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https://issues.apache.org/jira/browse/SUREFIRE-1659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16863398#comment-16863398
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René Kraneis commented on SUREFIRE-1659:
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We had similar problems when just logging in unit tests. Changing the console
appender configuration to ``follow=true`` resolved the problem for us.
Explicitly setting ``direct=false`` did not do the trick. Unfortunately none of
these flags have an associated default value at
https://logging.apache.org/log4j/2.x/manual/appenders.html.
> Log4j logger in TestExecutionListener corrupts Surefire's STDOUT.
> -----------------------------------------------------------------
>
> Key: SUREFIRE-1659
> URL: https://issues.apache.org/jira/browse/SUREFIRE-1659
> Project: Maven Surefire
> Issue Type: Bug
> Affects Versions: 3.0.0-M3
> Reporter: Stig Rohde Døssing
> Priority: Major
> Attachments: surefire-stdout-corrupt.zip
>
>
> I have a project that registers a JUnit 5 TestExecutionListener. The
> TestExecutionListener contains an SLF4j Logger, using Log4j2 as the
> underlying library. There is a log4j2.xml on the classpath, logging to
> console, and Surefire is set up to redirect output.
> Running the tests gives the following result.
> {quote}
> [WARNING] Corrupted STDOUT by directly writing to native stream in forked JVM
> 1. See FAQ web page and the dump file ...
> {quote}
> I've attached a minimal reproduction.
> Doing either of the following eliminates the error:
> * Not having the log4j2.xml on the classpath
> * Not having the Logger in the TestExecutionListener
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