To have your tests run in PHPStorm, you will have to set up a few things:

PHP interpreter

PHPUnit

Setting up local PHP interpreter

Go to Settings ▶ Languages & Frameworks ▶ PHP

PHP interpreter settings screen

It’s pretty much self-explaining, as you can see, and you are likely to have this already set up, if you actively do PHP development.

A lot of companies use remote sandboxes to run development version of the project, run tests etc. For that, you can setup remote interpreter by clicking on the ellipsis button next to CLI Interpreter dropdown:

Remote PHP interpreter settings screen

Setting up PHPUnit

Go to Settings ▶ Languages & Frameworks ▶ PHP ▶ PHPUnit

PHPUnit settings screen

You can select a PHP interpreter, path to PHPUnit executable (often it is the path to phpunit.phar but I prefer to symlink it to have a shorter name). If you use XML configuration and/or a bootstrap file, those can be specified for your project as well.

Running tests

Easy as 2x2. Select the whole folder with tests in the project tree and press a combo (Ctrl+Shift+F10 in my configuration which has Eclipse keymap as a base; find yours in Settings ▶ Keymap). Alternatively, right-click folder name and choose “Run PHPUnit”.

But that’s not all PHPStorm can do for you. Place the cursor inside a test method and press the same combo: PHPUnit will run just that particular test method. Extremely handy when actively developing something and constantly switching between working code and test code and running the test. Moreover, if you place the cursor outside a test method, while still staying within the test class and run PHPUnit — the whole test class is run.

Keep calm and write unit tests. See you later ;-)