public function testLoadHtml()
 {
     $html = $this->loadFixture('testpage.html');
     $document = new Document();
     $document->loadHtml($html);
     $this->assertNotNull(count($document('div')));
     $document->load($html);
     $this->assertNotNull(count($document('div')));
     $document = Document::str_get_html($html);
     $this->assertNotNull(count($document('div')));
 }