Add test of trailing comma after mut self

Currently fails with: ---- test_mut_self stdout ---- thread 'test_mut_self' panicked at 'Punctuated::push_punct: cannot push punctuation if Punctuated is empty or already has trailing punctuation', src/punctuated.rs:181:9
dtolnay · Mar 16, 2022 · 99510ff · 99510ff
1 parent 9a66997
commit 99510ff
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/tests/test_ty.rs b/tests/test_ty.rs
@@ -9,6 +9,7 @@ use syn::Type;
 #[test]
 fn test_mut_self() {
     syn::parse_str::<Type>("fn(mut self)").unwrap();
+    syn::parse_str::<Type>("fn(mut self,)").unwrap();
     syn::parse_str::<Type>("fn(mut self: ())").unwrap();
     syn::parse_str::<Type>("fn(mut self: ...)").unwrap_err();
     syn::parse_str::<Type>("fn(mut self: mut self)").unwrap_err();