diff -r 058bb3dc685f -r 0b59724cb3f2 cubicweb/web/test/unittest_views_treeview.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cubicweb/web/test/unittest_views_treeview.py	Sat Jan 16 13:48:51 2016 +0100
@@ -0,0 +1,51 @@
+# copyright 2003-2015 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
+#
+# This file is part of CubicWeb.
+#
+# CubicWeb is free software: you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation, either version 2.1 of the License, or (at your option)
+# any later version.
+#
+# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
+
+from logilab.common.testlib import unittest_main
+from logilab.mtconverter import html_unescape
+
+from cubicweb.devtools.htmlparser import XMLValidator
+from cubicweb.devtools.testlib import CubicWebTC
+
+
+class TreeViewTC(CubicWebTC):
+
+    def test_treeview(self):
+        with self.admin_access.repo_cnx() as cnx:
+            ce = cnx.create_entity
+            root = ce('TreeNode', name=u'root')
+            node = ce('TreeNode', name=u'node1', parent=root)
+            ce('TreeNode', name=u'leaf1a', parent=node)
+            ce('TreeNode', name=u'leaf1b', parent=node)
+            node = ce('TreeNode', name=u'node2', parent=root)
+            ce('TreeNode', name=u'leaf2a', parent=node)
+            ce('TreeNode', name=u'leaf2b', parent=node)
+            root_eid = root.eid
+            cnx.commit()
+
+        with self.admin_access.web_request() as req:
+            root = req.entity_from_eid(root_eid)
+            valid = self.content_type_validators.get('text/html', XMLValidator)()
+            page = valid.parse_string(root.view('tree', klass='oh-my-class'))
+            uls = page.find_tag('ul', gettext=False)
+            for _, attrib in uls:
+                self.assertEqual(attrib['class'], 'oh-my-class')
+
+
+if __name__ == '__main__':
+    unittest_main()