001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.regionserver;
019
020import static org.junit.jupiter.api.Assertions.assertEquals;
021import static org.junit.jupiter.api.Assertions.assertNotEquals;
022import static org.junit.jupiter.api.Assertions.assertThrows;
023import static org.junit.jupiter.api.Assertions.assertTrue;
024
025import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
026import org.apache.hadoop.hbase.testclassification.MetricsTests;
027import org.apache.hadoop.hbase.testclassification.SmallTests;
028import org.junit.jupiter.api.Tag;
029import org.junit.jupiter.api.Test;
030
031@Tag(MetricsTests.TAG)
032@Tag(SmallTests.TAG)
033public class TestMetricsUserSourceImpl {
034
035  @SuppressWarnings("SelfComparison")
036  @Test
037  public void testCompareToHashCodeEquals() throws Exception {
038    MetricsRegionServerSourceFactory fact =
039      CompatibilitySingletonFactory.getInstance(MetricsRegionServerSourceFactory.class);
040
041    MetricsUserSource one = fact.createUser("ONE");
042    MetricsUserSource oneClone = fact.createUser("ONE");
043    MetricsUserSource two = fact.createUser("TWO");
044
045    assertEquals(0, one.compareTo(oneClone));
046    assertEquals(one.hashCode(), oneClone.hashCode());
047    assertNotEquals(one, two);
048
049    assertTrue(one.compareTo(two) != 0);
050    assertTrue(two.compareTo(one) != 0);
051    assertTrue(two.compareTo(one) != one.compareTo(two));
052    assertTrue(two.compareTo(two) == 0);
053  }
054
055  @Test
056  public void testNoGetRegionServerMetricsSourceImpl() throws Exception {
057    // This should throw an exception because MetricsUserSourceImpl should only
058    // be created by a factory.
059    assertThrows(RuntimeException.class, () -> {
060      CompatibilitySingletonFactory.getInstance(MetricsUserSource.class);
061    });
062  }
063
064  @Test
065  public void testGetUser() {
066    MetricsRegionServerSourceFactory fact =
067      CompatibilitySingletonFactory.getInstance(MetricsRegionServerSourceFactory.class);
068
069    MetricsUserSource one = fact.createUser("ONE");
070    assertEquals("ONE", one.getUser());
071  }
072
073}