1   /*
2    * Copyright 2010 The Apache Software Foundation
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  package org.apache.hadoop.hbase.util;
21  
22  import org.apache.hadoop.hbase.MediumTests;
23  import org.junit.Test;
24  import org.junit.experimental.categories.Category;
25  
26  import static org.mockito.Mockito.mock;
27  import static org.mockito.Mockito.when;
28  import static org.mockito.Mockito.verify;
29  
30  import static org.junit.Assert.assertEquals;
31  import static org.junit.Assert.assertFalse;
32  import static org.junit.Assert.assertNotNull;
33  import static org.junit.Assert.assertTrue;
34  
35  @Category(MediumTests.class)
36  public class TestEnvironmentEdgeManager {
37  
38    @Test
39    public void testManageSingleton() {
40      EnvironmentEdge edge = EnvironmentEdgeManager.getDelegate();
41      assertNotNull(edge);
42      assertTrue(edge instanceof DefaultEnvironmentEdge);
43      EnvironmentEdgeManager.reset();
44      EnvironmentEdge edge2 = EnvironmentEdgeManager.getDelegate();
45      assertFalse(edge == edge2);
46      IncrementingEnvironmentEdge newEdge = new IncrementingEnvironmentEdge();
47      EnvironmentEdgeManager.injectEdge(newEdge);
48      assertEquals(newEdge, EnvironmentEdgeManager.getDelegate());
49  
50      //injecting null will result in default being assigned.
51      EnvironmentEdgeManager.injectEdge(null);
52      EnvironmentEdge nullResult = EnvironmentEdgeManager.getDelegate();
53      assertTrue(nullResult instanceof DefaultEnvironmentEdge);
54    }
55  
56    @Test
57    public void testCurrentTimeInMillis() {
58      EnvironmentEdge mock = mock(EnvironmentEdge.class);
59      EnvironmentEdgeManager.injectEdge(mock);
60      long expectation = 3456;
61      when(mock.currentTimeMillis()).thenReturn(expectation);
62      long result = EnvironmentEdgeManager.currentTimeMillis();
63      verify(mock).currentTimeMillis();
64      assertEquals(expectation, result);
65    }
66  
67    @org.junit.Rule
68    public org.apache.hadoop.hbase.ResourceCheckerJUnitRule cu =
69      new org.apache.hadoop.hbase.ResourceCheckerJUnitRule();
70  }
71