app/tests/Traits/HasPlanner.php

<?php

namespace Tests\Traits;

use App\Models\Planner;

trait HasPlanner
{
    protected Planner $planner;

    protected function setUpHasPlanner(): void
    {
        $this->planner = Planner::factory()->create();
    }

    public function createPlanner(): Planner
    {
        return Planner::factory()->create();
    }
}