1 files changed, 19 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_file.js b/js/xpconnect/tests/unit/test_file.js
new file mode 100644
index 0000000000..f0a22ab45f
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_file.js
@@ -0,0 +1,19 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ 
+add_task(function() {
+  do_load_manifest("component-file.manifest");
+  const contractID = "@mozilla.org/tests/component-file;1";
+  Assert.ok(contractID in Cc);
+  var foo = Cc[contractID]
+              .createInstance(Ci.nsIClassInfo);
+  Assert.ok(Boolean(foo));
+  Assert.ok(foo.contractID == contractID);
+  Assert.ok(!!foo.wrappedJSObject);
+
+  foo.wrappedJSObject.doTest(result => {
+    Assert.ok(result);
+    run_next_test();
+  });
+});