public function test_fail_safe_against_invalid_string() { $item = new Item(); $item->title("testtest")->url("urltest")->description("descdesc"); $expect = '<?xml version="1.0" encoding="UTF-8"?> <item><title>test</title><link>url</link><description>desc</description></item> '; $this->assertSame($expect, $item->asXML()->asXML()); }