This tests that 'getSVGDocument' returns null on elements that don't contain SVG documents.
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS document.createElement('object').getSVGDocument() is null
PASS document.createElement('iframe').getSVGDocument() is null
PASS document.createElement('embed').getSVGDocument() is null
PASS successfullyParsed is true
TEST COMPLETE