1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-asyncPromise-03.js b/js/src/jit-test/tests/debug/Frame-asyncPromise-03.js
new file mode 100644
index 0000000000..8dee273c28
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-asyncPromise-03.js
@@ -0,0 +1,39 @@
+// Test the promise property on generator function frames.
+
+load(libdir + 'asserts.js');
+
+var g = newGlobal({ newCompartment: true });
+var dbg = Debugger(g);
+g.eval(`
+function* f() {
+  debugger;
+  yield;
+  debugger;
+}
+`);
+
+let frame;
+const promises = [];
+dbg.onDebuggerStatement = function(f) {
+  frame = f;
+  promises.push(frame.asyncPromise);
+};
+
+const it = g.f();
+
+assertEq(promises.length, 0);
+
+it.next();
+
+assertEq(frame.asyncPromise, undefined);
+
+assertEq(promises.length, 1);
+assertEq(promises[0], undefined);
+
+it.next();
+
+// Frame has terminated, so accessing the property throws.
+assertThrowsInstanceOf(() => frame.asyncPromise, Error);
+
+assertEq(promises.length, 2);
+assertEq(promises[1], undefined);