1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/onDebuggerStatement-async-resumption-01.js b/js/src/jit-test/tests/debug/onDebuggerStatement-async-resumption-01.js
new file mode 100644
index 0000000000..e8607217f6
--- /dev/null
+++ b/js/src/jit-test/tests/debug/onDebuggerStatement-async-resumption-01.js
@@ -0,0 +1,34 @@
+// A Debugger can {return:} from onDebuggerStatement in an async function.
+// The async function's promise is resolved with the returned value.
+
+load(libdir + "asserts.js");
+
+let g = newGlobal({newCompartment: true});
+g.eval(`
+    async function f(x) {
+        debugger;  // when==0 to force return here
+        await x;
+        debugger;  // when==1 to force return here
+    }
+`);
+
+let dbg = new Debugger;
+let gw = dbg.addDebuggee(g);
+function test(when, what, expected) {
+    let hits = 0;
+    let result = "FAIL";
+    dbg.onDebuggerStatement = frame => {
+        if (hits++ == when)
+            return {return: gw.makeDebuggeeValue(what)};
+    };
+    g.f(0).then(x => { result = x; });
+    assertEq(hits, 1);
+    drainJobQueue();
+    assertEq(hits, when + 1);
+    assertEq(result, expected);
+}
+
+for (let i = 0; i < 2; i++) {
+    test(i, "ok", "ok");
+    test(i, g.Promise.resolve(37), 37);
+}