Are there pure php unit testing systems?

Question

PHP

In order to use PHPUnit, you need to install pear, phpunit, selenium, plus a selenium browser client, which is not very convenient.
Are there php-only unit testing systems?
Those. downloaded php-class(es), wrote tests (in php), and run tests using this system without using additional libraries, etc.

Answer 1

Of course there are.
This is phpunit.
It is installed directly from composer.
And now nothing is being installed through pear - it has long been abandoned and dead.

Answer 2

Codeception