Ensures that we get exceptions when we do not include required arguments for localStorage methods. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS localStorage.key() threw exception TypeError: Not enough arguments. PASS localStorage.getItem() threw exception TypeError: Not enough arguments. PASS localStorage.setItem() threw exception TypeError: Not enough arguments. PASS localStorage.setItem("a") threw exception TypeError: Not enough arguments. PASS localStorage.removeItem() threw exception TypeError: Not enough arguments. PASS successfullyParsed is true TEST COMPLETE