#!/bin/bash

cd -- "$(dirname "$0")"
if test -z "$CAT"; then
	CAT=../cat
fi
N=5
c="$PREFIX $CAT"

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
}

test_file ()
{
	diff <($c < $1) $1 > /dev/null
	report $? "file_$1"
}


file_1 () { test_file 1; }
file_2 () { test_file 2; }
file_3 () { test_file 3; }
file_4 () { test_file 4; }
file_5 () { test_file 5; }

dash ()
{
	diff <($c - < 4) 4 > /dev/null
	report $? "dash"
}

dash_many ()
{
	diff <($c - - - - < 4) 4 > /dev/null
	report $? "dash_many"
}

file_one ()
{
	diff <($c 4) 4 > /dev/null
	report $? "file_one"
}

file_many ()
{
	diff <($c 1 2 3 4 5) 12345 > /dev/null
	report $? "file_many"
}

file_dash ()
{
	diff <($c 1 2 3 4 - < 5) 12345 > /dev/null
	report $? "file_dash"
}

uflag ()
{
	touch tmp; rm tmp
	touch tmp1; rm tmp1
	touch tmp2; rm tmp2
	(
	    printf 123
	    sleep 0.1
	    cat tmp > tmp1
	) | $c -u > tmp
	printf 123 > tmp2
	diff tmp tmp1 > /dev/null &&
	diff tmp tmp2 > /dev/null
	report $? "uflag"
	rm tmp tmp1 tmp2
}


if test $# = 0; then
	set $(printf 'file_%i\n' $(seq 1 $N)) dash dash_many file_one file_many file_dash uflag
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-POSIX | wc -l) = 0; then
		ret=1
	else
		ret=2
	fi
fi
rm result
exit $ret