
PASS For Element nodes, nodeName should return the same as tagName. 
PASS For Text nodes, nodeName should return "#text". 
PASS For ProcessingInstruction nodes, nodeName should return the target. 
PASS For Comment nodes, nodeName should return "#comment". 
PASS For Document nodes, nodeName should return "#document". 
PASS For DocumentType nodes, nodeName should return the name. 
PASS For DocumentFragment nodes, nodeName should return "#document-fragment".