Creating XML with Groovy and DOM

// require(groupId:'xmlunit', artifactId:'xmlunit', version:'1.0')
import javax.xml.parsers.DocumentBuilderFactory
import org.custommonkey.xmlunit.*

def addCar(document, root, name, make, year, country, type, text) {
    def car = document.createElement('car')
    car.setAttribute('name', name)
    car.setAttribute('make', make)
    car.setAttribute('year', year)
    root.appendChild(car)
    def countryNode = document.createElement('country')
    countryNode.appendChild(document.createTextNode(country))
    car.appendChild(countryNode)
    def record = document.createElement('record')
    record.setAttribute('type', type)
    record.appendChild(document.createTextNode(text))
    car.appendChild(record)
}

def builder  = DocumentBuilderFactory.newInstance().newDocumentBuilder()
def document = builder.newDocument()
def root     = document.createElement('records')

document.appendChild(root)
addCar(document, root, 'HSV Maloo', 'Holden', '2006', 'Australia',
        'speed', 'Production Pickup Truck with speed of 271kph')
addCar(document, root, 'P50', 'Peel', '1962', 'Isle of Man',
        'size', 'Smallest Street-Legal Car at 99cm wide and 59 kg in weight')
addCar(document, root, 'Royale', 'Bugatti', '1931', 'France',
        'price', 'Most Valuable Car at $15 million')

// now load in our XML sample and compare it to our newly created document
def builder2    = DocumentBuilderFactory.newInstance().newDocumentBuilder()
def inputStream = new ByteArrayInputStream(XmlExamples.CAR_RECORDS.bytes)
def control     = builder2.parse(inputStream)

XMLUnit.setIgnoreWhitespace(true)
def xmlDiff = new Diff(document, control)
assert xmlDiff.similar()