code: @Test public void testMetrics() throws IOException, InterruptedException {
    HttpGet get=new HttpGet(DefaultServer.getDefaultServerURL() + "/path");
    TestHttpClient client=new TestHttpClient();
    try {
      HttpResponse result=client.execute(get);
      Assert.assertEquals(200,result.getStatusLine().getStatusCode());
      Assert.assertEquals("Hello",HttpClientUtils.readResponse(result));
      latchHandler.await();
      latchHandler.reset();
      MetricsHandler.MetricResult metrics=metricsHandler.getMetrics();
      Assert.assertEquals(1,metrics.getTotalRequests());
      Assert.assertTrue(metrics.getMaxRequestTime() > 0);
      Assert.assertEquals(metrics.getMinRequestTime(),metrics.getMaxRequestTime());
      Assert.assertEquals(metrics.getMaxRequestTime(),metrics.getTotalRequestTime());
      result=client.execute(get);
      Assert.assertEquals(200,result.getStatusLine().getStatusCode());
      Assert.assertEquals("Hello",HttpClientUtils.readResponse(result));
      latchHandler.await();
      latchHandler.reset();
      metrics=metricsHandler.getMetrics();
      Assert.assertEquals(2,metrics.getTotalRequests());
    }
    finally {
      client.getConnectionManager().shutdown();
    }
  }
  