1 files changed, 12 insertions, 0 deletions
diff --git a/third_party/rust/futures/tests/future_fuse.rs b/third_party/rust/futures/tests/future_fuse.rs
new file mode 100644
index 0000000000..83f2c1ce9e
--- /dev/null
+++ b/third_party/rust/futures/tests/future_fuse.rs
@@ -0,0 +1,12 @@
+use futures::future::{self, FutureExt};
+use futures::task::Context;
+use futures_test::task::panic_waker;
+
+#[test]
+fn fuse() {
+    let mut future = future::ready::<i32>(2).fuse();
+    let waker = panic_waker();
+    let mut cx = Context::from_waker(&waker);
+    assert!(future.poll_unpin(&mut cx).is_ready());
+    assert!(future.poll_unpin(&mut cx).is_pending());
+}