Declaration of TestCase::setUp() must be compatible

Jan 02, 2021    Janaki Mahapatra, PHP

If you are getting an error while testing in laravel as  PHP Fatal error: Declaration of Tests\TestCase::setUp() must be compatible with Illuminate\Foundation\Testing\TestCase::setUp():.... in that case, fix your test as below

Normally it happened because of PHP Unit 8 incompatibility issue. If you suddenly upgrade your Laravel version, you might have a high chance to face this issue.

class UserTest extends TestCase
{
	public function setUp(): void // add void here 
	{
	    parent::setUp();
	}
}

* make sure to add void in setUp method