SVG 1.1 dynamic update tests
Tests dynamic updates of the 'y' property of the SVGFESpotLightElement object
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS spotLightElement.y.baseVal is 70
PASS spotLightElement.y.baseVal is -30
PASS successfullyParsed is true
TEST COMPLETE