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 */
018
019package org.apache.hadoop.hbase.regionserver;
020
021import static org.junit.Assert.assertEquals;
022import static org.junit.Assert.assertNotEquals;
023import static org.junit.Assert.assertTrue;
024
025import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
026import org.apache.hadoop.hbase.HBaseClassTestRule;
027import org.apache.hadoop.hbase.testclassification.MetricsTests;
028import org.apache.hadoop.hbase.testclassification.SmallTests;
029import org.junit.ClassRule;
030import org.junit.Test;
031import org.junit.experimental.categories.Category;
032
033@Category({MetricsTests.class, SmallTests.class})
034public class TestMetricsUserSourceImpl {
035
036  @ClassRule
037  public static final HBaseClassTestRule CLASS_RULE =
038      HBaseClassTestRule.forClass(TestMetricsUserSourceImpl.class);
039
040  @SuppressWarnings("SelfComparison")
041  @Test
042  public void testCompareToHashCodeEquals() throws Exception {
043    MetricsRegionServerSourceFactory fact
044      = CompatibilitySingletonFactory.getInstance(MetricsRegionServerSourceFactory.class);
045
046    MetricsUserSource one = fact.createUser("ONE");
047    MetricsUserSource oneClone = fact.createUser("ONE");
048    MetricsUserSource two = fact.createUser("TWO");
049
050    assertEquals(0, one.compareTo(oneClone));
051    assertEquals(one.hashCode(), oneClone.hashCode());
052    assertNotEquals(one, two);
053
054    assertTrue(one.compareTo(two) != 0);
055    assertTrue(two.compareTo(one) != 0);
056    assertTrue(two.compareTo(one) != one.compareTo(two));
057    assertTrue(two.compareTo(two) == 0);
058  }
059
060
061  @Test (expected = RuntimeException.class)
062  public void testNoGetRegionServerMetricsSourceImpl() throws Exception {
063    // This should throw an exception because MetricsUserSourceImpl should only
064    // be created by a factory.
065    CompatibilitySingletonFactory.getInstance(MetricsUserSource.class);
066  }
067
068  @Test
069  public void testGetUser() {
070    MetricsRegionServerSourceFactory fact
071      = CompatibilitySingletonFactory.getInstance(MetricsRegionServerSourceFactory.class);
072
073    MetricsUserSource one = fact.createUser("ONE");
074    assertEquals("ONE", one.getUser());
075  }
076
077}