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/*
*
* 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 junit.framework.TestCase;
import org.apache.qpid.server.subscription.Subscription;
public class SubscriptionManagerTest extends TestCase
{
private final SubscriptionSet mgr = new SubscriptionSet();
public void testBasicSubscriptionManagement()
{
assertTrue(mgr.isEmpty());
assertFalse(mgr.hasActiveSubscribers());
SubscriptionTestHelper s1 = new SubscriptionTestHelper("S1");
mgr.addSubscriber(s1);
assertFalse(mgr.isEmpty());
assertTrue(mgr.hasActiveSubscribers());
SubscriptionTestHelper s2 = new SubscriptionTestHelper("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(s1);
assertFalse(mgr.isEmpty());
mgr.removeSubscriber(s2);
assertTrue(mgr.isEmpty());
}
public void testRoundRobin()
{
SubscriptionTestHelper a = new SubscriptionTestHelper("A");
SubscriptionTestHelper b = new SubscriptionTestHelper("B");
SubscriptionTestHelper c = new SubscriptionTestHelper("C");
SubscriptionTestHelper d = new SubscriptionTestHelper("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 SubscriptionTestHelper("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 junit.framework.TestSuite(SubscriptionManagerTest.class);
}
}
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