
PASS When the parent is null, parentElement should be null 
PASS When the parent is a document, parentElement should be null (doctype) 
PASS When the parent is a document, parentElement should be null (element) 
PASS When the parent is a document, parentElement should be null (comment) 
PASS parentElement should return null for children of DocumentFragments (element) 
PASS parentElement should return null for children of DocumentFragments (text) 
PASS parentElement should work correctly with DocumentFragments (element) 
PASS parentElement should work correctly with DocumentFragments (text) 
PASS parentElement should work correctly in disconnected subtrees (element) 
PASS parentElement should work correctly in disconnected subtrees (text) 
PASS parentElement should work correctly in a document (element) 
PASS parentElement should work correctly in a document (text)