1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-onStep-resumption-06.js b/js/src/jit-test/tests/debug/Frame-onStep-resumption-06.js
new file mode 100644
index 0000000000..3170c0319c
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-onStep-resumption-06.js
@@ -0,0 +1,31 @@
+// |jit-test| error:all-jobs-completed-successfully
+// Verifiy that onStep's force-return queues the promise microtask to run in
+// the debuggee's job queue, not the debugger's
+// AutoDebuggerJobQueueInterruption.
+
+let g = newGlobal({ newCompartment: true });
+g.eval(`
+  async function asyncFn(x) {
+    await Promise.resolve();
+  }
+  function enterDebuggee(){}
+`);
+const dbg = new Debugger(g);
+
+(async function() {
+  let it = g.asyncFn();
+
+  // Force-return when the await resumes and steps.
+  dbg.onEnterFrame = frame => {
+    dbg.onEnterFrame = undefined;
+    frame.onStep = () => ({ return: "exit" });
+  };
+
+  const result = await it;
+  assertEq(result, "exit");
+  // If execution here is resumed from the debugger's queue, this call will
+  // trigger DebuggeeWouldRun exception.
+  g.enterDebuggee();
+
+  throw "all-jobs-completed-successfully";
+})();