SVG 1.1 dynamic update tests
Tests dynamic updates of the 'in' property of the SVGFETileElement object
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS tile.in1.baseVal is "SourceGraphic"
PASS tile.in1.baseVal is "offset"
PASS successfullyParsed is true
TEST COMPLETE