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1   /*
2    *
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *     http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing, software
14   * distributed under the License is distributed on an "AS IS" BASIS,
15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16   * See the License for the specific language governing permissions and
17   * limitations under the License.
18   */
19  package org.apache.hadoop.hbase.util;
20  
21  import org.apache.hadoop.hbase.MediumTests;
22  import org.apache.hadoop.hbase.SmallTests;
23  import org.junit.Test;
24  import org.junit.experimental.categories.Category;
25  
26  import static junit.framework.Assert.assertEquals;
27  
28  /**
29   * Tests that the incrementing environment edge increments time instead of using
30   * the default.
31   */
32  @Category(SmallTests.class)
33  public class TestIncrementingEnvironmentEdge {
34  
35    @Test
36    public void testGetCurrentTimeUsesSystemClock() {
37      IncrementingEnvironmentEdge edge = new IncrementingEnvironmentEdge(1);
38      assertEquals(1, edge.currentTimeMillis());
39      assertEquals(2, edge.currentTimeMillis());
40      assertEquals(3, edge.currentTimeMillis());
41      assertEquals(4, edge.currentTimeMillis());
42    }
43  
44  }
45