PHPUnit

A quote from "phpunit" website that describes the tool (https://phpunit.de/):

"PHPUnit is a programmer-oriented testing framework for PHP. It is an instance of the xUnit architecture for unit testing frameworks."

Installation

Note: Make sure to install composer before jumping to this section (a guide to install composer locate next to this guide).

To make sure we can run phpunit we have to install few things:

1. Fresh WordPress installation just for the test (to make sure tests not affected by your current WordPress installation)
2. Fresh database (to make sure tests not affected by your current database)
3. wp-testing-tools - set of utils that helps us to test WordPress plugins and themes.
4. phpunit bin file.

There is a script that handles all those requirements

SVN

before running the install script you should check if there is svn in your machine.

Run: which svn if something like /usr/local/bin/svn or /usr/bin/svn was returned you should skip this step.

Installing svn in mac: brew install svn (if you don't have "brew" install it: https://brew.sh/)

Installing svn in Linux subsystem: sudo apt-get install subversion

Installation script

Run composer run test:install. it should prompt questions about your database credentials make sure to fill correct credentials.

That's all you can run composer test which will run the whole "Elementor" test suite, any argument that allowed to pass to phpunit command you can pass to composer test command, e.g: composer test -- --filter Elementor_Test_Bootstrap. just make sure to pass extra -- before your argument.