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 org.apache.calcite.avatica.metrics.dropwizard;
  
  import org.apache.calcite.avatica.metrics.Gauge;
  
  import org.junit.Test;
  
  import java.util.concurrent.atomic.AtomicLong;
  
  import static org.junit.Assert.assertEquals;
  
  /**
   * Test class for {@link DropwizardGauge}.
   */
  public class DropwizardGaugeTest {
  
    @Test public void test() {
      SimpleGauge gauge = new SimpleGauge();
      DropwizardGauge<Long> dwGauge = new DropwizardGauge<>(gauge);
  
      assertEquals(gauge.getValue(), dwGauge.getValue());
  
      gauge.setValue(1000L);
  
      assertEquals(gauge.getValue(), dwGauge.getValue());
    }
  
    /**
     * Gauge implementation with a setter.
     */
    private static class SimpleGauge implements Gauge<Long> {
  
      private final AtomicLong value = new AtomicLong(0L);
  
      @Override public Long getValue() {
        return this.value.get();
      }
  
      public void setValue(long value) {
        this.value.set(value);
      }
    }
  }
  
  // End DropwizardGaugeTest.java
  