public function testShouldContainValidXMLWithHeader() { $array = ['Foo' => 'Bar']; $xml = '<?xml version="1.0" encoding="utf-8"?>' . "\n"; $xml .= '<Foo>Bar</Foo>'; $test = View::encodeXML($array, null, true); $this->assertXmlStringEqualsXmlString($xml, $test); }