No completion under #[tokio::test]?

[b8591340]

I saw #6029 was closed, but I’m not getting type inference or completions in a #[tokio::test]-decorated function. This is VSC on nightly with 516eb40 stable.

[lnicola]

Completion works now, but only if the macro is able to parse the function body.

Hmm, does tokio really need to use syn here?

[Veykril]

They seem to parse the function body to get the span of the last statement for diagnostic purposes as well as inspecting the type of expression of the last statement.

[Veykril]

Will be fixed by tokio-rs/tokio#4162

[lnicola]

Does tokio::test actually care about the AST, or does it just splice its stuff around the function body?

[flodiebold]

They do some shenanigans with the last statement/expression, though maybe that could be done by just looking for the last semicolon.