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/**
032 * Test for MetricsTableSourceImpl
033 */
034@Tag(MetricsTests.TAG)
035@Tag(SmallTests.TAG)
036public class TestMetricsTableSourceImpl {
037
038  @SuppressWarnings("SelfComparison")
039  @Test
040  public void testCompareToHashCode() throws Exception {
041    MetricsRegionServerSourceFactory metricsFact =
042      CompatibilitySingletonFactory.getInstance(MetricsRegionServerSourceFactory.class);
043
044    MetricsTableSource one =
045      metricsFact.createTable("ONETABLE", new MetricsTableWrapperStub("ONETABLE"));
046    MetricsTableSource oneClone =
047      metricsFact.createTable("ONETABLE", new MetricsTableWrapperStub("ONETABLE"));
048    MetricsTableSource two =
049      metricsFact.createTable("TWOTABLE", new MetricsTableWrapperStub("TWOTABLE"));
050
051    assertEquals(0, one.compareTo(oneClone));
052    assertEquals(one.hashCode(), oneClone.hashCode());
053    assertNotEquals(one, two);
054
055    assertTrue(one.compareTo(two) != 0);
056    assertTrue(two.compareTo(one) != 0);
057    assertTrue(two.compareTo(one) != one.compareTo(two));
058    assertTrue(two.compareTo(two) == 0);
059  }
060
061  @Test
062  public void testNoGetTableMetricsSourceImpl() {
063    // This should throw an exception because MetricsTableSourceImpl should only
064    // be created by a factory.
065    assertThrows(RuntimeException.class, () -> {
066      CompatibilitySingletonFactory.getInstance(MetricsTableSourceImpl.class);
067    });
068  }
069
070  @Test
071  public void testGetTableMetrics() {
072    MetricsTableSource oneTbl =
073      CompatibilitySingletonFactory.getInstance(MetricsRegionServerSourceFactory.class)
074        .createTable("ONETABLE", new MetricsTableWrapperStub("ONETABLE"));
075    assertEquals("ONETABLE", oneTbl.getTableName());
076  }
077}