Async closures
diff --git a/tests/test_async_fn.rs b/tests/test_asyncness.rs
similarity index 63%
rename from tests/test_async_fn.rs
rename to tests/test_asyncness.rs
index b01d6b6..de9abfc 100644
--- a/tests/test_async_fn.rs
+++ b/tests/test_asyncness.rs
@@ -12,7 +12,7 @@
extern crate syn;
use proc_macro2::Span;
-use syn::{Block, FnDecl, Ident, ItemFn, ReturnType, Visibility};
+use syn::{Block, Expr, ExprBlock, ExprClosure, FnDecl, Ident, ItemFn, ReturnType, Visibility};
use syn::punctuated::Punctuated;
#[test]
@@ -43,3 +43,28 @@
assert_eq!(expected, syn::parse_str(raw).unwrap());
}
+
+#[test]
+fn test_async_closure() {
+ let raw = "async || {}";
+
+ let expected = Expr::Closure(ExprClosure {
+ attrs: vec![],
+ movability: None,
+ asyncness: Some(Default::default()),
+ capture: None,
+ or1_token: Default::default(),
+ inputs: Punctuated::new(),
+ or2_token:Default::default(),
+ output: ReturnType::Default,
+ body: Box::new(Expr::Block(ExprBlock {
+ attrs: vec![],
+ block: Block {
+ brace_token: Default::default(),
+ stmts: vec![],
+ }
+ })),
+ });
+
+ assert_eq!(expected, syn::parse_str(raw).unwrap());
+}