Test Runner
Run your test suites from the backend and view the results — or coverage — without leaving the browser.
Select the app or a plugin, choose the type of classes you want to test, then click the run icon.
TIP
If a class has no test file yet, an add icon appears next to it — click it to bake the test for you.

Configuration
php
'TestHelper' => [
// Custom phpunit command. Both `php phpunit.phar` and `vendor/bin/phpunit` work out of the box.
'command' => null,
// Set to 'xdebug' if you have it enabled; otherwise pcov is used by default.
'coverage' => null,
],See Configuration for the full list of options.
WARNING
If the coverage report renders in black & white, your web server may be blocking hidden files (the assets). See Troubleshooting.