working return integer tests as part of gtest

game/main.cpp

@@ -10,7 +10,9 @@ int main(int argc, char** argv) {
   while (true) {
     // run the runtime in a loop so we can reset the game and have it restart cleanly
     printf("gk %d.%d\n", versions::GOAL_VERSION_MAJOR, versions::GOAL_VERSION_MINOR);
-    exec_runtime(argc, argv);
+    if (exec_runtime(argc, argv) == 2) {
+      return 0;
+    }
   }
   return 0;
 }