SVG 1.1 dynamic update tests

Tests dynamic updates of the 'gradientUnits' property of the SVGLinearGradientElement object

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".

PASS linearGradientElement.gradientUnits.baseVal is SVGUnitTypes.SVG_UNIT_TYPE_OBJECTBOUNDINGBOX
PASS linearGradientElement.gradientUnits.baseVal is SVGUnitTypes.SVG_UNIT_TYPE_USERSPACEONUSE
PASS successfullyParsed is true

TEST COMPLETE