1 files changed, 51 insertions, 0 deletions
diff --git a/devtools/server/tests/xpcshell/test_objectgrips-02.js b/devtools/server/tests/xpcshell/test_objectgrips-02.js
new file mode 100644
index 0000000000..fe750b768a
--- /dev/null
+++ b/devtools/server/tests/xpcshell/test_objectgrips-02.js
@@ -0,0 +1,51 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+/* eslint-disable no-shadow, max-nested-callbacks */
+
+"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 args = packet.frame.arguments;
+
+    Assert.equal(args[0].class, "Object");
+
+    const objectFront = threadFront.pauseGrip(args[0]);
+    const response = await objectFront.getPrototype();
+    Assert.ok(response.prototype != undefined);
+
+    const protoFront = response.prototype;
+    const { ownPropertyNames } = await protoFront.getOwnPropertyNames();
+    Assert.equal(ownPropertyNames.length, 2);
+    Assert.equal(ownPropertyNames[0], "b");
+    Assert.equal(ownPropertyNames[1], "c");
+
+    await threadFront.resume();
+  })
+);
+
+function evalCode(debuggee) {
+  debuggee.eval(
+    function stopMe(arg1) {
+      debugger;
+    }.toString()
+  );
+  debuggee.eval(
+    function Constr() {
+      this.a = 1;
+    }.toString()
+  );
+  debuggee.eval(
+    "Constr.prototype = { b: true, c: 'foo' }; var o = new Constr(); stopMe(o)"
+  );
+}