@Test
public void testRoute_PickInvokers() {

    String rule = "var result = new java.util.ArrayList(invokers.size());" +
            "for (i=0;i<invokers.size(); i++){ " +
            "if (invokers.get(i).isAvailable()) {" +
            "result.add(invokers.get(i)) ;" +
            "}" +
            "} ; " +
            "return result;";
    String script = "function route(invokers,invocation,context){" + rule + "} route(invokers,invocation,context)";
    Router router = new ScriptRouterFactory().getRouter(getRouteUrl(script));
    List<Invoker<String>> invokers = new ArrayList<Invoker<String>>();
    Invoker<String> invoker1 = new MockInvoker<String>(false);
    Invoker<String> invoker2 = new MockInvoker<String>(true);
    Invoker<String> invoker3 = new MockInvoker<String>(true);
    invokers.add(invoker1);
    invokers.add(invoker2);
    invokers.add(invoker3);
    List<Invoker<String>> fileredInvokers = router.route(invokers, invokers.get(0).getUrl(), new RpcInvocation());
    Assert.assertEquals(2, fileredInvokers.size());
    Assert.assertEquals(invoker2, fileredInvokers.get(0));
    Assert.assertEquals(invoker3, fileredInvokers.get(1));
}