public void AppendNode()
{
XmlNode productsNode = XmlUtils.AppendToNode(new XmlDocument(), "products");
Assert.IsNotNull(productsNode.OwnerDocument);
Assert.AreEqual(1, productsNode.OwnerDocument.ChildNodes.Count);
Assert.AreEqual("products", productsNode.OwnerDocument.ChildNodes[0].Name);
XmlNode productNode = XmlUtils.AppendToNode(productsNode, "product");
Assert.AreEqual(1, productsNode.ChildNodes.Count);
Assert.AreEqual("product", productsNode.ChildNodes[0].Name);
XmlNode productVariants = XmlUtils.AppendToNode(productNode, "variants");
Assert.AreEqual(1, productNode.ChildNodes.Count);
Assert.AreEqual("variants", productNode.ChildNodes[0].Name);
XmlNode productVariant1 = XmlUtils.AppendToNode(productVariants, "variant");
XmlUtils.AppendAttribute(productVariant1, "Name", "Color");
XmlNode productVariant2 = XmlUtils.AppendToNode(productVariants, "variant");
XmlUtils.AppendAttribute(productVariant2, "Name", "Size");
Assert.AreEqual(2, productVariants.ChildNodes.Count);
Assert.AreEqual("variant", productVariants.ChildNodes[0].Name);
Assert.IsNotNull(productVariants.ChildNodes[0].Attributes);
Assert.AreEqual(1, productVariants.ChildNodes[0].Attributes.Count);
Assert.AreEqual("Color", productVariants.ChildNodes[0].Attributes["Name"].Value);
Assert.AreEqual("variant", productVariants.ChildNodes[1].Name);
Assert.IsNotNull(productVariants.ChildNodes[1].Attributes);
Assert.AreEqual(1, productVariants.ChildNodes[1].Attributes.Count);
Assert.AreEqual("Size", productVariants.ChildNodes[1].Attributes["Name"].Value);
}
