make test_sdl_mouse more robust

Author: kripken

tests/sdl_mouse.c

@@ -43,21 +43,27 @@ void one() {
   }
 }
 
+void main_2();
+
 int main() {
   SDL_Init(SDL_INIT_VIDEO);
   SDL_Surface *screen = SDL_SetVideoMode(600, 450, 32, SDL_HWSURFACE);
 
   SDL_Rect rect = { 0, 0, 600, 450 };
   SDL_FillRect(screen, &rect, 0x2244ffff);
 
+  emscripten_async_call(main_2, 3000); // avoid startup delays and intermittent errors
+
+  return 0;
+}
+
+void main_2() {
   emscripten_run_script("window.simulateMouseEvent(10, 20, -1)"); // move from 0,0 to 10,20
   emscripten_run_script("window.simulateMouseEvent(10, 20, 0)"); // click
   emscripten_run_script("window.simulateMouseEvent(10, 20, 0)"); // click some more, but this one should be ignored through PeepEvent
   emscripten_run_script("window.simulateMouseEvent(30, 77, -1)"); // move some more
   emscripten_run_script("window.simulateMouseEvent(30, 77, 1)"); // trigger the end
 
   emscripten_set_main_loop(one, 0);
-
-  return 0;
 }