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1   package org.apache.helix.monitoring;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import org.testng.AssertJUnit;
23  import org.testng.annotations.Test;
24  
25  
26  public class TestStatCollector
27  {
28    @Test(groups={ "unitTest" })
29    public void TestCollectData()
30    {
31      StatCollector collector = new StatCollector();
32      
33      int nPoints = 100;
34      for (int i = 0; i< nPoints; i++)
35      {
36        collector.addData(i*1000);
37      }
38      AssertJUnit.assertEquals(collector.getNumDataPoints(), nPoints);
39      AssertJUnit.assertEquals((long)collector.getMax(), 99000);
40      AssertJUnit.assertEquals((long)collector.getTotalSum(), 4950000);
41      AssertJUnit.assertEquals((long)collector.getPercentile(40), 39400);
42      AssertJUnit.assertEquals((long)collector.getMean(), 49500);
43      AssertJUnit.assertEquals((long)collector.getMin(), 0);
44      
45      collector.reset();
46      
47      AssertJUnit.assertEquals(collector.getNumDataPoints(), 0);
48      AssertJUnit.assertEquals((long)collector.getMax(), 0);
49      AssertJUnit.assertEquals((long)collector.getTotalSum(), 0);
50      AssertJUnit.assertEquals((long)collector.getPercentile(40), 0);
51      AssertJUnit.assertEquals((long)collector.getMean(), 0);
52      AssertJUnit.assertEquals((long)collector.getMin(), 0);
53      
54    }
55  }