#!/bin/bash
# check for errors under valgrind or sanitizers.

error()
{
  echo "instrumented testing failed on line $1"
  exit 1
}
trap 'error ${LINENO}' ERR

# define suitable post and prefixes for testing options
case $1 in
  --valgrind)
    echo "valgrind testing started"
    prefix=''
    exeprefix='valgrind --error-exitcode=42'
    postfix='1>/dev/null'
  ;;
  --sanitizer)
    echo "sanitizer testing started"
    prefix='!'
    exeprefix=''
    postfix='2>&1 | grep "runtime error:"'
  ;;
  *)
    echo "unknown testing started"
    prefix=''
    exeprefix=''
    postfix=''
  ;;
esac

# simple command line testing
for args in "eval" \
            "go nodes 1000" \
            "go depth 10" \
            "go movetime 1000" \
            "go wtime 8000 btime 8000 winc 500 binc 500" \
            "bench 128 1 10 default depth"
do

   echo "$prefix $exeprefix ./stockfish $args $postfix"
   eval "$prefix $exeprefix ./stockfish $args $postfix"

done

# more general testing, following an uci protocol exchange
cat << EOF > game.exp
 set timeout 10
 spawn $exeprefix ./stockfish

 send "uci\n"
 expect "uciok"

 send "ucinewgame\n"
 send "position startpos\n"
 send "go nodes 1000\n"
 expect "bestmove"

 send "position startpos moves e2e4 e7e6\n"
 send "go nodes 1000\n"
 expect "bestmove"

 send "position fen 5rk1/1K4p1/8/8/3B4/8/8/8 b - - 0 1\n"
 send "go depth 30\n"
 expect "bestmove"

 send "quit\n"
 expect eof

 # return error code of the spawned program, useful for valgrind
 lassign [wait] pid spawnid os_error_flag value
 exit \$value
EOF

for exps in game.exp
do

  echo "$prefix expect game.exp $postfix"
  eval "$prefix expect game.exp $postfix"

done

rm game.exp

echo "instrumented testing OK"