/**
* @covers Wa72\HtmlPageDom\HtmlPageCrawler::addClass
* @covers Wa72\HtmlPageDom\HtmlPageCrawler::removeClass
* @covers Wa72\HtmlPageDom\HtmlPageCrawler::hasClass
*/
public function testClasses()
{
$dom = new \DOMDocument('1.0', 'UTF-8');
$dom->loadHTML('<!DOCTYPE html><html><body><div id="content"><h1>Title</h1></div></body></html>');
$c = new HtmlPageCrawler($dom);
$t = $c->filter('h1');
$t->addClass('ueberschrift');
$t->addClass('nochneklasse');
$this->assertEquals('<h1 class="ueberschrift nochneklasse">Title</h1>', $t->saveHTML());
$this->assertTrue($t->hasClass('ueberschrift'));
$this->assertTrue($t->hasClass('nochneklasse'));
$t->removeClass('nochneklasse');
$this->assertTrue($t->hasClass('ueberschrift'));
$this->assertFalse($t->hasClass('nochneklasse'));
$t->addClass('class1 class2');
$this->assertTrue($t->hasClass('class1'));
$this->assertTrue($t->hasClass('class2'));
$c1 = new HtmlPageCrawler('<p class="a"></p><p class="b"></p><p class="c"></p>');
$this->assertTrue($c1->hasClass('b'));
}
