1 files changed, 80 insertions, 0 deletions
diff --git a/tests/ui/async-await/async-closures/captures.rs b/tests/ui/async-await/async-closures/captures.rs
new file mode 100644
index 00000000000..46bbf53f0a7
--- /dev/null
+++ b/tests/ui/async-await/async-closures/captures.rs
@@ -0,0 +1,80 @@
+//@ aux-build:block-on.rs
+//@ edition:2021
+//@ run-pass
+//@ check-run-results
+
+#![feature(async_closure)]
+
+extern crate block_on;
+
+fn main() {
+    block_on::block_on(async_main());
+}
+
+async fn call<T>(f: &impl async Fn() -> T) -> T {
+    f().await
+}
+
+async fn call_once<T>(f: impl async FnOnce() -> T) -> T {
+    f().await
+}
+
+#[derive(Debug)]
+#[allow(unused)]
+struct Hello(i32);
+
+async fn async_main() {
+    // Capture something by-ref
+    {
+        let x = Hello(0);
+        let c = async || {
+            println!("{x:?}");
+        };
+        call(&c).await;
+        call_once(c).await;
+
+        let x = &Hello(1);
+        let c = async || {
+            println!("{x:?}");
+        };
+        call(&c).await;
+        call_once(c).await;
+    }
+
+    // Capture something and consume it (force to `AsyncFnOnce`)
+    {
+        let x = Hello(2);
+        let c = async || {
+            println!("{x:?}");
+            drop(x);
+        };
+        call_once(c).await;
+    }
+
+    // Capture something with `move`, don't consume it
+    {
+        let x = Hello(3);
+        let c = async move || {
+            println!("{x:?}");
+        };
+        call(&c).await;
+        call_once(c).await;
+
+        let x = &Hello(4);
+        let c = async move || {
+            println!("{x:?}");
+        };
+        call(&c).await;
+        call_once(c).await;
+    }
+
+    // Capture something with `move`, also consume it (so `AsyncFnOnce`)
+    {
+        let x = Hello(5);
+        let c = async move || {
+            println!("{x:?}");
+            drop(x);
+        };
+        call_once(c).await;
+    }
+}