public function testRecursiveSelect() {
		$list = array(
			'Linux' => array(
				'1' => 'Ubuntu 10.10',
				'2' => 'CentOS 5'
			),
			'Other' => array(
				'4' => 'Solaris',
				'5' => 'Windows Server 2010 R2'
			)
		);
		$result = $this->form->select('opsys', $list, array(
			'empty' =>  'Select one', 'value' => '5'
		));

		$this->assertTags($result, array(
			'select' => array('name' => 'opsys', 'id' => 'Opsys'),
			array('option' => array('value' => '')),
			'Select one',
			'/option',
			array('optgroup' => array('label' => 'Linux')),
			array('option' => array('value' => '1')),
			'Ubuntu 10.10',
			'/option',
			array('option' => array('value' => '2')),
			'CentOS 5',
			'/option',
			'/optgroup',
			array('optgroup' => array('label' => 'Other')),
			array('option' => array('value' => '4')),
			'Solaris',
			'/option',
			array('option' => array('value' => '5', 'selected' => 'selected')),
			'Windows Server 2010 R2',
			'/option',
			'/optgroup',
			'/select'
		));
	}