If possible, add test for Features

Locally I work with ddev and test JS stuff with

https://github.com/ddev/ddev-selenium-standalone-chrome

and then

ddev exec -d /var/www/html/web "../vendor/bin/phpunit -v -c ./core/phpunit.xml.dist ./modules/contrib/geolocation/modules/geolocation_google_maps/tests/src/FunctionalJavascript/GeolocationGoogleJavascriptTest.php"

Thanks for the great tutorial about https://github.com/ddev/ddev-selenium-standalone-chrome pretty cool