Testing Validation of State

[peterfox]

Is there a good way to test the validation of a state?

For Example I have the following Event:

<?php

namespace App\Events;

use App\Models\Goal;
use App\States\UserState;
use Illuminate\Support\Str;
use Thunk\Verbs\Attributes\Autodiscovery\StateId;
use Thunk\Verbs\Event;

class UserCreatedGoal extends Event
{
    public ?int $goal_id = null;

    public function __construct(
        #[StateId(UserState::class)]
        public int $user_id,
        public string $name,
        public ?string $description,
    )
    {
        $this->goal_id ??= snowflake_id();
    }

    public function validate(UserState $state): bool
    {
        return (count($state->goals) + 1) <= config('settings.max_goals', 10);
    }

    public function apply(UserState $state): void
    {
        $state->goals[] = $this->goal_id;
    }

    public function handle(): Goal
    {
        return Goal::create([
            'id' => $this->goal_id,
            'user_id' => $this->user_id,
            'slug' => Str::slug($this->name),
            'name' => $this->name,
            'description' => $this->description,
        ]);
    }
}

With the following test:

test('blocks creating too many goals', function () {
    // make it quicker to test
    config()->set('settings.max_goals', 1);

    $user = \App\Models\User::factory()->create();

    \App\Events\UserCreatedGoal::commit(
        user_id: $user->id,
        name: fake()->word,
        description: fake()->text(),
    );

    \App\Events\UserCreatedGoal::commit(
        user_id: $user->id,
        name: fake()->word,
        description: fake()->text(),
    );
})
    ->throws('Validation failed in \'validate\'');

It works but it feels off. Is there a way to set up/seed a state for a test so I don't have to make previous events to check if a validation of an Event will fail as expected?