-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
MarshlandPoolTest.java
124 lines (103 loc) · 3.8 KB
/
MarshlandPoolTest.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
/*
* Copyright (c) 2002-2017 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.collection.pool;
import org.junit.Test;
import java.util.concurrent.TimeUnit;
import static org.junit.Assert.fail;
import static org.mockito.Matchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;
public class MarshlandPoolTest
{
@Test
public void shouldNotLooseObjectsWhenThreadsDie() throws Exception
{
// Given
Pool<Object> delegatePool = mock( Pool.class );
when( delegatePool.acquire() ).thenReturn( 1337, -1 );
final MarshlandPool<Object> pool = new MarshlandPool<>( delegatePool );
// When
claimAndReleaseInSeparateThread( pool );
// Then
verify( delegatePool ).acquire();
verifyNoMoreInteractions( delegatePool );
assertPoolEventuallyReturns( pool, 1337 );
}
@Test
public void shouldReturnToDelegatePoolIfLocalPoolIsFull() throws Exception
{
// Given
Pool<Object> delegatePool = mock( Pool.class );
when(delegatePool.acquire()).thenReturn( 1337 );
final MarshlandPool<Object> pool = new MarshlandPool<>( delegatePool );
Object first = pool.acquire();
Object second = pool.acquire();
Object third = pool.acquire();
// When
pool.release( first );
pool.release( second );
pool.release( third );
// Then
verify( delegatePool, times( 3 ) ).acquire();
verify( delegatePool, times( 2 ) ).release( any() );
verifyNoMoreInteractions( delegatePool );
}
@Test
public void shouldReleaseAllSlotsOnClose() throws Exception
{
// Given
Pool<Object> delegatePool = mock( Pool.class );
when( delegatePool.acquire() ).thenReturn( 1337 );
final MarshlandPool<Object> pool = new MarshlandPool<>( delegatePool );
Object first = pool.acquire();
pool.release( first );
// When
pool.close();
// Then
verify( delegatePool, times( 1 ) ).acquire();
verify( delegatePool, times( 1 ) ).release( any() );
verifyNoMoreInteractions( delegatePool );
}
private void assertPoolEventuallyReturns( Pool<Object> pool, int expected ) throws InterruptedException
{
long maxTime = System.currentTimeMillis() + TimeUnit.SECONDS.toMillis( 10 );
while ( System.currentTimeMillis() < maxTime )
{
if ( pool.acquire().equals( expected ) )
{
return;
}
}
fail( "Waited 10 seconds for pool to return object from dead thread, but it was never returned." );
}
private void claimAndReleaseInSeparateThread( final MarshlandPool<Object> pool ) throws InterruptedException
{
Thread thread = new Thread( () ->
{
Object obj = pool.acquire();
pool.release( obj );
} );
thread.start();
thread.join();
}
}