1 files changed, 35 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/async-stack.js b/js/src/jit-test/tests/debug/async-stack.js
new file mode 100644
index 0000000000..015fc54c78
--- /dev/null
+++ b/js/src/jit-test/tests/debug/async-stack.js
@@ -0,0 +1,35 @@
+// |jit-test| --async-stacks-capture-debuggee-only
+
+const g = newGlobal({newCompartment: true});
+
+const code = `
+var stack = "";
+
+async function Async() {
+  await 1;
+  stack = new Error().stack;
+}
+
+function Sync() {
+  Async();
+}
+
+Sync();
+`;
+
+g.eval(code);
+drainJobQueue();
+assertEq(g.stack.includes("Sync"), false);
+
+let dbg = new Debugger();
+dbg.enableAsyncStack(g);
+
+g.eval(code);
+drainJobQueue();
+assertEq(g.stack.includes("Sync"), true);
+
+dbg.disableAsyncStack(g);
+
+g.eval(code);
+drainJobQueue();
+assertEq(g.stack.includes("Sync"), false);