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https://issues.apache.org/jira/browse/QPIDJMS-313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16120138#comment-16120138
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Timothy Bish commented on QPIDJMS-313:
--------------------------------------

Give the initial source of the test I'd assert that the Artemis JMS client is 
probably in violation of the spec if it is throwing the exception when there is 
no body. 

> Message#getBody does not throw when attempting to read a BytesMessage as 
> String.class
> -------------------------------------------------------------------------------------
>
>                 Key: QPIDJMS-313
>                 URL: https://issues.apache.org/jira/browse/QPIDJMS-313
>             Project: Qpid JMS
>          Issue Type: Bug
>          Components: qpid-jms-client
>    Affects Versions: 0.23.0, 0.24.0
>            Reporter: Jiri Danek
>            Priority: Minor
>
> Consider the ActiveMQ Artemis test 
> {{org.apache.activemq.artemis.tests.integration.jms.jms2client.BodyTest#testBodyConversion}}
>  adapted to run through multiple JMS ConnectionFactories in turn. This test 
> passes with Core JMS client, is skipped (or should be skipped) with ActiveMQ 
> OpenWire client (that is a JMS 1.1 client) and fails with qpid-jms client.
> {noformat}
>          BytesMessage bytesMessage = sess.createBytesMessage();
>          producer.send(bytesMessage);
>          Message msg = cons.receiveNoWait();
>          assertNotNull(msg);
>          try {
>             msg.getBody(String.class);
>             fail("Exception expected");
>          } catch (MessageFormatException e) {
>          }
> {noformat}
> The failing line is the {{fail("Exception expected");}}, because qpid-jms 
> does not throw {{MessageFormatException}} where it is supposed to.
> According to https://docs.oracle.com/javaee/7/api/javax/jms/Message.html. "If 
> the message is a BytesMessage then this parameter must be set to byte[].class 
> (or java.lang.Object.class). This method will reset the BytesMessage before 
> and after use." ... "Throws: MessageFormatException" ... "if the message body 
> cannot be assigned to the specified type."



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