Is it possible to use fixture values in case or value lists?

[svenstaro]

Hey, I realize I have a somewhat weird case but bear with me.

#[fixture]
pub fn rng() -> StdRng {
    let seed: [u8; 32] = rand::thread_rng().gen();
    let rng = StdRng::from_seed(seed);
    rng
}

#[rstest]
#[case(make_password(&mut rng))]
#[tokio::test]
async fn my_test(
    mut rng: StdRng,
    #[case] password: String,
) -> Result<()> {}

So I want to use the rng() fixture in my_test() but also use the resulting rng value in make_password which provides a value to my case.

This currently doesn't work and I suppose it's not currently intended to work. Is there any chance this could be made to work?

[la10736]

That not true in general:

#[fixture]
pub fn ppp() -> String {
    "ppp".to_owned()
}

fn fff(s: &str) -> String {
    format!("{}-{}", s, s)
}

#[rstest]
#[case(fff(&ppp))]
fn my_test(ppp: String, #[case] password: String) {}

Compile fine.

The issue here is that you use mut rng: StdRng but in the injecting code I remove mutability because in the standard case you would just use it in your test function but not in injecting code: that means you can have lot warning about this.

I just hacked a solution and it works but I need to shut down all warnings and check if I don't have any regression.

I'll fix it ASAP

[svenstaro]

Cool!

[svenstaro]

Can you make a patch release with this?

[svenstaro]

@la10736 friendly ping :)

[la10736]

Sorry... I missed and forget it.... I'll do a release ASAP

[la10736]

Released... sorry for the delay :(

[svenstaro]

Alright, but don't forget the tag! Thanks. :)

[la10736]

I did the tag too...

[svenstaro]

Sorry, I must've missed it. Thanks for the work! :)