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 junit.framework.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
031 * the default.
032 */
033@Category({MiscTests.class, SmallTests.class})
034public class TestIncrementingEnvironmentEdge {
035
036  @ClassRule
037  public static final HBaseClassTestRule CLASS_RULE =
038      HBaseClassTestRule.forClass(TestIncrementingEnvironmentEdge.class);
039
040  @Test
041  public void testGetCurrentTimeUsesSystemClock() {
042    IncrementingEnvironmentEdge edge = new IncrementingEnvironmentEdge(1);
043    assertEquals(1, edge.currentTime());
044    assertEquals(2, edge.currentTime());
045    assertEquals(3, edge.currentTime());
046    assertEquals(4, edge.currentTime());
047  }
048}