content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.metrics.os.linux;
  
  import com.alibaba.metrics.Gauge;
  import com.alibaba.metrics.ManualClock;
  import com.alibaba.metrics.Metric;
  import com.alibaba.metrics.MetricName;
  import org.junit.Assert;
  import org.junit.Test;
  
  import java.util.Map;
  import java.util.concurrent.TimeUnit;
  
  public class NetTrafficGaugeSetTest {
  
      @SuppressWarnings("unchecked")
      @Test
      public void testNetTrafficMetrics() {
  
          ManualClock clock = new ManualClock();
  
          NetTrafficGaugeSet netTrafficGaugeSet = new NetTrafficGaugeSet(
                  "src/test/resources/proc_net_dev", 10, TimeUnit.MILLISECONDS, clock);
  
          Map<MetricName, Metric> metrics = netTrafficGaugeSet.getMetrics();
  
          Assert.assertEquals(16, metrics.keySet().size());
  
          clock.addMillis(20);
  
          netTrafficGaugeSet.setFilePath("src/test/resources/proc_net_dev_2");
  
          Gauge<Double> gauge1 = (Gauge)metrics.get(MetricName.build("net.in.bytes").tagged("face", "eth0"));
          Gauge<Double> gauge2 = (Gauge)metrics.get(MetricName.build("net.out.bytes").tagged("face", "eth0"));
  
          Assert.assertEquals(1000000.0d, gauge1.getValue(), 0.0001d);
          Assert.assertEquals(500000.0d, gauge2.getValue(), 0.0001d);
  
          clock.addMillis(2000);
  
          netTrafficGaugeSet.setFilePath("src/test/resources/proc_net_dev_3");
  
          Assert.assertEquals(200000.0d, gauge1.getValue(), 0.0001d);
          Assert.assertEquals(150000.0d, gauge2.getValue(), 0.0001d);
      }
  
      @SuppressWarnings("unchecked")
      @Test
      public void testLinuxKernel310() {
          ManualClock clock = new ManualClock();
  
          NetTrafficGaugeSet netTrafficGaugeSet = new NetTrafficGaugeSet(
                  "src/test/resources/proc_net_dev_kernel_3.10", 10, TimeUnit.MILLISECONDS, clock);
  
          Map<MetricName, Metric> metrics = netTrafficGaugeSet.getMetrics();
  
          clock.addMillis(200);
  
          netTrafficGaugeSet.setFilePath("src/test/resources/proc_net_dev_kernel_3.10_2");
  
          Gauge<Double> gauge1 = (Gauge)metrics.get(MetricName.build("net.in.bytes").tagged("face", "eth0"));
          Gauge<Double> gauge2 = (Gauge)metrics.get(MetricName.build("net.in.packets").tagged("face", "eth0"));
  
          Assert.assertEquals(10000.0d, gauge1.getValue(), 0.0001d);
          Assert.assertEquals(30000.0d, gauge2.getValue(), 0.0001d);
      }
  }
  