[ 
https://issues.apache.org/jira/browse/CAMEL-23247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18068328#comment-18068328
 ] 

Aurélien Pupier commented on CAMEL-23247:
-----------------------------------------

full stacktrace:
{noformat}
jakarta.mail.MessagingException: No inputstream from datasource;  nested 
exception is:  java.lang.IllegalStateException: Folder is not Open     at 
jakarta.mail.internet.MimeMultipart.parse(MimeMultipart.java:586)    at 
jakarta.mail.internet.MimeMultipart.getCount(MimeMultipart.java:323) at 
org.apache.camel.component.mail.MailConverters.toString(MailConverters.java:84) 
     at 
org.apache.camel.component.mail.MailConvertersLoader.lambda$3(MailConvertersLoader.java:74)
  at 
org.apache.camel.support.SimpleTypeConverter.convertTo(SimpleTypeConverter.java:101)
 at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.tryCachedConverters(CoreTypeConverterRegistry.java:432)
    at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.doConvertTo(CoreTypeConverterRegistry.java:389)
    at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.doConvertToAndStat(CoreTypeConverterRegistry.java:284)
     at 
org.apache.camel.impl.converter.CoreTypeConverterRegistry.convertTo(CoreTypeConverterRegistry.java:168)
      at 
org.apache.camel.support.MessageSupport.getBody(MessageSupport.java:101)     at 
org.apache.camel.support.MessageSupport.getBody(MessageSupport.java:77)      at 
org.apache.camel.component.mail.MailContentTypeResolverTest.testCustomContentTypeResolver(MailContentTypeResolverTest.java:90)
       at jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) 
at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
     at java.base/java.lang.reflect.Method.invoke(Method.java:569)   at 
org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:701)
       at 
org.junit.platform.commons.support.ReflectionSupport.invokeMethod(ReflectionSupport.java:502)
        at 
org.junit.jupiter.engine.support.MethodReflectionUtils.invoke(MethodReflectionUtils.java:45)
 at 
org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:61)
        at 
org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:124)
      at 
org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:163)
     at 
org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:148)
       at 
org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestTemplateMethod(TimeoutExtension.java:94)
    at 
org.junit.jupiter.engine.execution.InterceptingExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(InterceptingExecutableInvoker.java:123)
     at 
org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.lambda$invoke$0(InterceptingExecutableInvoker.java:105)
     at 
org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:99)
      at 
org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:66)
    at 
org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:47)
     at 
org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:39)
     at 
org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:104)
      at 
org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:98)
       at 
org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invokeVoid(InterceptingExecutableInvoker.java:71)
   at 
org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$0(TestMethodTestDescriptor.java:219)
    at 
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:74)
        at 
org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:215)
     at 
org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:157)
      at 
org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:70)
       at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$2(NodeTestTask.java:176)
       at 
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:74)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$1(NodeTestTask.java:166)
       at 
org.junit.platform.engine.support.hierarchical.Node.around(Node.java:138)    at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$0(NodeTestTask.java:164)
       at 
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:74)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:163)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:116)
   at 
org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:36)
   at 
org.junit.platform.engine.support.hierarchical.NodeTestTask$DefaultDynamicTestExecutor.execute(NodeTestTask.java:268)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask$DefaultDynamicTestExecutor.execute(NodeTestTask.java:246)
        at 
org.junit.jupiter.engine.descriptor.TemplateExecutor.execute(TemplateExecutor.java:96)
       at 
org.junit.jupiter.engine.descriptor.TemplateExecutor.lambda$executeForProvider$1(TemplateExecutor.java:59)
   at java.base/java.util.Optional.ifPresent(Optional.java:178)    at 
org.junit.jupiter.engine.descriptor.TemplateExecutor.lambda$executeForProvider$0(TemplateExecutor.java:59)
   at 
java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
    at 
java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
  at java.base/java.util.stream.IntPipeline$1$1.accept(IntPipeline.java:180)    
  at 
java.base/java.util.stream.Streams$RangeIntSpliterator.forEachRemaining(Streams.java:104)
    at 
java.base/java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:711) at 
java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) 
     at 
java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
       at 
java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
      at 
java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
        at 
java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) 
     at 
java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
     at 
org.junit.jupiter.engine.descriptor.TemplateExecutor.executeForProvider(TemplateExecutor.java:57)
    at 
org.junit.jupiter.engine.descriptor.TemplateExecutor.execute(TemplateExecutor.java:46)
       at 
org.junit.jupiter.engine.descriptor.TestTemplateTestDescriptor.execute(TestTemplateTestDescriptor.java:112)
  at 
org.junit.jupiter.engine.descriptor.TestTemplateTestDescriptor.execute(TestTemplateTestDescriptor.java:40)
   at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$2(NodeTestTask.java:176)
       at 
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:74)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$1(NodeTestTask.java:166)
       at 
org.junit.platform.engine.support.hierarchical.Node.around(Node.java:138)    at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$0(NodeTestTask.java:164)
       at 
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:74)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:163)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:116)
   at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)   at 
org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:42)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$2(NodeTestTask.java:180)
       at 
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:74)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$1(NodeTestTask.java:166)
       at 
org.junit.platform.engine.support.hierarchical.Node.around(Node.java:138)    at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$0(NodeTestTask.java:164)
       at 
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:74)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:163)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:116)
   at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)   at 
org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:42)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$2(NodeTestTask.java:180)
       at 
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:74)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$1(NodeTestTask.java:166)
       at 
org.junit.platform.engine.support.hierarchical.Node.around(Node.java:138)    at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$0(NodeTestTask.java:164)
       at 
org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:74)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:163)
        at 
org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:116)
   at 
org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:36)
   at 
org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:52)
    at 
org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:58)
        at 
org.junit.platform.launcher.core.EngineExecutionOrchestrator.executeEngine(EngineExecutionOrchestrator.java:246)
     at 
org.junit.platform.launcher.core.EngineExecutionOrchestrator.failOrExecuteEngine(EngineExecutionOrchestrator.java:218)
       at 
org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:179)
   at 
org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108)
   at 
org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:66)
   at 
org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:157)
    at 
org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:65)
    at 
org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:125)
   at 
org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)
   at 
org.junit.platform.launcher.core.DelegatingLauncher.execute(DelegatingLauncher.java:58)
      at 
org.junit.platform.launcher.core.InterceptingLauncher.lambda$execute$2(InterceptingLauncher.java:57)
 at 
org.junit.platform.launcher.core.ClasspathAlignmentCheckingLauncherInterceptor.intercept(ClasspathAlignmentCheckingLauncherInterceptor.java:25)
      at 
org.junit.platform.launcher.core.InterceptingLauncher.execute(InterceptingLauncher.java:56)
  at 
org.junit.platform.launcher.core.DelegatingLauncher.execute(DelegatingLauncher.java:58)
      at 
org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:81)
        at 
org.eclipse.jdt.internal.junit6.runner.JUnit6TestReference.run(JUnit6TestReference.java:105)
 at 
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:40)  
     at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:520)
   at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:748)
   at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:443)
        at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:211)Caused
 by: java.lang.IllegalStateException: Folder is not Open at 
org.eclipse.angus.mail.pop3.POP3Folder.checkOpen(POP3Folder.java:572)        at 
org.eclipse.angus.mail.pop3.POP3Folder.getProtocol(POP3Folder.java:602)      at 
org.eclipse.angus.mail.pop3.POP3Message.getRawStream(POP3Message.java:167)   at 
org.eclipse.angus.mail.pop3.POP3Message.getContentStream(POP3Message.java:263)  
     at 
jakarta.mail.internet.MimePartDataSource.getInputStream(MimePartDataSource.java:83)
  at jakarta.mail.internet.MimeMultipart.parse(MimeMultipart.java:580)    ... 
118 more {noformat}

> Test MailContentTypeResolverTest.testCustomContentTypeResolver is regularly 
> failing
> -----------------------------------------------------------------------------------
>
>                 Key: CAMEL-23247
>                 URL: https://issues.apache.org/jira/browse/CAMEL-23247
>             Project: Camel
>          Issue Type: Test
>          Components: camel-mail
>    Affects Versions: 4.19.0
>            Reporter: Aurélien Pupier
>            Priority: Major
>
> it failed 2 times out of last 7 runs on CI
> {noformat}
> org.opentest4j.AssertionFailedError: expected: <Hello World> but was: 
> <jakarta.mail.internet.MimeMultipart@26c2f767>
>       at 
> org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:158)
>       at 
> org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:139)
>       at 
> org.junit.jupiter.api.AssertEquals.failNotEqual(AssertEquals.java:201)
>       at 
> org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:184)
>       at 
> org.junit.jupiter.api.AssertEquals.assertEquals(AssertEquals.java:179)
>       at org.junit.jupiter.api.Assertions.assertEquals(Assertions.java:1188)
>       at 
> org.apache.camel.component.mail.MailContentTypeResolverTest.testCustomContentTypeResolver(MailContentTypeResolverTest.java:72)
>  {noformat}
>  



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