1 files changed, 41 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_scriptable_nsIClassInfo.js b/js/xpconnect/tests/unit/test_scriptable_nsIClassInfo.js
new file mode 100644
index 0000000000..161afcbb9b
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_scriptable_nsIClassInfo.js
@@ -0,0 +1,41 @@
+/* Any copyright is dedicated to the Public Domain.
+https://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_task(function () {
+  class TestClass {
+    QueryInterface = ChromeUtils.generateQI([
+      "nsIXPCTestInterfaceA",
+      "nsIClassInfo",
+    ]);
+
+    interfaces = [Ci.nsIXPCTestInterfaceA, Ci.nsIClassInfo, Ci.nsISupports];
+    contractID = "@mozilla.org/test/class;1";
+    classDescription = "description";
+    classID = Components.ID("{4da556d4-00fa-451a-a280-d2aec7c5f265}");
+    flags = 0;
+
+    name = "this is a test";
+  }
+
+  let instance = new TestClass();
+  Assert.ok(instance, "can create an instance");
+  Assert.ok(instance.QueryInterface(Ci.nsIClassInfo), "can QI to nsIClassInfo");
+
+  let registrar = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
+  registrar.registerFactory(
+    instance.classID,
+    instance.classDescription,
+    instance.contractID,
+    {
+      createInstance(iid) {
+        return instance.QueryInterface(iid);
+      },
+    }
+  );
+  Assert.ok(true, "successfully registered the factory");
+
+  let otherInstance = Cc["@mozilla.org/test/class;1"].createInstance(
+    Ci.nsIXPCTestInterfaceA
+  );
+  Assert.ok(otherInstance, "can create an instance via xpcom");
+});