[pydry]

Weird Ive always found the opposite - E2E tests tend to make the fewest assumptions about the way the application is built.

In most cases we could literally rewrite the whole app in a different language and barely change the tests.

E2E tests do require a solid infrastructure though. If you have tooling problems you cant fix (e.g. you hit selenium's dark corners way too frequently because your web app is even a bit quirky) then maintainence cost can quite quickly exceed any benefit you derive.

Ive also hit this problem of "Id have to create my own equivalent of selenium for interacting with this app's interface" a few times and yeah, the required engineering effort to do it well explodes to the point where its just not worth it.