autoFocus={true} seems to not be added to the input element

[jasikpark]

As you can see in

I edited the example to set <Example id={a11yId} expected={expected} autoFocus={true}/> but there is no autofocus attribute on the input on load.

[axelmarciano]

In React, autofocus!== autoFocus.
If you use the autofocus props you will use the html props but with autoFocus the focus() method will be called when the component mounts.
If you want to learn more: facebook/react#11851 (comment)