cargo fmt broken within proptest macro?

[vlovich]

Hi,

I noticed a strange issue where nothing within proptest! {} is formatted by cargo fmt.

#[cfg(test)]
mod property_tests {
    use proptest::proptest;

    proptest! {
         #[test]
         fn test_it(s: u8) {
             eprintln!("Example that never gets formatted even though its very very very long and {} {} {} {} {}", "this", "should", "be", "split", "up");
         }
    }
}

[vlovich]

Oh maybe this is implicit by way of https://github.com/rust-lang/rustfmt/issues/8? Not sure if that's about formatting the macro code or the call site.

[rex-remind101]

Thanks for raising this, this does appear to be an issue with rustfmt which we unfortunately do not have control over.

[tzemanovic]

https://github.com/proptest-rs/proptest/pull/316 will help with that

[matthew-russo]

As mentioned, this is the expected rustfmt behavior with declarative macros and not specific to proptest. I'm going to close this as there is no action for us to take

[cgbur]

For the time being you could consider copying your proptest block into a new Rust file and formatting with https://github.com/andrewbaxter/genemichaels which handles macros. Granted it took 9 months to support stable let-else formatting, so macro formatting is probably still a few years out.