SVG 1.1 dynamic update tests

Tests dynamic updates of the 'x' property of the SVGFilterPrimitiveStandardAttributes object

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

PASS gradientElement.x.baseVal.value is 100
PASS gradientElement.x.baseVal.value is 0
PASS successfullyParsed is true

TEST COMPLETE