public void TestSiblingsElement()
{
var n1 = new HElement("div", "Content 1");
var n2 = new HElement("div", "Content 2");
var n3 = new HElement("div", "Content 3");
var n4 = new HElement("div", "Content 4");
var n5 = new HElement("div", "Content 5");
var root = new HElement("div", n1, n2, n3, n4, n5);
Assert.Equal(new HElement[] { n1, n3, n4, n5 }, n2.Siblings().ToArray());
n2 = null;
Assert.Equal(0, n2.Siblings().Count());
}
