PHP

a facade root has not been set laravel

//Remove:
use PHPUnitFrameworkTestCase;

//And replace it with:
use TestsTestCase;

a facade root has not been set laravel 7

## Do not forget to call parent::setUp(); before.

//fails

public function setUp(): void
{
    Config::set('something', true);
}

//works !!!!

public function setUp(): void
{
    parent::setUp();

    Config::set('something', true);
}

A facade root has not been set.

use TestsTestCase;