(echo "$FILES_AFTER"))"
		while read line_diff
		do
			rm -rf "$line_diff"
		done < <(echo "$DIFF_FILES")
	}

# check for arguments, like options or files list
# if no file in arguments, default file list is used
	list_files="$default_files"
	if [ $# -gt 0 ]
	then
		if [ "$1" == "help" ]
		then
			print_usage
			delete_files
			exit 0
		else
			list_files=""
			for (( i = 1 ; i <= "$#" ; i++ ))
			do
				# the ! is for indirect parameter expansion
				# $i expand in integers 1,2,3...
				# $1,$2,$3... expand in arguments of process call
				FILE="${!i/#/$TEST_DIR}"
				FILE="${FILE%.sh}"
				FILE="${FILE/%/.sh}"
				if [ -e "$FILE" ]
				then
					if [ -n "$list_files" ]
					then
						list_files+=$'\n'
					fi
					list_files+="$FILE"
				else
					print_usage
					echo "        <$FILE> is not a valid file or option, see usage above"
					exit 0
				fi
			done
		fi
	fi

# if print option, print next command
	function print_next_command
	{
		TEXT=$1
		CMD=$2
		COLOR=$3
		INDENT="$(for (( i=1; i<=${#TEXT}; i++ )); do echo -n ' '; done)"
		echo -en $COLOR"$TEXT"$YELLOW
		echo -n "${CMD//$'\n'/$'\n'$INDENT}"
		echo -e $ENDCO
	}

# function that will launch the command in bash and minishell and compare them
	function test_minishell
	{
		# execute commands in bash, and logs results
		bash_execution=$( echo "$@" | bash 2>/dev/null )

		minishell_execution=$( echo "$@" | ./minishell 2>/dev/null )

		#compare output
		if [ "$bash_execution" = "$minishell_execution" ]
		then
			(( SUCCESS_TEST++ ))
			(( TOTAL_SUCCESS++ ))
		else
			ERROR_CMD="ERROR line $(( $LINE_NUMBER - 1 )), command : "
			print_next_command "$ERROR_CMD" "$@" "$CYAN"
			# print simple log
			echo -e $B_WHITE"\n\n$@\n-----------"$ENDCO >>$BASH_LOG
			echo "$bash_execution" >> $BASH_LOG
			echo -e $B_WHITE"\n\n$@\n-----------"$ENDCO >>$MINISHELL_LOG
			echo "$minishell_execution" >> $MINISHELL_LOG
		fi
	}

# function to print the results
# receive parameters : file name, numerator, denominator
	function print_results
	{
		echo -en $B_WHITE"results for $1 : "$ENDCO
		if [ $2 -eq 0 ]
		then
			echo -en $B_RED $2 $ENDCO
		elif [ $2 -eq $3 ]
		then
			echo -en $B_GREEN $2 $ENDCO
		else
			echo -en $B_MAGENTA $2 $ENDCO
		fi
		echo -e $B_WHITE"/ $3"$ENDCO
	}

# the main loop: go through the files and call the compare func on each commands
# parse tests files line by line, grouping lines non-separated by an empty line
# if line start with # it's ignore
	for i in $list_files
	do
		filename=$i
		echo -e "\n"$B_YELLOW"test file : $i"$ENDCO
		command_test=""
		LINE_NUMBER=0
		LAST_LINE_NUMBER=$(wc -l < $filename)
		UNIT_TEST=0
		SUCCESS_TEST=0
		# write name of file in log files
		echo -en $B_YELLOW "\n\n\nfile: $filename\n" $ENDCO >>$BASH_LOG
		echo -en $B_YELLOW "\n\n\nfile: $filename\n" $ENDCO >>$MINISHELL_LOG
		# do the loop
		while read line
		do
			(( LINE_NUMBER++ ))
			if [ -n "$line" ]
			then
				# if line start with # skip it
				if [ "${line:0:1}" != "#" ]
				then
					if [ "$command_test" == "" ]
					then
						command_test="$line"
					else
						command_test+=$'\n'
						command_test+="$line"
					fi
					if [ $LINE_NUMBER -eq $LAST_LINE_NUMBER ]
					then
						(( UNIT_TEST++ ))
						(( TOTAL_TEST++ ))
						test_minishell "$command_test"
					fi
				fi
			elif [ -z "$line" ] && [ -n "$command_test" ]
			then
				(( UNIT_TEST++ ))
				(( TOTAL_TEST++ ))
				test_minishell "$command_test"
				command_test=""
			fi
		done < $filename
		print_results $i $SUCCESS_TEST $UNIT_TEST
	done

# print the total results
	if [ -n "$list_files" ]
	then
		echo ""
		print_results "all" $TOTAL_SUCCESS $TOTAL_TEST
	fi

# ask to show the diff
# -rsn1 will stop read after first key pressed
	read -rsn1 -p 'if you want to see the diff, press "y"' DIFF
	if [[ "${DIFF,,}" == y ]]
	then
		diff -y --width=100 --color=always "$BASH_LOG" "$MINISHELL_LOG"
	fi

# delete files created during tests
	delete_files