SVG 1.1 dynamic update tests
Tests dynamic updates of the 'markerHeight' property of the SVGMarkerElement object
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS markerElement.markerHeight.baseVal.value is 0
PASS markerElement.markerHeight.baseVal.value is 2
PASS successfullyParsed is true
TEST COMPLETE