1 files changed, 14 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_print_stderr.js b/js/xpconnect/tests/unit/test_print_stderr.js
new file mode 100644
index 0000000000..4c2d87ae7a
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_print_stderr.js
@@ -0,0 +1,14 @@
+/* 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(async function() {
+  Assert.throws(
+    () => Cu.printStderr(),
+    /Not enough arguments/,
+    "Without argument printStderr throws"
+  );
+
+  const types = ["", "foo", 42, true, null, {foo: "bar"}];
+  types.forEach(type => Cu.printStderr(type));
+});