SVG 1.1 dynamic update tests
Tests dynamic updates of the 'x' property of the SVGPatternElement object
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS patternElement.x.baseVal.value is 50
PASS patternElement.x.baseVal.value is 0
PASS successfullyParsed is true
TEST COMPLETE