Kind of a gross functional test. How to improve it, maybe?

GIVEN that we have a Character with a Type that has a Might pool value and a Descriptor that has a Might bonus value

WHEN we run that character through the calculation rules for rendering

THEN the Character's Might will be calculated accurately

    public function it_calculates_might_accurately()
    {
        $this->signIn();

        $stat = Stat::findOrFail(Stat::MIGHT);
        $type = create(Type::class);
        $type->stats()->save($stat);
        $type->stats[0]->pivot->pool = 10;
        $type->save();

        $descriptor = create(Descriptor::class);
        $descriptor->stats()->save($stat);
        $descriptor->stats[0]->pivot->bonus = 2;
        $descriptor->save();

        $characterModel = new ModelCharacter();
        $characterModel->type()->associate($type);
        $characterModel->descriptor()->associate($descriptor);

        $characterRender = new RenderCharacter($characterModel);

        $this->assertEquals(12, $characterRender->stats[Stat::MIGHT]->pool);
    }

Laravel 5.5. The only thing I seed into the database for my tests is the core rule stats.

I probably don't need the signIn() since I'm never saving the character.