1 files changed, 56 insertions, 0 deletions
diff --git a/devtools/server/tests/xpcshell/test_objectgrips-nested-promise.js b/devtools/server/tests/xpcshell/test_objectgrips-nested-promise.js
new file mode 100644
index 0000000000..b60b7328c2
--- /dev/null
+++ b/devtools/server/tests/xpcshell/test_objectgrips-nested-promise.js
@@ -0,0 +1,56 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+Services.prefs.setBoolPref("security.allow_eval_with_system_principal", true);
+registerCleanupFunction(() => {
+  Services.prefs.clearUserPref("security.allow_eval_with_system_principal");
+});
+
+add_task(
+  threadFrontTest(async ({ threadFront, debuggee }) => {
+    const packet = await executeOnNextTickAndWaitForPause(
+      () => evalCode(debuggee),
+      threadFront
+    );
+
+    const [grip1, grip2] = packet.frame.arguments;
+    strictEqual(grip1.class, "Promise", "promise1 has a promise grip.");
+    strictEqual(grip2.class, "Promise", "promise2 has a promise grip.");
+
+    const objClient1 = threadFront.pauseGrip(grip1);
+    const objClient2 = threadFront.pauseGrip(grip2);
+    const { promiseState: state1 } = await objClient1.getPromiseState();
+    const { promiseState: state2 } = await objClient2.getPromiseState();
+
+    strictEqual(state1.state, "fulfilled", "promise1 was fulfilled.");
+    strictEqual(state1.value, objClient2, "promise1 fulfilled with promise2.");
+    ok(!state1.hasOwnProperty("reason"), "promise1 has no rejection reason.");
+
+    strictEqual(state2.state, "rejected", "promise2 was rejected.");
+    strictEqual(state2.reason, objClient1, "promise2 rejected with promise1.");
+    ok(!state2.hasOwnProperty("value"), "promise2 has no resolution value.");
+
+    await threadFront.resume();
+  })
+);
+
+function evalCode(debuggee) {
+  debuggee.eval(
+    function stopMe(arg) {
+      debugger;
+    }.toString()
+  );
+
+  debuggee.eval(`
+    var resolve;
+    var promise1 = new Promise(r => {resolve = r});
+    Object.setPrototypeOf(promise1, null);
+    var promise2 = Promise.reject(promise1);
+    promise2.catch(() => {});
+    Object.setPrototypeOf(promise2, null);
+    resolve(promise2);
+    stopMe(promise1, promise2);
+  `);
+}