#!/bin/sh

if [ ! -z "$srcdir" ]; then
   testdir=$srcdir/glcpp/tests
   glcpp=`pwd`/glcpp/glcpp
else
   testdir=.
   glcpp=../glcpp
fi

trap 'rm $test.valgrind-errors; exit 1' INT QUIT

usage ()
{
    cat <<EOF
Usage: glcpp [options...]

Run the test suite for mesa's GLSL pre-processor.

Valid options include:

	--testdir=<DIR>	Use tests in the given <DIR> (default is ".")
	--valgrind	Run the test suite a second time under valgrind
EOF
}

test_specific_args ()
{
    test="$1"

    tr "\r" "\n" < "$test" | grep 'glcpp-args:' | sed -e 's,^.*glcpp-args: *,,'
}

# Parse command-line options
for option; do
    case "${option}" in
        "--help")
            usage
            exit 0
            ;;
        "--valgrind")
	    do_valgrind=yes
            ;;
        "--testdir="*)
            testdir="${option#--testdir=}"
            ;;
        *)
	    echo "Unrecognized option: $option" >&2
	    echo >&2
	    usage
	    exit 1
            ;;
        esac
done

total=0
pass=0
clean=0

echo "====== Testing for correctness ======"
for test in $testdir/*.c; do
    echo -n "Testing $test..."
    $glcpp $(test_specific_args $test) < $test > $test.out 2>&1
    total=$((total+1))
    if cmp $test.expected $test.out >/dev/null 2>&1; then
	echo "PASS"
	pass=$((pass+1))
    else
	echo "FAIL"
	diff -u $test.expected $test.out
    fi
done

echo ""
echo "$pass/$total tests returned correct results"
echo ""

if [ "$do_valgrind" = "yes" ]; then
    echo "====== Testing for valgrind cleanliness ======"
    for test in $testdir/*.c; do
	echo -n "Testing $test with valgrind..."
	valgrind --error-exitcode=31 --log-file=$test.valgrind-errors $glcpp $(test_specific_args $test) < $test >/dev/null 2>&1
	if [ "$?" = "31" ]; then
	    echo "ERRORS"
	    cat $test.valgrind-errors
	else
	    echo "CLEAN"
	    clean=$((clean+1))
	    rm $test.valgrind-errors
	fi
    done

    echo ""
    echo "$pass/$total tests returned correct results"
    echo "$clean/$total tests are valgrind-clean"
fi

if [ "$pass" = "$total" ] && [ "$do_valgrind" != "yes" ] || [ "$pass" = "$total" ]; then
    exit 0
else
    exit 1
fi