PHP Fatal error: Class 'PHPUnit\Framework\TestCase' not found with PHPUnit 6 and PHP 7.0
I found the answer:
I was excuting my test with this command line:
phpunit Test/ObserverTest.php
PHPUnit is installed globally on my computer, but it's the 5.1.3 version:
phpunit -v
PHPUnit 5.1.3 by Sebastian Bergmann and contributors.
Runtime: PHP 7.0.13-0ubuntu0.16.04.1 with Xdebug 2.4.0
Configuration: /home/.../.../DesignPatterns/phpunit.xml
And the syntax PHPUnit\Framework\TestCase only works with PHPUnit 6
Now, if I run php vendor/bin/phpunit Test/ObserverTest.php
, it works perfectly...