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.master;
019
020import static org.junit.Assert.assertSame;
021import static org.junit.Assert.assertTrue;
022
023import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
024import org.apache.hadoop.hbase.HBaseClassTestRule;
025import org.apache.hadoop.hbase.testclassification.MetricsTests;
026import org.apache.hadoop.hbase.testclassification.SmallTests;
027import org.junit.ClassRule;
028import org.junit.Test;
029import org.junit.experimental.categories.Category;
030
031/**
032 * Test for MetricsMasterSourceImpl
033 */
034@Category({ MetricsTests.class, SmallTests.class })
035public class TestMetricsMasterSourceImpl {
036  @ClassRule
037  public static final HBaseClassTestRule CLASS_RULE =
038    HBaseClassTestRule.forClass(TestMetricsMasterSourceImpl.class);
039
040  @Test
041  public void testGetInstance() {
042    MetricsMasterSourceFactory metricsMasterSourceFactory =
043      CompatibilitySingletonFactory.getInstance(MetricsMasterSourceFactory.class);
044    MetricsMasterSource masterSource = metricsMasterSourceFactory.create(null);
045    assertTrue(masterSource instanceof MetricsMasterSourceImpl);
046    assertSame(metricsMasterSourceFactory,
047      CompatibilitySingletonFactory.getInstance(MetricsMasterSourceFactory.class));
048  }
049}