1 files changed, 29 insertions, 0 deletions
diff --git a/xpcom/tests/unit/test_ioutil.js b/xpcom/tests/unit/test_ioutil.js
new file mode 100644
index 0000000000..e269b424a2
--- /dev/null
+++ b/xpcom/tests/unit/test_ioutil.js
@@ -0,0 +1,29 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 4 -*- */
+/* 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/. */
+
+const util = Cc["@mozilla.org/io-util;1"].getService(Ci.nsIIOUtil);
+
+function run_test() {
+  try {
+    util.inputStreamIsBuffered(null);
+    do_throw("inputStreamIsBuffered should have thrown");
+  } catch (e) {
+    Assert.equal(e.result, Cr.NS_ERROR_INVALID_POINTER);
+  }
+
+  try {
+    util.outputStreamIsBuffered(null);
+    do_throw("outputStreamIsBuffered should have thrown");
+  } catch (e) {
+    Assert.equal(e.result, Cr.NS_ERROR_INVALID_POINTER);
+  }
+
+  var s = Cc["@mozilla.org/io/string-input-stream;1"].createInstance(
+    Ci.nsIStringInputStream
+  );
+  var body = "This is a test";
+  s.setData(body, body.length);
+  Assert.equal(util.inputStreamIsBuffered(s), true);
+}