/*
 * 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.hadoop.ozone.recon.metrics;

import static org.junit.jupiter.api.Assertions.assertEquals;

import org.junit.jupiter.api.Test;

/**
 * Tests {@link OzoneManagerSyncMetrics}.
 */
public class TestOzoneManagerSyncMetrics {

  @Test
  void testDeltaFailuresIncrementIndependentCounter() {
    OzoneManagerSyncMetrics metrics = OzoneManagerSyncMetrics.create();
    try {
      metrics.incrNumSnapshotRequests();
      metrics.incrNumSnapshotRequestsFailed();
      metrics.incrNumDeltaRequestsFailed();
      metrics.incrNumUpdatesInDeltaTotal(7);
      metrics.setSequenceNumberLag(11);

      assertEquals(1, metrics.getNumSnapshotRequests());
      assertEquals(1, metrics.getNumSnapshotRequestsFailed());
      assertEquals(1, metrics.getNumDeltaRequestsFailed());
      assertEquals(7, metrics.getNumUpdatesInDeltaTotal());
      assertEquals(1, metrics.getNumNonZeroDeltaRequests());
      assertEquals(7.0f, metrics.getAverageNumUpdatesInDeltaRequest());
      assertEquals(11, metrics.getSequenceNumberLag());
    } finally {
      metrics.unRegister();
    }
  }
}
