Posted on Jun23rd2020 by Matthias Noback PHPStorm IDE from the last version gives for you ability to generate a TestCode and they do not use an underscore too: I opened a popular frameworks (Symfony, Laravel, YII2, CodeIgniter4) test folders in Github and then I opened a popular PHP library and also do not find underscore usage in test and @test annotation.
You might as well write something like this: In fact, there are test frameworks that let you write tests like this.
Starting test method names with it_ can be very helpful to get you in this "specification" mindset.