1 files changed, 26 insertions, 0 deletions
diff --git a/devtools/server/tests/unit/test_nodelistactor.js b/devtools/server/tests/unit/test_nodelistactor.js
new file mode 100644
index 000000000..4d9ec1a7a
--- /dev/null
+++ b/devtools/server/tests/unit/test_nodelistactor.js
@@ -0,0 +1,26 @@
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+// Test that a NodeListActor initialized with null nodelist doesn't cause
+// exceptions when calling NodeListActor.form.
+
+const { NodeListActor } = require("devtools/server/actors/inspector");
+
+function run_test() {
+  check_actor_for_list(null);
+  check_actor_for_list([]);
+  check_actor_for_list(["fakenode"]);
+}
+
+function check_actor_for_list(nodelist) {
+  do_print("Checking NodeListActor with nodelist '" + nodelist + "' works.");
+  let actor = new NodeListActor({}, nodelist);
+  let form = actor.form();
+
+  // No exception occured as a exceptions abort the test.
+  ok(true, "No exceptions occured.");
+  equal(form.length, nodelist ? nodelist.length : 0,
+    "NodeListActor reported correct length.");
+}