Aurélien Pupier created CAMEL-24597:
---------------------------------------

             Summary: Fix flaky test 
MailAttachmentDuplicateNamesTest.testSendAndReceiveMailWithAttachmentsWithDuplicateNames
 <Hello World> but was: <jakarta.mail.internet.MimeMultipart@XXXXX>
                 Key: CAMEL-24597
                 URL: https://issues.apache.org/jira/browse/CAMEL-24597
             Project: Camel
          Issue Type: Test
          Components: camel-mail
    Affects Versions: 4.23.0
            Reporter: Aurélien Pupier


it has failed 4 times 3 times in a row in 90 days (reported as test erro rin 
jenkins build then)
It was flaky 46 other times

errors are either:

{noformat}
org.opentest4j.AssertionFailedError: expected: <Hello World> but was: 
<jakarta.mail.internet.MimeMultipart@42383cb0>    
        at org.junit.jupiter.api.Assertions.assertEquals(Assertions.java:1199)  
        at 
org.apache.camel.component.mail.MailAttachmentDuplicateNamesTest.testSendAndReceiveMailWithAttachmentsWithDuplicateNames(MailAttachmentDuplicateNamesTest.java:78)
   
{noformat}

or 

{noformat}
org.apache.camel.TypeConversionException: Error during type conversion from 
type: jakarta.mail.internet.MimeMultipart to the required type: 
java.lang.String due to jakarta.mail.MessagingException: No inputstream from 
datasource     
        at 
org.apache.camel.support.SimpleTypeConverter.convertTo(SimpleTypeConverter.java:105)
 
        at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.tryCachedConverters(CoreTypeConverterRegistry.java:433)
    
        at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.doConvertTo(CoreTypeConverterRegistry.java:390)
    
        at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.doConvertToAndStat(CoreTypeConverterRegistry.java:285)
     
        at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.convertTo(CoreTypeConverterRegistry.java:169)
      
        at 
org.apache.camel.support.MessageSupport.getBody(MessageSupport.java:101)     
        at 
org.apache.camel.support.MessageSupport.getBody(MessageSupport.java:77)      
        at 
org.apache.camel.component.mail.MailAttachmentDuplicateNamesTest.testSendAndReceiveMailWithAttachmentsWithDuplicateNames(MailAttachmentDuplicateNamesTest.java:78)
   
Caused by: jakarta.mail.MessagingException: No inputstream from datasource      
        at jakarta.mail.internet.MimeMultipart.parse(MimeMultipart.java:586)    
                •••
        at 
org.apache.camel.component.mail.MailConverters.toString(MailConverters.java:84) 
     
        at 
org.apache.camel.component.mail.MailConvertersLoader.lambda$registerConverters$3(MailConvertersLoader.java:74)
       
        at 
org.apache.camel.support.SimpleTypeConverter.convertTo(SimpleTypeConverter.java:101)
 
        at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.tryCachedConverters(CoreTypeConverterRegistry.java:433)
    
        at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.doConvertTo(CoreTypeConverterRegistry.java:390)
    
        at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.doConvertToAndStat(CoreTypeConverterRegistry.java:285)
     
        at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.convertTo(CoreTypeConverterRegistry.java:169)
      
        at 
org.apache.camel.support.MessageSupport.getBody(MessageSupport.java:101)     
        at 
org.apache.camel.support.MessageSupport.getBody(MessageSupport.java:77)      
        at 
org.apache.camel.component.mail.MailAttachmentDuplicateNamesTest.testSendAndReceiveMailWithAttachmentsWithDuplicateNames(MailAttachmentDuplicateNamesTest.java:78)
   
Caused by: java.io.IOException: error fetching POP3 content     
        at 
jakarta.mail.internet.MimePartDataSource.getInputStream(MimePartDataSource.java:97)
  
                •••
        at 
org.apache.camel.component.mail.MailConverters.toString(MailConverters.java:84) 
     
        at 
org.apache.camel.component.mail.MailConvertersLoader.lambda$registerConverters$3(MailConvertersLoader.java:74)
       
        at 
org.apache.camel.support.SimpleTypeConverter.convertTo(SimpleTypeConverter.java:101)
 
        at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.tryCachedConverters(CoreTypeConverterRegistry.java:433)
    
        at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.doConvertTo(CoreTypeConverterRegistry.java:390)
    
        at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.doConvertToAndStat(CoreTypeConverterRegistry.java:285)
     
        at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.convertTo(CoreTypeConverterRegistry.java:169)
      
        at 
org.apache.camel.support.MessageSupport.getBody(MessageSupport.java:101)     
        at 
org.apache.camel.support.MessageSupport.getBody(MessageSupport.java:77)      
        at 
org.apache.camel.component.mail.MailAttachmentDuplicateNamesTest.testSendAndReceiveMailWithAttachmentsWithDuplicateNames(MailAttachmentDuplicateNamesTest.java:78)
   
{noformat}



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