Access key should work after accesskey attribute is mutated. To test this manually, press <alt>+a, <alt>+b and <alt>+c keys in this order (on Mac OS X, press <Ctrl>+<Opt> instead of <alt>).
On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
PASS Pressing the "a" access key triggered a focus event.
PASS Pressing the "b" access key triggered a focus event.
PASS Pressing the "c" access key triggered a focus event.
PASS successfullyParsed is true
TEST COMPLETE