From e20c4067dcfc50bd560b859bd4ec0190b1a4fc6a Mon Sep 17 00:00:00 2001
From: Nick Fitzgerald <fitzgen@gmail.com>
Date: Mon, 4 Feb 2019 16:38:21 +0100
Subject: [PATCH] futures: Add a test for creating multiple futures from the
 same promise

---
 crates/futures/tests/tests.rs | 7 +++++++
 1 file changed, 7 insertions(+)
 mode change 100644 => 100755 crates/futures/tests/tests.rs

diff --git a/crates/futures/tests/tests.rs b/crates/futures/tests/tests.rs
old mode 100644
new mode 100755
index e8e6bbf4267..d8ea2674e6b
--- a/crates/futures/tests/tests.rs
+++ b/crates/futures/tests/tests.rs
@@ -108,3 +108,10 @@ fn spawn_local_err_no_exception() -> impl Future<Item = (), Error = JsValue> {
     })
 }
 
+#[wasm_bindgen_test(async)]
+fn can_create_multiple_futures_from_same_promise() -> impl Future<Item = (), Error = JsValue> {
+    let promise = js_sys::Promise::resolve(&JsValue::null());
+    let a = JsFuture::from(promise.clone());
+    let b = JsFuture::from(promise);
+    futures::future::join_all(vec![a, b]).map(|_| ())
+}