@Test
public void testWithoutCount() throws Exception {

    URL url = URL.valueOf("test://test");
    url = url.addParameter(Constants.INTERFACE_KEY,
            "com.alibaba.dubbo.rpc.file.TpsService");
    url = url.addParameter(Constants.TPS_LIMIT_RATE_KEY, 5);
    Invoker<TpsLimitFilterTest> invoker = new MyInvoker<TpsLimitFilterTest>(url);
    Invocation invocation = new MockInvocation();
    filter.invoke(invoker, invocation);
}