Tests assigning a calculated value to 'column-width' CSS property. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". 0px is not a valid value testDiv.style['column-width'] = 'calc(0px * 2)' PASS testDiv.style['column-width'] is "calc(0px)" PASS window.getComputedStyle(testDiv).getPropertyValue('column-width') is "0px" PASS successfullyParsed is true TEST COMPLETE