MetricsRecordTest.java

// Copyright 2016 Twitter. All rights reserved.
//
// Licensed 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.twitter.heron.spi.metricsmgr.metrics;

import java.util.ArrayList;
import java.util.List;

import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

public class MetricsRecordTest {
  private static final int N = 100;
  private static final String SOURCE = "source";
  private static final String CONTEXT = "context";
  private final List<MetricsRecord> records = new ArrayList<MetricsRecord>();

  @Before
  public void before() throws Exception {
    records.clear();
    for (int i = 0; i < N; i++) {
      MetricsRecord record =
          new MetricsRecord(i,
              SOURCE + i,
              new ArrayList<MetricsInfo>(),
              new ArrayList<ExceptionInfo>(),
              CONTEXT + i);
      records.add(record);
    }
  }

  @After
  public void after() throws Exception {
    records.clear();
  }

  /**
   * Method: getTimestamp()
   */
  @Test
  public void testGetTimestamp() throws Exception {
    for (int i = 0; i < N; i++) {
      Assert.assertTrue(records.get(i).getTimestamp() == i);
    }
  }

  /**
   * Method: getSource()
   */
  @Test
  public void testGetSource() throws Exception {
    for (int i = 0; i < N; i++) {
      Assert.assertTrue(records.get(i).getSource().equals(SOURCE + i));
    }
  }

  /**
   * Method: getMetrics()
   */
  @Test
  public void testGetMetrics() throws Exception {
    int items = 0;
    for (int i = 0; i < N; i++) {
      for (MetricsInfo info : records.get(i).getMetrics()) {
        items++;
      }
    }
    Assert.assertTrue(items == 0);
  }

  /**
   * Method: getExceptions()
   */
  @Test
  public void testGetExceptions() throws Exception {
    int items = 0;
    for (int i = 0; i < N; i++) {
      for (ExceptionInfo info : records.get(i).getExceptions()) {
        items++;
      }
    }
    Assert.assertTrue(items == 0);
  }

  /**
   * Method: getContext()
   */
  @Test
  public void testGetContext() throws Exception {
    for (int i = 0; i < N; i++) {
      Assert.assertTrue(records.get(i).getContext().equals(CONTEXT + i));
    }
  }
}