fix: Allow manual_async_fn lint when mocking -> impl Future methods

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
+### Fixed
+- Don't trigger `manual_async_fn` lint when mocking `-> impl Future` methods.
 
 ## [0.6.1] - 2024-03-27
 ### Fixed

tests/it/main.rs

@@ -2,7 +2,6 @@
 #![allow(unused)]
 #![allow(clippy::disallowed_names)]
 #![allow(clippy::needless_lifetimes)]
-#![allow(clippy::manual_async_fn)]
 
 use core::future::Future;
 

unimock_macros/src/unimock/mod.rs

@@ -389,6 +389,19 @@ fn def_method_impl(
         None
     };
 
+    let allow_lints: proc_macro2::TokenStream = {
+        let mut lints: Vec<proc_macro2::TokenStream> = vec![quote! { unused }];
+
+        if matches!(
+            method.output_structure.wrapping,
+            output::OutputWrapping::RpitFuture(_)
+        ) {
+            lints.push(quote! { manual_async_fn });
+        }
+
+        quote! { #[allow(#(#lints),*)] }
+    };
+
     let body = match kind {
         MethodImplKind::Mock => {
             let unmock_arm = attr.get_unmock_fn(index).map(
@@ -622,7 +635,7 @@ fn def_method_impl(
     quote_spanned! { span=>
         #(#mirrored_attrs)*
         #track_caller
-        #[allow(unused)]
+        #allow_lints
         #method_sig {
             #body
         }