It's kinda different story and rather a hack than a standard approach. And it's not always a cace, because it will handle the callbacks slower than a direct bind and therefore not always appropriate.
In any case it's not what the test is intended to do. We test standard operations, that's all. Testing live with bind is like comparing apples with oranges.
> How about '.Class .child:visible:not(.test):eq(1)'?
Do you mean non-standard css-selectors? There is nothing to test, rightjs simply doesn't support them
With rightjs you always can do it like that
$$('.class').filter('visible');