/*
 * 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.hbase.quotas;

import static org.junit.Assert.assertEquals;

import org.apache.hadoop.hbase.HBaseClassTestRule;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.ClassRule;
import org.junit.Test;
import org.junit.experimental.categories.Category;

@Category({ SmallTests.class })
public class TestRegionSizeImpl {
  @ClassRule
  public static final HBaseClassTestRule CLASS_RULE =
    HBaseClassTestRule.forClass(TestRegionSizeImpl.class);

  @Test
  public void testReportingWithSizeChanges() {
    long currentSize = 1024L;
    RegionSizeImpl size = new RegionSizeImpl(currentSize);

    assertEquals(currentSize, size.getSize());

    currentSize *= 2L;
    size.setSize(currentSize);
    assertEquals(currentSize, size.getSize());

    long delta = 512L;
    currentSize += delta;
    size.incrementSize(delta);
    assertEquals(currentSize, size.getSize());
  }
}
