1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/onEnterFrame-async-01.js b/js/src/jit-test/tests/debug/onEnterFrame-async-01.js
new file mode 100644
index 0000000000..299516264e
--- /dev/null
+++ b/js/src/jit-test/tests/debug/onEnterFrame-async-01.js
@@ -0,0 +1,32 @@
+// async functions fire onEnterFrame each time they resume, like generators
+
+let g = newGlobal({newCompartment: true});
+g.eval(`
+    async function timeout(n) {
+        for (let i = 0; i < n; i++) {
+            await Promise.resolve(i);
+        }
+    }
+    async function job() {
+        let racer = timeout(5);
+        await timeout(3);
+        await racer;
+    }
+`);
+
+let dbg = Debugger(g);
+let log = "";
+let nicknames = ["job", "t5", "t3"];
+dbg.onEnterFrame = frame => {
+    if (!("nickname" in frame))
+        frame.nickname = nicknames.shift() || "FAIL";
+    log += "(" + frame.nickname;
+    frame.onPop = completion => { log += ")"; };
+};
+
+g.job();
+drainJobQueue();
+assertEq(log,
+         "(job(t5)(t3))" +
+         "(t5)(t3)".repeat(3) +
+         "(t5)(job)(t5)(job)");