This is a test case for String.prototype.fontsize(size). On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS '_'.fontsize('"') is "_" PASS '_'.fontsize('b') is "_" PASS '<'.fontsize('b') is "<" PASS '_'.fontsize(0x2A) is "_" PASS '_'.fontsize('"') is "_" PASS '_'.fontsize('" color="b') is "_" PASS String.prototype.fontsize.call(0x2A, 0x2A) is "42" PASS String.prototype.fontsize.call(undefined) threw exception TypeError: Type error. PASS String.prototype.fontsize.call(null) threw exception TypeError: Type error. PASS String.prototype.fontsize.length is 1 PASS successfullyParsed is true TEST COMPLETE