SVG 1.1 dynamic update tests
Tests dynamic updates of the 'gradientUnits' attribute of the SVGLinearGradientElement object
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS linearGradientElement.getAttribute('gradientUnits') is null
PASS linearGradientElement.getAttribute('gradientUnits') is "userSpaceOnUse"
PASS successfullyParsed is true
TEST COMPLETE