public function testCanSetMultipleValuesForSameAttribute() { $expected = "<h1 class='one two'>{$this->testContent}</h1>"; $el = new HTMLElement(); $el->setNodeType('h1'); $el->setContent($this->testContent); $el->class = 'one'; $el->setAttribute('class', 'two'); $this->assertEquals($expected, $el->getNode()); }