SVG 1.1 dynamic update tests
Tests dynamic updates of the 'x2' property of the SVGLineElement object
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS lineElement.x2.baseVal.value is 100
PASS lineElement.x2.baseVal.value is 200
PASS successfullyParsed is true
TEST COMPLETE