content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.metrics;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  
  import org.junit.Before;
  import org.junit.Test;
  
  import java.util.Map;
  import java.util.Properties;
  
  /**
   * Unit tests for {@link MetricsConfig}.
   */
  public final class MetricsConfigTest {
    private Properties mMetricsProps;
  
    /**
     * Sets up the properties for the configuration of the metrics before a test runs.
     */
    @Before
    public final void before() {
      mMetricsProps = new Properties();
      mMetricsProps.setProperty("sink.console.class", "alluxio.metrics.sink.ConsoleSink");
      mMetricsProps.setProperty("sink.console.period", "15");
      mMetricsProps.setProperty("*.sink.console.unit", "minutes");
      mMetricsProps.setProperty("sink.jmx.class", "alluxio.metrics.sink.JmxSink");
    }
  
    /**
     * Tests that the {@link MetricsConfig#MetricsConfig(Properties)} constructor sets the properties
     * correctly.
     */
    @Test
    public void setProperties() {
      MetricsConfig config = new MetricsConfig(mMetricsProps);
  
      Properties masterProp = config.getProperties();
      assertEquals(4, masterProp.size());
      assertEquals("alluxio.metrics.sink.ConsoleSink",
          masterProp.getProperty("sink.console.class"));
      assertEquals("15", masterProp.getProperty("sink.console.period"));
      assertEquals("minutes", masterProp.getProperty("sink.console.unit"));
      assertEquals("alluxio.metrics.sink.JmxSink", masterProp.getProperty("sink.jmx.class"));
    }
  
    /**
     * Tests the {@link MetricsConfig#subProperties(Properties, String)} method.
     */
    @Test
    public void subProperties() {
      MetricsConfig config = new MetricsConfig(mMetricsProps);
  
      Properties properties = config.getProperties();
  
      Map<String, Properties> sinkProps =
          MetricsConfig.subProperties(properties, MetricsSystem.SINK_REGEX);
      assertEquals(2, sinkProps.size());
      assertTrue(sinkProps.containsKey("console"));
      assertTrue(sinkProps.containsKey("jmx"));
  
      Properties consoleProp = sinkProps.get("console");
      assertEquals(3, consoleProp.size());
      assertEquals("alluxio.metrics.sink.ConsoleSink", consoleProp.getProperty("class"));
  
      Properties jmxProp = sinkProps.get("jmx");
      assertEquals(1, jmxProp.size());
      assertEquals("alluxio.metrics.sink.JmxSink", jmxProp.getProperty("class"));
    }
  }
  