"purge-endpoint" fails sometimes during "after-suite" because Session is closed

Environment: the service (jdk-8) runs locally with jetty. The citrus tests (2.5.2), run with maven-failsafe-plugin. DB: Postgresql, JMS: HornetQ.

In our service tests we enqueue messages onto the IN-queue, the service does magic and produces a message on the OUT-queue. Most tests use receive-actions to validate the message. But not all messages are received, or maybe a test-build fails. That's why we like to purge the OUT-Q at the end of all tests. According to the documentation the "After Suite" would be the place to clean up JMS destinations. So we use the testcase:after-suite with action "purge-endpoint".

Sometimes messages are indeed purged (received), but other times, the logging shows an IllegalStateException: Session is closed. I suspect that connections are being closed in a parallel process which sometimes results in a failure while purging the JMS endpoint (hornetq-queue).

Can you confirm/fix this? Thanks in advance!

Kind regards,
Erik Loosman

Failure example:

```
[INFO ] 14-06-2016 12:46:22 GenericApplicationContext - Closing org.springframework.context.support.GenericApplicationContext@5ed828d: startup date [Tue Jun 14 12:45:42 CEST 2016]; root of context hierarchy
[INFO ] 14-06-2016 12:46:22 SequenceAfterSuite - Entering after suite block
[ERROR] 14-06-2016 12:46:22 SequenceAfterSuite - After suite action failed purge-endpointNested exception is:
org.springframework.jms.IllegalStateException: Session is closed; nested exception is javax.jms.IllegalStateException: Session is closed
at org.springframework.jms.support.JmsUtils.convertJmsAccessException(JmsUtils.java:279)
at org.springframework.jms.support.JmsAccessor.convertJmsAccessException(JmsAccessor.java:169)
at org.springframework.jms.core.JmsTemplate.execute(JmsTemplate.java:497)
at org.springframework.jms.core.JmsTemplate.receiveSelected(JmsTemplate.java:754)
at org.springframework.jms.core.JmsTemplate.receive(JmsTemplate.java:733)
at org.springframework.jms.core.JmsTemplate.receive(JmsTemplate.java:724)
at com.consol.citrus.jms.endpoint.JmsConsumer.receive(JmsConsumer.java:67)
at com.consol.citrus.messaging.AbstractSelectiveMessageConsumer.receive(AbstractSelectiveMessageConsumer.java:50)
at com.consol.citrus.actions.PurgeEndpointAction.purgeEndpoint(PurgeEndpointAction.java:114)
at com.consol.citrus.actions.PurgeEndpointAction.doExecute(PurgeEndpointAction.java:83)
at com.consol.citrus.actions.AbstractTestAction.execute(AbstractTestAction.java:42)
at com.consol.citrus.container.SequenceAfterSuite.doExecute(SequenceAfterSuite.java:58)
at com.consol.citrus.actions.AbstractTestAction.execute(AbstractTestAction.java:42)
at com.consol.citrus.junit.TestSuiteExecutionListener$AfterSuiteShutdownHook.run(TestSuiteExecutionListener.java:102)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.jms.IllegalStateException: Session is closed
at org.hornetq.jms.client.HornetQSession.checkClosed(HornetQSession.java:1216)
at org.hornetq.jms.client.HornetQSession.getTransacted(HornetQSession.java:194)
at sun.reflect.GeneratedMethodAccessor38.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.springframework.jms.connection.CachingConnectionFactory$CachedSessionInvocationHandler.invoke(CachingConnectionFactory.java:386)
at com.sun.proxy.$Proxy26.getTransacted(Unknown Source)
at org.springframework.jms.core.JmsTemplate.doReceive(JmsTemplate.java:804)
at org.springframework.jms.core.JmsTemplate.doReceive(JmsTemplate.java:784)
at org.springframework.jms.core.JmsTemplate$9.doInJms(JmsTemplate.java:757)
at org.springframework.jms.core.JmsTemplate$9.doInJms(JmsTemplate.java:754)
at org.springframework.jms.core.JmsTemplate.execute(JmsTemplate.java:494)
... 12 more
[ERROR] 14-06-2016 12:46:22 SequenceAfterSuite - Continue after suite actions
[INFO ] 14-06-2016 12:46:22 Citrus -
[INFO ] 14-06-2016 12:46:22 Citrus - AFTER TEST SUITE: FAILED
```

Success example

```
[INFO ] 14-06-2016 12:49:29 SequenceAfterSuite - Entering after suite block
[INFO ] 14-06-2016 12:49:29 GenericApplicationContext - Closing org.springframework.context.support.GenericApplicationContext@44c8afef: startup date [Tue Jun 14 12:49:16 CEST 2016]; root of context hierarchy
[INFO ] 14-06-2016 12:49:29 JmsConsumer - Received JMS message on destination: 'OUT_Q'
[INFO ] 14-06-2016 12:49:29 CachingConnectionFactory - Established shared JMS Connection: org.hornetq.jms.client.HornetQConnection@4faf1215
[INFO ] 14-06-2016 12:49:29 JmsConsumer - Received JMS message on destination: 'OUT_Q'
[INFO ] 14-06-2016 12:49:30 PurgeEndpointAction - Purged message endpoints
[INFO ] 14-06-2016 12:49:30 Citrus -
[INFO ] 14-06-2016 12:49:30 Citrus - AFTER TEST SUITE: SUCCESS
```