diff --git a/IPython/utils/tests/test_path.py b/IPython/utils/tests/test_path.py
index 4fe0b32..8d50f17 100644
--- a/IPython/utils/tests/test_path.py
+++ b/IPython/utils/tests/test_path.py
@@ -1,18 +1,8 @@
 # encoding: utf-8
 """Tests for IPython.utils.path.py"""
 
-#-----------------------------------------------------------------------------
-#  Copyright (C) 2008-2011  The IPython Development Team
-#
-#  Distributed under the terms of the BSD License.  The full license is in
-#  the file COPYING, distributed as part of this software.
-#-----------------------------------------------------------------------------
-
-#-----------------------------------------------------------------------------
-# Imports
-#-----------------------------------------------------------------------------
-
-from __future__ import with_statement
+# Copyright (c) IPython Development Team.
+# Distributed under the terms of the Modified BSD License.
 
 import errno
 import os
@@ -611,6 +601,17 @@ def test_unescape_glob():
     nt.assert_equals(path.unescape_glob(r'\a'), r'\a')
 
 
+def test_ensure_dir_exists():
+    with TemporaryDirectory() as td:
+        d = os.path.join(td, u'∂ir')
+        path.ensure_dir_exists(d) # create it
+        assert os.path.isdir(d)
+        path.ensure_dir_exists(d) # no-op
+        f = os.path.join(td, u'ƒile')
+        open(f, 'w').close() # touch
+        with nt.assert_raises(IOError):
+            path.ensure_dir_exists(f)
+
 class TestLinkOrCopy(object):
     def setUp(self):
         self.tempdir = TemporaryDirectory()