[kazagistar]

While in some sense I agree with you, stuff like code bubbles is just a incremental step from folding. If you want better interfaces for your coding, you write bidirectional transformations between your representation and the text; the point being that the underlying representation does not particularly matter. Having underlying text, however, means you have a good fallback in case your tools do fail.

I would say the more potent point is that it should not matter at all if the tests are in the function or in a different directory: the IDE should be able to fold them in either way, and in some sense, IDEs already do have partial support for this.

[stcredzero]

> While in some sense I agree with you, stuff like code bubbles is just a incremental step from folding.

I said it was a "beacon in the direction we want to go," not a lighthouse at the destination!

> the point being that the underlying representation does not particularly matter. Having underlying text, however, means you have a good fallback in case your tools do fail.

Sure, do this, so long as the representation doesn't limit the objective capabilities of the environment and so long as it doesn't limit the ways tool makers think about code. Unfortunately, our current representations clearly do both.