NIFI-15715 Fixed CapturingLogger to ensure it captures the stack trace for the use in unit test assertions. In addition added unit tests to TransformXML to demonstrate the use of XSLT stylesheet parameters with the use of dynamic properties.

[dan-s1]

Summary

NIFI-15715
This PR addresses the following issues:

• Unit tests were added to exercise XSLT stylesheet parameter types in TransformXML, valid values and invalid values.
• The bug uncovered in the CapturingLogger when writing one of these unit tests as discussed in Slack thread .
• A logging statement in TransformXml on line 322, did not use interpolation to include the FlowFile as part of the log statement. Interpolation was added to correct that.

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  • JDK 21
  • JDK 25

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[exceptionfactory]

Thanks for correcting the CapturingLogger handling of exceptions and moving these additional tests to the new PR @dan-s1, looks good! +1 merging