[TASK] Add unit tests for stdWrap_bytes()

Resolves: #71770
Releases: master
Change-Id: I5e7f6e8577100ce083517de28986f8cb2e8b8410
Reviewed-on: https://review.typo3.org/44890


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>