cookie($cookie))->toBe($instance); expect($results = $instance->getCookies())->toHaveLength(1); expect($results[0])->toBeInstanceOf(Cookie::class); }); it('can register a cookie using callback', function () { $instance = new class() { use HasCookies; }; $callback = function(Cookie $cookie) { return $cookie; }; expect($instance->cookie($callback))->toBe($instance); expect($results = $instance->getCookies())->toHaveLength(1); expect($results[0])->toBeInstanceOf(Cookie::class); });