[TASK] Add unit test to cover stdWrap_if.

Releases: master
Resolves: #76763
Change-Id: If18a3eca9e3ba28a938943775ff40f16f3c9ca65
Reviewed-on: https://review.typo3.org/48659


Tested-by: Bamboo TYPO3com <info@typo3.com>
Reviewed-by: Daniel Goerz <ervaude@gmail.com>
Tested-by: Daniel Goerz <ervaude@gmail.com>
Reviewed-by: Susanne Moog <typo3@susannemoog.de>
Tested-by: Susanne Moog <typo3@susannemoog.de>