// retoor <retoor@molodetz.nl>
import "html" for Document
var doc = Document.parse("<div id='container'></div>")
var container = doc.getElementById("container")
System.print(container.children.count) // expect: 0
var p = doc.createElement("p")
p.textContent = "First"
container.appendChild(p)
System.print(container.children.count) // expect: 1
System.print(container.firstChild.textContent) // expect: First
var span = doc.createElement("span")
span.textContent = "Second"
container.appendChild(span)
System.print(container.children.count) // expect: 2
System.print(container.lastChild.textContent) // expect: Second
var text = doc.createTextNode("Text node")
container.appendChild(text)
System.print(container.textContent.contains("Text node")) // expect: true