public void creates_document_structure()
{
string html = "<meta name=keywords /><link rel=stylesheet /><title>jsoup</title><p>Hello world</p>";
HtmlDocument doc = HtmlDocument.Parse(html);
HtmlElement head = doc.Head;
HtmlElement body = doc.Body;
Assert.Equal(1, doc.Children.Count); // root node: contains html node
Assert.Equal(2, doc.Child(0).Elements.Count); // html node: head and body
Assert.Equal(3, head.Children.Count);
Assert.Equal(1, body.Children.Count);
Assert.Equal("keywords", head.GetElementsByTagName("meta").ToList()[0].Attribute("name"));
Assert.Equal(0, body.GetElementsByTagName("meta").Count());
Assert.Equal("jsoup", doc.Title);
Assert.Equal("Hello world", body.InnerText);
Assert.Equal("Hello world", body.Children[0].InnerText);
}