SVG 1.1 dynamic animation tests
Test SVGLength animation on LengthModeWidth.
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS rect.width.animVal.value is 100
PASS rect.width.baseVal.value is 100
PASS rect.width.animVal.value is 200
PASS rect.width.animVal.value is 300
PASS successfullyParsed is true
TEST COMPLETE