public function testExistingXml() { // default is null $this->assertEquals(null, $this->fixture->getExistingXml()); $this->fixture->setExistingXml('<?xml version="1.0" ?><project version="1.0"></project>'); $this->assertInstanceOf('DOMDocument', $this->fixture->getExistingXml()); $this->assertEquals('1.0', $this->fixture->getExistingXml()->documentElement->getAttribute('version')); }