Add Support for Testing with Output

[Cyncrovee]

This PR solves the issue I raised in #579 by adding a new rust-test-output function.

[Dushistov]

This can use C-u prefix, like it is implemented in https://github.com/ayrat555/cargo-mode .
Where M-x cargo-process-test run predefined command,
but if you run C-u M-x cargo-process-test then it is allowed you to edit predefined command and add wherever you want, like -- --show-output or -- --no-capture.

[psibi]

Thanks! How about modifying rust-test to accept universal argument instead and allow it configure arbitrary argument instead ?

This would allow us to accept any arbitrary options to be passed instead of this specific usecase. You can look into rustic mode for inspiration: https://github.com/emacs-rustic/rustic?tab=readme-ov-file#test

[Cyncrovee]

Thanks! How about modifying rust-test to accept universal argument instead and allow it configure arbitrary argument instead ?

This would allow us to accept any arbitrary options to be passed instead of this specific usecase. You can look into rustic mode for inspiration: https://github.com/emacs-rustic/rustic?tab=readme-ov-file#test

Thank you, will definitely look into this suggestion when I get chance.

[Cyncrovee]

Updated with the suggested change. Feel free to merge unless you want more changes, in which case let me know and I'll take a look.

[Cyncrovee]

Hold on, I seem to have misread the suggestion, I'm going to convert to a draft while I figure this out.

[Cyncrovee]

Sorry for the wait on this, should get to it soon :]

[Cyncrovee]

I wanted to add an empty list of arguments that would be added to whenever you passed a C-u prefix arg (and persisted across sessions), but I couldn't get it to work- so I just had to settle with this. You can pass prefix with C-u, and if you want access to previously inputted args you'll have to use the built-in minibuffer history (should be accessible via the up and down keys).

I'm going to squash the commits into one then it should be ready to merge.

[Cyncrovee]

Sorry about that "Merge branch 'rust-lang:master' into master" commit, I didn't think it would do that (never mind, managed to fix it!). Anyway, this should be ready to merge now.

[Cyncrovee]

@psibi Sorry for the ping, just wanted to ask if this is good to merge? Or if there's anything else you want added, let me know and I'll take a look.

[psibi]

Thanks! Sorry about the late review, I was out on vacation. This LGTM overall. Can you add a test with an optional argument passed to it ?

[Cyncrovee]

Okay, this should be GTG now. Managed to create two tests, not sure if two is necessary but if not I can remove one.