 {
				var spinner = document.querySelector('#spinner'),
					spinnerStyle = TestHelper.style(spinner.$.spinner),
					animationDuration = spinnerStyle.animationDuration || spinnerStyle['-webkit-animation-duration'],
					animationTimingFunction = spinnerStyle.animationTimingFunction || spinnerStyle['-webkit-animation-timing-function'];
				should.equal(parseFloat(animationDuration).toPrecision(5), (1/spinner.speed).toPrecision(5));
				should.equal(animationTimingFunction, 'steps('+spinner.numTicks+', end)