public static void main(String[] args) {

    var proxy = new WizardTowerProxy(new IvoryTower());
    proxy.enter(new Wizard("Red wizard"));
    proxy.enter(new Wizard("White wizard"));
    proxy.enter(new Wizard("Black wizard"));
    proxy.enter(new Wizard("Green wizard"));
    proxy.enter(new Wizard("Brown wizard"));

  }
@Test
  void shouldExecuteApplicationWithoutException() {
    assertDoesNotThrow(() -> App.main(new String[]{}));
  }