#! /bin/bash
set -e

failed() {
  echo FAILED
  status=1
  cat $errors
  echo
}

case "$TEST_COMPILER" in 
"" )
  validate() {
    ./cparse -- "$@"
  }
  ;;
* )
  validate() {
    $TEST_COMPILER -c "$@"
  }
  ;;
esac

if test $# = 0; then
  set -- tests/*.c
fi

mkdir -p errors
rm -f errors/*
status=0

for test; do
  printf "*** $test: "
  errors=${test//tests/errors}
  case $test in
  tests/fail-* )
    if validate $test 2> $errors > /dev/null; then
      echo UNEXPECTEDLY SUCCEEDED
      status=1
    else
      echo OK
    fi
    ;;
  * )
    if validate $test 2> $errors > /dev/null; then
      echo OK
    else
      failed
    fi
    ;;
  esac
done

# make sure we can parse ourselves, and that if we do it twice we
# get the same answer both times
#
# really we should compile the results and check they match what
# the compiler produces without our involvement

for path in *.c; do
  printf "*** $path: "
  errors=errors/${path}.errors
  once=errors/${path%.c}.i
  twice=errors/${path%.c}.j
  object=errors/${path%.c}.o
  rm -f ${once} ${twice} ${errors}
  echo ./cparse --cpp ${CC} ${ALL_CFLAGS} -- ${path} > ${once} > $errors
  if ! ./cparse --cpp ${CC} ${ALL_CFLAGS} -- ${path} > ${once} 2>> $errors; then
    failed
  elif ! ./cparse --no-cpp -- ${once} > ${twice} 2> $errors; then
    failed
  elif ! diff -u ${once} ${twice} > $errors 2>&1; then
    failed
  elif ! ${CC} ${ALL_CFLAGS} -o ${object} -c ${once} 2> $errors; then
    failed
  else
    echo OK
  fi
done

exit $status