SVG 1.1 dynamic update tests
Tests dynamic updates of the 'x' attribute of the SVGFEPointLightElement object.
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS pointLight.getAttribute('x') is "50"
PASS pointLight.getAttribute('x') is "100"
PASS successfullyParsed is true
TEST COMPLETE