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.util;
019
020import static org.junit.Assert.assertEquals;
021
022import org.apache.hadoop.hbase.HBaseClassTestRule;
023import org.apache.hadoop.hbase.testclassification.MiscTests;
024import org.apache.hadoop.hbase.testclassification.SmallTests;
025import org.junit.ClassRule;
026import org.junit.Test;
027import org.junit.experimental.categories.Category;
028
029/**
030 * Tests that the incrementing environment edge increments time instead of using the default.
031 */
032@Category({ MiscTests.class, SmallTests.class })
033public class TestIncrementingEnvironmentEdge {
034
035  @ClassRule
036  public static final HBaseClassTestRule CLASS_RULE =
037    HBaseClassTestRule.forClass(TestIncrementingEnvironmentEdge.class);
038
039  @Test
040  public void testGetCurrentTimeUsesSystemClock() {
041    IncrementingEnvironmentEdge edge = new IncrementingEnvironmentEdge(1);
042    assertEquals(1, edge.currentTime());
043    assertEquals(2, edge.currentTime());
044    assertEquals(3, edge.currentTime());
045    assertEquals(4, edge.currentTime());
046  }
047}