#!/bin/bash

cd -- "$(dirname "$0")/../__sum"
N=14
algo=ck
if test -z "$CKSUM"; then
	CKSUM=../${algo}sum
fi
s="$PREFIX $CKSUM"

report ()
{
	if test $1 = 0; then
		printf "\033[1;32mTest %s OK\033[m\n" "$2"
	else
		printf "\033[1;31mTest %s FAILED\033[m\n" "$2"
	fi
}

multiple_files_order ()
{
	$s $(seq 1 $N) | sed -e 's/[\t ]\+/ /g' | cut -d ' ' -f 3 > tmp1
	< $algo cut -d ' ' -f 3 > tmp2
	diff tmp1 tmp2 > /dev/null
	report $? "multiple_files_order"
	rm tmp1 tmp2
}

multiple_files_sum ()
{
	$s $(seq 1 $N) | sed -e 's/[\t ]\+/ /g' | cut -d ' ' -f 1,2 | sort > tmp1
	< $algo cut -d ' ' -f 1,2 | sort > tmp2
	diff tmp1 tmp2 > /dev/null
	report $? "multiple_files_sum"
	rm tmp1 tmp2
}

multiple_files ()
{
	$s $(seq 1 $N) > tmp1
	diff tmp1 $algo > /dev/null
	report $? "multiple_files"
	rm tmp1
}

one_file ()
{
	$s 1 > tmp1
	< $algo head -n 1 > tmp2
	diff tmp1 tmp2 > /dev/null
	report $? "one_file"
	rm tmp1 tmp2
}

stdin ()
{
	$s < 1 | sed 's/[\t ]\+/ /' > tmp1
	< $algo head -n 1 | cut -d ' ' -f 1,2 > tmp2
	diff tmp1 tmp2 > /dev/null
	report $? "stdin"
	rm tmp1 tmp2
}

dash ()
{
	$s - < 1 | sed 's/[\t ]\+/ /g' | tee tmp3 | cut -d ' ' -f 1,2 > tmp1
	< $algo head -n 1 | cut -d ' ' -f 1,2 > tmp2
	diff tmp1 tmp2 > /dev/null &&
	    test $(grep -o ' ' < tmp3 | wc -l) = 2 &&
	    test -n "$(cut -d ' ' -f 3 < tmp3)"
	report $? "dash"
	rm tmp1 tmp2 tmp3
}

massive ()
{
	diff <($s $(cat bytes)) ${algo}-bytes > /dev/null
	report $? "massive"
}


if test $# = 0; then
	set multiple_files_order multiple_files_sum multiple_files \
	    one_file stdin dash massive
fi
(
for f in $@; do
	$f
done
) | tee result
! grep FAILED < result > /dev/null
ret=$?
if test $ret != 0; then
	if test $(grep FAILED < result | grep -v NON-STANDARD | wc -l) = 0; then
		ret=1
	else
		ret=2
	fi
fi
rm result
exit $ret