#!/bin/bash

set -e

tests=0

failed=0

H=$PWD

function run_one

{

    D=`mktemp -d`

    if [ "$D" == "" ] ; then

	echo mktemp failed!

    fi

    cd $D

    fail=0

    if ! $H/$f > .out 2>&1 ; then

	echo $f failed with error code $?

	fail=1

    fi

    if [ -s .out -a ! -r $H/$f.out ] ; then

	echo $f generated unexpected output:

	cat .out

	cp .out $H/$f.err

	fail=1

    elif [ -r $H/$f.out ] && ! diff -u $H/$f.out .out > /dev/null ; then

	echo $f output changed:

	diff -u $H/$f.out .out && true

	cp .out $H/$f.err

	fail=1

    fi

    cd $H

    rm -r $D

    return $fail

}

TESTS=$@

if [ "$TESTS" == "" ] ; then

    TESTS=`ls test-* | grep -Ev "\.|~"`

fi

for f in $TESTS ; do

    echo -n "."

    if ! run_one $f ; then

	failed=$[$failed + 1]

    fi

    tests=$[$tests + 1]

done

echo

echo Ran $tests tests, $failed failed

if [ $failed -gt 0 ] ; then

    exit 1

fi