[Wikitech-l] Dropping PHPUnit 4 support

Hello all, Following our migration away from HHVM, we're now also requiring PHPUnit 6+ [0]. Previously, we were allowing PHPUnit 4 as an option, but that version was EOLed in February 2017 [1]. MediaWiki core provides a backward/forward-compatible layer [2] to allow working with both versions. However, that trait will be emptied and removed soon, partly because we want to move to PHPUnit 8. Hence, if you have a local install of PHPUnit 4, you won't be able to use it anymore. I also invite you to check whether any of your repos has an explicit PHPUnit dependency in composer.json [3]. If it does, you can now remove PHPUnit 4 from it. Thank you for your collaboration! [0] - https://gerrit.wikimedia.org/r/#/c/mediawiki/core/+/426058/ [1] - https://phpunit.de/supported-versions.html [2] - https://gerrit.wikimedia.org/g/mediawiki/core/+/e26299b1d14feb341ff5752696f… [3] - List of repos that do have it: https://codesearch.wmflabs.org/search/?q=%22phpunit%5C%2Fphpunit%22%3A&… -- https://meta.wikimedia.org/wiki/User:Daimona_Eaytoy "Daimona" is not my real name -- he/him