Nestable\Tests\Services\NestableServiceTest::testSelected PHP Метод

    public function testSelected()
    {
        $nestable = new \Nestable\Services\NestableService();
        $nested = $nestable->make($this->categories);
        $dropdown = $nested->selected(2)->renderAsDropdown();
        $this->assertRegExp('/\\<option\\s+?selected="selected"\\s+value=\\"2\\"\\>/', $dropdown);
    }