AbstractLogAggregatorTest.java

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 *
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package etm.contrib.aggregation.log;

import etm.core.aggregation.Aggregator;
import etm.core.aggregation.RootAggregator;
import etm.core.metadata.AggregatorMetaData;
import etm.core.monitor.EtmMonitor;
import etm.core.monitor.EtmMonitorContext;
import etm.core.monitor.EtmPoint;
import etm.core.monitor.FlatMonitor;
import etm.core.monitor.NullMonitor;
import etm.core.monitor.event.EtmMonitorEvent;
import junit.framework.TestCase;

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

/**
 * Tests basic behavior for logging aggregators.
 *
 * @author void.fm
 * @version $Revision$
 */
public class AbstractLogAggregatorTest extends TestCase {

  /**
   * Tests the log aggregator filtering mechanism. If filtering works
   * the overall implementation works.
   */
  public void testFilter() {
    EtmMonitor monitor = new FlatMonitor();
    monitor.start();

    TestLogAggregator aggregator = new TestLogAggregator(new RootAggregator());

    aggregator.setFilterPattern("Action.+;ClassName;");

    aggregator.add(createCollectedPoint(monitor, "Action Foo"));
    aggregator.add(createCollectedPoint(monitor, "Action Bar"));
    aggregator.add(createCollectedPoint(monitor, "AnotherPoint"));
    aggregator.add(createCollectedPoint(monitor, "ClassName"));
    aggregator.add(createCollectedPoint(monitor, "Action Bar"));

    assertEquals(4, aggregator.points.size());
  }


  /**
   * Tests the log aggregator filtering mechanism. If filtering works
   * the overall implementation works.
   */
  public void testWithoutFilter() {
    EtmMonitor monitor = new FlatMonitor();
    monitor.start();

    TestLogAggregator aggregator = new TestLogAggregator(new RootAggregator());

    aggregator.add(createCollectedPoint(monitor, "Action Foo"));
    aggregator.add(createCollectedPoint(monitor, "Action Bar"));
    aggregator.add(createCollectedPoint(monitor, "AnotherPoint"));
    aggregator.add(createCollectedPoint(monitor, "ClassName"));
    aggregator.add(createCollectedPoint(monitor, "Action Bar"));

    assertEquals(5, aggregator.points.size());
  }

  protected EtmPoint createCollectedPoint(EtmMonitor aMonitor, String aSymbolicName) {
    EtmPoint point = aMonitor.createPoint(aSymbolicName);
    point.collect();
    return point;
  }


  class TestLogAggregator extends AbstractLogAggregator {
    private List points = new ArrayList();

    public TestLogAggregator(Aggregator aAggregator) {
      super(aAggregator);
      init(new EtmMonitorContext() {

        public EtmMonitor getEtmMonitor() {
          throw new UnsupportedOperationException();
        }

        public Timer getScheduler() {
          throw new UnsupportedOperationException();
        }

        public void fireEvent(EtmMonitorEvent event) {
          //ignore
        }
      });
    }

    protected void logMeasurement(EtmPoint aPoint) {
      points.add(aPoint);
    }

    public AggregatorMetaData getMetaData() {
      throw new UnsupportedOperationException();
    }
  }
}