timeout-macro 0.10.0

modio-logger Dbus service
Documentation 
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// Author: D.S. Ljungmark <spider@skuggor.se>, Modio AB
// SPDX-License-Identifier: AGPL-3.0-or-later
//
use proc_macro::TokenStream;
use quote::{quote, quote_spanned};
use syn::spanned::Spanned;

/// Enables an async test function.
///
/// # Examples
///
/// ```ignore
/// #[async_std::test]
/// async fn my_test() -> std::io::Result<()> {
///     assert_eq!(2 * 2, 4);
///     Ok(())
/// }
/// ```
#[proc_macro_attribute]
pub fn timeouttest(_attr: TokenStream, item: TokenStream) -> TokenStream {
    let input = syn::parse_macro_input!(item as syn::ItemFn);

    let ret = &input.sig.output;
    let name = &input.sig.ident;
    let body = &input.block;
    let attrs = &input.attrs;
    let vis = &input.vis;

    if input.sig.asyncness.is_none() {
        return TokenStream::from(quote_spanned! { input.span() =>
            compile_error!("the async keyword is missing from the function declaration"),
        });
    }

    let result = quote! {
        #[::core::prelude::v1::test]
        #(#attrs)*
        #vis fn #name() #ret {
            async_std::task::block_on(async {
                async_std::future::timeout(std::time::Duration::from_secs(130), async {#body}).await.expect("Timeout occured for testcase")
            })
        }
    };

    result.into()
}