public function testHead()
{
$result = $this->html->head('meta', array('options' => array('author' => 'foo')));
$expected = array('meta' => array('author' => 'foo'));
$this->assertTags($result, $expected);
$result = $this->html->head('unexisting-name', array('options' => array('author' => 'foo')));
$this->assertNull($result);
}