[TASK] Write unit tests for stdWrapValue()

Write unit tests for ContentObjectRenderer->stdWrapValue()

Resolves: #70130
Releases: master
Change-Id: Idd9abae877d456ec6ed42b5da058dc551aedbb77
Reviewed-on: http://review.typo3.org/43589


Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Tested-by: Tymoteusz Motylewski <t.motylewski@gmail.com>