[FEATURE] Delete casette if test fails when running with --record-mode=once

[dragonpaw]

Is your feature request related to a problem? Please describe.
When I'm building a new test, I'll run the test with --record-mode=once, but the test might fail (since it's new) and I then have to go delete the file so it'll re-record. It's kinda an annoyance to go find and make sure I delete the right file.

Describe the solution you'd like
I'd love it if there was some logic where when running with --record-mode=once it only saved the files from the tests that pass, then I could write a bunch of new tests, run them all, the good ones would get saved, and then I'd go fix the ones that didn't pass.

Just kinda a nice to have I'd think. Definitely not a big issue. Though it seems odd to save a cassette for a failed test in general.

Describe alternatives you've considered
Considered --record-mode=any, but that would re-run unrelated tests that I'm not working on.

[CarloDePieri]

@dragonpaw I had this same problem some time ago; since I couldn't find any existing solution I wrote a pytest plugin that deletes cassettes of failed test by using a flexible decorator.
It does not depends on pytest-recording directly, but integrates nicely with it since it uses its same cassettes' default path. See if it suits your needs.

pytest-vcr-delete-on-fail

Also, folks of pytest-recording, you're more than welcome to take a look at the code, if this is a feature you recon would be interesting to have integrated in here!