fix scripts/test fail if program doesn't exist before build phase

scripts/test

@@ -13,12 +13,6 @@ TARGET=all
 PROGRAM="$1"
 MODE_ARG="$2"
 
-if [[ ! -x "$PROGRAM" ]]; then
-  echo "[!] Invalid program: \"$PROGRAM\""
-  echo "$USAGE"
-  exit 1
-fi
-
 if [[ "$MODE_ARG" =~ run.* ]]; then
   MODE="$MODE_ARG"
   REBUILD=false
@@ -39,4 +33,11 @@ fi
 if [[ "$REBUILD" == true ]]; then
   make clean $TARGET
 fi
+
+if [[ ! -x "$PROGRAM" ]]; then
+  echo "[!] Invalid program: \"$PROGRAM\""
+  echo "$USAGE"
+  exit 1
+fi
+
 LD_LIBRARY_PATH=./lib $PROXY "$PROGRAM" $@