create(); $user = User::factory()->create(['language_id' => $language->id]); expect($language->users)->toHaveCount(1); expect($language->users->first()->id)->toBe($user->id); }); test('language has fillable attributes', function () { $language = Language::factory()->create([ 'name' => 'Portuguese', 'code' => 'pt-BR', ]); expect($language->name)->toBe('Portuguese'); expect($language->code)->toBe('pt-BR'); });