Undefind withoutExceptionHandling()

I'm trying to run my UnitTest on laravel 6 (windows 10) with the famous:

this->withoutExceptionHandling();

But I get this error:

Error: Call to undefined method Tests\Unit\ExampleTest::withoutExceptionHandling()

I didn't change any setting and of course it's being defined in:

Illuminate\Foundation\Testing\Concerns\InteractsWithExceptionHandling

I even tried:

"use Illuminate\Foundation\Testing\Concerns\InteractsWithExceptionHandling;"

But this still does nothing.

This is a simple testing file, and it should work fine.

<?php

namespace Tests\Unit;


use Illuminate\Foundation\Testing\Concerns\InteractsWithExceptionHandling;
use Tests\TestCase;

class ExampleTest extends TestCase
{
    use InteractsWithExceptionHandling;

    /**
     * A basic test example.
     *
     * @return void
     */
    public function testBasicTest()
    {
        $this->withoutExceptionHandling();

        $this->assertTrue(true);
    }
}