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.Assert.assertEquals;
021import static org.junit.Assert.assertNotEquals;
022import static org.junit.Assert.assertTrue;
023
024import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
025import org.apache.hadoop.hbase.HBaseClassTestRule;
026import org.apache.hadoop.hbase.testclassification.MetricsTests;
027import org.apache.hadoop.hbase.testclassification.SmallTests;
028import org.junit.ClassRule;
029import org.junit.Test;
030import org.junit.experimental.categories.Category;
031
032/**
033 * Test for MetricsTableSourceImpl
034 */
035@Category({ MetricsTests.class, SmallTests.class })
036public class TestMetricsTableSourceImpl {
037  @ClassRule
038  public static final HBaseClassTestRule CLASS_RULE =
039    HBaseClassTestRule.forClass(TestMetricsTableSourceImpl.class);
040
041  @SuppressWarnings("SelfComparison")
042  @Test
043  public void testCompareToHashCode() throws Exception {
044    MetricsRegionServerSourceFactory metricsFact =
045      CompatibilitySingletonFactory.getInstance(MetricsRegionServerSourceFactory.class);
046
047    MetricsTableSource one =
048      metricsFact.createTable("ONETABLE", new MetricsTableWrapperStub("ONETABLE"));
049    MetricsTableSource oneClone =
050      metricsFact.createTable("ONETABLE", new MetricsTableWrapperStub("ONETABLE"));
051    MetricsTableSource two =
052      metricsFact.createTable("TWOTABLE", new MetricsTableWrapperStub("TWOTABLE"));
053
054    assertEquals(0, one.compareTo(oneClone));
055    assertEquals(one.hashCode(), oneClone.hashCode());
056    assertNotEquals(one, two);
057
058    assertTrue(one.compareTo(two) != 0);
059    assertTrue(two.compareTo(one) != 0);
060    assertTrue(two.compareTo(one) != one.compareTo(two));
061    assertTrue(two.compareTo(two) == 0);
062  }
063
064  @Test(expected = RuntimeException.class)
065  public void testNoGetTableMetricsSourceImpl() {
066    // This should throw an exception because MetricsTableSourceImpl should only
067    // be created by a factory.
068    CompatibilitySingletonFactory.getInstance(MetricsTableSourceImpl.class);
069  }
070
071  @Test
072  public void testGetTableMetrics() {
073    MetricsTableSource oneTbl =
074      CompatibilitySingletonFactory.getInstance(MetricsRegionServerSourceFactory.class)
075        .createTable("ONETABLE", new MetricsTableWrapperStub("ONETABLE"));
076    assertEquals("ONETABLE", oneTbl.getTableName());
077  }
078
079}