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@Category({ MetricsTests.class, SmallTests.class })
033public class TestMetricsUserSourceImpl {
034
035  @ClassRule
036  public static final HBaseClassTestRule CLASS_RULE =
037    HBaseClassTestRule.forClass(TestMetricsUserSourceImpl.class);
038
039  @SuppressWarnings("SelfComparison")
040  @Test
041  public void testCompareToHashCodeEquals() throws Exception {
042    MetricsRegionServerSourceFactory fact =
043      CompatibilitySingletonFactory.getInstance(MetricsRegionServerSourceFactory.class);
044
045    MetricsUserSource one = fact.createUser("ONE");
046    MetricsUserSource oneClone = fact.createUser("ONE");
047    MetricsUserSource two = fact.createUser("TWO");
048
049    assertEquals(0, one.compareTo(oneClone));
050    assertEquals(one.hashCode(), oneClone.hashCode());
051    assertNotEquals(one, two);
052
053    assertTrue(one.compareTo(two) != 0);
054    assertTrue(two.compareTo(one) != 0);
055    assertTrue(two.compareTo(one) != one.compareTo(two));
056    assertTrue(two.compareTo(two) == 0);
057  }
058
059  @Test(expected = RuntimeException.class)
060  public void testNoGetRegionServerMetricsSourceImpl() throws Exception {
061    // This should throw an exception because MetricsUserSourceImpl should only
062    // be created by a factory.
063    CompatibilitySingletonFactory.getInstance(MetricsUserSource.class);
064  }
065
066  @Test
067  public void testGetUser() {
068    MetricsRegionServerSourceFactory fact =
069      CompatibilitySingletonFactory.getInstance(MetricsRegionServerSourceFactory.class);
070
071    MetricsUserSource one = fact.createUser("ONE");
072    assertEquals("ONE", one.getUser());
073  }
074
075}