Hey Legoktm,
This is for the Maps extension, though I will also need to deal with this elsewhere.
Failing tests: https://travis-ci.org/JeroenDeDauw/Maps/builds/375344161
Code: https://github.com/JeroenDeDauw/Maps
I'd be ideal to have the older versions of MediaWiki use PHPUnit 6.x or later, but I've not found a way to do so yet.
Cheers
-- Jeroen De Dauw | https://entropywins.wtf | https://keybase.io/jeroendedauw Software Crafter | Speaker | Student | Strategist | Contributor to Wikimedia and Open Source ~=[,,_,,]:3