Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/async/ecma262-issue-1461.js b/js/src/jit-test/tests/async/ecma262-issue-1461.js
new file mode 100644
index 0000000000..7449c303b0
--- /dev/null
+++ b/js/src/jit-test/tests/async/ecma262-issue-1461.js
@@ -0,0 +1,22 @@
+// <https://github.com/tc39/ecma262/pull/1470> changes a detail of
+// error-handling in %AsyncFromSyncIteratorPrototype% methods. This test is
+// based on a comment in the thread where the issue was first reported,
+// <https://github.com/tc39/ecma262/issues/1461#issuecomment-468602852>
+
+let log = [];
+
+{
+  async function f() {
+    var p = Promise.resolve(0);
+    Object.defineProperty(p, "constructor", {get() { throw "hi" }});
+    for await (var x of [p]);
+  }
+  Promise.resolve(0)
+         .then(() => log.push("tick 1"))
+         .then(() => log.push("tick 2"))
+         .then(() => log.push("tick 3"));
+  f().catch(exc => log.push(exc));
+}
+
+drainJobQueue();
+assertEq(log.join(), "tick 1,tick 2,hi,tick 3");