Tests calling getPropertyValue on computed border radii involving CSS calc On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS getComputedStyle(document.getElementById('calc'), null).getPropertyValue('border-top-left-radius') is "calc(25% + 10px) calc(25% + 20px)" PASS getComputedStyle(document.getElementById('calc'), null).getPropertyValue('border-top-right-radius') is "calc(25% + 10px)" PASS getComputedStyle(document.getElementById('calc'), null).getPropertyValue('border-bottom-right-radius') is "25%" PASS getComputedStyle(document.getElementById('calc'), null).getPropertyValue('border-bottom-left-radius') is "25px" PASS getComputedStyle(document.getElementById('calc'), null).getPropertyValue('border-radius') is "calc(25% + 10px) calc(25% + 10px) 25% 25px / calc(25% + 20px) calc(25% + 10px) 25% 25px" PASS successfullyParsed is true TEST COMPLETE