Test constructors for classes in Window

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".

PASS Audio.prototype.toString.call(new Audio) is '[object HTMLAudioElement]'
PASS Image.prototype.toString.call(new Image) is '[object HTMLImageElement]'
PASS Option.prototype.toString.call(new Option) is '[object HTMLOptionElement]'
PASS WebKitCSSMatrix.prototype.toString.call(new WebKitCSSMatrix) is 'matrix(1, 0, 0, 1, 0, 0)'
PASS WebKitCSSMatrix.prototype.toString.call(new WebKitCSSMatrix()) is 'matrix(1, 0, 0, 1, 0, 0)'
PASS new WebKitCSSMatrix(null) threw exception SyntaxError: Failed to construct 'DOMMatrix': Failed to parse 'null'..
FAIL new WebKitCSSMatrix(undefined) should throw an exception. Was matrix(1, 0, 0, 1, 0, 0).
PASS XMLHttpRequest.prototype.toString.call(new XMLHttpRequest) is '[object XMLHttpRequest]'
PASS XSLTProcessor.prototype.toString.call(new XSLTProcessor) is '[object XSLTProcessor]'
PASS successfullyParsed is true

TEST COMPLETE