1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-script-06.js b/js/src/jit-test/tests/debug/Frame-script-06.js
new file mode 100644
index 0000000000..a01000347a
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-script-06.js
@@ -0,0 +1,48 @@
+// Frame.prototype.script for async generator frames.
+
+load(libdir + "asserts.js");
+
+var g = newGlobal({ newCompartment: true });
+var dbg = new Debugger(g);
+g.eval(`
+async function* f() {
+  await Promise.resolve();
+}
+`);
+
+let frame;
+let script;
+dbg.onEnterFrame = function(f) {
+  frame = f;
+  script = frame.script;
+};
+
+const it = g.f();
+
+assertEq(frame instanceof Debugger.Frame, true);
+assertEq(script instanceof Debugger.Script, true);
+assertEq(frame.script, script);
+
+let lastFrame = frame;
+let lastScript = script;
+frame = null;
+script = null;
+
+let promise = it.next();
+
+assertEq(frame, lastFrame);
+assertEq(script, lastScript);
+assertEq(frame.script, script);
+
+lastFrame = frame;
+lastScript = script;
+frame = null;
+script = null;
+
+promise.then(() => {
+  assertEq(frame, lastFrame);
+  assertEq(script, lastScript);
+
+  // The frame has finished evaluating, so the script is no longer accessible.
+  assertThrowsInstanceOf(() => frame.script, Error);
+});