
PASS document.open() must throw an InvalidStateError when synchronously constructing a custom element 
PASS document.open("text/html") must throw an InvalidStateError when synchronously constructing a custom element 
PASS document.open(URL) must NOT throw an InvalidStateError when synchronously constructing a custom element 
PASS document.close() must throw an InvalidStateError when synchronously constructing a custom element 
PASS document.write must throw an InvalidStateError when synchronously constructing a custom element 
PASS document.writeln must throw an InvalidStateError when synchronously constructing a custom element 
PASS document.open() of another document must not throw an InvalidStateError when synchronously constructing a custom element 
PASS document.open("text/html") of another document must not throw an InvalidStateError when synchronously constructing a custom element 
PASS document.close() of another document must not throw an InvalidStateError when synchronously constructing a custom element 
PASS document.write of another document must not throw an InvalidStateError when synchronously constructing a custom element 
PASS document.writeln of another document must not throw an InvalidStateError when synchronously constructing a custom element