--TEST--
"empty" test
--TEMPLATE--
{{ foo is empty ? 'ok' : 'ko' }}
{{ bar is empty ? 'ok' : 'ko' }}
{{ foobar is empty ? 'ok' : 'ko' }}
{{ array is empty ? 'ok' : 'ko' }}
{{ zero is empty ? 'ok' : 'ko' }}
{{ string is empty ? 'ok' : 'ko' }}
{{ countable_empty is empty ? 'ok' : 'ko' }}
{{ countable_not_empty is empty ? 'ok' : 'ko' }}
{{ markup_empty is empty ? 'ok' : 'ko' }}
{{ markup_not_empty is empty ? 'ok' : 'ko' }}
--DATA--

class CountableStub implements Countable
{
    private $items;

    public function __construct(array $items)
    {
        $this->items = $items;
    }

    public function count()
    {
        return count($this->items);
    }
}
return array(
    'foo' => '', 'bar' => null, 'foobar' => false, 'array' => array(), 'zero' => 0, 'string' => '0',
    'countable_empty' => new CountableStub(array()), 'countable_not_empty' => new CountableStub(array(1, 2)),
    'markup_empty' => new Twig_Markup('', 'UTF-8'), 'markup_not_empty' => new Twig_Markup('test', 'UTF-8'),
);
--EXPECT--
ok
ok
ok
ok
ko
ko
ok
ko
ok
ko