/**
* Method to test prepareAttributes().
*
* @return void
*
* @covers Windwalker\Form\Field\TextField::prepareAttributes
*/
public function testRenderGroup()
{
$field = new ListField('timezone', 'Time Zone', array('Asia' => array(new Option('Tokyo', 'Asia/Tokyo', array('class' => 'opt')), new Option('Taipei', 'Asia/Taipei')), 'Europe' => array(new Option('Paris', 'Europe/Paris')), new Option('UTC', 'UTC')));
$html = <<<HTML
<select name="timezone" id="timezone">
\t<optgroup label="Asia">
\t\t<option class="opt" value="Asia/Tokyo">Tokyo</option>
\t\t<option value="Asia/Taipei">Taipei</option>
\t</optgroup>
\t<optgroup label="Europe">
\t\t<option value="Europe/Paris">Paris</option>
\t</optgroup>
\t<option value="UTC">UTC</option>
</select>
HTML;
$this->assertDomStringEqualsDomString($html, $field->renderInput());
}
