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
|
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.server.queue;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
import junit.framework.JUnit4TestAdapter;
public class SubscriptionManagerTest
{
private final SubscriptionSet mgr = new SubscriptionSet();
@Test
public void basicSubscriptionManagement()
{
assertTrue(mgr.isEmpty());
assertFalse(mgr.hasActiveSubscribers());
TestSubscription s1 = new TestSubscription("S1");
mgr.addSubscriber(s1);
assertFalse(mgr.isEmpty());
assertTrue(mgr.hasActiveSubscribers());
TestSubscription s2 = new TestSubscription("S2");
mgr.addSubscriber(s2);
s2.setSuspended(true);
assertFalse(mgr.isEmpty());
assertTrue(mgr.hasActiveSubscribers());
assertTrue(s2.isSuspended());
assertFalse(s1.isSuspended());
s1.setSuspended(true);
assertFalse(mgr.hasActiveSubscribers());
mgr.removeSubscriber(new TestSubscription("S1"));
assertFalse(mgr.isEmpty());
mgr.removeSubscriber(new TestSubscription("S2"));
assertTrue(mgr.isEmpty());
}
@Test
public void roundRobin()
{
TestSubscription a = new TestSubscription("A");
TestSubscription b = new TestSubscription("B");
TestSubscription c = new TestSubscription("C");
TestSubscription d = new TestSubscription("D");
mgr.addSubscriber(a);
mgr.addSubscriber(b);
mgr.addSubscriber(c);
mgr.addSubscriber(d);
for (int i = 0; i < 3; i++)
{
assertEquals(a, mgr.nextSubscriber(null));
assertEquals(b, mgr.nextSubscriber(null));
assertEquals(c, mgr.nextSubscriber(null));
assertEquals(d, mgr.nextSubscriber(null));
}
c.setSuspended(true);
for (int i = 0; i < 3; i++)
{
assertEquals(a, mgr.nextSubscriber(null));
assertEquals(b, mgr.nextSubscriber(null));
assertEquals(d, mgr.nextSubscriber(null));
}
mgr.removeSubscriber(a);
d.setSuspended(true);
c.setSuspended(false);
Subscription e = new TestSubscription("D");
mgr.addSubscriber(e);
for (int i = 0; i < 3; i++)
{
assertEquals(b, mgr.nextSubscriber(null));
assertEquals(c, mgr.nextSubscriber(null));
assertEquals(e, mgr.nextSubscriber(null));
}
}
public static junit.framework.Test suite()
{
return new JUnit4TestAdapter(SubscriptionManagerTest.class);
}
}
|