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19 package org.apache.hadoop.hbase.master;
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21 import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
22 import org.apache.hadoop.hbase.master.MetricsMasterSource;
23 import org.apache.hadoop.hbase.master.MetricsMasterSourceFactory;
24 import org.apache.hadoop.hbase.master.MetricsMasterSourceImpl;
25 import org.apache.hadoop.hbase.testclassification.SmallTests;
26 import org.apache.hadoop.hbase.testclassification.MetricsTests;
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28 import org.junit.Test;
29 import org.junit.experimental.categories.Category;
30
31 import static org.junit.Assert.assertSame;
32 import static org.junit.Assert.assertTrue;
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37 @Category({MetricsTests.class, SmallTests.class})
38 public class TestMetricsMasterSourceImpl {
39
40 @Test
41 public void testGetInstance() throws Exception {
42 MetricsMasterSourceFactory metricsMasterSourceFactory = CompatibilitySingletonFactory
43 .getInstance(MetricsMasterSourceFactory.class);
44 MetricsMasterSource masterSource = metricsMasterSourceFactory.create(null);
45 assertTrue(masterSource instanceof MetricsMasterSourceImpl);
46 assertSame(metricsMasterSourceFactory, CompatibilitySingletonFactory.getInstance(MetricsMasterSourceFactory.class));
47 }
48
49 }