Eclipse and PHPUnit: "The import PHPUnit\Framework\TestCase cannot be resolved"

Question

I'm starting with PHPUnit, and it works fine so far. I just got one problem: Eclipse (Oxygen.3) is telling me in this line:

use PHPUnit\Framework\TestCase;

"The import PHPUnit\Framework\TestCase cannot be resolved"

I went to Window -> Preferences -> PHP -> Tools -> PHPUnit and added the path to my phpunit.phar. But this didn't help.

I went to Window -> Preferences -> PHP -> Source Paths -> Libraries and tried to import my phpunit.phar. But this results in an error "The selected file is not a valid user library data file".

Any other ideas how to get rid of this error?

Answer 1

I was having the same problem and this solution worked for me:

1. Going into Project > Properties
2. Under PHP > Include Path, pick the "Libraries" tab.
3. On "Add External PHARs..." select the PHPUnit framework file on your system (phpunit.phar).